Changelog

Before Upgrading

See the CircleCI server 4.1 release notes for upgrade notes for this release.

When upgrading from server v3.x you will need to install v4.0 before installing this version.

What’s New in Release 4.1.3

Fixes

• Query parameters are now supported on the task-agent download endpoint.

Known Issues

• Vault may not refresh its client token after a month of uptime.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for public installations, but for private installs you would need to ensure that you can access the private IP advertised. For example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.

To learn more about Server 4.1 installation, migration, or operations please see our documentation.

Before Upgrading

See the What’s new in server 3.x doc for upgrade notes for this release.

What’s New in Release 3.4.7

Fixes

• When using CircleCI runner, a repository can now be directly cloned with the checkout step in .circleci/config.yml.

Known Issues

• webhook-service is not operational when Vault is externalized.
• Vault may not refresh its client token after a month of uptime.
• Before upgrading to v3.4.x, delete the deployment named circleci-server-kube-state-metrics.
• Prometheus is broken in KOTS versions 1.65.0 - 1.67.0. If you rely on this feature, do not upgrade your KOTS version until this issue has been resolved.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for private installations, but for public installations you would need to ensure that you can access the private IP advertised (for example, by using a VPN into your VPC).
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.
• The KOTS admin console cannot be upgraded if your installation is set up to be behind a proxy. The proxy settings will be deleted and cause the KOTS admin console to break.

To learn more about Server 3.x installation, migration, or operations please see our documentation.

Before Upgrading

See the CircleCI server 4.1 release notes for upgrade notes for this release.

When upgrading from server v3.x you will need to install v4.0 before installing this version.

What’s New in Release 4.1.2

Changes

• We have updated our PostgreSQL password requirements to allow special characters (except single or double quotes) in addition to alphanumeric characters.

Fixes

• For runner installations on server, you can now directly clone a repository with just the checkout step in .circleci/config.yml.

Known Issues

• Vault may not refresh its client token after a month of uptime.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for public installations, but for private installs you would need to ensure that you can access the private IP advertised. For example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.

To learn more about Server 4.1 installation, migration, or operations please see our documentation.

Before upgrading

See the CircleCI server 4.0 release notes for upgrade notes for this release.

What’s new in release 4.0.4

Changes

• We have updated our PostgreSQL password requirements to allow special characters (except single or double quotes) in addition to alphanumeric characters.

Fixes

• For runner installations on server, you can now directly clone a repository with just the checkout step in .circleci/config.yml.

Known issues

• When migrating from 3.x to 4.x, workflow configuration migrations will run as an init job and the workflows-conductor-event-consumer and the workflows-conductor-grpc-handler pods will not start until the migration completes. Customers with large PostgreSQL databases should plan accordingly. Migration time can be reduced by scaling the workflow-conductor pods.
• Vault may not refresh its client token after a month of uptime.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for public installations, but for private installs you would need to ensure that you can access the private IP advertised. For example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.

To learn more about Server 4.0 installation, migration, or operations please see our documentation.

Before upgrading

See the CircleCI server 4.0 release notes for upgrade notes for this release.

What’s new in release 4.0.3

Changes

• In the checkout step in a CircleCI configuration, GitHub host keys are appended to ~/.ssh/known_hosts. Due to a change to GitHub’s RSA SSH key, CircleCI have updated the appended key to match. If you are using GitHub.com, and your installation of server has the old host key hardcoded into any projects, you will also need to update these to match.

Known issues

• When migrating from 3.x to 4.x, workflow configuration migrations will run as an init job and the workflows-conductor-event-consumer and the workflows-conductor-grpc-handler pods will not start until the migration completes. Customers with large PostgreSQL databases should plan accordingly. Migration time can be reduced by scaling the workflow-conductor pods.
• Vault may not refresh its client token after a month of uptime.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for public installations, but for private installs you would need to ensure that you can access the private IP advertised. For example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.

To learn more about Server 4.0 installation, migration, or operations please see our documentation.

Before Upgrading

See the What’s new in server 3.x doc for upgrade notes for this release.

What’s New in Release 3.4.6

Changes

• In the checkout step in a CircleCI configuration, GitHub host keys are appended to ~/.ssh/known_hosts. Due to a change to GitHub’s RSA SSH key, CircleCI have updated the appended key to match. If you are using GitHub.com, and your installation of server has the old host key hardcoded into any projects, you will also need to update these to match.

Known Issues

• webhook-service is not operational when Vault is externalized.
• Vault may not refresh its client token after a month of uptime.
• Before upgrading to v3.4.x, delete the deployment named circleci-server-kube-state-metrics.
• Prometheus is broken in KOTS versions 1.65.0 - 1.67.0. If you rely on this feature, do not upgrade your KOTS version until this issue has been resolved.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for private installations, but for public installations you would need to ensure that you can access the private IP advertised (for example, by using a VPN into your VPC).
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.
• The KOTS admin console cannot be upgraded if your installation is set up to be behind a proxy. The proxy settings will be deleted and cause the KOTS admin console to break.

To learn more about Server 3.x installation, migration, or operations please see our documentation.

Before Upgrading

See the CircleCI server 4.1 release notes for upgrade notes for this release.

When upgrading from server v3.x you will need to install v4.0 before installing this version.

