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[Bug 1302283] [NEW] LBaaS Haproxy occurs error if no member is added

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: berlin <linb@xxxxxxxxxx>
Date: Fri, 04 Apr 2014 01:43:51 -0000
Reply-to: Bug 1302283 <1302283@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

if VIP&Pool without one member added, the Haproxy agent would report
config file error like the following:

2014-04-02 10:14:10.632 17283 DEBUG neutron.openstack.common.lockutils [req-18b873c4-abd7-4483-824f-f553c29ae549 None] Semaphore / lock released "deploy_instance" inner /opt/stack/neutron/neutron/openstack/common/lockutils.py:252
2014-04-02 10:14:10.633 17283 ERROR neutron.services.loadbalancer.agent.agent_manager [req-18b873c4-abd7-4483-824f-f553c29ae549 None] Unable to deploy instance for pool: a61dd6b6-8dbe-4576-b213-f8632892a58c
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager Traceback (most recent call last):
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager   File "/opt/stack/neutron/neutron/services/loadbalancer/agent/agent_manager.py", line 180, in _reload_pool
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager     self.device_drivers[driver_name].deploy_instance(logical_config)
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager   File "/opt/stack/neutron/neutron/openstack/common/lockutils.py", line 249, in inner
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager     return f(*args, **kwargs)
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager   File "/opt/stack/neutron/neutron/services/loadbalancer/drivers/haproxy/namespace_driver.py", line 280, in deploy_instance
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager     self.update(logical_config)
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager   File "/opt/stack/neutron/neutron/services/loadbalancer/drivers/haproxy/namespace_driver.py", line 95, in update
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager     self._spawn(logical_config, extra_args)
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager   File "/opt/stack/neutron/neutron/services/loadbalancer/drivers/haproxy/namespace_driver.py", line 110, in _spawn
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager     ns.netns.execute(cmd)
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager   File "/opt/stack/neutron/neutron/agent/linux/ip_lib.py", line 466, in execute
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager     check_exit_code=check_exit_code)
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager   File "/opt/stack/neutron/neutron/agent/linux/utils.py", line 76, in execute
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager     raise RuntimeError(m)
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager RuntimeError:
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager Command: ['sudo', '/usr/local/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qlbaas-a61dd6b6-8dbe-4576-b213-f8632892a58c', 'haproxy', '-f', '/opt/stack/data/neutron/lbaas/a61dd6b6-8dbe-4576-b213-f8632892a58c/conf', '-p', '/opt/stack/data/neutron/lbaas/a61dd6b6-8dbe-4576-b213-f8632892a58c/pid', '-sf', '4524']
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager Exit code: 1
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager Stdout: ''
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager Stderr: '[ALERT] 091/101410 (20752) : config : HTTP proxy a61dd6b6-8dbe-4576-b213-f8632892a58c has a cookie but no server list !\n[ALERT] 091/101410 (20752) : Fatal errors found in configuration.\n'
2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager 

I think one solution: check the member list, if no member exists,
Haproxy agent would not deploy the instance or undeploy existed haproxy
process.

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: lbaas

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https://bugs.launchpad.net/bugs/1302283

Title:
  LBaaS Haproxy occurs error if no member is added

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  if VIP&Pool without one member added, the Haproxy agent would report
  config file error like the following:

  2014-04-02 10:14:10.632 17283 DEBUG neutron.openstack.common.lockutils [req-18b873c4-abd7-4483-824f-f553c29ae549 None] Semaphore / lock released "deploy_instance" inner /opt/stack/neutron/neutron/openstack/common/lockutils.py:252
  2014-04-02 10:14:10.633 17283 ERROR neutron.services.loadbalancer.agent.agent_manager [req-18b873c4-abd7-4483-824f-f553c29ae549 None] Unable to deploy instance for pool: a61dd6b6-8dbe-4576-b213-f8632892a58c
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager Traceback (most recent call last):
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager   File "/opt/stack/neutron/neutron/services/loadbalancer/agent/agent_manager.py", line 180, in _reload_pool
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager     self.device_drivers[driver_name].deploy_instance(logical_config)
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager   File "/opt/stack/neutron/neutron/openstack/common/lockutils.py", line 249, in inner
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager     return f(*args, **kwargs)
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager   File "/opt/stack/neutron/neutron/services/loadbalancer/drivers/haproxy/namespace_driver.py", line 280, in deploy_instance
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager     self.update(logical_config)
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager   File "/opt/stack/neutron/neutron/services/loadbalancer/drivers/haproxy/namespace_driver.py", line 95, in update
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager     self._spawn(logical_config, extra_args)
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager   File "/opt/stack/neutron/neutron/services/loadbalancer/drivers/haproxy/namespace_driver.py", line 110, in _spawn
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager     ns.netns.execute(cmd)
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager   File "/opt/stack/neutron/neutron/agent/linux/ip_lib.py", line 466, in execute
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager     check_exit_code=check_exit_code)
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager   File "/opt/stack/neutron/neutron/agent/linux/utils.py", line 76, in execute
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager     raise RuntimeError(m)
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager RuntimeError:
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager Command: ['sudo', '/usr/local/bin/neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ip', 'netns', 'exec', 'qlbaas-a61dd6b6-8dbe-4576-b213-f8632892a58c', 'haproxy', '-f', '/opt/stack/data/neutron/lbaas/a61dd6b6-8dbe-4576-b213-f8632892a58c/conf', '-p', '/opt/stack/data/neutron/lbaas/a61dd6b6-8dbe-4576-b213-f8632892a58c/pid', '-sf', '4524']
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager Exit code: 1
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager Stdout: ''
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager Stderr: '[ALERT] 091/101410 (20752) : config : HTTP proxy a61dd6b6-8dbe-4576-b213-f8632892a58c has a cookie but no server list !\n[ALERT] 091/101410 (20752) : Fatal errors found in configuration.\n'
  2014-04-02 10:14:10.633 17283 TRACE neutron.services.loadbalancer.agent.agent_manager 

  I think one solution: check the member list, if no member exists,
  Haproxy agent would not deploy the instance or undeploy existed
  haproxy process.

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Follow ups

[Bug 1302283] Re: LBaaS Haproxy occurs error if no member is added
From: Thierry Carrez, 2014-06-12
[Bug 1302283] [NEW] LBaaS Haproxy occurs error if no member is added
From: berlin, 2014-04-04
References

[Bug 1302283] [NEW] LBaaS Haproxy occurs error if no member is added
From: berlin, 2014-04-04