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Merge pull request #47 from ibm-messaging/9.3.3
Updates for 9.3.3 and sample for K8s upgrade PDB
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95 changes: 95 additions & 0 deletions
95
samples/genericresources/kubernetesupgrade/drainMQContainers.sh
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| #!/bin/bash | ||
| # © Copyright IBM Corporation 2023 | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
|
|
||
| NAMESPACE=${1:-"default"} | ||
| DEBUG=true | ||
|
|
||
| function line_separator () { | ||
| echo "####################### $1 #######################" | ||
| } | ||
|
|
||
| function checkForUnschedulableNodes() { | ||
| line_separator "Checking for unschedulable nodes" | ||
| UNSCHEDULED_NODE_STRING=$(kubectl get nodes -o=jsonpath='{.items[?(@.spec.unschedulable==true)].metadata.name}') | ||
| if [ -z "$UNSCHEDULED_NODE_STRING" ] | ||
| then | ||
| $DEBUG && echo "[DEBUG] No nodes found" | ||
| NODE_ARRAY='' | ||
| return | ||
| else | ||
| $DEBUG && echo "[DEBUG] Found these nodes '$UNSCHEDULED_NODE_STRING'" | ||
| NODE_ARRAY=("$UNSCHEDULED_NODE_STRING") | ||
| fi | ||
| } | ||
|
|
||
| function findMQPodsOnNode(){ | ||
| TARGET_NODE=$1 | ||
| line_separator "Finding MQ Pods on $TARGET_NODE" | ||
| MQ_PODS=$(kubectl get pods --field-selector spec.nodeName="$TARGET_NODE" -n "$NAMESPACE" -l app.kubernetes.io/name=ibm-mq -o jsonpath='{.items[*].metadata.name}') | ||
| if [ -z "$MQ_PODS" ] | ||
| then | ||
| $DEBUG && echo "[DEBUG] No MQ pods found" | ||
| return | ||
| else | ||
| $DEBUG && echo "[DEBUG] Found these pods '$MQ_PODS'" | ||
| DELETE_POD=false | ||
| MQ_PODS_ARRAY=("$MQ_PODS") | ||
| for i in "${MQ_PODS_ARRAY[@]}" | ||
| do | ||
| $DEBUG && echo "[DEBUG] Checking if '$i' has quorum" | ||
| QMGR_STATUS=$(kubectl exec "$i" -n "$NAMESPACE" -- dspmq -o nativeha) | ||
| QUORUM_STATUS=${QMGR_STATUS#*QUORUM(} | ||
| RUNNING_CONTAINERS=${QUORUM_STATUS%%/*} | ||
| $DEBUG && echo "[DEBUG] '$i' has a quorum status of '$RUNNING_CONTAINERS'" | ||
| QMGR_CONNECTIONS=$(kubectl exec "$i" -n "$NAMESPACE" -- dspmq -o nativeha -x | grep -c "CONNACTV(yes)" ) | ||
| $DEBUG && echo "[DEBUG] '$i' has active connections to '$QMGR_CONNECTIONS' instances" | ||
| if [ "$RUNNING_CONTAINERS" -eq 3 ] && [ "$QMGR_CONNECTIONS" -eq 3 ] | ||
| then | ||
| $DEBUG && echo "[DEBUG] Queue Manager has $RUNNING_CONTAINERS containers so safe to delete one instance" | ||
| DELETE_RESPONSE=$(kubectl delete pod "$i" -n "$NAMESPACE") | ||
| $DEBUG && echo "[DEBUG] Pod delete response: $DELETE_RESPONSE" | ||
| DELETE_POD=true | ||
| else | ||
| $DEBUG && echo "[DEBUG] Unsafe to delete Pod - doing nothing and will auto-retry during the next loop" | ||
| fi | ||
| done | ||
| fi | ||
|
|
||
| if [ $DELETE_POD = "true" ] | ||
| then | ||
| $DEBUG && echo "[DEBUG] Deleted pods on worker node so sleeping for 10 seconds for quorum status to correct" | ||
| sleep 10 | ||
| else | ||
| $DEBUG && echo "[DEBUG] No pods deleted" | ||
| fi | ||
| } | ||
|
|
||
| while true | ||
| do | ||
| echo "" | ||
| line_separator "Starting check" | ||
|
|
||
| checkForUnschedulableNodes | ||
| if [ -n "$NODE_ARRAY" ] | ||
| then | ||
| for node_item in "${NODE_ARRAY[@]}" | ||
| do | ||
| $DEBUG && echo "[DEBUG] Processing node '$node_item'" | ||
| findMQPodsOnNode "$node_item" | ||
| done | ||
| fi | ||
| echo "" | ||
| sleep 30 | ||
| done |
23 changes: 23 additions & 0 deletions
23
samples/genericresources/kubernetesupgrade/mqnativeha-pdb.yaml
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| # © Copyright IBM Corporation 2023 | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
| apiVersion: policy/v1 | ||
| kind: PodDisruptionBudget | ||
| metadata: | ||
| name: mqnativeha-pdb | ||
| spec: | ||
| maxUnavailable: 1 | ||
| selector: | ||
| matchLabels: | ||
| app.kubernetes.io/instance: secureapphelm | ||
| app.kubernetes.io/name: ibm-mq |