What’s New in Release 4.1.1

Changes

• In the checkout step in a CircleCI configuration, GitHub host keys are appended to ~/.ssh/known_hosts. Due to a change to GitHub’s RSA SSH key, CircleCI have updated the appended key to match. If you are using GitHub.com, and your installation of server has the old host key hardcoded into any projects, you will also need to update these to match.

Known Issues

• Vault may not refresh its client token after a month of uptime.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for public installations, but for private installs you would need to ensure that you can access the private IP advertised. For example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.

To learn more about Server 4.1 installation, migration, or operations please see our documentation.

Before Upgrading

See the CircleCI server 4.1 release notes for upgrade notes for this release.

When upgrading from server v3.x you will need to install v4.0 before installing this version.

What’s New in Release 4.1.0

New features

• Air-gapped installation is now supported on server v4.1.
• Self-signed certificates or private certificate authorities are now supported when using GitHub Enterprise.
• For new installations, Tink can be used as the encryption backend instead of Vault.

Changes

• The minimum Telegraf version is now set to 1.8.14.
• Nomad and Vault images are now stored in templates, rather than hardcoded in charts.
• The Nomad Terraform configurations now have the Nomad port hardcoded. Previously this needed to be entered manually.

Database Migrations

The following databases will run migrations when upgrading this version.

• builds_service
• branch_service
• contexts_service_production
• orbs
• orb_analytics
• permissions
• webhook_service
• conductor_production

Fixes

• The Trigger Pipeline button in the web app now works for forked PRs, and an error message will be visible if the trigger fails.
• Fixed a bug that was preventing forked PRs from building if both the fork and original were building on CircleCI.
• Fixed a bug that was causing intermittent status updates for jobs in GitHub.

Known Issues

• Vault may not refresh its client token after a month of uptime.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for public installations, but for private installs you would need to ensure that you can access the private IP advertised. For example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.

To learn more about Server 4.x installation, migration, or operations please see our documentation.

Before Upgrading

See the What’s new in server 3.x doc for upgrade notes for this release.

What’s New in Release 3.4.5

Fixes

• Patched some CVEs.
• Updated runner’s launch-agent to use a query string instead of a GET body.

Known Issues

• webhook-service is not operational when Vault is externalized.
• Vault may not refresh its client token after a month of uptime.
• Before upgrading to v3.4.x, delete the deployment named circleci-server-kube-state-metrics.
• Prometheus is broken in KOTS versions 1.65.0 - 1.67.0. If you rely on this feature, do not upgrade your KOTS version until this issue has been resolved.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for private installations, but for public installations you would need to ensure that you can access the private IP advertised (for example, by using a VPN into your VPC).
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.
• The KOTS admin console cannot be upgraded if your installation is set up to be behind a proxy. The proxy settings will be deleted and cause the KOTS admin console to break.

To learn more about Server 3.x installation, migration, or operations please see our documentation.

Before upgrading

See the CircleCI server 4.x release notes for upgrade notes for this release.

What’s new in release 4.0.2

Changes

• Pin Bitnami Postgres Helm chart url

Known issues

• When migrating from 3.x to 4.x, workflow configuration migrations will run as an init job and the workflows-conductor-event-consumer and the workflows-conductor-grpc-handler pods will not start until the migration completes. Customers with large PostgreSQL databases should plan accordingly. Migration time can be reduced by scaling the workflow-conductor pods.
• Vault may not refresh its client token after a month of uptime.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for public installations, but for private installs you would need to ensure that you can access the private IP advertised. For example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.

To learn more about Server 4.x installation, migration, or operations please see our documentation.

Before Upgrading

See the What’s new in server 3.x doc for upgrade notes for this release.

What’s New in Release 3.4.4

Fixes

• Fixed a bug that was causing delays and failures to update git commit statuses.

Known Issues

• webhook-service is not operational when Vault is externalized.
• Vault may not refresh its client token after a month of uptime.
• Before upgrading to v3.4.x delete the deployment named circleci-server-kube-state-metrics.
• Prometheus is broken in KOTS versions 1.65.0 - 1.67.0. If you rely on this feature, do not upgrade your KOTS version until this issue has been resolved.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for private installations, but for public installations you would need to ensure that you can access the private IP advertised. For example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.
• The KOTS admin console cannot be upgraded if your installation is set up to be behind a proxy. The proxy settings will be deleted and cause the KOTS admin console to break.

To learn more about Server 3.x installation, migration, or operations please see our documentation.

Before Upgrading

See the What’s new in server 3.x doc for upgrade notes for this release.

What’s New in Release 3.4.3

Changes

• Anonymous statistics reporting for Kong is now set to disabled by default.

Fixes

• Fixed a bug that was preventing email notifications from being sent with the following setting enabled: Notifications > Email Notifications> Build Notifications > My Branches.
• Fixed a bug that was causing a “Failed to load webhooks” error on project Webhooks pages in the CircleCI web app.

Known Issues

• webhook-service is not operational when Vault is externalized.
• Vault may not refresh its client token after a month of uptime.
• Before upgrading to v3.4.x delete the deployment named circleci-server-kube-state-metrics.
• Prometheus is broken in KOTS versions 1.65.0 - 1.67.0. If you rely on this feature, do not upgrade your KOTS version until this issue has been resolved.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for private installations, but for public installs you would need to ensure that you can access the private IP advertised. For example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.
• The KOTS admin console cannot be upgraded if your installation is set up to be behind a proxy. The proxy settings will be deleted and cause the KOTS admin console to break.

