added env var to non-olm-install script and updated docs

Signed-off-by: Raghavi Shirur <rshirur@redhat.com>

Author: raghavi101

hack/non-olm-install/README.md

@@ -86,6 +86,7 @@ The following environment variables can be set to configure various options for
 | **SERVER_CLUSTER_ROLE** |This environment variable enables administrators to configure a common cluster role to use across all of the managed namespaces in the role bindings the operator creates for the Argo CD server. | None |
 | **WATCH_NAMESPACE** | namespaces in which Argo applications can be created | None |
 | **ENABLE_CONVERSION_WEBHOOK** | This environment variable enables conversion webhook to convert v1alpha1 ArgoCD resources to v1beta1 | true |
+| **ARGOCD_LABEL_SELECTOR** | This environment variable will enable the operator to reconcile only the corresponding ArgoCD instances having the matching label selector. The label selector can be set on argocd-opertor by exporting `ARGOCD_LABEL_SELECTOR` (eg: `export ARGOCD_LABEL_SELECTOR=foo=bar`). The labels can be added to the argocd instances using the command `kubectl label argocd test1 foo=bar -n test-argocd`. | None |
 ### Running the script
 
 #### Usage

hack/non-olm-install/install-gitops-operator.sh

@@ -41,6 +41,7 @@ CONTROLLER_CLUSTER_ROLE=${CONTROLLER_CLUSTER_ROLE:-""}
 DISABLE_DEFAULT_ARGOCD_INSTANCE=${DISABLE_DEFAULT_ARGOCD_INSTANCE:-"false"}
 SERVER_CLUSTER_ROLE=${SERVER_CLUSTER_ROLE:-""}
 WATCH_NAMESPACE=${WATCH_NAMESPACE:-""}
+ARGOCD_LABEL_SELECTOR=${ARGOCD_LABEL_SELECTOR:-""}
 ENABLE_CONVERSION_WEBHOOK=${ENABLE_CONVERSION_WEBHOOK:-"true"}
 
 # Print help message
@@ -232,6 +233,8 @@ spec:
           value: \"${SERVER_CLUSTER_ROLE}\"
         - name: WATCH_NAMESPACE
           value: \"${WATCH_NAMESPACE}\"
+        - name: ARGOCD_LABEL_SELECTOR
+          value: \"${ARGOCD_LABEL_SELECTOR}\"
         - name: ENABLE_CONVERSION_WEBHOOK
           value: \"${ENABLE_CONVERSION_WEBHOOK}\"" > ${WORK_DIR}/env-overrides.yaml
 }
@@ -449,6 +452,9 @@ function print_info() {
   if [ ! -z "${WATCH_NAMESPACE}" ]; then
     echo "WATCH_NAMESPACE: ${WATCH_NAMESPACE}"
   fi
+  if [ ! -z "${ARGOCD_LABEL_SELECTOR}" ]; then
+    echo "ARGOCD_LABEL_SELECTOR: ${ARGOCD_LABEL_SELECTOR}"
+  fi
   if [ ! -z "${ENABLE_CONVERSION_WEBHOOK}" ]; then
     echo "ENABLE_CONVERSION_WEBHOOK: ${ENABLE_CONVERSION_WEBHOOK}"
   fi