Andy McCrae 8a9127efbc Prevent galera_cluster_name from changing.
On a running galera cluster, we don't want to unintentionally allow a
galera_cluster_name from changing. This will cause a cluster to fail to
start (if the nodes are restarted sequentially) as the cluter name value
has changed.

To ensure we can still change this value, a new
"galera_force_change_cluster_name" variable is added, which can be set
to "True" in order to change the cluster name.

Change-Id: I8bae038bd207a15d5731b9c91b78df851a4c1986
2016-09-13 17:32:53 +01:00

75 lines
2.2 KiB
Python

#!/usr/bin/env python
# Copyright 2015, Rackspace US, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import subprocess
# import module snippets
from ansible.module_utils.basic import *
DOCUMENTATION = """
---
module: mysql_status_facts
short_description:
- A module for gathering mysql status and global variable facts.
description:
- A module for gathering mysql status and global variable facts.
author: Rcbops
"""
EXAMPLES = """
- name: Gather mysql status facts
mysql_status_facts:
"""
class MysqlStatusFacts(object):
def __init__(self, module):
self.state_change = False
self.module = module
def gather_facts(self):
"""Get information about mysql status."""
try:
status = subprocess.check_output(["mysql", "-e", "show status"],
stderr=subprocess.STDOUT)
global_vars = subprocess.check_output(["mysql", "-e",
"show global variables"],
stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
message = 'Mysql fact collection failed: "%s".' % e.output.strip()
self.module.fail_json(msg=message)
else:
lines = status.split('\n')
lines += global_vars.split('\n')
facts = dict(l.split('\t') for l in lines if l)
self.module.exit_json(
changed=self.state_change,
ansible_facts={'mysql_status': facts})
def main():
module = AnsibleModule(
argument_spec=dict(
),
supports_check_mode=False
)
mysql_facts = MysqlStatusFacts(module)
mysql_facts.gather_facts()
if __name__ == '__main__':
main()