To learn more about Server 3.x installation, migration, or operations please see our documentation.

Before upgrading

See the CircleCI server 4.x release notes for upgrade notes for this release.

What’s new in release 4.0.1

Changes

• When migrating to server v4.x, Telegraf configuration data is now decoded and available in your values.yaml file.
• Anonymous statistics reporting for Kong is now set to disabled by default.
• TLS settings are now available for Postgres.

Fixes

• Fixed a bug that was preventing email notifications from being sent with the following setting enabled: Notifications > Email Notifications> Build Notifications > My Branches.
• Fixed a bug that prevented webhook-service from working when Vault is externalized.

Known issues

• When migrating from 3.x to 4.x, workflow configuration migrations will run as an init job and the workflows-conductor-event-consumer and the workflows-conductor-grpc-handler pods will not start until the migration completes. Customers with large PostgreSQL databases should plan accordingly. Migration time can be reduced by scaling the workflow-conductor pods.
• Vault may not refresh its client token after a month of uptime.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for public installations, but for private installs you would need to ensure that you can access the private IP advertised. For example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.

To learn more about Server 4.x installation, migration, or operations please see our documentation.

CircleCI server v4.0.0 is now generally available. The feature set for this release are equal to server v3.x. The installation and upgrade processes for v4.x have changed significantly.

Server v4.x offers greatly improved security handling, installation, and update processes. Server v4.x is installed using helm charts and images that can be pulled ahead of time to comply with your security processes. Installation processes can also use artifacts pulled from customer-managed registries. Server v4.x makes improved use of Kubernetes secrets and removes the requirement to grant permissions and network access to third-party tools.

Before upgrading

See the CircleCI server 4.x release notes for upgrade notes for this release.

What’s new in release 4.0.0

New features

• Two new Arm resource classes are now available xlarge and 2xlarge. For more information on using Arm, see the Arm docs.
• CircleCI server v4.x images and helm charts are available for licenced users.

Fixes

• Fixed a bug that was causing a huge quantity of error logs in the distributer-internal pod.
• Prometheus is no longer included by default in CircleCI server v4.x.
• The default concurrency limit has been increased to avoid it being reached.
• Docker layer caching volumes are now deleted after 3 days if unused. Previously they were deleted after 7 days.
• kong is now placed behind NGINX to simplify loadbalancer setup.
• The loadbalancer has been renamed from circleci-traefik to circleci-proxy.
• Workflow configurations that are stored in PostgreSQL will migrated to the Object Storage.

Known issues

• Telegraf needs to have its configuration overwritten and base64 encoded.
• When migrating from 3.x to 4.x, workflow configuration migrations will run as an init job and the workflows-conductor-event-consumer and the workflows-conductor-grpc-handler pods will not start until the migration completes. Customers with large PostgreSQL databases should plan accordingly. Migration time can be reduced by scaling the workflow-conductor pods.
• Webhook-service may not work with an externalized Vault.
• Vault may not refresh its client token after a month of uptime.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for public installations, but for private installs you would need to ensure that you can access the private IP advertised. For example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.

To learn more about Server 4.x installation, migration, or operations please see our documentation.

Before Upgrading

See the What’s new in server 3.x doc for upgrade notes for this release.

What’s New in Release 3.4.2

Fixes

• Links and redirects within the CircleCI server web app now correctly send users to their server login page. Previously, these links were directing people to the CircleCI cloud login page.
• Improvements to the user experience when upgrading and migrating server versions.
• Root volumes created by VM service are now tagged with the custom tag set for instances in the KOTS admin console. This covers machine executor and remote Docker VMs.
• A bug was fixed that was presenting users who need to re-autorize with a 404.
• CircleCI cloud marketing items have been removed.

Known Issues

• Vault may not refresh its client token after a month of uptime.
• Before upgrading to v3.4.x delete the deployment named circleci-server-kube-state-metrics.
• Prometheus is broken in KOTS versions 1.65.0 - 1.67.0. If you rely on this feature, do not upgrade your KOTS version until this issue has been resolved.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for private installations, but for public installs you would need to ensure that you can access the private IP advertised. For example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.
• The KOTS admin console cannot be upgraded if your installation is set up to be behind a proxy. The proxy settings will be deleted and cause the KOTS admin console to break.

To learn more about Server 3.x installation, migration, or operations please see our documentation.

Before Upgrading

See the What’s new in server 3.x doc for upgrade notes for this release.

What’s New in Release 3.4.1

Fixes

• Kong resource limits have been increased. The previous limits were affecting the stability of some server installations.
• The KOTS config has been updated to allow private loadbalancers when ACM is in use.
• Fixed a bug that was preventing distributor-external from running in certain environments.

Known Issues

• Before upgrading to v3.4.x delete the deployment named circleci-server-kube-state-metrics.
• Prometheus is broken in KOTS versions 1.65.0 - 1.67.0. If you rely on this feature, do not upgrade your KOTS version until this issue has been resolved.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for private installations, but for public installs you would need to ensure that you can access the private IP advertised. For example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.
• The KOTS admin console cannot be upgraded if your installation is set up to be behind a proxy. The proxy settings will be deleted and cause the KOTS admin console to break.

To learn more about Server 3.x installation, migration, or operations please see our documentation.

Before Upgrading

See the What’s new in server 3.x doc for upgrade notes for this release.

