fix: avoid Helm wait hang and use explicit Loki rollout check

ansible/roles/observability/tasks/main.yml

@@ -72,32 +72,38 @@
     --namespace {{ observability_namespace }}
     --version {{ loki_chart_version }}
     --values /tmp/loki-values.yaml
-    --wait
+    --create-namespace
-    --timeout 20m
   register: loki_install
   failed_when: false
   changed_when: true
 
+- name: Wait for Loki statefulset rollout
+  command: kubectl -n {{ observability_namespace }} rollout status statefulset/loki --timeout=10m
+  register: loki_rollout
+  failed_when: false
+  changed_when: false
+  when: loki_install.rc == 0
+
 - name: Show Loki pods on install failure
   command: kubectl -n {{ observability_namespace }} get pods -l app.kubernetes.io/name=loki -o wide
   register: loki_pods_status
   changed_when: false
   failed_when: false
-  when: loki_install.rc != 0
+  when: loki_install.rc != 0 or (loki_rollout.rc | default(1)) != 0
 
 - name: Show observability PVCs on Loki install failure
   command: kubectl -n {{ observability_namespace }} get pvc -o wide
   register: loki_pvc_status
   changed_when: false
   failed_when: false
-  when: loki_install.rc != 0
+  when: loki_install.rc != 0 or (loki_rollout.rc | default(1)) != 0
 
 - name: Get Loki pod name on install failure
   shell: kubectl -n {{ observability_namespace }} get pods -l app.kubernetes.io/name=loki -o jsonpath='{.items[0].metadata.name}'
   register: loki_pod_name
   changed_when: false
   failed_when: false
-  when: loki_install.rc != 0
+  when: loki_install.rc != 0 or (loki_rollout.rc | default(1)) != 0
 
 - name: Describe Loki pod on install failure
   command: kubectl -n {{ observability_namespace }} describe pod {{ loki_pod_name.stdout }}
@@ -105,7 +111,7 @@
   changed_when: false
   failed_when: false
   when:
-    - loki_install.rc != 0
+    - loki_install.rc != 0 or (loki_rollout.rc | default(1)) != 0
     - loki_pod_name.stdout | length > 0
 
 - name: Show Loki pod logs on install failure
@@ -114,7 +120,7 @@
   changed_when: false
   failed_when: false
   when:
-    - loki_install.rc != 0
+    - loki_install.rc != 0 or (loki_rollout.rc | default(1)) != 0
     - loki_pod_name.stdout | length > 0
 
 - name: Show observability events on Loki install failure
@@ -122,7 +128,7 @@
   register: loki_events
   changed_when: false
   failed_when: false
-  when: loki_install.rc != 0
+  when: loki_install.rc != 0 or (loki_rollout.rc | default(1)) != 0
 
 - name: Fail with Loki diagnostics
   fail:
@@ -131,6 +137,9 @@
       Helm stderr:
       {{ loki_install.stderr | default('') }}
 
+      Rollout status stderr:
+      {{ loki_rollout.stderr | default('') }}
+
       Loki pods:
       {{ loki_pods_status.stdout | default('n/a') }}
 
@@ -145,7 +154,7 @@
 
       Events:
       {{ loki_events.stdout | default('n/a') }}
-  when: loki_install.rc != 0
+  when: loki_install.rc != 0 or (loki_rollout.rc | default(1)) != 0
 
 - name: Write Promtail values
   template: