In the releases section of the documentation, you can find the release notes and upgrade instructions for each release of cert-manager. It also contains information on the breaking changes between each release and things to look out for when upgrading.
Note: Before performing upgrades of cert-manager, it is advised to take a backup of all your cert-manager resources just in case an issue occurs whilst upgrading. You can read how to backup and restore cert-manager in the backup and restore guide.
We recommend that you upgrade cert-manager one minor version at a time, always choosing the latest patch version for the minor version. You should always read the release notes for the minor version to which you are upgrading. In cases where a large version jump is needed to get an installation up to date, it may be possible to do a full uninstall and re-install of cert-manager without application downtime and/or unnecessary re-issuances, however we do not guarantee that this will work for your particular setup see Reinstalling cert-manager.
If you installed cert-manager using Helm, you can easily upgrade using the Helm CLI.
Note: Before upgrading, please read the relevant instructions at the links below for your from and to version.
Once you have read the relevant upgrading notes and taken any appropriate
actions, you can begin the upgrade process like so - replacing
with the name of your Helm release for cert-manager (usually this is
cert-manager) and replacing
<version> with the version number you want to
Add the Jetstack Helm repository (if you haven't already) and update it.
helm repo add jetstack https://charts.jetstack.iohelm repo update jetstack
The helm upgrade command will upgrade cert-manager to the specified or latest version of cert-manager, as listed on the cert-manager Helm chart documentation page.
Note: You can find out your release name using
helm list | grep cert-manager.
If you have installed the CRDs separately (instead of with the
option added to your Helm install command), you should upgrade your CRD resources first:
kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/<version>/cert-manager.crds.yaml
And then upgrade the Helm chart:
helm upgrade --version <version> <release_name> jetstack/cert-manager
If you have installed the CRDs together with the helm install command, you should include CRD resources when upgrading the Helm chart:
helm upgrade --set installCRDs=true --version <version> <release_name> jetstack/cert-manager
If you installed cert-manager using the static deployment manifests published on each release, you can upgrade them in a similar way to how you first installed them.
Note: Before upgrading, please read the relevant instructions at the links below Note: for your from and to version.
Once you have read the relevant notes and taken any appropriate actions, you can
begin the upgrade process like so - replacing
<version> with the version
number you want to install:
kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/<version>/cert-manager.yaml
Once you have deployed the new version of cert-manager, you can verify the installation.
In some cases there may be a need to do a full uninstall and re-install of cert-manager. An example could be when a very old cert-manager version needs to be brought up to date and it isn't feasible to upgrade one minor version at a time, which is our default recommended upgrade strategy.
See Reinstalling cert-manager for a full guide on how to do this without any issues.