What’s New in Release 3.4.0

New Features

• Android images for the machine executor are now available. For more information, see the Using Android Images with the Machine Executor guide.
• The CircleCI Build Agent can now be pulled from a custom Docker registry if required. For more information contact customer support.
• You can now use Amazon Certificate Manager (ACM) to manage your TLS certificates. For more information see the installation docs.
• Kubernetes v1.16 - v1.23 are now supported.
• Workload Identities for installations on GCP are now supported. Workload Identities can be used as an alternative to static credentials. For more informations see the installation docs

Fixes

• Fixed a bug that was causing the jobs page and step output access to run very slow in the CircleCI web app.
• Fixed a bug that was causing the workflows conductor pod to crash and issues with StatsD metrics.

Known Issues

• Before installing v3.4.0 delete the deployment named circleci-server-kube-state-metrics.
• Prometheus is broken in KOTS versions 1.65.0 - 1.67.0. If you rely on this feature, do not upgrade your KOTS version until this issue has been resolved.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for private installations, but for public installs you would need to ensure that you can access the private IP advertised. For example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.
• The KOTS admin console cannot be upgraded if your installation is set up to be behind a proxy. The proxy settings will be deleted and cause the KOTS admin console to break.
• Config files will now be stored in the chosen object store (e.g., AWS S3, Google Cloud Storage or Minio). Users can run into errors accessing certain pipelines, if these config files are deleted due to retention policies (e.g., AWS S3 Lifecycle).

To learn more about Server 3.x installation, migration, or operations please see our documentation.

What’s New in Release 2.19.15

Notes

In March 2022 updates to CircleCI server v2.x will stop.

Fixes

• Removed out-dated truststore for root CAs.
• Patched various security vulnerabilities.

Known Issues

• On static (non-AWS) installations with NONE selected under storage driver settings, tests can be split only by file name or file size. If a user attempts to split tests by timing data, static instances will split them by file name instead.
• If any changes have been made to your networking configuration from the default, you should run the following steps to ensure you can use SSH to inspect your builds (for further information on SSH reruns see the SSH Rerun Guide):
  • For customers using AWS, make sure that you have the latest Launch Configuration configured for Nomad clients, and that exiting Nomad clients were spun up using the Launch Configuration.
  • On each Nomad Client machine, create /etc/circleci/public-ipv4
  • This file should contain the public (if applicable) or private IP of the nomad client

What’s New in Release 2.19.14

Notes

In March 2022 updates to CircleCI server v2.x will stop. Support for customers using CircleCI server v2.x will continue.

• There has been a change to how you will checkout using tags in jobs. Branch tags will now be referenced by either CIRCLE_TAG or +refs/heads/tag/path. For example, git checkout --force "$CIRCLE_TAG" or git fetch --force origin '+refs/heads/master:refs/remotes/origin/master'

Fixes

• Security patches for the exim image
• Replaced deprecated GitHub API endpoint for teams

Known Issues

• On static (non-AWS) installations with NONE selected under storage driver settings, tests can be split only by file name or file size. If a user attempts to split tests by timing data, static instances will split them by file name instead.
• If any changes have been made to your networking configuration from the default, you should run the following steps to ensure you can use SSH to inspect your builds (for further information on SSH reruns see the SSH Rerun Guide):
  • For customers using AWS, make sure that you have the latest Launch Configuration configured for Nomad clients, and that exiting Nomad clients were spun up using the Launch Configuration.
  • On each Nomad Client machine, create /etc/circleci/public-ipv4
  • This file should contain the public (if applicable) or private IP of the nomad client

Before Upgrading

See the What’s new in server 3.x doc for upgrade notes for this release.

What’s New in Release 3.3.1

Fixes

• CircleCI runner can now be used when server is installed behind a proxy.
• Fixed a bug that was causing some intermittent broken dependency caches.
• Removed outdated cert trust stores from some images. They were found to be causing access issues to some server installations.
• Fixed a bug that was affecting runner updates.
• SSH reruns now work when server is installed behind a proxy.
• Replaced deprecated GitHub API endoint for teams.

Known Issues

• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for private installations, but for public installs you would need to ensure that you can access the private IP advertised, for example, by using a VPN into your VPC.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.
• The KOTS admin console cannot be upgraded if your installation is set up to be behind a proxy. The proxy settings will be deleted and cause the KOTS admin console to break.

To learn more about Server 3.x installation, migration, or operations please see our documentation.

Before Upgrading

See the What’s new in server 3.x doc for upgrade notes for this release.

What’s New in Release 3.3.0

Features

• Nomad Autoscaler can now be used to scale Nomad clients. For more information see the execution environments installation docs.
• Webhooks are now available.
• The Insights dashboard is now available.
• IRSA (AWS) can now be used as an alternative to keys for object storage authentication.
• The email address from which build notifications are sent is now configurable from the KOTS admin console.
• We have replaced Traefik with Kong as our reverse proxy. However, in order to minimize disruption when upgrading, we chose not to rename the service used by Kong. Therefore, you will see a service named circleci-server-traefik, however, this service is actually for Kong.

Fixes

• Upgraded Python to v3 in Vault container.
• Docs improvements on using the shared VPC architecture in GCP.
• The JVM heap size has been updated so that output-processor can use up to 80% of the pod memory limit.

