fix(manifests): use params CM and env var for redis server (#13214)

docs/operator-manual/upgrading/2.6-2.7.md

@@ -81,3 +81,12 @@ Read the full [documentation](../deep_links.md) to see all possible combinations
 Argo CD now supports the `helm.sh/resource-policy` annotation to control the deletion of resources. The behavior is the same as the behavior of
 `argocd.argoproj.io/sync-options: Delete=false` annotation: if the annotation is present and set to `keep`, the resource will not be deleted
 when the application is deleted.
+
+## Check your Kustomize patches for `--redis` changes
+
+Starting in Argo CD 2.7, the install manifests no longer pass the Redis server name via `--redis`. 
+
+If your environment uses Kustomize JSON patches to modify the Redis server name, the patch might break when you upgrade
+to the 2.7 manifests. If it does, you can remove the patch and instead set the Redis server name via the `redis.server` 
+field in the argocd-cmd-params-cm ConfigMap. That value will be passed to the necessary components via `valueFrom` 
+environment variables.

manifests/base/redis/argocd-redis-deployment.yaml

@@ -30,9 +30,6 @@ spec:
         - ""
         - "--appendonly"
         - "no"
-        env:
-        - name: ARGOCD_REDIS_SERVICE
-          value: ""
         ports:
         - containerPort: 6379
         securityContext:

manifests/base/redis/kustomization.yaml

@@ -7,15 +7,3 @@ resources:
 - argocd-redis-sa.yaml
 - argocd-redis-service.yaml
 - argocd-redis-network-policy.yaml
-
-replacements:
-  - source:
-      kind: Service
-      name: argocd-redis
-      version: v1
-    targets:
-      - select:
-          kind: Deployment
-          name: argocd-redis
-        fieldPaths:
-          - spec.template.spec.containers.[name=redis].env.[name=ARGOCD_REDIS_SERVICE].value

manifests/base/repo-server/argocd-repo-server-deployment.yaml

@@ -23,8 +23,6 @@ spec:
         imagePullPolicy: Always
         args:
           - /usr/local/bin/argocd-repo-server
-          - "--redis"
-          - "$(ARGOCD_REDIS_SERVICE):6379"
         env:
           - name: ARGOCD_RECONCILIATION_TIMEOUT
             valueFrom:

manifests/core-install.yaml

@@ -16807,9 +16807,6 @@ spec:
         - ""
         - --appendonly
         - "no"
-        env:
-        - name: ARGOCD_REDIS_SERVICE
-          value: argocd-redis
         image: redis:7.0.11-alpine
         imagePullPolicy: Always
         name: redis
@@ -16863,8 +16860,6 @@ spec:
       containers:
       - args:
         - /usr/local/bin/argocd-repo-server
-        - --redis
-        - $(ARGOCD_REDIS_SERVICE):6379
         env:
         - name: ARGOCD_RECONCILIATION_TIMEOUT
           valueFrom:

manifests/ha/base/kustomization.yaml

@@ -6,6 +6,7 @@ patches:
 - path: overlays/argocd-repo-server-deployment.yaml
 - path: overlays/argocd-server-deployment.yaml
 - path: overlays/argocd-application-controller-statefulset.yaml
+- path: overlays/argocd-cmd-params-cm.yaml
 
 
 images:

manifests/ha/base/overlays/argocd-application-controller-statefulset.yaml

@@ -9,5 +9,9 @@ spec:
       - name: argocd-application-controller
         args:
         - /usr/local/bin/argocd-application-controller
-        - --redis
-        - "argocd-redis-ha-haproxy:6379"
+        env:
+        - name: ARGOCD_REDIS
+          valueFrom:
+            configMapKeyRef:
+              name: argocd-cmd-params-cm
+              key: redis.server

manifests/ha/base/overlays/argocd-cmd-params-cm.yaml

@@ -0,0 +1,6 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: argocd-cmd-params-cm
+data:
+  redis.server: argocd-redis-ha-haproxy:6379

manifests/ha/base/overlays/argocd-repo-server-deployment.yaml

@@ -24,5 +24,9 @@ spec:
       - name: argocd-repo-server
         args:
         - /usr/local/bin/argocd-repo-server
-        - --redis
-        - "argocd-redis-ha-haproxy:6379"
+        env:
+        - name: ARGOCD_REDIS
+          valueFrom:
+            configMapKeyRef:
+              name: argocd-cmd-params-cm
+              key: redis.server

manifests/ha/base/overlays/argocd-server-deployment.yaml

@@ -25,7 +25,10 @@ spec:
         env:
         - name: ARGOCD_API_SERVER_REPLICAS
           value: '2'
+        - name: ARGOCD_REDIS
+          valueFrom:
+            configMapKeyRef:
+              name: argocd-cmd-params-cm
+              key: redis.server
         args:
         - /usr/local/bin/argocd-server
-        - --redis
-        - "argocd-redis-ha-haproxy:6379"

