def _check_ha_router_process_status(self):
"""Check HA router VRRP process status in network node.
Check if the HA router HA routers VRRP (keepalived) process count
and state change python monitor process count meet the expected
quantity. If so, l3-agent will not call neutron to set all related
HA port to down state, this can prevent some unexpected VRRP
re-election. If not, a physical host may have down and just
restarted, set HA network port status to DOWN.
"""
if (self.conf.agent_mode not in [
lib_const.L3_AGENT_MODE_DVR_SNAT,
lib_const.L3_AGENT_MODE_LEGACY
]):
return
if self.ha_router_count <= 0:
return
# HA routers VRRP (keepalived) process count
vrrp_pcount = linux_utils.get_process_count_by_name("keepalived")
LOG.debug("VRRP process count %s.", vrrp_pcount)
# HA routers state change python monitor process count
vrrp_st_pcount = linux_utils.get_process_count_by_name(
"neutron-keepalived-state-change")
LOG.debug("neutron-keepalived-state-change process count %s.",
vrrp_st_pcount)
# Due to the process structure design of keepalived and the current
# config of l3-ha router, it will run one main 'keepalived' process
# and a child 'VRRP' process. So in the following check, we divided
# number of processes by 2 to match the ha router count.
if (not (vrrp_pcount / 2 >= self.ha_router_count
and vrrp_st_pcount >= self.ha_router_count)):
LOG.debug("Call neutron server to set HA port to DOWN state.")
try:
# We set HA network port status to DOWN to let l2 agent
# update it to ACTIVE after wiring. This allows us to spawn
# keepalived only when l2 agent finished wiring the port.
self.plugin_rpc.update_all_ha_network_port_statuses(
self.context)
except Exception:
LOG.exception('update_all_ha_network_port_statuses failed')
def _check_ha_router_process_status(self):
"""Check HA router VRRP process status in network node.
Check if the HA router HA routers VRRP (keepalived) process count
and state change python monitor process count meet the expected
quantity. If so, l3-agent will not call neutron to set all related
HA port to down state, this can prevent some unexpected VRRP
re-election. If not, a physical host may have down and just
restarted, set HA network port status to DOWN.
"""
if (self.conf.agent_mode not in [lib_const.L3_AGENT_MODE_DVR_SNAT,
lib_const.L3_AGENT_MODE_LEGACY]):
return
if self.ha_router_count <= 0:
return
# HA routers VRRP (keepalived) process count
vrrp_pcount = linux_utils.get_process_count_by_name("keepalived")
LOG.debug("VRRP process count %s.", vrrp_pcount)
# HA routers state change python monitor process count
vrrp_st_pcount = linux_utils.get_process_count_by_name(
"neutron-keepalived-state-change")
LOG.debug("neutron-keepalived-state-change process count %s.",
vrrp_st_pcount)
# Due to the process structure design of keepalived and the current
# config of l3-ha router, it will run one main 'keepalived' process
# and a child 'VRRP' process. So in the following check, we divided
# number of processes by 2 to match the ha router count.
if (not (vrrp_pcount / 2 >= self.ha_router_count and
vrrp_st_pcount >= self.ha_router_count)):
LOG.debug("Call neutron server to set HA port to DOWN state.")
try:
# We set HA network port status to DOWN to let l2 agent
# update it to ACTIVE after wiring. This allows us to spawn
# keepalived only when l2 agent finished wiring the port.
self.plugin_rpc.update_all_ha_network_port_statuses(
self.context)
except Exception:
LOG.exception('update_all_ha_network_port_statuses failed')
def test_root_process(self):
cmd = ['sleep', '100']
processes = []
for _ in range(20):
process = async_process.AsyncProcess(cmd)
process.start()
processes.append(process)
for process in processes:
common_utils.wait_until_true(lambda: process._process.pid,
sleep=0.5,
timeout=5)
self.addCleanup(self._stop_processes, processes)
number_of_sleep = utils.get_process_count_by_name('sleep')
# NOTE(ralonsoh): other tests can spawn sleep processes too, but at
# this point we know there are, at least, 20 "sleep" processes running.
self.assertLessEqual(20, number_of_sleep)