Known Issues

• Updating GitHub Enterprise with a modified Let’s Encrypt certificate is unsupported.
• Let’s Encrypt’s new root certificate isrgrootx1 is not trusted.
• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for private installations, but for public installs you would need to ensure that you can access the private IP advertised, for example, by using a VPN into your VPC.
• It is currently possible for multiple organizations under the same CircleCI server account to have contexts with identical names. This should be avoided as doing so could lead to errors and unexpected behavior.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.
• The KOTS admin console cannot be upgraded if your installation is set up to be behind a proxy. The proxy settings will be deleted and cause the KOTS admin console to break.
• Runner cannot be used when server is installed behind a proxy.

To learn more about Server 3.x installation, migration, or operations please see our documentation.

What’s New in Release 2.19.13

Notes

In March 2022 updates to CircleCI server v2.x will stop. Support for customers using CircleCI server v2.x will continue.

Fixes

• Various security and vulnerability patches.

Known Issues

• On static (non-AWS) installations with NONE selected under storage driver settings, tests can be split only by file name or file size. If a user attempts to split tests by timing data, static instances will split them by file name instead.
• If any changes have been made to your networking configuration from the default, you should run the following steps to ensure you can use SSH to inspect your builds (for further information on SSH reruns see the SSH Rerun Guide):
  • For customers using AWS, make sure that you have the latest Launch Configuration configured for Nomad clients, and that exiting Nomad clients were spun up using the Launch Configuration.
  • On each Nomad Client machine, create /etc/circleci/public-ipv4
  • This file should contain the public (if applicable) or private IP of the nomad client

Before Upgrading

See the What’s new in server 3.x doc for upgrade notes for this release.

What’s New in Release 3.2.2

Notes

• The rerun workflow endpoint now returns workflow ID rather than the message accepted.

Fixes

• TLS is terminated outside of frontend so the SSL server has been completely removed from the frontend container.
• Moved the default certificate logic from KOTS to helm.
• Fixed the build agent image version used in server v3.x. The image used previously was causing problems with runner.

Known Issues

• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for private installations, but for public installs you would need to ensure that you can access the private IP advertised, for example, by using a VPN into your VPC.
• It is currently possible for multiple organizations under the same CircleCI server account to have contexts with identical names. This should be avoided as doing so could lead to errors and unexpected behavior.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.
• The KOTS admin console cannot be upgraded if your installation is set up to be behind a proxy. The proxy settings will be deleted and cause the KOTS admin console to break.
• Runner cannot be used when server is installed behind a proxy.
• Let’s Encrypt certificate generation does not work. You will need to provide your own certificates or use the default certificates provided.

To learn more about Server 3.x installation, migration, or operations please see our documentation.

Before Upgrading

See the What’s new in server 3.x doc for upgrade notes for this release.

What’s New in Release 3.2.1

New Features

• Private VMs are now supported for installations on GCP.

Fixes

• mTLS is now disabled by default.
• SSH timeout for VMs has been increased to 10 minutes.
• Private VMs now request private IPs.

Known Issues

• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for private installations, but for public installs you would need to ensure that you can access the private IP advertised, for example, by using a VPN into your VPC.
• It is currently possible for multiple organizations under the same CircleCI server account to have contexts with identical names. This should be avoided as doing so could lead to errors and unexpected behavior.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.
• The KOTS admin console cannot be upgraded if your installation is set up to be behind a proxy. The proxy settings will be deleted and cause the KOTS admin console to break.
• Runner cannot be used when server is installed behind a proxy.
• Let’s Encrypt certificate generation does not work. You will need to provide your own certificates or use the default certificates provided.

To learn more about Server 3.x installation, migration, or operations please see our documentation.

Before Upgrading

See the What’s new in server 3.x doc for upgrade notes for this release.

What’s New in Release 3.2.0

New Features

• Customers who require a fully private installation can now access a setting in the KOTS admin console to ensure public IPs are not assigned to VMs. Note that with this non-public IP setting enabled, a work-around will be needed if SSH access to running jobs is required, for example, by using a VPN into your VPC.
• Customers that manage outbound traffic through a proxy can now configure proxy settings through the KOTS admin console. Please see our documentation for specifics on proxy support for server.
• We have expanded the machine execution environment options available to include additional resource classes, sizes, and executors. You now have access to Arm (medium, large), Linux (medium, large, X large, and XX large), and Windows (medium, large, XX large) resource classes.
• The insights API is now available to all server customers. Leverage build and other data to better understand the performance of teams and the health of your build and testing efforts.
• We have revamped the admin UI, and updated our installation instructions, making it easier to set up and manage server.
• You can now supply a custom Linux AMI for VM service.
• SSL termination can now be disabled - If you have put server login behind a firewall, this will enable SSL termination at the firewall.
• You can now control the size of persistent volumes. For larger customers, the initial persistent volume size was too small, by default. You can now set this at install time, providing an easier migration for those customers that require it. For further information see the Internal Database Volume Expansion doc.
• We have added an auto-scaling example to the nomad client terraform.
• You can now choose to serve ‘unsafe’ build artifacts. Previously this option was hidden, meaning potentially unsafe artifacts were rendered as plain text. For more information see the Build Artifacts doc.

Fixes

• The default windows executor was not as documented, we have increased the size to align with documentation and cloud.