manifests/ha/install.yaml

@@ -16777,6 +16777,8 @@ metadata:
   name: argocd-cm
 ---
 apiVersion: v1
+data:
+  redis.server: argocd-redis-ha-haproxy:6379
 kind: ConfigMap
 metadata:
   labels:
@@ -18284,9 +18286,12 @@ spec:
       containers:
       - args:
         - /usr/local/bin/argocd-repo-server
-        - --redis
-        - argocd-redis-ha-haproxy:6379
         env:
+        - name: ARGOCD_REDIS
+          valueFrom:
+            configMapKeyRef:
+              key: redis.server
+              name: argocd-cmd-params-cm
         - name: ARGOCD_RECONCILIATION_TIMEOUT
           valueFrom:
             configMapKeyRef:
@@ -18547,11 +18552,14 @@ spec:
       containers:
       - args:
         - /usr/local/bin/argocd-server
-        - --redis
-        - argocd-redis-ha-haproxy:6379
         env:
         - name: ARGOCD_API_SERVER_REPLICAS
           value: "2"
+        - name: ARGOCD_REDIS
+          valueFrom:
+            configMapKeyRef:
+              key: redis.server
+              name: argocd-cmd-params-cm
         - name: ARGOCD_SERVER_INSECURE
           valueFrom:
             configMapKeyRef:
@@ -18855,9 +18863,12 @@ spec:
       containers:
       - args:
         - /usr/local/bin/argocd-application-controller
-        - --redis
-        - argocd-redis-ha-haproxy:6379
         env:
+        - name: ARGOCD_REDIS
+          valueFrom:
+            configMapKeyRef:
+              key: redis.server
+              name: argocd-cmd-params-cm
         - name: ARGOCD_CONTROLLER_REPLICAS
           value: "1"
         - name: ARGOCD_RECONCILIATION_TIMEOUT

manifests/ha/namespace-install.yaml

@@ -437,6 +437,8 @@ metadata:
   name: argocd-cm
 ---
 apiVersion: v1
+data:
+  redis.server: argocd-redis-ha-haproxy:6379
 kind: ConfigMap
 metadata:
   labels:
@@ -1944,9 +1946,12 @@ spec:
       containers:
       - args:
         - /usr/local/bin/argocd-repo-server
-        - --redis
-        - argocd-redis-ha-haproxy:6379
         env:
+        - name: ARGOCD_REDIS
+          valueFrom:
+            configMapKeyRef:
+              key: redis.server
+              name: argocd-cmd-params-cm
         - name: ARGOCD_RECONCILIATION_TIMEOUT
           valueFrom:
             configMapKeyRef:
@@ -2207,11 +2212,14 @@ spec:
       containers:
       - args:
         - /usr/local/bin/argocd-server
-        - --redis
-        - argocd-redis-ha-haproxy:6379
         env:
         - name: ARGOCD_API_SERVER_REPLICAS
           value: "2"
+        - name: ARGOCD_REDIS
+          valueFrom:
+            configMapKeyRef:
+              key: redis.server
+              name: argocd-cmd-params-cm
         - name: ARGOCD_SERVER_INSECURE
           valueFrom:
             configMapKeyRef:
@@ -2515,9 +2523,12 @@ spec:
       containers:
       - args:
         - /usr/local/bin/argocd-application-controller
-        - --redis
-        - argocd-redis-ha-haproxy:6379
         env:
+        - name: ARGOCD_REDIS
+          valueFrom:
+            configMapKeyRef:
+              key: redis.server
+              name: argocd-cmd-params-cm
         - name: ARGOCD_CONTROLLER_REPLICAS
           value: "1"
         - name: ARGOCD_RECONCILIATION_TIMEOUT

manifests/install.yaml

@@ -17307,9 +17307,6 @@ spec:
         - ""
         - --appendonly
         - "no"
-        env:
-        - name: ARGOCD_REDIS_SERVICE
-          value: argocd-redis
         image: redis:7.0.11-alpine
         imagePullPolicy: Always
         name: redis
@@ -17363,8 +17360,6 @@ spec:
       containers:
       - args:
         - /usr/local/bin/argocd-repo-server
-        - --redis
-        - $(ARGOCD_REDIS_SERVICE):6379
         env:
         - name: ARGOCD_RECONCILIATION_TIMEOUT
           valueFrom:

manifests/namespace-install.yaml

@@ -967,9 +967,6 @@ spec:
         - ""
         - --appendonly
         - "no"
-        env:
-        - name: ARGOCD_REDIS_SERVICE
-          value: argocd-redis
         image: redis:7.0.11-alpine
         imagePullPolicy: Always
         name: redis
@@ -1023,8 +1020,6 @@ spec:
       containers:
       - args:
         - /usr/local/bin/argocd-repo-server
-        - --redis
-        - $(ARGOCD_REDIS_SERVICE):6379
         env:
         - name: ARGOCD_RECONCILIATION_TIMEOUT
           valueFrom: