restored files/ dir
This commit is contained in:
Edward Hope-Morley
parent
e777443c5a
commit
7ddfbecc44
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#!/bin/sh
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#
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#
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# NeutronAgentMon OCF RA.
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# Starts crm_mon in background which logs cluster status as
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# html to the specified file.
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#
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# Copyright 2014 Canonical Ltd.
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#
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# Authors: Hui Xiang <hui.xiang@canonical.com>
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# Edward Hope-Morley <edward.hope-morley@canonical.com>
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#
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# OCF instance parameters:
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# OCF_RESKEY_file
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#######################################################################
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# Initialization:
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: ${OCF_FUNCTIONS=${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs}
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. ${OCF_FUNCTIONS}
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: ${__OCF_ACTION=$1}
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#######################################################################
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meta_data() {
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cat <<END
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<?xml version="1.0"?>
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<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
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<resource-agent name="NeutronAgentMon">
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<version>1.0</version>
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<longdesc lang="en">
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This is a NeutronAgentMon Resource Agent.
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It monitors the 'neutron-ha-monitor daemon' status.
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</longdesc>
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<shortdesc lang="en">Monitor '/usr/local/bin/neutron-ha-monitor.py' in the background.</shortdesc>
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<parameters>
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<parameter name="file" unique="0">
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<longdesc lang="en">
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The file we want to run as a daemon.
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</longdesc>
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<shortdesc lang="en">The file we want to run as a daemon.</shortdesc>
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<content type="string" default="/usr/local/bin/neutron-ha-monitor.py" />
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</parameter>
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</parameters>
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<actions>
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<action name="start" timeout="20" />
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<action name="stop" timeout="20" />
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<action name="monitor" depth="0" timeout="20" interval="60" />
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<action name="meta-data" timeout="5" />
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<action name="validate-all" timeout="30" />
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</actions>
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</resource-agent>
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END
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}
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#######################################################################
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NeutronAgentMon_usage() {
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cat <<END
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usage: $0 {start|stop|monitor|validate-all|meta-data}
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Expects to have a fully populated OCF RA-compliant environment set.
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END
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}
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NeutronAgentMon_exit() {
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if [ $1 != 0 ]; then
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exit $OCF_ERR_GENERIC
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else
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exit $OCF_SUCCESS
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fi
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}
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NeutronAgentMon_start() {
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pid=`sudo ps -aux | grep neutron-ha-m\[o\]nitor.py | awk -F' ' '{print $2}'`
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if [ -z $pid ]; then
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ocf_log info "[NeutronAgentMon_start] Start Monitor daemon."
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sudo mkdir -p /var/log/neutron-ha
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sudo python /usr/local/bin/neutron-ha-monitor.py \
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--config-file /var/lib/juju-neutron-ha/neutron-ha-monitor.conf \
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--log-file /var/log/neutron-ha/monitor.log >> /dev/null 2>&1 & echo $!
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sleep 5
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else
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ocf_log warn "[NeutronAgentMon_start] Monitor daemon already running."
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fi
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NeutronAgentMon_exit $?
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}
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NeutronAgentMon_stop() {
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pid=`sudo ps -aux | grep neutron-ha-m\[o\]nitor.py | awk -F' ' '{print $2}'`
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if [ ! -z $pid ]; then
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sudo kill -s 9 $pid
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ocf_log info "[NeutronAgentMon_stop] Pid $pid is killed."
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else
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ocf_log warn "[NeutronAgentMon_stop] Monitor daemon already stopped."
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fi
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NeutronAgentMon_exit 0
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}
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NeutronAgentMon_monitor() {
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pid=`sudo ps -aux | grep neutron-ha-m\[o\]nitor.py | awk -F' ' '{print $2}'`
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if [ ! -z $pid ]; then
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ocf_log info "[NeutronAgentMon_monitor] success."
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exit $OCF_SUCCESS
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fi
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exit $OCF_NOT_RUNNING
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}
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NeutronAgentMon_validate() {
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# Existence of the user
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if [ -f $OCF_RESKEY_file ]; then
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echo "Validate OK"
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return $OCF_SUCCESS
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else
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ocf_log err "The file $OCF_RESKEY_file does not exist!"