Known Issues

• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for private installations, but for public installs you would need to ensure that you can access the private IP advertised, for example, by using a VPN into your VPC.
• It is currently possible for multiple organizations under the same CircleCI server account to have contexts with identical names. This should be avoided as doing so could lead to errors and unexpected behavior.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.
• The KOTS admin console cannot be upgraded if your installation is set up to be behind a proxy. The proxy settings will be deleted and cause the KOTS admin console to break.
• Runner cannot be used when server is installed behind a proxy.
• Let’s Encrypt certificate generation does not work. You will need to provide your own certificates or use the default certificates provided.

To learn more about Server 3.x installation, migration, or operations please see our documentation.

Before Upgrading

IMPORTANT: With this release, the frontend-external load balancer has been removed. The traefik load balancer now handles all incoming traffic. When updating from a previous server 3.x version, you will need to update the DNS record that was pointing to the frontend-external load balancer and have it point to the circleci-server-traefik load balancer instead. Remember, you can retrieve the external IP address or DNS name of your traefik load balancer by typing kubectl get svc/circleci-server-traefik in a terminal that has access to the cluster.

For further information see the What’s New doc.

What’s New in Release 3.1.0

New Features

• Telegraf plugins can now be added to server and customized to use third party monitoring solutions, for example, Datadog. For more information, see the Metrics and Monitoring doc.
• The option to use only private load balancers has been introduced for customers who want a fully private installation. For more information see the Load Balancers guide.
• Server 3.x hosts build artifacts, test results, and other state in object storage. We support any S3-compatible storage and Google Cloud Storage. For more information, see the Installation guide for further information.
• Dynamic config via setup workflows is now available on server installations. For more information see our blog post and the Dynamic Configuration docs page.
• Runner is now available on server. For further information, including installation steps, see the Runner docs. Runner allows the use of the macOS executor in server installations and VM service functionality for customers with server installed in a private data centre.
• The frontend load balancer from v3.0 has been removed and replaced with an Ingress resource and the Traefik Ingress controller. This is a breaking change requiring you to reconfigure your DNS. See the What’s New in server docs for further information and guidance.
• The following services can now be externalized. For setup information, see the server v3.x installation guide:
  • Postgres
  • MongoDB
  • Vault
• Backup and restore functionality is now available. For more information see the Backup and Restore guide.
• Prometheus is now deployed by default with server to monitor your cluster health and usage. Prometheus can be managed and configured from the KOTS admin UI. For further information, see the Metrics and Monitoring doc.
• Server now supports the 2XL resource class. The Nomad cluster needs to be made large enough to account for larger resource classes.
• The lifecycle of build artifacts and test results can now be configured from the KOTS admin console under Storage Object Expiry, including the option to disable the expiration and retain artifacts and test results indefinitely.

Fixes

• Resolved a collection of bugs that were causing sensitive information to be leaked into CircleCI support bundles:
  • Instances of faulty and partial redactions of secrets were detected, in part due to 3rd party bugs.
  • PostgresDB leaking sensitive information to STDOUT.
  • Several CircleCI services were logging secrets.
• Tightened network security in the Nomad terraform module.
• Terraform v0.15.0 and up are now supported.
• Updated installation scripts to use functions supported by most recent versions of Terraform.
• Resolved a bug that was leading to machine large builds being run on the wrong machine type. Machine large builds now correctly use 4 vCPUs and 16GB of RAM.
• Resolved a bug that caused contexts-service to fail on expiration of Vault client tokens.
• Resolved a bug that was causing legacy-notifier to report readiness prematurely.
• The JVM heap size parameter has been removed for all services. The heap size is set to be half of the memory limit.
• Changes to networking config and certs are now picked up automatically by Traefik. Previously, a restart would have been required.
• Minimum requirements for CPU and memory have changed. For the new values, see the Installation Prerequisites doc.

Known Issues

• Retry with SSH for jobs using the machine executor advertises a private IP address. For this reason, retry with SSH for jobs using the machine executor works as standard for private installations, but for public installs you would need to ensure that you can access the private IP advertised, for example, by using a VPN into your VPC.
• It is currently possible for multiple organizations under the same CircleCI server account to have contexts with identical names. This should be avoided as doing so could lead to errors and unexpected behavior.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.

To learn more about Server 3.0 installation, migration, or operations please see our documentation.

What’s New in Release 3.0.0

Server 3.0 is now generally available. The newest version of server offers the ability to scale under heavy workloads, all within your own Kubernetes cluster and private network, while still enjoying the full CircleCI cloud experience. Server 3.0 includes the latest CircleCI features, such as orbs, scheduled workflows, matrix jobs, and more. For existing customers interested in migrating from 2.19 to 3.x, contact your customer success manager. Server 3.0 will receive monthly patch releases and quarterly feature releases.

New Features

• New UI
• Orbs for Server
• Pipelines
• Config 2.1
• API 2.0
• Scheduled Workflows
• Matrix Jobs
• And much more…

Known Issues

• No support for external data stores (Postgres, Mongo, Vault). This feature will be implemented in a future release.
• It is currently possible for multiple organizations under the same CircleCI server account to have contexts with identical names. This should be avoided as doing so could lead to errors and unexpected behavior. This will be fixed in a future patch release.
• CircleCI 1.0 builds are not supported. If an attempt is made to run a 1.0 build, no feedback will be available in the application to indicate the cause of the issue. If a build is run on your installation and does not show up in the CircleCI application, users should be directed to use the CircleCI CLI to validate the project configuration and get details of the possible cause of the issue.
• CircleCI currently assigns a public load balancer for the frontend services. For some customers, their infrastructure or security groups won’t allow this. We will provide an optional internal local balancer for the frontend services in a future release.
• Telegraf metrics collection customization is not yet available.
• Support for GPU builders is not yet available.

