diff options
Diffstat (limited to 'bin/cluster')
| -rwxr-xr-x | bin/cluster | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/bin/cluster b/bin/cluster new file mode 100755 index 000000000..ca227721e --- /dev/null +++ b/bin/cluster @@ -0,0 +1,190 @@ +#!/usr/bin/env python2 +# vim: expandtab:tabstop=4:shiftwidth=4 + +import argparse +import ConfigParser +import sys +import os + + +class Cluster(object): + """ + Control and Configuration Interface for OpenShift Clusters + """ + def __init__(self): + # setup ansible ssh environment + if 'ANSIBLE_SSH_ARGS' not in os.environ: + os.environ['ANSIBLE_SSH_ARGS'] = ( + '-o ForwardAgent=yes ' + '-o StrictHostKeyChecking=no ' + '-o UserKnownHostsFile=/dev/null ' + '-o ControlMaster=auto ' + '-o ControlPersist=600s ' + ) + + def create(self, args): + """ + Create an OpenShift cluster for given provider + :param args: command line arguments provided by user + :return: exit status from run command + """ + env = {'cluster_id': args.cluster_id} + playbook = "playbooks/{}/openshift-cluster/launch.yml".format(args.provider) + inventory = self.setup_provider(args.provider) + + env['num_masters'] = args.masters + env['num_nodes'] = args.nodes + + return self.action(args, inventory, env, playbook) + + def terminate(self, args): + """ + Destroy OpenShift cluster + :param args: command line arguments provided by user + :return: exit status from run command + """ + env = {'cluster_id': args.cluster_id} + playbook = "playbooks/{}/openshift-cluster/terminate.yml".format(args.provider) + inventory = self.setup_provider(args.provider) + + return self.action(args, inventory, env, playbook) + + def list(self, args): + """ + List VMs in cluster + :param args: command line arguments provided by user + :return: exit status from run command + """ + env = {'cluster_id': args.cluster_id} + playbook = "playbooks/{}/openshift-cluster/list.yml".format(args.provider) + inventory = self.setup_provider(args.provider) + + return self.action(args, inventory, env, playbook) + + def update(self, args): + """ + Update to latest OpenShift across clustered VMs + :param args: command line arguments provided by user + :return: exit status from run command + """ + env = {'cluster_id': args.cluster_id} + playbook = "playbooks/{}/openshift-cluster/update.yml".format(args.provider) + inventory = self.setup_provider(args.provider) + + return self.action(args, inventory, env, playbook) + + def setup_provider(self, provider): + """ + Setup ansible playbook environment + :param provider: command line arguments provided by user + :return: path to inventory for given provider + """ + config = ConfigParser.ConfigParser() + if 'gce' == provider: + config.readfp(open('inventory/gce/gce.ini')) + + for key in config.options('gce'): + os.environ[key] = config.get('gce', key) + + inventory = '-i inventory/gce/gce.py' + elif 'aws' == provider: + config.readfp(open('inventory/aws/ec2.ini')) + + for key in config.options('ec2'): + os.environ[key] = config.get('ec2', key) + + inventory = '-i inventory/aws/ec2.py' + elif 'libvirt' == provider: + inventory = '-i inventory/libvirt/hosts' + else: + # this code should never be reached + raise ValueError("invalid PROVIDER {}".format(provider)) + + return inventory + + def action(self, args, inventory, env, playbook): + """ + Build ansible-playbook command line and execute + :param args: command line arguments provided by user + :param inventory: derived provider library + :param env: environment variables for kubernetes + :param playbook: ansible playbook to execute + :return: exit status from ansible-playbook command + """ + + verbose = '' + if args.verbose > 0: + verbose = '-{}'.format('v' * args.verbose) + + ansible_env = '-e \'{}\''.format( + ' '.join(['%s=%s' % (key, value) for (key, value) in env.items()]) + ) + + command = 'ansible-playbook {} {} {} {}'.format( + verbose, inventory, ansible_env, playbook + ) + + if args.verbose > 1: + command = 'time {}'.format(command) + + if args.verbose > 0: + sys.stderr.write('RUN [{}]\n'.format(command)) + sys.stderr.flush() + + return os.system(command) + + +if __name__ == '__main__': + """ + Implemented to support writing unit tests + """ + + cluster = Cluster() + + providers = ['gce', 'aws', 'libvirt'] + parser = argparse.ArgumentParser( + description='Python wrapper to ensure proper environment for OpenShift ansible playbooks', + ) + parser.add_argument('-v', '--verbose', action='count', help='Multiple -v options increase the verbosity') + parser.add_argument('--version', action='version', version='%(prog)s 0.2') + + meta_parser = argparse.ArgumentParser(add_help=False) + meta_parser.add_argument('provider', choices=providers, help='provider') + meta_parser.add_argument('cluster_id', help='prefix for cluster VM names') + + action_parser = parser.add_subparsers(dest='action', title='actions', description='Choose from valid actions') + + create_parser = action_parser.add_parser('create', help='Create a cluster', parents=[meta_parser]) + create_parser.add_argument('-m', '--masters', default=1, type=int, help='number of masters to create in cluster') + create_parser.add_argument('-n', '--nodes', default=2, type=int, help='number of nodes to create in cluster') + create_parser.set_defaults(func=cluster.create) + + terminate_parser = action_parser.add_parser('terminate', help='Destroy a cluster', parents=[meta_parser]) + terminate_parser.add_argument('-f', '--force', action='store_true', help='Destroy cluster without confirmation') + terminate_parser.set_defaults(func=cluster.terminate) + + update_parser = action_parser.add_parser('update', help='Update OpenShift across cluster', parents=[meta_parser]) + update_parser.add_argument('-f', '--force', action='store_true', help='Update cluster without confirmation') + update_parser.set_defaults(func=cluster.update) + + list_parser = action_parser.add_parser('list', help='List VMs in cluster', parents=[meta_parser]) + list_parser.set_defaults(func=cluster.list) + + args = parser.parse_args() + + if 'terminate' == args.action and not args.force: + answer = raw_input("This will destroy the ENTIRE {} environment. Are you sure? [y/N] ".format(args.cluster_id)) + if answer not in ['y', 'Y']: + sys.stderr.write('\nACTION [terminate] aborted by user!\n') + exit(1) + + if 'update' == args.action and not args.force: + answer = raw_input("This is destructive and could corrupt {} environment. Continue? [y/N] ".format(args.cluster_id)) + if answer not in ['y', 'Y']: + sys.stderr.write('\nACTION [update] aborted by user!\n') + exit(1) + + status = args.func(args) + if status != 0: + sys.stderr.write("ACTION [{}] failed with exit status {}\n".format(args.action, status)) + exit(status) |