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exit $OCF_ERR_ARGS
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fi
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}
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if [ $# -ne 1 ]; then
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NeutronAgentMon_usage
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exit $OCF_ERR_ARGS
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fi
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: ${OCF_RESKEY_update:="15000"}
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: ${OCF_RESKEY_pidfile:="/tmp/NeutronAgentMon_${OCF_RESOURCE_INSTANCE}.pid"}
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: ${OCF_RESKEY_htmlfile:="/tmp/NeutronAgentMon_${OCF_RESOURCE_INSTANCE}.html"}
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OCF_RESKEY_update=`expr $OCF_RESKEY_update / 1000`
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case $__OCF_ACTION in
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meta-data) meta_data
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exit $OCF_SUCCESS
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;;
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start) NeutronAgentMon_start
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;;
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stop) NeutronAgentMon_stop
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;;
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monitor) NeutronAgentMon_monitor
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;;
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validate-all) NeutronAgentMon_validate
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;;
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usage|help) NeutronAgentMon_usage
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exit $OCF_SUCCESS
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;;
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*) NeutronAgentMon_usage
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exit $OCF_ERR_UNIMPLEMENTED
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;;
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esac
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exit $?
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@ -0,0 +1,4 @@
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[DEFAULT]
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verbose=True
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#debug=True
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check_interval=8
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@ -0,0 +1,430 @@
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# Copyright 2014 Canonical Ltd.
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#
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# Authors: Hui Xiang <hui.xiang@canonical.com>
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# Joshua Zhang <joshua.zhang@canonical.com>
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# Edward Hope-Morley <edward.hope-morley@canonical.com>
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#
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"""
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Helpers for monitoring Neutron agents, reschedule failed agents,
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cleaned resources on failed nodes.
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"""
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import os
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import re
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import sys
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import signal
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import socket
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import subprocess
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import time
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from oslo.config import cfg
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from neutron.agent.linux import ovs_lib
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from neutron.agent.linux import ip_lib
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from neutron.common import exceptions
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from neutron.openstack.common import log as logging
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LOG = logging.getLogger(__name__)
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class Daemon(object):
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"""A generic daemon class.
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Usage: subclass the Daemon class and override the run() method
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"""
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def __init__(self, stdin='/dev/null', stdout='/dev/null',
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stderr='/dev/null', procname='python'):
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self.stdin = stdin
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self.stdout = stdout
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self.stderr = stderr
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self.procname = procname
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def _fork(self):
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try:
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pid = os.fork()
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if pid > 0:
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sys.exit(0)
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except OSError:
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LOG.exception('Fork failed')
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sys.exit(1)
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def daemonize(self):
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"""Daemonize process by doing Stevens double fork."""
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# fork first time
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self._fork()
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# decouple from parent environment
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os.chdir("/")
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os.setsid()
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os.umask(0)
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# fork second time
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self._fork()
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# redirect standard file descriptors
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sys.stdout.flush()
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sys.stderr.flush()
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stdin = open(self.stdin, 'r')
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stdout = open(self.stdout, 'a+')
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stderr = open(self.stderr, 'a+', 0)
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os.dup2(stdin.fileno(), sys.stdin.fileno())
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os.dup2(stdout.fileno(), sys.stdout.fileno())
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os.dup2(stderr.fileno(), sys.stderr.fileno())
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signal.signal(signal.SIGTERM, self.handle_sigterm)
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def handle_sigterm(self, signum, frame):
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sys.exit(0)
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def start(self):
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"""Start the daemon."""
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self.daemonize()
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self.run()
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def run(self):
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"""Override this method when subclassing Daemon.
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start() will call this method after the process has daemonized.
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"""
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pass
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class MonitorNeutronAgentsDaemon(Daemon):
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def __init__(self):
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super(MonitorNeutronAgentsDaemon, self).__init__()
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logging.setup('Neuron-HA-Monitor')
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LOG.info('Monitor Neutron Agent Loop Init')
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self.hostname = None
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self.env = {}
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def get_env(self):
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envrc_f = '/etc/legacy_ha_envrc'
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envrc_f_m = False
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if os.path.isfile(envrc_f):
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ctime = time.ctime(os.stat(envrc_f).st_ctime)
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mtime = time.ctime(os.stat(envrc_f).st_mtime)
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if ctime != mtime:
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envrc_f_m = True
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if not self.env or envrc_f_m:
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with open(envrc_f, 'r') as f:
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for line in f:
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data = line.strip().split('=')
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if data and data[0] and data[1]:
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self.env[data[0]] = data[1]
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else:
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raise Exception("OpenStack env data uncomplete.")
