{
  "kind": "Template",
  "apiVersion": "v1",
  "metadata": {
    "name": "mysql-replication-example",
    "annotations": {
      "description": "MySQL Replication Example",
      "iconClass": "icon-database",
      "tags": "database,mysql,replication"
    }
  },
  "parameters": [
    {
      "name": "MYSQL_MASTER_SERVICE_NAME",
      "description": "Service name for MySQL master service",
      "value": "mysql-master"
    },
    {
      "name": "MYSQL_MASTER_USER",
      "description": "The username used for master-slave replication",
      "value": "master"
    },
    {
      "name": "MYSQL_MASTER_PASSWORD",
      "description": "The password used for the MYSQL_MASTER_USER",
      "generate": "expression",
      "from": "[a-zA-Z0-9]{12}"
    },
    {
      "name": "MYSQL_USER",
      "description": "The username that clients will use to connect to the server",
      "value": "user"
    },
    {
      "name": "MYSQL_PASSWORD",
      "description": "The password for the MYSQL_USER",
      "generate": "expression",
      "from": "[a-zA-Z0-9]{12}"
    },
    {
      "name": "MYSQL_DATABASE",
      "description": "The name of the database that will be created and replicated",
      "value": "userdb"
    },
    {
      "name": "MYSQL_ROOT_PASSWORD",
      "description": "The password for the root user",
      "generate": "expression",
      "from": "[a-zA-Z0-9]{12}"
    },
    {
      "name": "VOLUME_CAPACITY",
      "displayName": "Volume Capacity",
      "description": "Volume space available for data, e.g. 512Mi, 2Gi.",
      "value": "1Gi",
      "required": true
    }
  ],
  "objects": [
    {
      "kind": "PersistentVolumeClaim",
      "apiVersion": "v1",
      "metadata": {
        "name": "mysql-master"
      },
      "spec": {
        "accessModes": [
          "ReadWriteOnce"
        ],
        "resources": {
          "requests": {
            "storage": "${VOLUME_CAPACITY}"
          }
        }
      }
    },
    {
      "kind": "PersistentVolumeClaim",
      "apiVersion": "v1",
      "metadata": {
        "name": "mysql-slave"
      },
      "spec": {
        "accessModes": [
          "ReadWriteOnce"
        ],
        "resources": {
          "requests": {
            "storage": "${VOLUME_CAPACITY}"
          }
        }
      }
    },
    {
      "kind": "Service",
      "apiVersion": "v1",
      "metadata": {
        "name": "${MYSQL_MASTER_SERVICE_NAME}",
        "labels": {
          "name": "mysql-master"
        }
      },
      "spec": {
        "ports": [
          {
            "port": 3306
          }
        ],
        "selector": {
          "name": "mysql-master"
        },
        "clusterIP": "None"
      }
    },
    {
      "kind": "Service",
      "apiVersion": "v1",
      "metadata": {
        "name": "mysql-slave",
        "labels": {
          "name": "mysql-slave"
        }
      },
      "spec": {
        "ports": [
          {
            "port": 3306
          }
        ],
        "selector": {
          "name": "mysql-slave"
        },
        "clusterIP": "None"
      }
    },
    {
      "kind": "DeploymentConfig",
      "apiVersion": "v1",
      "metadata": {
        "name": "mysql-master"
      },
      "spec": {
        "strategy": {
          "type": "Recreate"
        },
        "triggers": [
          {
            "type": "ConfigChange"
          }
        ],
        "replicas": 1,
        "selector": {
          "name": "mysql-master"
        },
        "template": {
          "metadata": {
            "labels": {
              "name": "mysql-master"
            }
          },
          "spec": {
            "volumes": [
              {
                "name": "mysql-master-data",
                "persistentVolumeClaim": {
                  "claimName": "mysql-master"
                }
              }
            ],
            "containers": [
              {
                "name": "server",
                "image": "centos/mysql-57-centos7",
                "args": [
                  "run-mysqld-master"
                ],
                "ports": [
                  {
                    "containerPort": 3306
                  }
                ],
                "env": [
                  {
                    "name": "MYSQL_MASTER_USER",
                    "value": "${MYSQL_MASTER_USER}"
                  },
                  {
                    "name": "MYSQL_MASTER_PASSWORD",
                    "value": "${MYSQL_MASTER_PASSWORD}"
                  },
                  {
                    "name": "MYSQL_USER",
                    "value": "${MYSQL_USER}"
                  },
                  {
                    "name": "MYSQL_PASSWORD",
                    "value": "${MYSQL_PASSWORD}"
                  },
                  {
                    "name": "MYSQL_DATABASE",
                    "value": "${MYSQL_DATABASE}"
                  },
                  {
                    "name": "MYSQL_ROOT_PASSWORD",
                    "value": "${MYSQL_ROOT_PASSWORD}"
                  }
                ],
                "volumeMounts": [
                  {
                    "name": "mysql-master-data",
                    "mountPath": "/var/lib/mysql/data"
                  }
                ],
                "imagePullPolicy": "IfNotPresent"
              }
            ]
          }
        }
      }
    },
    {
      "kind": "DeploymentConfig",
      "apiVersion": "v1",
      "metadata": {
        "name": "mysql-slave"
      },
      "spec": {
        "strategy": {
          "type": "Recreate"
        },
        "triggers": [
          {
            "type": "ConfigChange"
          }
        ],
        "replicas": 1,
        "selector": {
          "name": "mysql-slave"
        },
        "template": {
          "metadata": {
            "labels": {
              "name": "mysql-slave"
            }
          },
          "spec": {
            "volumes": [
              {
                "name": "mysql-slave-data",
                "persistentVolumeClaim": {
                  "claimName": "mysql-slave"
                }
              }
            ],
            "containers": [
              {
                "name": "server",
                "image": "centos/mysql-57-centos7",
                "args": [
                  "run-mysqld-slave"
                ],
                "ports": [
                  {
                    "containerPort": 3306
                  }
                ],
                "env": [
                  {
                    "name": "MYSQL_MASTER_SERVICE_NAME",
                    "value": "${MYSQL_MASTER_SERVICE_NAME}"
                  },
                  {
                    "name": "MYSQL_MASTER_USER",
                    "value": "${MYSQL_MASTER_USER}"
                  },
                  {
                    "name": "MYSQL_MASTER_PASSWORD",
                    "value": "${MYSQL_MASTER_PASSWORD}"
                  },
                  {
                    "name": "MYSQL_DATABASE",
                    "value": "${MYSQL_DATABASE}"
                  }
                ],
                "volumeMounts": [
                  {
                    "name": "mysql-slave-data",
                    "mountPath": "/var/lib/mysql/data"
                  }
                ],
                "imagePullPolicy": "IfNotPresent"
              }
            ]
          }
        }
      }
    }
  ]
}