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#!/usr/bin/python
# -*- coding: utf-8 -*-
# vim: expandtab:tabstop=4:shiftwidth=4
import os
import multiprocessing
import socket
from subprocess import check_output, Popen
DOCUMENTATION = '''
---
module: openshift_register_node
short_description: This module registers an openshift-node with an openshift-master
author: Jason DeTiberus
requirements: [ openshift-node ]
notes: Node resources can be specified using either the resources option or the following options: cpu, memory
options:
name:
description:
- id for this node (usually the node fqdn)
required: true
hostIP:
description:
- ip address for this node
required: false
cpu:
description:
- number of CPUs for this node
required: false
default: number of logical CPUs detected
memory:
description:
- Memory available for this node in bytes
required: false
default: 80% MemTotal
resources:
description:
- A json string representing Node resources
required: false
'''
EXAMPLES = '''
# Minimal node registration
- openshift_register_node: name=ose3.node.example.com
# Node registration with all options (using cpu and memory options)
- openshift_register_node:
name: ose3.node.example.com
hostIP: 192.168.1.1
apiVersion: v1beta1
cpu: 1
memory: 1073741824
# Node registration with all options (using resources option)
- openshift_register_node:
name: ose3.node.example.com
hostIP: 192.168.1.1
apiVersion: v1beta1
resources:
capacity:
cpu: 1
memory: 1073741824
'''
def main():
module = AnsibleModule(
argument_spec = dict(
name = dict(required = True),
hostIP = dict(),
apiVersion = dict(),
cpu = dict(),
memory = dict(),
resources = dict(),
client_config = dict(),
client_cluster = dict(default = 'master'),
client_context = dict(default = 'master'),
client_user = dict(default = 'admin')
),
mutually_exclusive = [
['resources', 'cpu'],
['resources', 'memory']
],
supports_check_mode=True
)
user_has_client_config = os.path.exists(os.path.expanduser('~/.kube/.kubeconfig'))
if not (user_has_client_config or module.params['client_config']):
module.fail_json(msg="Could not locate client configuration, "
"client_config must be specified if "
"~/.kube/.kubeconfig is not present")
client_opts = []
if module.params['client_config']:
client_opts.append("--kubeconfig=%s" % module.params['client_config'])
try:
output = check_output(["/usr/bin/openshift", "ex", "config", "view",
"-o", "json"] + client_opts,
stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
module.fail_json(msg="Failed to get client configuration",
command=e.cmd, returncode=e.returncode, output=e.output)
config = json.loads(output)
if not (bool(config['clusters']) or bool(config['contexts']) or
bool(config['current-context']) or bool(config['users'])):
module.fail_json(msg="Client config missing required values",
output=output)
client_context = module.params['client_context']
if client_context:
if client_context not in config['contexts']:
module.fail_json(msg="Context %s not found in client config" %
client_context)
if not config['current-context'] or config['current-context'] != client_context:
client_opts.append("--context=%s" % client_context)
client_user = module.params['client_user']
if client_user:
if client_user not in config['users']:
module.fail_json(msg="User %s not found in client config" %
client_user)
if client_user != config['contexts'][client_context]['user']:
client_opts.append("--user=%s" % client_user)
client_cluster = module.params['client_cluster']
if client_cluster:
if client_cluster not in config['clusters']:
module.fail_json(msg="Cluster %s not found in client config" %
client_cluster)
if client_cluster != config['contexts'][client_context]['cluster']:
client_opts.append("--cluster=%s" % client_cluster)
node_def = dict(
id = module.params['name'],
kind = 'Node',
apiVersion = 'v1beta1',
resources = dict(
capacity = dict()
)
)
for key, value in module.params.iteritems():
if key in ['cpu', 'memory']:
node_def['resources']['capacity'][key] = value
elif key == 'name':
node_def['id'] = value
elif key != 'client_config':
if value:
node_def[key] = value
if not node_def['resources']['capacity']['cpu']:
node_def['resources']['capacity']['cpu'] = multiprocessing.cpu_count()
if not node_def['resources']['capacity']['memory']:
with open('/proc/meminfo', 'r') as mem:
for line in mem:
entries = line.split()
if str(entries.pop(0)) == 'MemTotal:':
mem_total_kb = int(entries.pop(0))
mem_capacity = int(mem_total_kb * 1024 * .75)
node_def['resources']['capacity']['memory'] = mem_capacity
break
try:
output = check_output(["/usr/bin/osc", "get", "nodes"] + client_opts,
stderr=subprocess.STDOUT)
except subprocess.CalledProcessError as e:
module.fail_json(msg="Failed to get node list", command=e.cmd,
returncode=e.returncode, output=e.output)
if re.search(module.params['name'], output, re.MULTILINE):
module.exit_json(changed=False, node_def=node_def)
elif module.check_mode:
module.exit_json(changed=True, node_def=node_def)
config_def = dict(
metadata = dict(
name = "add-node-%s" % module.params['name']
),
kind = 'Config',
apiVersion = 'v1beta1',
items = [node_def]
)
p = Popen(["/usr/bin/osc"] + client_opts + ["create", "node"] + ["-f", "-"],
stdin=subprocess.PIPE, stdout=subprocess.PIPE,
stderr=subprocess.PIPE, close_fds=True)
(out, err) = p.communicate(module.jsonify(config_def))
ret = p.returncode
if ret != 0:
if re.search("minion \"%s\" already exists" % module.params['name'],
err):
module.exit_json(changed=False,
msg="node definition already exists", config_def=config_def)
else:
module.fail_json(msg="Node creation failed.", ret=ret, out=out,
err=err, config_def=config_def)
module.exit_json(changed=True, out=out, err=err, ret=ret,
node_def=config_def)
# import module snippets
from ansible.module_utils.basic import *
main()
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