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return self.env
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def get_hostname(self):
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if not self.hostname:
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self.hostname = socket.gethostname()
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return self.hostname
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def get_root_helper(self):
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return 'sudo'
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def list_monitor_res(self):
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# List crm resource 'cl_monitor' running node
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nodes = []
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cmd = ['crm', 'resource', 'show', 'cl_monitor']
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output = subprocess.check_output(cmd)
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pattern = re.compile('resource cl_monitor is running on: (.*) ')
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nodes = pattern.findall(output)
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return nodes
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def get_crm_res_lead_node(self):
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nodes = self.list_monitor_res()
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if nodes:
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return nodes[0].strip()
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else:
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LOG.error('Failed to get crm resource.')
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return None
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def unplug_device(self, device):
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try:
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device.link.delete()
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except RuntimeError:
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root_helper = self.get_root_helper()
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# Maybe the device is OVS port, so try to delete
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bridge_name = ovs_lib.get_bridge_for_iface(root_helper,
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device.name)
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if bridge_name:
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bridge = ovs_lib.OVSBridge(bridge_name, root_helper)
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bridge.delete_port(device.name)
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else:
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LOG.debug('Unable to find bridge for device: %s', device.name)
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def get_pattern(self, key, text):
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if not key or not text:
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LOG.debug('Invalid key(%s) or text(%s)' % (key, text))
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return None
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pattern = re.compile('%s' % key)
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result = pattern.findall(text)
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return result
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def _cleanup(self, key1, key2):
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namespaces = []
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if key1:
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for k in key1.iterkeys():
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namespaces.append(key2 + '-' + k)
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else:
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try:
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cmd = ['sudo', 'ip', 'netns']
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ns = subprocess.check_output(cmd)
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namespaces = self.get_pattern('(%s.*)' % key2, ns)
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except RuntimeError as e:
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LOG.error('Failed to list namespace, (%s)' % e)
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if namespaces:
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LOG.info('Namespaces: %s is going to be deleted.' % namespaces)
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self.destroy_namespaces(namespaces)
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def cleanup_dhcp(self, networks):
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self._cleanup(networks, 'qdhcp')
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def cleanup_router(self, routers):
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self._cleanup(routers, 'qrouter')
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def destroy_namespaces(self, namespaces):
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try:
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root_helper = self.get_root_helper()
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for namespace in namespaces:
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ip = ip_lib.IPWrapper(root_helper, namespace)
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if ip.netns.exists(namespace):
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for device in ip.get_devices(exclude_loopback=True):
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self.unplug_device(device)
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ip.garbage_collect_namespace()
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except Exception:
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LOG.exception('Error unable to destroy namespace: %s', namespace)
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def is_same_host(self, host):
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return str(host).strip() == self.get_hostname()
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def validate_reschedule(self):
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crm_no_1_node = self.get_crm_res_lead_node()
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if not crm_no_1_node:
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LOG.error('No crm first node could be found.')