To learn more about Server 3.0 installation, migration, or operations please see our documentation.

What’s New in Release 2.19.04

Fixes

• Fixed a bug that was leading to support bundle creation timing out before the Services machine logs had been created, leaving only Replicated logs.

• S3 connection pool metrics under circle.s3.connection_pool.* have been added to the test results service, making it easier to debug issues with this service.

• Add in missing environment variables for the workflows service. The absence of these environment variables was causing excessive stack tracing whenever workflows were run. This in turn lead to excessive log rotation.

• Fixed a bug that was causing failure to update GitHub statuses. Some customers experienced this bug when a project had a follower with a broken auth token.

Known Issues

• If any changes have been made to your networking configuration from the default, you should run the following steps to ensure you can use SSH to inspect your builds:
  • For customers using AWS, make sure that you have the latest Launch Configuration configured for Nomad clients, and that exiting Nomad clients were spun up using the Launch Configuration.
  • On each Nomad Client machine, create /etc/circleci/public-ipv4
  • This file should contain the public (if aplicable) or private IP of the nomad client

What’s New in Release 2.19.03

Before Upgrading

If you are using an IAM role scoped to a non-root path, you will need to unset the OUTPUT_PROCESSOR_USE_NAIVE_ROLE_MAPPING environment variable in your output processor customization script. See the Customizations Guide in our documentation for more information on using customization scripts.

Fixes

• Removed the use of the depecated GitHub.com API endpoint GET applications/%s/tokens/%s.

• Distributed tracing is now enabled by default for Server installations. Traces are used in CircleCI support bundles to improve our ability to troubleshoot Server issues. Options for the tracing sampling rate are displayed in the Replicated Management Console, but should only be changed from the default if requested by CircleCI Support.

• Fixed an issue that was preventing restore_cache from working with the storage driver set to “none” - i.e not S3.

• Fixed an issue that was preventing the output_processor service from using AWS AssumeRole when the role was located in a subfolder. This issue affected customers with security policies forcing the use of a subfolder in this case, and the symptoms included the inability to store artifacts or use timings-based test splitting.

• JVM heap size can now be changed using the JVM_HEAP_SIZE environment variable for the following services: vm-service, domain-service, permissions-service and federations-service.

Known Issues

• If any changes have been made to your networking configuration from the default, you should run the following steps to ensure you can use SSH to inspect your builds:
  • For customers using AWS, make sure that you have the latest Launch Configuration configured for Nomad clients, and that exiting Nomad clients were spun up using the Launch Configuration.
  • On each Nomad Client machine, create /etc/circleci/public-ipv4
  • This file should contain the public (if aplicable) or private IP of the nomad client

What’s New in Release 2.19.02

Fixes

• In the LDAP login flow we now use an anonymous form to POST LDAP auth state, rather than sending it as a GET parameter. Previously, when a user authenticated using LDAP, their username and password were sent in plaintext as part of a query parameter in a GET request. As requests are over HTTPS, this left usernames and passwords in request logs, etc. This issue is now fixed.

• Optimizely and Zendesk are now removed from Server release images.

• Fixed an issue in which setting CIRCLE_ADMIN_SERVER_HTTP_THREADS or CIRCLE_PUBLIC_FACING_SERVER_HTTP_THREADS too high would prevent the frontend container from starting.

• Due to changes in the GitHub API we have removed the use of ?client_id=x&client_secret=y for GitHub, and GHE versions 2.17 and later.

• Fixed an issue that was causing intermittent failures to spin up VMs with DLC in use.

• Fixed an issue that was preventing the customization of proxy settings for Docker containers. See the Nomad Client Proxy and Service Configuration Overrides guides for more infomation.

• Fixed a bug that was preventing job steps for non-failing builds being logged when proxy settings were used for the job container.

• Removed legacy TLS versions 1.0 and 1.1, in addition, enabled 1.2 and 1.3 TLS, and specified the following ciphersuites
  • ECDHE-RSA-AES256-GCM-SHA512:DHE-RSA-AES256-GCM-SHA512:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384
• Fixed a statsd configuration issue that meant some services were not emitting Telegraf metrics.

Known Issues

• If any changes have been made to your networking configuration from the default, you should run the following steps to ensure you can use SSH to inspect your builds:
  • For customers using AWS, make sure that you have the latest Launch Configuration configured for Nomad clients, and that exiting Nomad clients were spun up using the Launch Configuration.
  • On each Nomad Client machine, create /etc/circleci/public-ipv4
  • This file should contain the public (if aplicable) or private IP of the nomad client
• Classic Load Balancer is no longer available from this version due to the ciphersuite changes listed above. CircleCI no longer accepts requests from Classic Load Balancer, so you should move to Network Load Balancer (NLB) or Application Load Balancer (ALB).

What’s New in Release 2.19.01

Fixes

• Fixed a bug that was preventing some customers from upgrading due to a schema change in one of our library dependencies.

• Fixed a bug that was preventing some customers from inspecting builds via SSH due to a logic change in our build agent.

Known Issues

• If you are using an HTTP proxy for your installation, do not upgrade to v2.19.01, instead upgrade to at least v2.19.02. We have known issues around job step logging and docker commands customization that makes the v2.19.01 release incompatible with an HTTP proxy setup of CircleCI Server.

