feat: run containerdebug in the background

Author: razvan

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 - The lifetime of auto generated TLS certificates is now configurable with the role and roleGroup
   config property `requestedSecretLifetime`. This helps reducing frequent Pod restarts ([#598]).
+- Run a `containerdebug` process in the background of each HBase container to collect debugging information ([#605]).
 
 ### Fixed
 
@@ -15,6 +16,7 @@
 
 [#594]: https://github.com/stackabletech/hbase-operator/pull/594
 [#598]: https://github.com/stackabletech/hbase-operator/pull/598
+[#605]: https://github.com/stackabletech/hbase-operator/pull/605
 
 ## [24.11.0] - 2024-11-18
 

rust/operator-binary/src/hbase_controller.rs

@@ -881,6 +881,7 @@ fn build_rolegroup_statefulset(
             {COMMON_BASH_TRAP_FUNCTIONS}
             {remove_vector_shutdown_file_command}
             prepare_signal_handlers
+            CONTAINERDEBUG_LOG_DIRECTORY={STACKABLE_LOG_DIR}/containerdebug containerdebug --output={STACKABLE_LOG_DIR}/containerdebug-state.json --loop &
             bin/hbase {hbase_role_name_in_command} start &
             wait_for_termination $!
             {create_vector_shutdown_file_command}

tests/templates/kuttl/smoke/30-assert.yaml

@@ -67,3 +67,12 @@ status:
   expectedPods: 2
   currentHealthy: 2
   disruptionsAllowed: 1
+---
+# This test checks if the containerdebug-state.json file is present and valid
+apiVersion: kuttl.dev/v1beta1
+kind: TestAssert
+timeout: 60
+commands:
+  - script: kubectl exec -n $NAMESPACE --container hbase test-hbase-master-default-0 -- cat /stackable/log/containerdebug-state.json | jq --exit-status
+  - script: kubectl exec -n $NAMESPACE --container hbase test-hbase-regionserver-default-0 -- cat /stackable/log/containerdebug-state.json | jq --exit-status
+  - script: kubectl exec -n $NAMESPACE --container hbase test-hbase-restserver-default-0 -- cat /stackable/log/containerdebug-state.json | jq --exit-status