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rabbitmq.py
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rabbitmq.py
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import uuid
import re
import time
from fabfile.config import *
from fabfile.templates import rabbitmq_config, rabbitmq_config_single_node,\
rabbitmq_env_conf
from fabfile.utils.fabos import detect_ostype
from fabfile.tasks.helpers import disable_iptables
from fabfile.utils.host import get_from_testbed_dict, get_control_host_string,\
hstr_to_ip, get_openstack_internal_vip, get_contrail_internal_vip,\
get_env_passwords
global ctrl
ctrl = "-ctrl"
def verfiy_and_update_hosts(host_name, host_string):
# Need to have the alias created to map to the hostname
# this is required for erlang node to cluster using
# the same interface that is used for rabbitMQ TCP listener
with settings(hide('stderr'), warn_only=True):
if sudo('grep %s /etc/hosts' % (host_name+ctrl)).failed:
sudo("echo '%s %s %s' >> /etc/hosts" % (hstr_to_ip(get_control_host_string(host_string)), host_name, host_name+ctrl))
@task
@EXECUTE_TASK
@roles('rabbit')
def set_tcp_keepalive():
with settings(hide('stderr'), warn_only=True):
if sudo("grep '^net.ipv4.tcp_keepalive_time' /etc/sysctl.conf").failed:
sudo("echo 'net.ipv4.tcp_keepalive_time = 5' >> /etc/sysctl.conf")
else:
sudo("sed -i 's/net.ipv4.tcp_keepalive_time\s*=\s*[0-9]*/net.ipv4.tcp_keepalive_time = 5/' /etc/sysctl.conf")
if sudo("grep '^net.ipv4.tcp_keepalive_probes' /etc/sysctl.conf").failed:
sudo("echo 'net.ipv4.tcp_keepalive_probes = 5' >> /etc/sysctl.conf")
else:
sudo("sed -i 's/net.ipv4.tcp_keepalive_probes\s*=\s*[0-9]*/net.ipv4.tcp_keepalive_probes = 5/' /etc/sysctl.conf")
if sudo("grep '^net.ipv4.tcp_keepalive_intvl' /etc/sysctl.conf").failed:
sudo("echo 'net.ipv4.tcp_keepalive_intvl = 1' >> /etc/sysctl.conf")
else:
sudo("sed -i 's/net.ipv4.tcp_keepalive_intvl\s*=\s*[0-9]*/net.ipv4.tcp_keepalive_intvl = 1/' /etc/sysctl.conf")
@task
@EXECUTE_TASK
@roles('compute')
def set_tcp_keepalive_on_compute():
with settings(hide('stderr'), warn_only=True):
if sudo("grep '^net.ipv4.tcp_keepalive_time' /etc/sysctl.conf").failed:
sudo("echo 'net.ipv4.tcp_keepalive_time = 10' >> /etc/sysctl.conf")
else:
sudo("sed -i 's/net.ipv4.tcp_keepalive_time\s*=\s*[0-9]*/net.ipv4.tcp_keepalive_time = 5/' /etc/sysctl.conf")
if sudo("grep '^net.ipv4.tcp_keepalive_probes' /etc/sysctl.conf").failed:
sudo("echo 'net.ipv4.tcp_keepalive_probes = 5' >> /etc/sysctl.conf")
else:
sudo("sed -i 's/net.ipv4.tcp_keepalive_probes\s*=\s*[0-9]*/net.ipv4.tcp_keepalive_probes = 5/' /etc/sysctl.conf")
if sudo("grep '^net.ipv4.tcp_keepalive_intvl' /etc/sysctl.conf").failed:
sudo("echo 'net.ipv4.tcp_keepalive_intvl = 1' >> /etc/sysctl.conf")
else:
sudo("sed -i 's/net.ipv4.tcp_keepalive_intvl\s*=\s*[0-9]*/net.ipv4.tcp_keepalive_intvl = 1/' /etc/sysctl.conf")
@task
@EXECUTE_TASK
@roles('rabbit')
def listen_at_supervisor_support_port():
execute('listen_at_supervisor_support_port_node', env.host_string)
@task
def listen_at_supervisor_support_port_node(*args):
for host_string in args:
with settings(host_string=host_string, warn_only=True):
if sudo("service supervisor-support-service status | grep running").failed:
sudo("service supervisor-support-service start")
