- This release fixes a bug introduced in v2.2.5 when Etcd Snapshots fail to create in airgap setup with private registry set 
As a result, the following versions are now latest and stable:
|Type||Rancher Version||Docker Tag||Helm Repo||Helm Chart Version|
Please review our version documentation for more details on versioning and tagging conventions.
Features and Enhancements
Major Bug Fixed Since v2.2.5
- Fixed an issue when Etcd Snapshots fail to create in airgap setup with private registry set 
- Fixed an issue when clicking “Enable monitoring” link in cluster dashboard wasn’t working 
- Fixed an issue when configuring S3 snapshots using IAM profile wasn’t possible as Secret Key parameter was required for snapshot configuration in Rancher UI/API 
Certificate expiry on Rancher provisioned clusters
In Rancher 2.0 and 2.1, the auto generated certificates for Rancher provisioned clusters have 1 year of expiry. It means if you created a Rancher provisioned cluster about 1 year ago, you need to rotate the certificates, otherwise the cluster will go into a bad state when the certificate expires. In Rancher 2.2.x, the rotation can be performed from Rancher UI, more details are here.
Additional Steps Required for Air Gap Installations and Upgrades
In v2.2.0, we’ve introduced a “system catalog” for managing micro-services that Rancher deploys for certain features such as Global DNS, Alerts, and Monitoring. These additional steps are documented as part of air gap installation instructions.
Known Major Issues
- Cluster alerting and logging can get stuck in Updating state after upgrading Rancher. Workaround steps are provided in the issue 
- Certificate rotate for Rancher provisioned clusters will not work for the clusters which certificates had expired on Rancher versions v2.0.13 and earlier on 2.0.x release line, and 2.1.8 or earlier on 2.1.x release line. The issue won’t exist if the certificates expired on later versions of Rancher. Steps to workaround can be found in comments to 
- Catalog app revisions are not visible to the regular user; as a result regular user is not able to rollback the app 
- Global DNS entries are not properly updated when a node that was hosting an associated ingress becomes unavailable. A records to the unavailable hosts will remain on the ingress and in the DNS entry [#18932]
- If you have Rancher cluster with OpenStack cloud provider having LoadBalancer set, and the cluster was provisioned on version 2.2.3 or less, the upgrade to the Rancher version v2.2.4 and up will fail. Steps to mitigate can be found in the comment to 
System Charts Branch - For air gap installs
- system charts branch -
release-v2.2- This is the branch used to populate the catalog items required for tools such as monitoring, logging, alerting and global DNS. To be able to use these features in an air gap install, you will need to mirror the
system-chartsrepository to a location in your network that Rancher can reach and configure Rancher to use that repository.
Upgrades and Rollbacks
Due to the HA improvements introduced in the v2.1.0 release, the Rancher helm chart is the only supported method for installing or upgrading Rancher. Please use the Rancher helm chart to install HA Rancher. For details, see the HA Install - Installation Outline.
If you are currently using the RKE add-on install method, see Migrating from a RKE add-on install for details on how to move to using a helm chart.
Any upgrade from a version prior to v2.0.3, when scaling up workloads, new pods will be created [#14136] - In order to update scheduling rules for workloads [#13527], a new field was added to all workloads on
update, which will cause any pods in workloads from previous versions to re-create.
Note: When rolling back, we are expecting you to rollback to the state at the time of your upgrade. Any changes post upgrade would not be reflected. In the case of rolling back using a Rancher single-node install, you must specify the exact version you want to change the Rancher version to, rather than using the default
Note: If you had the helm stable catalog enabled in v2.0.0, we’ve updated the catalog to start pointing directly to the Kubernetes helm repo instead of an internal repo. Please delete the custom catalog that is now showing up and re-enable the helm stable. [#13582]