Add sample for creating weblogic credentials secret

Signed-off-by: doxiao <[email protected]>

Author: doxiao

kubernetes/samples/README.md

@@ -2,6 +2,7 @@
 
 ## Sample scripts
 
+* [Sample Secret for WebLogic Amin Credentials](scripts/create-weblogic-domain/create-weblogic-credentials.sh) for creating a Kubernetes secret that contains the admin server credentials. This secret can then be used in creating a WebLogic domain custom resource.
 * [Sample PV and PVC](scripts/create-weblogic-domain-pv-pvc/README.md) for creating a PV or PVC that can be used by a domain custom resource as the persistent storage for the WebLogic domain home or log files.
 * [Sample domain home on a persistent volume](scripts/create-weblogic-domain/domain-home-on-pv/README.md) for creating a WebLogic domain home on an existing PV or PVC, and the domain customer resource YAML file for deploying the generated WebLogic domain.
 * [Sample Elasticsearch and Kibana configuration](scripts/elasticsearch_and_kibana.yaml) for configuring the Elasticsearch and Kibana deployments and services for the operator's logs.

kubernetes/samples/scripts/create-weblogic-domain/create-weblogic-credentials.sh

@@ -0,0 +1,124 @@
+#!/usr/bin/env bash
+# Copyright 2018, Oracle Corporation and/or its affiliates.  All rights reserved.
+# Licensed under the Universal Permissive License v 1.0 as shown at http://oss.oracle.com/licenses/upl.
+#
+# Description
+#  This sample script creates a Kubernetes secret for WebLogic domain admin credentials.
+#
+#  The following pre-requisites must be handled prior to running this script:
+#    * The kubernetes namespace must already be created
+#
+
+# Initialize
+script="${BASH_SOURCE[0]}"
+scriptDir="$( cd "$( dirname "${script}" )" && pwd )"
+# source ${scriptDir}/../common/utility.sh
+# source ${scriptDir}/../common/validate.sh
+
+#
+# Function to exit and print an error message
+# $1 - text of message
+function fail {
+  echo [ERROR] $*
+  exit 1
+}
+
+# try to execute kubectl to see whether kubectl is available
+function validateKubectlAvailable {
+  if ! [ -x "$(command -v kubectl)" ]; then
+    fail "kubectl is not installed"
+  fi
+}
+
+function usage {
+  echo usage: ${script} -u userName -p password [-d domainUID] [-n name] [-h]
+  echo "  -u username, must be specified."
+  echo "  -p password, must be specified."
+  echo "  -n namespace, optional."
+  echo "  -d domainUID, optional."
+  echo "  -h Help"
+  exit $1
+}
+
+#
+# Parse the command line options
+#
+domainUID=domain1
+namespace=default
+while getopts "hu:p:n:d:" opt; do
+  case $opt in
+    u) username="${OPTARG}"
+    ;;
+    p) password="${OPTARG}"
+    ;;
+    n) namespace="${OPTARG}"
+    ;;
+    d) domainUID="${OPTARG}"
+    ;;
+    h) usage 0
+    ;;
+    *) usage 1
+    ;;
+  esac
+done
+secretName=$domainUID-weblogic-credentials
+
+if [ -z ${username} ]; then
+  echo "${script}: -u must be specified."
+  missingRequiredOption="true"
+fi
+
+if [ -z ${password} ]; then
+  echo "${script}: -p must be specified."
+  missingRequiredOption="true"
+fi
+
+if [ "${missingRequiredOption}" == "true" ]; then
+  usage 1
+fi
+
+#
+# Function to validate the domain secret
+#
+function validateDomainSecret {
+  # Verify the secret exists
+  local SECRET=`kubectl get secret ${secretName} -n ${namespace} | grep ${secretName} | wc | awk ' { print $1; }'`
+  if [ "${SECRET}" != "1" ]; then
+    fail "The secret ${secretName} was not found in namespace ${namespace}"
+  fi
+
+  # Verify the secret contains a username
+  SECRET=`kubectl get secret ${secretName} -n ${namespace} -o jsonpath='{.data}'| grep username: | wc | awk ' { print $1; }'`
+  if [ "${SECRET}" != "1" ]; then
+    fail "The domain secret ${secretName} in namespace ${namespace} does contain a username"
+  fi
+
+  # Verify the secret contains a password
+  SECRET=`kubectl get secret ${secretName} -n ${namespace} -o jsonpath='{.data}'| grep password: | wc | awk ' { print $1; }'`
+  if [ "${SECRET}" != "1" ]; then
+    fail "The domain secret ${secretName} in namespace ${namespace} does contain a password"
+  fi
+  echo "The secret ${secretName} has been successfully created in namespace ${namespace}"
+}
+
+#
+# Perform the following sequence of steps to create a domain
+#
+
+result=`kubectl get secret ${secretName} -n ${namespace} --ignore-not-found=true | grep ${secretName} | wc | awk ' { print $1; }'`
+if [ "${result:=Error}" != "0" ]; then
+  fail "The secret ${secretName} already exists in namespace ${namespace}."
+fi
+
+kubectl -n $namespace create secret generic $secretName \
+  --from-literal=username=$username \
+  --from-literal=password=$password
+
+kubectl label secret ${secretName} -n $namespace weblogic.domainUID=$domainUID weblogic.domainName=$domainUID
+
+validateDomainSecret
+
+echo 
+echo Completed
+
+