sudo("supervisorctl -s unix:///tmp/supervisord_support_service.sock stop all")
@task
@EXECUTE_TASK
@roles('rabbit')
def remove_mnesia_database():
execute('remove_mnesia_database_node', env.host_string)
@task
def remove_mnesia_database_node(*args):
for host_string in args:
with settings(host_string=host_string, warn_only=True):
sudo("service rabbitmq-server stop")
if 'Killed' not in sudo("epmd -kill"):
sudo("pkill -9 beam")
sudo("pkill -9 epmd")
if 'beam' in sudo("netstat -anp | grep beam"):
sudo("pkill -9 beam")
sudo("rm -rf /var/lib/rabbitmq/mnesia")
@task
@parallel
@roles('rabbit')
def set_guest_user_permissions():
with settings(warn_only=True):
sudo('rabbitmqctl set_permissions guest ".*" ".*" ".*"')
@task
@serial
@roles('rabbit')
def rabbitmq_env():
erl_node_name = None
rabbit_env_conf = '/etc/rabbitmq/rabbitmq-env.conf'
with settings(host_string=env.host_string, password=get_env_passwords(env.host_string)):
host_name = sudo('hostname -s') + ctrl
erl_node_name = "rabbit@%s" % (host_name)
rabbitmq_env_template = rabbitmq_env_conf
rmq_env_conf = rabbitmq_env_template.template.safe_substitute({
'__erl_node_ip__' : hstr_to_ip(get_control_host_string(env.host_string)),
'__erl_node_name__' : erl_node_name,
})
tmp_fname = "/tmp/rabbitmq-env-%s.conf" % env.host_string
cfg_file = open(tmp_fname, 'w')
cfg_file.write(rmq_env_conf)
cfg_file.close()
put(tmp_fname, rabbit_env_conf, use_sudo=True)
local("rm %s" %(tmp_fname))
@task
@serial
@roles('rabbit')
def config_rabbitmq():
rabbit_hosts = []
rabbit_conf = '/etc/rabbitmq/rabbitmq.config'
if len(env.roledefs['rabbit']) <= 1 and detect_ostype() == 'redhat':
print "CONFIG_RABBITMQ: Skip creating rabbitmq.config for Single node setup"
return
for host_string in env.roledefs['rabbit']:
with settings(host_string=host_string, password=get_env_passwords(host_string)):
host_name = sudo('hostname -s') + ctrl
rabbit_hosts.append("\'rabbit@%s\'" % host_name)
rabbit_hosts = ', '.join(rabbit_hosts)
rabbitmq_config_template = rabbitmq_config
if len(env.roledefs['rabbit']) == 1:
rabbitmq_config_template = rabbitmq_config_single_node
rabbitmq_configs = rabbitmq_config_template.template.safe_substitute({
'__control_intf_ip__' : hstr_to_ip(get_control_host_string(env.host_string)),
'__rabbit_hosts__' : rabbit_hosts,
})
tmp_fname = "/tmp/rabbitmq_%s.config" % env.host_string
cfg_file = open(tmp_fname, 'w')
cfg_file.write(rabbitmq_configs)
cfg_file.close()
put(tmp_fname, "/etc/rabbitmq/rabbitmq.config", use_sudo=True)
local("rm %s" %(tmp_fname))
@task
@parallel
@roles('rabbit')
def allow_rabbitmq_port():
execute('allow_rabbitmq_port_node', env.host_string)
@task
def allow_rabbitmq_port_node(*args):
for host_string in args:
with settings(host_string=host_string, warn_only=True):
execute('disable_iptables')
@task
@parallel
@roles('rabbit')
def stop_rabbitmq_and_set_cookie(uuid):
execute('stop_rabbitmq_and_set_cookie_node', uuid, env.host_string)
@task
def stop_rabbitmq_and_set_cookie_node(uuid, *args):
for host_string in args:
with settings(host_string=host_string, warn_only=True):
sudo("service rabbitmq-server stop")
if 'Killed' not in sudo("epmd -kill"):
sudo("pkill -9 beam")
sudo("pkill -9 epmd")
if 'beam' in sudo("netstat -anp | grep beam"):
sudo("pkill -9 beam")
sudo("rm -rf /var/lib/rabbitmq/mnesia/")
sudo("echo '%s' > /var/lib/rabbitmq/.erlang.cookie" % uuid)