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return False
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if not self.is_same_host(crm_no_1_node):
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LOG.warn('Only the first crm node %s could reschedule. '
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% crm_no_1_node)
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return False
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return True
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def l3_agents_reschedule(self, l3_agents, routers, quantum):
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if not self.validate_reschedule():
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return
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index = 0
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for router_id in routers:
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agent = index % len(l3_agents)
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LOG.info('Moving router %s from %s to %s' %
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(router_id, routers[router_id], l3_agents[agent]))
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try:
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quantum.remove_router_from_l3_agent(l3_agent=routers[router_id],
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router_id=router_id)
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except exceptions.NeutronException as e:
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LOG.error('Remove router raised exception: %s' % e)
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try:
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quantum.add_router_to_l3_agent(l3_agent=l3_agents[agent],
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body={'router_id': router_id})
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except exceptions.NeutronException as e:
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LOG.error('Add router raised exception: %s' % e)
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index += 1
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def dhcp_agents_reschedule(self, dhcp_agents, networks, quantum):
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if not self.validate_reschedule():
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return
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index = 0
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for network_id in networks:
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agent = index % len(dhcp_agents)
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LOG.info('Moving network %s from %s to %s' % (network_id,
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networks[network_id], dhcp_agents[agent]))
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try:
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quantum.remove_network_from_dhcp_agent(
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dhcp_agent=networks[network_id], network_id=network_id)
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except exceptions.NeutronException as e:
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LOG.error('Remove network raised exception: %s' % e)
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try:
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quantum.add_network_to_dhcp_agent(
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dhcp_agent=dhcp_agents[agent],
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body={'network_id': network_id})
|
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except exceptions.NeutronException as e:
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LOG.error('Add network raised exception: %s' % e)
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index += 1
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def get_quantum_client(self):
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env = self.get_env()
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if not env:
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LOG.info('Unable to re-assign resources at this time')
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return None
|
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|
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try:
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from quantumclient.v2_0 import client
|
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except ImportError:
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# Try to import neutronclient instead for havana+
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from neutronclient.v2_0 import client
|
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|
||||
auth_url = '%(auth_protocol)s://%(keystone_host)s:%(auth_port)s/v2.0' \
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% env
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quantum = client.Client(username=env['service_username'],
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password=env['service_password'],
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tenant_name=env['service_tenant'],
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auth_url=auth_url,
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region_name=env['region'])
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return quantum
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def reassign_agent_resources(self, quantum=None):
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"""Use agent scheduler API to detect down agents and re-schedule"""
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if not quantum:
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LOG.error('Failed to get quantum client.')
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return
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|
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try:
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DHCP_AGENT = "DHCP Agent"
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L3_AGENT = "L3 Agent"
|
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agents = quantum.list_agents(agent_type=DHCP_AGENT)
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except exceptions.NeutronException as e:
|
||||
LOG.error('Failed to get quantum agents, %s' % e)
|
||||
return
|
||||
|
||||
dhcp_agents = []
|
||||
l3_agents = []
|
||||
networks = {}
|
||||
for agent in agents['agents']:
|
||||
hosted_networks = quantum.list_networks_on_dhcp_agent(
|
||||
agent['id'])['networks']
|
||||
if not agent['alive']:
|
||||
LOG.info('DHCP Agent %s down' % agent['id'])
|
||||
for network in hosted_networks:
|
||||
networks[network['id']] = agent['id']
|
||||
if self.is_same_host(agent['host']):
|
||||
self.cleanup_dhcp(networks)
|
||||
else:
|
||||
dhcp_agents.append(agent['id'])
|
||||
LOG.info('Active dhcp agents: %s' % agent['id'])
|
||||
if not hosted_networks and self.is_same_host(agent['host']):
|
||||
self.cleanup_dhcp(None)
|
||||
|
||||
agents = quantum.list_agents(agent_type=L3_AGENT)
|
||||
routers = {}
|
||||
for agent in agents['agents']:
|
||||
hosted_routers = quantum.list_routers_on_l3_agent(
|
||||
agent['id'])['routers']
|
||||
if not agent['alive']:
|
||||
LOG.info('L3 Agent %s down' % agent['id'])
|
||||
for router in hosted_routers:
|
||||
routers[router['id']] = agent['id']
|
||||
if self.is_same_host(agent['host']):
|
||||
self.cleanup_router(routers)
|
||||
else:
|
||||
l3_agents.append(agent['id'])
|
||||
LOG.info('Active l3 agents: %s' % agent['id'])
|
||||
if not hosted_routers and self.is_same_host(agent['host']):
|
||||
self.cleanup_router(None)
|
||||
|
||||
if not networks and not routers:
|
||||
LOG.info('No networks and routers hosted on failed agents.')
|
||||
return
|
||||
|
||||
if len(dhcp_agents) == 0 and len(l3_agents) == 0:
|
||||
LOG.error('Unable to relocate resources, there are %s dhcp_agents '
|
||||
'and %s l3_agents in this cluster' % (len(dhcp_agents),
|
||||
len(l3_agents)))
|
||||
return
|
||||
|
||||
if len(l3_agents) > 0:
|
||||
self.l3_agents_reschedule(l3_agents, routers, quantum)
|
||||
# new l3 node will not create a tunnel if don't restart ovs process
|
||||
|
||||
if len(dhcp_agents) > 0:
|
||||
self.dhcp_agents_reschedule(dhcp_agents, networks, quantum)
|
||||
|
||||
|
||||
def check_ovs_tunnel(self, quantum=None):
|
||||
if not quantum:
|
||||
LOG.error('Failed to get quantum client.')
