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.cluster.py
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.cluster.py
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from socket import gethostname
import os
defaults = {
'netmask': '255.255.255.0',
'public_key': '~/.ssh/id_rsa.pub',
'private_key': '~/.ssh/id_rsa',
'domain_name': 'local',
'extra_disks': {},
'openstack': {
'flavor': 'm1.small',
'image': 'CC-Ubuntu14.04',
'key_name': gethostname(),
'network': '{}-net'.format(os.getenv('OS_PROJECT_NAME')),
'create_floating_ip': True,
'floating_ip_pool': 'ext-net',
'security_groups': ['default'],
},
'vagrant': {
'provider': 'libvirt',
'box': 'ubuntu/14.04'
},
'provider': 'openstack',
}
zk = lambda i: {
'zk%d' % i: {}
}
master = lambda i: {
'master%d' % i: {}
# 'openstack': {'security_groups': ['default', 'hadoop-status']}
}
data = lambda i: {
'data%d' % i: {}
}
frontend = lambda i: {
'frontend%d' % i: {
# 'extra_disks': {'vdb': {'size': '10G'}},
# 'openstack': {'create_floating_ip': True},
}
}
loadbalancer = lambda i: {
'loadbalancer%d' % i: {
# 'openstack': {'flavor': 'm1.medium',
# 'security_groups': ['default', 'sshlb'],}
}
}
monitor = lambda i: {
'monitor%d' % i: {}
}
gluster = lambda i: {
'gluster%d' % i: {
'ip': '10.0.6.{}'.format(i+10),
'openstack': {'flavor': 'm1.large',}
}
}
from vcl.specification import expand, group, combine, chain
N_MASTER = 3
N_DATA = 3
machines = list(chain(
expand(master, N_MASTER),
# expand(data, N_DATA),
))
_zookeepernodes = [(master, [0,1,2])]
_namenodes = [(master, [0, 1])]
_journalnodes = [(master, [0,1,2])]
_historyservers = [(master, [2])]
_resourcemanagers = [(master, [0,1])]
_datanodes = [(master, xrange(N_DATA))]
_frontends = [(master, [0])]
_monitor = [(master, [2])]
zookeepers = group('zookeepernodes', _zookeepernodes)
namenodes = group('namenodes', _namenodes)
journalnodes = group('journalnodes', _journalnodes)
historyservers = group('historyservernodes', _historyservers)
resourcemanagers = group('resourcemanagernodes', _resourcemanagers)
datanodes = group('datanodes', _datanodes)
frontends = group('frontendnodes', _frontends)
hadoopnodes = combine('hadoopnodes', namenodes, datanodes,
journalnodes, historyservers, frontends)
monitor = group('monitornodes', _monitor)
inventory = [
zookeepers,
namenodes,
journalnodes,
historyservers,
resourcemanagers,
datanodes,
frontends,
hadoopnodes,
monitor,
]
spec = {
'defaults': defaults,
'machines': machines,
'inventory': inventory,
}
######################################################################
# hack to define zookeeper_id for zookeeper nodes automatically
host_vars = 'host_vars'
if not os.path.exists(host_vars):
os.makedirs(host_vars)
import time
zk_id = 0
for grp in zookeepers.itervalues():
for host in grp:
zk_id += 1
host_file = os.path.join(host_vars, host)
if os.path.exists(host_file):
print 'WARNING', host_file, 'already exists'
now = time.time()
bkp = host_file + '.' + str(now)
os.rename(host_file, bkp)
entry = 'zookeeper_id: {}\n'.format(zk_id)
print host_file, 'WROTE', entry
with open(host_file, 'w') as fd:
fd.write(entry)