• If any changes have been made to your networking configuration you may need to run the following steps to ensure you can use SSH to inspect your builds:

  • For customers using AWS, make sure that you have the latest Launch Configuration configured for Nomad clients, and that exiting Nomad clients were spun up using the Launch Configuration.
  • On each Nomad Client machine, create /etc/circleci/public-ipv4
  • This file should contain the public (if aplicable) or private IP of the nomad client

What’s New in Release 2.19.00

Requirements

• Before upgrading to Server v2.19 your Nomad launch configuration must be updated by following this guide. Server v2.19 uses Nomad version 0.9.3, so if you have externalized Nomad, contact your support engineer before upgrading.

New Features

• You can now customize resource classes for your installation to provide developers with CPU/RAM options for the Jobs they configure. For more information see our guide to customizing resource classes in Server v2.19.

• CircleCI Server installations on AWS can now be configured to work on GovCloud. Using AWS GovCloud enables you to meet a variety of regulatory requirements, such as FedRAMP, ITAR, DoD SRG, CJIS, and HIPAA. Read more about how CircleCI helps customers meet security and compliance needs here.

Upgrades and Fixes

• For v2.19 we have updated Nomad clusters from 0.5x to 0.9, reducing the accumulation of dead jobs and improving overall performance. For more information, see the Nomad changelog.

• The image used to run the RabbitMQ server has been updated to fix vulnerabilities.

• The Server-Mongo-Upgrader service has been removed from the Services machine. Server Mongo Upgrader was a migration service written to facilitate the upgrade from Mongo 3.2 to 3.6, which was done as a part of the CircleCI Server v2.15.0 release in October 2018. This means it is not possible to upgrade directly from a Server version pre v2.15.0 to v2.19.0.

Known Issues

• If you are using an HTTP proxy for your installation, do not upgrade to v2.19.x until further notice. We have known issues around job step logging and docker commands customization that make the current 2.19.x releases incompatible with an HTTP proxy setup of CircleCI Server. This issue will be fixed in a future 2.19.x patch release and the ‘safe’ version will be flagged up clearly for affected customers.

What’s New in Release 2.18.03

Features

Following our release of Windows support on the hosted offering of CircleCI, running VM-based jobs in Windows environments is now supported on CircleCI Server instances running in AWS.

The version of Windows currently supported is Windows Server 2019. Check out the Customizing VM Service Images doc for the details of how to build your own custom Windows Server 2019 image, and then follow the Server examples in the Getting Started with Windows doc for instructions on how to set up a Windows job on your CircleCI Server installation.

Deprecation

• Server-Mongo-Upgrader will be removed in Server 2.19.0. Only effects customers running < 2.15.0.

What’s New in Release 2.18

Upgrading your installation

Our upgrade guide takes you step by step through the process of upgrading to the latest version of CircleCI Server, including any checks and updates required before starting the upgrade process.

Note: If at any time your organization name has been changed, there is a script that must be run before starting the upgrade process.

Notes and Best Practices

• We now require a minimum 32GB of RAM for the Services Machine.

• We have made some changes to our Redis configuration. If you have externalized Redis then you’ll need to update your configuration. Please contact your Customer Success Manager.

• We have also made changes to our Postgres version and require at least postgreSQL v9.5.16. If you have externalized postgreSQL then please update to at least that version in 2.17.x before upgrading to 2.18.

Known Issues

Nomad garbage collection only runs every 4 hours. This could prevent nomad jobs from running in environments with heavy usage. If you hit this bug please follow this work around:

1. Create /etc/circleconfig/schedulerer/customizations on the services machine
2. Inside /etc/circleconfig/schedulerer/customizations enter the following:

   export SCHEDULERER_NOMAD_BACKPRESSURE_MAX_PENDING_JOBS=500 
   export SCHEDULERER_NOMAD_BACKPRESSURE_MAX_DEAD_JOBS=100000
   

3. Restart the picard-scheduler container:

   sudo docker restart picard-scheduler
   

Features/Improvements

• It is now possible to restrict environment variables at run time by adding security groups to contexts. Security groups are defined as GitHub teams or LDAP groups. After a security group is added to a context, only CircleCI users who are members of that security group may access or use the environment variables of the context. For more information see our guide to restricting a context.

• Customers running storage drivers external to AWS will see improved routing times when searching for build Artifacts.

• You can now customize the metrics that get output from CircleCI. For steps and options, see our Custom Metrics guide. Below is a short list of metrics that are included by default when enabling Custom Metrics:

• You can now provide individual AMIs for both Remote Docker and machine executor jobs. Previously we provided the option for a single custom AMI to be used across both, but with v2.18, this expanded customization gives you greater control over versioning and dependencies to meet your individual CICD needs. See our VM Service guide for more information.

Bug fixes

• Additional fixes around contexts and org renames.

• Fixed an issue where occasionally volumes would fail to attach to spun up Remote docker/machine instances.

• Fixed an issue where the CircleCI integration could not be installed on JIRA instances with the jira.com subdomain.

• Fixed an issue where the Workflows page would still point to an old repo after renaming an organization.

• Fixed issue where the Workflows UI would fail to refresh data automatically.

• Improved context loading times in cases when they could cause timeouts in the UI.

• Fixed an issue where contexts would cause builds to return CIRCLE_BUG.