PS：接下来会直接介绍pacemaker和corosync的安装和配置，关于zabbix+LNMP环境的部分请参考之前发表的“zabbix3.2编译安装”或“zabbix高可用”两篇文章。 五、安装pacemaker和corosync（各个节点均要运行） 1、前提条件各个节点完成主机解析工作。
vim /etc/hosts
# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.8.61 zabbix01.okooo.cn zabbix01
192.168.8.63 zabbix02.okooo.cn zabbix02
192.168.8.120 zbxdb.okooo.cn zbxdb 2、各个节点的时间同步
ntpdate 210.72.145.44 3、各个节点完成互信工作
ssh-keygen -t rsa -f ~/.ssh/id_rsa -P ''
ssh-copy-id -i .ssh/id_rsa.pub root@zabbix01/02/db.okooo.cn 4、关闭防火墙与SELinux
# cat /etc/selinux/config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - SELinux is fully disabled.
SELINUX=disabled
# SELINUXTYPE= type of policy in use. Possible values are:
# targeted - Only targeted network daemons are protected.
# strict - Full SELinux protection.
SELINUXTYPE=targeted
# /etc/init.d/iptables status
iptables: Firewall is not running. 5、安装pacemaker+corosync+pcs
yum install -y pacemaker corosync pcs 六、配置corosync 1、设置变量
export ais_port=4000
export ais_mcast=226.94.1.1
export ais_addr=192.168.15.0
env|grep ais 2、更改corosync配置文件
cp /etc/corosync/corosync.conf.example /etc/corosync/corosync.conf
sed -i.bak“s /.* mcastaddr：。* / mcastaddr：\ $ ais_mcast / g”/etc/corosync/corosync.conf
sed -i.bak“s /.* mcastport：。* / mcastport：\ $ ais_port / g”/etc/corosync/corosync.conf
sed -i.bak“s /.* bindnetaddr：。* / bindnetaddr：\ $ ais_addr / g”/etc/corosync/corosync.confcat /etc/corosync/corosync.conf
# Please read the corosync.conf.5 manual page
compatibility: whitetank
totem {
version: 2
secauth: on #启动认证
threads: 2
interface {
ringnumber: 0
bindnetaddr: 192.168.15.0 #修改心跳线网段
mcastaddr: 226.94.1.1 #组播传播心跳信息
mcastport: 4000
ttl: 1
}
}
logging {
fileline: off
to_stderr: no
to_logfile: yes
to_syslog: no
logfile: /var/log/cluster/corosync.log #日志位置
debug: off
timestamp: on
logger_subsys {
subsys: AMF
debug: off
}
}
amf {
mode: disabled
}
#启用pacemaker
service {
ver: 0
name: pacemaker
}
aisexec {
user: root
group: root
}
注：用 man corosync.conf 可以查看所有选项的意思。 3.生成密钥文件
注：corosync生成key文件会默认调用/dev/random随机数设备，一旦系统中断的IRQS的随机数不够用，将会产生大量的等待时间，因此，为了节约时间，我们在生成key之前讲random替换成urandom，以便节约时间。
mv /dev/{random,random.bak}
ln -s /dev/urandom /dev/random
corosync-keygen
PS:以上步骤要在所有节点上运行。 七、安装和配置cman
yum install -y cman
sed -i.sed "s/.*CMAN_QUORUM_TIMEOUT=.*/CMAN_QUORUM_TIMEOUT=0/g" /etc/sysconfig/cman
# cat /etc/sysconfig/cman
# CMAN_CLUSTER_TIMEOUT -- amount of time to wait to join a cluster
# before giving up. If CMAN_CLUSTER_TIMEOUT is positive, then we will
# wait CMAN_CLUSTER_TIMEOUT seconds before giving up and failing if
# we can't join a cluster. If CMAN_CLUSTER_TIMEOUT is zero, then we
# will wait indefinitely for a cluster join. If CMAN_CLUSTER_TIMEOUT is
# negative, do not check to see if we have joined a cluster.
#CMAN_CLUSTER_TIMEOUT=5# CMAN_QUORUM_TIMEOUT -- amount of time to wait for a quorate cluster on