|
||||
return
|
||||
|
||||
try:
|
||||
OVS_AGENT = 'Open vSwitch agent'
|
||||
agents = quantum.list_agents(agent_type=OVS_AGENT)
|
||||
except exceptions.NeutronException as e:
|
||||
LOG.error('No ovs agent found on localhost, error:%s.' % e)
|
||||
return
|
||||
|
||||
for agent in agents['agents']:
|
||||
if self.is_same_host(agent['host']):
|
||||
conf = agent['configurations']
|
||||
if 'gre' in conf['tunnel_types'] and conf['l2_population'] \
|
||||
and conf['devices']:
|
||||
LOG.warning('local ovs agent:%s' % agent)
|
||||
ovs_output = subprocess.check_output(['ovs-vsctl',
|
||||
'list-ports', 'br-tun'])
|
||||
ports = ovs_output.strip().split('\n')
|
||||
look_up_gre_port = False
|
||||
for port in ports:
|
||||
if port.startswith('gre-'):
|
||||
look_up_gre_port = True
|
||||
break
|
||||
if not look_up_gre_port:
|
||||
try:
|
||||
LOG.error('Found namespace, but no ovs tunnel is created,'
|
||||
'restart ovs agent.')
|
||||
cmd = ['sudo', 'service', 'neutron-plugin-openvswitch-agent',
|
||||
'restart']
|
||||
subprocess.call(cmd)
|
||||
except subprocess.CalledProcessError:
|
||||
LOG.error('Failed to restart neutron-plugin-openvswitch-agent.')
|
||||
|
||||
def check_local_agents(self):
|
||||
services = ['openvswitch-switch', 'neutron-dhcp-agent',
|
||||
'neutron-metadata-agent', 'neutron-vpn-agent']
|
||||
for s in services:
|
||||
status = ['sudo', 'service', s, 'status']
|
||||
restart = ['sudo', 'service', s, 'restart']
|
||||
start = ['sudo', 'service', s, 'start']
|
||||
stop = 'neutron-vpn-agent stop/waiting'
|
||||
try:
|
||||
output = subprocess.check_output(status)
|
||||
if output.strip() == stop:
|
||||
subprocess.check_output(start)
|
||||
if s == 'neutron-metadata-agent':
|
||||
subprocess.check_output(['sudo', 'service',
|
||||
'neutron-vpn-agent',
|
||||
'restart'])
|
||||
except subprocess.CalledProcessError:
|
||||
LOG.error('Restart service: %s' % s)
|
||||
subprocess.check_output(restart)
|
||||
if s == 'neutron-metadata-agent':
|
||||
subprocess.check_output(['sudo', 'service',
|
||||
'neutron-vpn-agent',
|
||||
'restart'])
|
||||
|
||||
def run(self):
|
||||
while True:
|
||||
LOG.info('Monitor Neutron HA Agent Loop Start')
|
||||
quantum = self.get_quantum_client()
|
||||
self.reassign_agent_resources(quantum=quantum)
|
||||
self.check_ovs_tunnel(quantum=quantum)
|
||||
self.check_local_agents()
|
||||
LOG.info('sleep %s' % cfg.CONF.check_interval)
|
||||
time.sleep(float(cfg.CONF.check_interval))
|
||||
|
||||
|
||||
if __name__ == '__main__':
|
||||
opts = [
|
||||
cfg.StrOpt('check_interval',
|
||||
default=8,
|
||||
help='Check Neutron Agents interval.'),
|
||||
]
|
||||
|
||||
cfg.CONF.register_cli_opts(opts)
|
||||
cfg.CONF(project='monitor_neutron_agents', default_config_files=[])
|
||||
logging.setup('Neuron-HA-Monitor')
|
||||
monitor_daemon = MonitorNeutronAgentsDaemon()
|
||||
monitor_daemon.start()
|
||||
Loading…
Reference in New Issue