sudo("chmod 400 /var/lib/rabbitmq/.erlang.cookie")
sudo("chown rabbitmq:rabbitmq /var/lib/rabbitmq/.erlang.cookie")
@task
@serial
@roles('rabbit')
def start_rabbitmq():
execute('start_rabbitmq_node', env.host_string)
@task
def start_rabbitmq_node(*args):
for host_string in args:
with settings(host_string=host_string, warn_only=True):
sudo("service rabbitmq-server restart")
@task
@parallel
@roles('rabbit')
def rabbitmqctl_stop_app():
sudo("rabbitmqctl stop_app")
@task
@parallel
@roles('rabbit')
def rabbitmqctl_reset():
sudo("rabbitmqctl force_reset")
@task
@parallel
@hosts(*env.roledefs['rabbit'][1:])
def rabbitmqctl_start_app():
execute("rabbitmqctl_start_app_node", env.host_string)
@task
def rabbitmqctl_start_app_node(*args):
for host_string in args:
with settings(host_string=host_string):
sudo("rabbitmqctl start_app")
@task
@roles('rabbit')
def verify_rabbit_node_hostname():
for host_string in env.roledefs['rabbit']:
with settings(host_string=host_string):
host_name = sudo('hostname -s')
verfiy_and_update_hosts(host_name, host_string)
@task
@hosts(*env.roledefs['rabbit'][1:])
def add_node_to_rabbitmq_cluster():
with settings(host_string=env.roledefs['rabbit'][0]):
rabbit_node1 = sudo('hostname')
this_rabbit_node = sudo('hostname')
sudo("rabbitmqctl join_cluster rabbit@%s" % rabbit_node1)
@task
@roles('rabbit')
def verify_cluster_status(retry='yes'):
# Retry a few times, as rabbit-mq can fail intermittently when trying to
# connect to AMQP server. Total wait time here is atmost a minute.
rabbitmq_up = False
for i in range(0, 6):
with settings(warn_only=True):
status = sudo("service rabbitmq-server status")
if 'running' in status.lower():
rabbitmq_up = True
break
elif retry == 'no':
return False
time.sleep(10)
if not rabbitmq_up:
return False
rabbitmq_up = False
for i in range(0, 6):
with settings(warn_only=True):
output = sudo("rabbitmqctl cluster_status")
running_nodes = re.compile(r"running_nodes,\[([^\]]*)")
match = running_nodes.search(output)
if match:
rabbitmq_up = True
break
elif retry == 'no':
return False
time.sleep(10)
if not rabbitmq_up:
return False
clustered_nodes = match.group(1).split(',')
clustered_nodes = [node.strip(' \n\r\'') for node in clustered_nodes]
rabbit_nodes = []
for host_string in env.roledefs['rabbit']:
with settings(host_string=host_string):
if len(env.roledefs['rabbit']) <= 1 and detect_ostype() == 'redhat':
print "Skip verifying /etc/rabbitmq/rabbitmq.config for Single node setup"
elif not files.exists("/etc/rabbitmq/rabbitmq.config"):
return False
host_name = sudo('hostname -s') + ctrl
rabbit_nodes.append('rabbit@%s' % host_name)
for rabbit_node in rabbit_nodes:
if rabbit_node not in clustered_nodes:
print "RabbitMQ cluster doesnt list %s in running_nodes" % env.host_string
return False
return True
@task
@roles('rabbit')
@task
def set_ha_policy_in_rabbitmq():
sudo("rabbitmqctl set_policy HA-all \"\" '{\"ha-mode\":\"all\",\"ha-sync-mode\":\"automatic\"}'")
@task
@roles('build')
def join_rabbitmq_cluster(new_ctrl_host):
""" Task to join a new rabbit server into an existing cluster """
# Provision rabbitmq cluster in cfgm role nodes.
amqp_roles = ['cfgm']
if get_from_testbed_dict('openstack', 'manage_amqp', 'no') == 'yes':
#Provision rabbitmq cluster in openstack role nodes aswell.
