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ae278797be
Without this patch the READMEs for the Helm Charts do not provide any documentation on how to upgrade to a newer version. There is at least one known issue when updating to a newer versions that is unavoidable as of writing. There is a workaround for the issue which should be documented in the upgrade section. This is a problem because currently the only way to find this workaround is to go through closed GitHub issues. These might not be around at the time someone needs this information. Furthermore the issue should be communicated to the operator before it occurs. This patch adds basic documentation for updating the Helm repository, and upgrading the installed release of the Helm Chart. How values can be set is not part of the documentation. If an operator used custom values, e.g. for the secret, they probably already know how to deal with setting values. However, the docs still remind the reader to take values into account. Reusing the installed values (`--reuse-values`) has lead to problems in past, which is why it is explicitly discouraged. An example for this would be the value `logLevel` which was changed to `sidecarLogLevel`. Reusing values lead to `.Values.sidecarLogLevel` being empty and the `csi-provisioner` not being started due to invalid value `-v=""`. Comparing new values with set values is encouraged. The workaround for issue #3397 from GitHub is being addressed in the section Know Issues Upgrading. Signed-off-by: Christian Kugler <syphdias+git@gmail.com> |
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