# startup. Quorum is needed by many other applications, so we may as
# well wait here. If CMAN_QUORUM_TIMEOUT is zero, quorum will
# be ignored.
CMAN_QUORUM_TIMEOUT=0# CMAN_SHUTDOWN_TIMEOUT -- amount of time to wait for cman to become a
# cluster member before calling 'cman_tool' leave during shutdown.
# The default is 60 seconds
#CMAN_SHUTDOWN_TIMEOUT=6# CMAN_NOTIFYD_START - control the startup behaviour for cmannotifyd,
# the variable can take 3 values:
# yes | will always start cmannotifyd
# no | will never start cmannotifyd
# conditional (default) | will start cmannotifyd only if scriptlets
# are found in /etc/cluster/cman-notify.d
#CMAN_NOTIFYD_START=conditional# CMAN_SSHD_START -- control sshd startup behaviour,
# the variable can take 2 values:
# yes | cman will start sshd as early as possible
# no (default) | cman will not start sshd
#CMAN_SSHD_START=no# DLM_CONTROLD_OPTS -- allow extra options to be passed to dlm_controld daemon.
#DLM_CONTROLD_OPTS=""# Allow tuning of DLM kernel config.
# do NOT change unless instructed to do so.
#DLM_LKBTBL_SIZE=""
#DLM_RSBTBL_SIZE=""
#DLM_DIRTBL_SIZE=""
#DLM_TCP_PORT=""# FENCE_JOIN_TIMEOUT -- seconds to wait for fence domain join to
# complete. If the join hasn't completed in this time, fence_tool join
# exits with an error, and this script exits with an error. To wait
# indefinitely set the value to -1.
#FENCE_JOIN_TIMEOUT=20# FENCED_MEMBER_DELAY -- amount of time to delay fence_tool join to allow
# all nodes in cluster.conf to become cluster members. In seconds.
#FENCED_MEMBER_DELAY=45# FENCE_JOIN -- boolean value used to control whether or not this node
# should join the fence domain. If FENCE_JOIN is set to "no", then
# the script will not attempt to the fence domain. If FENCE_JOIN is
# set to "yes", then the script will attempt to join the fence domain.
# If FENCE_JOIN is set to any other value, the default behavior is
# to join the fence domain (equivalent to "yes").
# When setting FENCE_JOIN to "no", it is important to also set
# DLM_CONTROLD_OPTS="-f0" (at least) for correct operation.
# Please note that clusters without fencing are not
# supported by Red Hat except for MRG installations.
#FENCE_JOIN="yes"# FENCED_OPTS -- allow extra options to be passed to fence daemon.
#FENCED_OPTS=""# NETWORK_BRIDGE_SCRIPT -- script to use for xen network bridging.
# This script must exist in the /etc/xen/scripts directory.
# The default script is "network-bridge".
#NETWORK_BRIDGE_SCRIPT="network-bridge"# CLUSTERNAME -- override clustername as specified in cluster.conf
#CLUSTERNAME=""# NODENAME -- specify the nodename of this node. Default autodetected.
#NODENAME=""# CONFIG_LOADER -- select default config parser.
# This can be:
# xmlconfig - read directly from cluster.conf and use ricci as default
# config propagation method. (default)
#CONFIG_LOADER=xmlconfig# CONFIG_VALIDATION -- select default config validation behaviour.
# This can be:
# FAIL - Use a very strict checking. The config will not be loaded if there
# are any kind of warnings/errors
# WARN - Same as FAIL, but will allow the config to load (this is temporarily
# the default behaviour)
# NONE - Disable config validation. Highly discouraged
#CONFIG_VALIDATION=WARN# CMAN_LEAVE_OPTS -- allows extra options to be passed to cman_tool when leave
# operation is performed.
#CMAN_LEAVE_OPTS=""# INITLOGLEVEL -- select how verbose the init script should be.
# Possible values:
# quiet - only one line notification for start/stop operations
# terse (default) - show only required activity
# full - show everything
#INITLOGLEVEL=terse 八、编辑cluster.conf
vim /etc/cluster/cluster.conf
# cat /etc/cluster/cluster.conf
=> when running more clusters in same network change multicast address
九、检查配置文件并开机自启
ccs_config_validate
service cman start
cman_tool nodes
service pacemaker start
chkconfig cman on
chkconfig pacemaker on
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