docs: Update upgrade v2.19 documentation

docs/Upgrade-2.19.md

@@ -37,6 +37,9 @@ This change was required to enable node restrictions via the upstream aws-iam-au
   `./bootstrap.sh crds all clusters/$CLUSTER ../../../kubezero/charts`
 
 ### Components
+- delete old fluentd deployement because labels are immutable and they changed due to the migration to new upstream helm chart  
+`kubectl delete deployment logging-fluentd -n logging`
+
 `./bootstrap.sh deploy all clusters/$CLUSTER ../../../kubezero/charts`
 
 ## Upgrade - ArgoCD
@@ -48,4 +51,4 @@ This change was required to enable node restrictions via the upstream aws-iam-au
 ## Verification / Tests
 - check if all pods are RUNNING
 - check any Ingress services
-- ...
+- ...

scripts/git-pre-receive-hook.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+#
+# Reject pushes that contain commits with messages that do not adhere
+# to the defined regex.
+
+# [1] https://www.conventionalcommits.org/en/v1.0.0/#specification
+
+set -e
+
+zero_commit='0000000000000000000000000000000000000000'
+msg_regex='/^((fixup! |squash! )?(\w+)(?:\(([^\)\s]+)\))?: (.+))(?:\n|$){0,2}?((?:^.+(\n|$))+(?:\n|$){0,2}?)+((?:^.+(\n|$))+)+/gm'
+
+while read -r oldrev newrev refname; do
+  # Branch or tag got deleted, ignore the push
+  [ "$newrev" = "$zero_commit" ] && continue
+
+  # Calculate range for new branch/updated branch
+  [ "$oldrev" = "$zero_commit" ] && range="$newrev" || range="$oldrev..$newrev"
+
+  for commit in $(git rev-list "$range" --not --all); do
+    if ! git log --max-count=1 --format=%B $commit | grep -iqE "$msg_regex"; then
+      echo "ERROR:"
+      echo "ERROR: Your push was rejected because the commit"
+      echo "ERROR: $commit in ${refname#refs/heads/}"
+      echo "ERROR: is not adhering to convential commit format."
+      echo "ERROR:"
+      echo "ERROR: Please fix the commit message and push again."
+      echo "ERROR: https://www.conventionalcommits.org/en/v1.0.0/#specification"
+      echo "ERROR"
+      exit 1
+    fi
+  done
+done