feat: Enable restart controller (#727)

* feat: Enable restart controller

* changelog

Author: sbernauer

CHANGELOG.md

@@ -9,6 +9,7 @@
     discovery advertisement, as these should remain stable regardless of listener class used to expose the REST service.
 - Support objectOverrides using `.spec.objectOverrides`.
   See [objectOverrides concepts page](https://docs.stackable.tech/home/nightly/concepts/overrides/#object-overrides) for details ([#725]).
+- Enable the [restart-controller](https://docs.stackable.tech/home/nightly/commons-operator/restarter/), so that the Pods are automatically restarted on config changes ([#727]).
 
 ### Changed
 
@@ -18,6 +19,7 @@
 [#716]: https://github.com/stackabletech/hbase-operator/pull/716
 [#724]: https://github.com/stackabletech/hbase-operator/pull/724
 [#725]: https://github.com/stackabletech/hbase-operator/pull/725
+[#727]: https://github.com/stackabletech/hbase-operator/pull/727
 
 ## [25.11.0] - 2025-11-07
 

Cargo.lock

@@ -11,7 +11,7 @@ repository = "https://github.com/stackabletech/hbase-operator"
 
 [workspace.dependencies]
 product-config = { git = "https://github.com/stackabletech/product-config.git", tag = "0.8.0" }
-stackable-operator = { git = "https://github.com/stackabletech/operator-rs.git", tag = "stackable-operator-0.101.2", features = ["telemetry", "versioned"] }
+stackable-operator = { git = "https://github.com/stackabletech/operator-rs.git", tag = "stackable-operator-0.102.0", features = ["telemetry", "versioned"] }
 
 anyhow = "1.0"
 built = { version = "0.8", features = ["chrono", "git2"] }

Cargo.nix

@@ -30,6 +30,7 @@ use stackable_operator::{
         product_image_selection::{self, ResolvedProductImage},
         rbac::build_rbac_resources,
     },
+    constants::RESTART_CONTROLLER_ENABLED_LABEL,
     k8s_openapi::{
         api::{
             apps::v1::{StatefulSet, StatefulSetSpec},
@@ -442,6 +443,10 @@ pub async fn reconcile_hbase(
                 .with_context(|_| ApplyRoleGroupConfigSnafu {
                     rolegroup: rolegroup.clone(),
                 })?;
+
+            // Note: The StatefulSet needs to be applied after all ConfigMaps and Secrets it mounts
+            // to prevent unnecessary Pod restarts.
+            // See https://github.com/stackabletech/commons-operator/issues/111 for details.
             ss_cond_builder.add(
                 cluster_resources
                     .add(client, rg_statefulset)
@@ -1095,6 +1100,7 @@ fn build_rolegroup_statefulset(
             &rolegroup_ref.role_group,
         ))
         .context(ObjectMetaSnafu)?
+        .with_label(RESTART_CONTROLLER_ENABLED_LABEL.to_owned())
         .build();
 
     let statefulset_match_labels = Labels::role_group_selector(

Cargo.toml

@@ -9,6 +9,9 @@ apiVersion: apps/v1
 kind: StatefulSet
 metadata:
   name: test-hbase-master-default
+  generation: 1 # There should be no unneeded Pod restarts
+  labels:
+    restarter.stackable.tech/enabled: "true"
 spec:
   template:
     spec:
@@ -21,6 +24,9 @@ apiVersion: apps/v1
 kind: StatefulSet
 metadata:
   name: test-hbase-regionserver-default
+  generation: 1 # There should be no unneeded Pod restarts
+  labels:
+    restarter.stackable.tech/enabled: "true"
 spec:
   template:
     spec:
@@ -33,6 +39,9 @@ apiVersion: apps/v1
 kind: StatefulSet
 metadata:
   name: test-hbase-restserver-default
+  generation: 1 # There should be no unneeded Pod restarts
+  labels:
+    restarter.stackable.tech/enabled: "true"
 spec:
   template:
     spec: