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new 76fb0bb docs: Update README for PodDisruptionBudget issue during
Pulsar upgrade (#420)
76fb0bb is described below
commit 76fb0bb45c117f8395fc42df9e791f3dd5c8dabe
Author: Ashok <[email protected]>
AuthorDate: Fri Dec 22 20:18:15 2023 +0530
docs: Update README for PodDisruptionBudget issue during Pulsar upgrade
(#420)
---
README.md | 31 +++++++++++++++++++++++++++++++
1 file changed, 31 insertions(+)
diff --git a/README.md b/README.md
index ec86cec..3ff15ce 100644
--- a/README.md
+++ b/README.md
@@ -238,6 +238,37 @@ Caused by: org.rocksdb.RocksDBException: while open a file
for lock: /pulsar/dat
... 13 more
```
+### Recovering from `helm upgrade` error "unable to build kubernetes objects
from current release manifest"
+
+Example of the error message:
+```bash
+Error: UPGRADE FAILED: unable to build kubernetes objects from current release
manifest:
+[resource mapping not found for name: "pulsar-bookie" namespace: "pulsar" from
"":
+no matches for kind "PodDisruptionBudget" in version "policy/v1beta1" ensure
CRDs are installed first,
+resource mapping not found for name: "pulsar-broker" namespace: "pulsar" from
"":
+no matches for kind "PodDisruptionBudget" in version "policy/v1beta1" ensure
CRDs are installed first,
+resource mapping not found for name: "pulsar-zookeeper" namespace: "pulsar"
from "":
+no matches for kind "PodDisruptionBudget" in version "policy/v1beta1" ensure
CRDs are installed first]
+```
+
+Helm documentation [explains issues with managing releases deployed using
outdated APIs](https://helm.sh/docs/topics/kubernetes_apis/#helm-users) when
the Kubernetes cluster has been upgraded
+to a version where these APIs are removed. This happens regardless of whether
the chart in the upgrade includes supported API versions.
+In this case, you can use the following workaround:
+
+1. Install the [Helm mapkubeapis
plugin](https://github.com/helm/helm-mapkubeapis):
+
+ ```bash
+ helm plugin install https://github.com/helm/helm-mapkubeapis
+ ```
+
+2. Run the `helm mapkubeapis` command with the appropriate namespace and
release name. In this example, we use the namespace "pulsar" and release name
"pulsar":
+
+ ```bash
+ helm mapkubeapis --namespace pulsar pulsar
+ ```
+
+This workaround addresses the issue by updating in-place Helm release metadata
that contains deprecated or removed Kubernetes APIs to a new instance with
supported Kubernetes APIs and should allow for a successful Helm upgrade.
+
## Uninstall
To uninstall the Pulsar Chart, run the following command:
