def stop():
"""Stops Mongodb"""
mongo_nodes = addresses()['db_public_ip']
config_server = addresses()['man_public_ip']
execute(stop_mongod, hosts=mongo_nodes)
execute(stop_mongos, hosts=mongo_nodes)
execute(stop_config_server, hosts=config_server)
def start():
"""Runs MongoDB"""
mongo_nodes = addresses()['db_public_ip']
config_server = addresses()['man_public_ip']
print 'stopping mongo first...'
stop()
print 'Installing & Starting Mongod/Mongos on hosts: %s' % mongo_nodes
print 'Installing & Starting Config Server on hosts: %s' % config_server
print emphasis('changing configuration')
execute(change_mongod_conf, hosts=mongo_nodes)
print emphasis('starting config server')
execute(start_mongo_config_server, hosts=config_server)
print emphasis('starting mongod')
execute(start_mongod, hosts=mongo_nodes)
print emphasis('starting mongos')
execute(start_mongos, hosts=mongo_nodes)
print emphasis('configuring sharding')
execute(configure_sharding, hosts=mongo_nodes[0])
print '********Mongo is running********'
def make_substitutions(base, yaml):
seed = addresses()['db_private_ip'][0]
index = addresses()['db_public_ip'].index(env.host_string)
host_internal_ip = addresses()['db_private_ip'][index]
_commit_log_dir, _data_dir = prepare_directories()
with open(yaml, "wt") as fout:
with open(base, "rt") as fin:
for line in fin:
line = line.replace('seeds: "127.0.0.1"', 'seeds: "%s"' % seed)
line = line.replace('listen_address: localhost',
'listen_address: %s' % host_internal_ip)
line = line.replace(
'# broadcast_rpc_address: 1.2.3.4',
'broadcast_rpc_address: %s' % host_internal_ip)
if use_instance_store:
line = line.replace(
'commitlog_directory: /var/lib/cassandra/commitlog',
'commitlog_directory: %s' % _commit_log_dir)
line = line.replace(' - /var/lib/cassandra/data',
' - /%s' % _data_dir)
fout.write(line)
fout.write("\nauto_bootstrap: false")
def install():
print 'Installing Cassandra on hosts: %s' % addresses()['db_public_ip']
execute( # install in parallel
_install, hosts=addresses()['db_public_ip'])
execute(_configure, hosts=addresses()['db_public_ip'])
print '********Cassandra is installed********'
def start_mongos():
config_server = addresses()['man_public_ip'][0]
sudo("killall -q mongos", warn_only=True)
sudo(
'echo "mongos --configdb %s:27027 --port 27028 >/var/log/mongodb/mongos.log 2>/var/log/mongodb/mongos-err.log" | at now'
% config_server)
wait_for_connection('localhost:27028')
print 'succeeded in connecting to mongos'
def configure_sharding():
mongods = addresses()['db_private_ip']
url = 'localhost:27028/ycsb'
for mongod in mongods:
run_mongo_shell(url,
'sh.addShard(\'%s:27017\')' % mongod,
acceptable_error='host already used')
run_mongo_shell(url,
'sh.enableSharding(\'ycsb\')',
acceptable_error='already enabled')
run_mongo_shell(
url,
'sh.shardCollection(\'ycsb.usertable\', { \'_id\': \'hashed\' })',
acceptable_error='already sharded')
run_mongo_shell(url, 'db.usertable.remove({})', check_return_code=False)
def install():
execute(install_mongodb,
hosts=addresses()['db_public_ip'] + addresses()['man_public_ip'])