cleanup: make the scripts error free

Author: Shabirmean

extras/cloudsql-multicluster/README.md

@@ -73,7 +73,7 @@ gcloud container clusters get-credentials ${CLUSTER_2_NAME} --zone ${CLUSTER_2_Z
 kubectx cluster2="gke_${PROJECT_ID}_${CLUSTER_2_ZONE}_${CLUSTER_2_NAME}"
 ```
 
-6. **Set up Workload Identity** for both clusters. When the script is run for the second time, you'll see some errors (GCP service account already exists), this is ok.
+6. **Set up Workload Identity** for both clusters.
 
 ```
 kubectx cluster1
@@ -83,7 +83,7 @@ kubectx cluster2
 ../cloudsql/setup_workload_identity.sh
 ```
 
-7. **Run the Cloud SQL instance create script** on both clusters. You'll see errors when running on the second cluster, this is ok.
+7. **Run the Cloud SQL instance create script** on both clusters.
 
 ```
 kubectx cluster1

extras/cloudsql/create_cloudsql_instance.sh

@@ -19,10 +19,13 @@ echo "☁️ Enabling the Cloud SQL API..."
 gcloud config set project ${PROJECT_ID}
 gcloud services enable sqladmin.googleapis.com
 
-echo "☁️ Creating Cloud SQL instance: ${INSTANCE_NAME} ..."
-gcloud sql instances create $INSTANCE_NAME \
+CSQL_EXISTS=$(gcloud sql instances list --filter="${INSTANCE_NAME}")
+if [ $CSQL_EXISTS = "Listed 0 items." ]; then
+  echo "☁️ Creating Cloud SQL instance: ${INSTANCE_NAME} ..."
+  gcloud sql instances create $INSTANCE_NAME \
     --database-version=POSTGRES_12 --tier=db-custom-1-3840 \
     --region=${DB_REGION} --project ${PROJECT_ID}
+fi
 
 echo "☁️ All done creating ${INSTANCE_NAME} ..."
 INSTANCE_CONNECTION_NAME=$(gcloud sql instances describe $INSTANCE_NAME --format='value(connectionName)')
@@ -32,11 +35,17 @@ gcloud sql users create admin \
    --instance=$INSTANCE_NAME --password=admin
 
 # Create Accounts DB
-echo "☁️ Creating accounts-db in ${INSTANCE_NAME}..."
-gcloud sql databases create accounts-db --instance=$INSTANCE_NAME
+ACCOUNTS_DB_EXISTS=$(gcloud sql databases list --instance=${INSTANCE_NAME} --filter="accounts-db")
+if [ $ACCOUNTS_DB_EXISTS = "Listed 0 items." ]; then
+  echo "☁️ Creating accounts-db in ${INSTANCE_NAME}..."
+  gcloud sql databases create accounts-db --instance=$INSTANCE_NAME
+fi
 
 # Create Ledger DB
-echo "☁️ Creating ledger-db in ${INSTANCE_NAME}..."
-gcloud sql databases create ledger-db --instance=$INSTANCE_NAME
+LEDGER_DB_EXISTS=$(gcloud sql databases list --instance=${INSTANCE_NAME} --filter="ledger-db")
+if [ $LEDGER_DB_EXISTS = "Listed 0 items." ]; then
+  echo "☁️ Creating ledger-db in ${INSTANCE_NAME}..."
+  gcloud sql databases create ledger-db --instance=$INSTANCE_NAME
+fi
 
-echo "⭐️ Done."
+echo "⭐️ Done."

extras/cloudsql/setup_workload_identity.sh

@@ -25,8 +25,11 @@ kubectl create namespace $NAMESPACE
 
 echo "✅ Creating GCP and K8s service accounts..."
 kubectl create serviceaccount --namespace $NAMESPACE $KSA_NAME
-gcloud iam service-accounts create $GSA_NAME
 
+SA_EXISTS=$(gcloud iam service-accounts list --filter="${GSA_NAME}")
+if [ $SA_EXISTS = "Listed 0 items." ]; then
+   gcloud iam service-accounts create $GSA_NAME
+fi
 
 echo "✅ Annotating service accounts to connect your GSA and KSA..."
 gcloud iam service-accounts add-iam-policy-binding \
@@ -53,4 +56,4 @@ gcloud projects add-iam-policy-binding ${PROJECT_ID} \
   --member "serviceAccount:${GSA_NAME}@${PROJECT_ID}.iam.gserviceaccount.com" \
   --role roles/cloudsql.client
 
-echo "⭐️ Done."
+echo "⭐️ Done."