add command to create psql-client on k8s

bin/ops/run-k8s-psql-client.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+
+set -e
+
+function echo_usage() {
+    echo "Usage:"
+    echo "  $0 <namespace> <db-name>"
+}
+
+if [ -z "$1" ]; then
+  echo "Missing Kubernetes namespace."
+  echo_usage
+  exit 1
+fi
+
+if [ -z "$2" ]; then
+  echo "Missing database name."
+  echo_usage
+  exit 1
+fi
+
+NS="${1}"
+DB_NAME="${2}"
+
+DB_HOST="$(kubectl -n $NS get configmap postgresql-php-config -o "jsonpath={.data['POSTGRES_HOST']}")"
+DB_PORT="$(kubectl -n $NS get configmap postgresql-php-config -o "jsonpath={.data['POSTGRES_PORT']}")"
+DB_USER="$(kubectl -n $NS get secret postgresql-secret -o "jsonpath={.data['POSTGRES_USER']}" | base64 -d)"
+
+POD=db-psql-client
+
+kubectl -n $NS delete pod ${POD} || true
+
+cat <<EOF | kubectl -n $NS apply -f -
+apiVersion: v1
+kind: Pod
+metadata:
+  name: ${POD}
+spec:
+  containers:
+  - name: postgresql-client
+    image: postgres:14.4-alpine
+    command: [ "/bin/sh", "-c", "--" ]
+    args: [ "while true; do sleep 10; done;" ]
+    env:
+      - name: PGPASSWORD
+        valueFrom:
+          secretKeyRef:
+            name: postgresql-secret
+            key: POSTGRES_PASSWORD
+EOF
+
+kubectl -n $NS wait --for=condition=Ready pod/${POD}
+kubectl -n $NS exec -ti ${POD} -- psql --username=${DB_USER} --host=${DB_HOST} --port=${DB_PORT} ${DB_USER}_${DB_NAME}
+
+kubectl -n $NS delete pod ${POD} --force 2> /dev/null