amqp_roles.append('openstack')
for role in amqp_roles:
env.roledefs['rabbit'] = env.roledefs[role]
# copy the erlang cookie from one of the other nodes.
rabbitmq_cluster_uuid = None
for host_string in env.roledefs['rabbit']:
with settings(host_string=host_string, warn_only=True):
if host_string != new_ctrl_host and\
sudo('ls /var/lib/rabbitmq/.erlang.cookie').succeeded:
rabbitmq_cluster_uuid = \
sudo('cat /var/lib/rabbitmq/.erlang.cookie')
break;
if rabbitmq_cluster_uuid is None:
raise RuntimeError("Not able to get the Erlang cookie from the cluster nodes")
execute(listen_at_supervisor_support_port_node, new_ctrl_host)
execute(remove_mnesia_database_node, new_ctrl_host)
execute(verify_rabbit_node_hostname)
execute(allow_rabbitmq_port_node, new_ctrl_host)
execute(rabbitmq_env)
execute(config_rabbitmq)
execute('stop_rabbitmq_and_set_cookie_node', rabbitmq_cluster_uuid, new_ctrl_host)
execute('start_rabbitmq_node', new_ctrl_host)
# adding sleep to workaround rabbitmq bug 26370 prevent
# "rabbitmqctl cluster_status" from breaking the database,
# this is seen in ci
time.sleep(30)
if (role is 'openstack' and get_openstack_internal_vip() or
role is 'cfgm' and get_contrail_internal_vip()):
execute('set_ha_policy_in_rabbitmq')
execute('set_tcp_keepalive')
result = execute(verify_cluster_status)
if False in result.values():
print "Unable to setup RabbitMQ cluster in role[%s]...." % role
exit(1)
@task
@roles('build')
def setup_rabbitmq_cluster(force=False):
"""Task to cluster the rabbit servers."""
amqp_roles = []
rabbit_servers = get_from_testbed_dict('cfgm', 'amqp_hosts', None)
if rabbit_servers:
print "Using external rabbitmq servers %s" % rabbit_servers
else:
# Provision rabbitmq cluster in cfgm role nodes.
print "Provisioning rabbitq in cfgm nodes"
amqp_roles = ['cfgm']
# Provision rabbitmq cluster in openstack on request
if get_from_testbed_dict('openstack', 'manage_amqp', 'no') == 'yes':
# Provision rabbitmq cluster in openstack role nodes aswell.
amqp_roles.append('openstack')
for role in amqp_roles:
env.roledefs['rabbit'] = env.roledefs[role]
if not force:
with settings(warn_only=True):
result = execute("verify_cluster_status", retry='no')
if result and False not in result.values():
print "RabbitMQ cluster is up and running in role[%s]; No need to cluster again." % role
continue
rabbitmq_cluster_uuid = getattr(testbed, 'rabbitmq_cluster_uuid', None)
if not rabbitmq_cluster_uuid:
rabbitmq_cluster_uuid = uuid.uuid4()
execute(listen_at_supervisor_support_port)
execute(remove_mnesia_database)
execute(verify_rabbit_node_hostname)
execute(allow_rabbitmq_port)
execute(rabbitmq_env)
execute(config_rabbitmq)
execute("stop_rabbitmq_and_set_cookie", rabbitmq_cluster_uuid)
execute(start_rabbitmq)
# adding sleep to workaround rabbitmq bug 26370 prevent
# "rabbitmqctl cluster_status" from breaking the database,
# this is seen in ci
time.sleep(60)
#execute(rabbitmqctl_stop_app)
#execute(rabbitmqctl_reset)
#execute("rabbitmqctl_start_app_node", env.roledefs['rabbit'][0])
#execute(add_node_to_rabbitmq_cluster)
#execute(rabbitmqctl_start_app)
if (role is 'openstack' and get_openstack_internal_vip() or
role is 'cfgm' and get_contrail_internal_vip()):
execute('set_ha_policy_in_rabbitmq')
execute('set_tcp_keepalive')
execute('set_tcp_keepalive_on_compute')
result = execute(verify_cluster_status)
if False in result.values():
print "Unable to setup RabbitMQ cluster in role[%s]...." % role
exit(1)