一、环境
系统: CentOS 6.4x64 最小化安装
node1: 192.168.1.13
node2: 192.168.1.14
vip: 192.168.1.15
nfs: 192.168.1.10
二、基础配置
node1和node2的操作一样
#关闭iptables和selinux [[email protected] ~]# getenforce Disabled #确保这项是正确的 [[email protected] ~]# service iptables stop #配置本地hosts解析 [[email protected] ~]# echo "192.168.1.13 node1" >>/etc/hosts [[email protected] ~]# echo "192.168.1.14 node2" >>/etc/hosts [[email protected] ~]# cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.1.13 node1 192.168.1.14 node2 #配置epel源 [[email protected] ~]# rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm [[email protected] ~]# sed -i ‘[email protected]#[email protected]@g‘ /etc/yum.repos.d/epel.repo [[email protected] ~]# sed -i ‘[email protected]@#[email protected]‘ /etc/yum.repos.d/epel.repo #同步时间 [[email protected] ~]# yum install ntp -y [[email protected] ~]# echo "*/10 * * * * /usr/sbin/ntpdate asia.pool.ntp.org &>/dev/null" >/var/spool/cron/root [[email protected] ~]# ntpdate asia.pool.ntp.org 21 Jun 17:32:45 ntpdate[1561]: step time server 211.233.40.78 offset -158.552839 sec [[email protected] ~]# hwclock -w #配置ssh互信 [[email protected] ~]# ssh-keygen [[email protected] ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected]
三、安装配置heartbeat
(1).安装heartbeat
#在ha-node1和ha-node2都执行安装操作 [[email protected] ~]# yum install heartbeat -y
(2).配置ha.cf
[[email protected] ~]# cd /usr/share/doc/heartbeat-3.0.4/ [[email protected] heartbeat-3.0.4]# cp authkeys ha.cf haresources /etc/ha.d/ [[email protected] heartbeat-3.0.4]# cd /etc/ha.d/ [[email protected] ha.d]# ls authkeys ha.cf harc haresources rc.d README.config resource.d shellfuncs [[email protected] ha.d]# egrep -v "^$|^#" /etc/ha.d/ha.cf logfile /var/log/ha-log logfacility local1 keepalive 2 deadtime 30 warntime 10 initdead 120 mcast eth0 225.0.10.1 694 1 0 auto_failback on node node1 node node2 crm no
(3).配置authkeys
[[email protected] ha.d]# dd if=/dev/random bs=512 count=1 | openssl md5 0+1 records in 0+1 records out 21 bytes (21 B) copied, 3.1278e-05 s, 671 kB/s (stdin)= 4206bd8388c16292bc03710a0c747f59 [[email protected] ha.d]# grep -v ^# /etc/ha.d/authkeys auth 1 1 md5 4206bd8388c16292bc03710a0c747f59 #将认证文件权限修改成600 [[email protected] ~]# chmod 600 /etc/ha.d/authkeys
(4).配置haresource
[[email protected] ha.d]# grep -v ^# /etc/ha.d/haresources node1 IPaddr::192.168.1.15/24/eth0
(5).启动heartbeat
[[email protected] ha.d]# scp authkeys haresources ha.cf node2:/etc/ha.d/ #node1启动服务 [[email protected] ~]# /etc/init.d/heartbeat start Starting High-Availability services: INFO: Resource is stopped Done. [[email protected] ~]# chkconfig heartbeat off #说明：关闭开机自启动，当服务器重启时，需要人工去启动 #node2启动服务 [[email protected] ~]# /etc/init.d/heartbeat start #查看结果 [[email protected] ~]# ip a |grep eth0 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 inet 192.168.1.13/24 brd 192.168.1.255 scope global eth0 inet 192.168.1.15/24 brd 192.168.1.255 scope global secondary eth0 #vip在主节点上 [[email protected] ~]# ip a |grep eth0 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 inet 192.168.1.14/24 brd 192.168.1.255 scope global eth0 #备节点上没有vip
(6).测试heartbeat
正常状态
#node1信息 [[email protected] ~]# ip a |grep eth0 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 inet 192.168.1.13/24 brd 192.168.1.255 scope global eth0 inet 192.168.1.15/24 brd 192.168.1.255 scope global secondary eth0 #vip在主节点上 #node2信息 [[email protected] ~]# ip a |grep eth0 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 inet 192.168.1.14/24 brd 192.168.1.255 scope global eth0 #备节点上没有vip
模拟主节点宕机后的状态信息
#在主节点node1停止heartbeat服务 [[email protected] ~]# /etc/init.d/heartbeat stop Stopping High-Availability services: Done. [[email protected] ~]# ip a |grep eth0 #主节点的heartbeat服务停止后，vip资源被抢走 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 inet 192.168.1.13/24 brd 192.168.1.255 scope global eth0 #在备节点node2查看资源 [[email protected] ~]# ip a |grep eth0 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 inet 192.168.1.14/24 brd 192.168.1.255 scope global eth0 inet 192.168.1.15/24 brd 192.168.1.255 scope global secondary eth0
恢复主节点的heartbeat服务
[[email protected] ~]# /etc/init.d/heartbeat start Starting High-Availability services: INFO: Resource is stopped Done. #主节点的heartbeat服务恢复后，将资源接管回来了 [[email protected] ~]# ip a |grep eth0 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 inet 192.168.1.13/24 brd 192.168.1.255 scope global eth0 inet 192.168.1.15/24 brd 192.168.1.255 scope global secondary eth0 #查看备节点 [[email protected] ~]# ip a |grep eth0 #vip资源已移除 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 inet 192.168.1.14/24 brd 192.168.1.255 scope global eth0
四、安装部署DRBD
(1).对硬盘进行分区，node1和node2的操作一样
[[email protected] ~]# fdisk /dev/sdb #说明：/dev/sdb分成2个分区/dev/sdb1和/dev/sdb2，/dev/sdb1=19G [[email protected] ~]# partprobe /dev/sdb #对分区进行格式化 [[email protected] ~]# mkfs.ext4 /dev/sdb1 说明：sdb2分区为meta data分区，不需要格式化操作 [[email protected] ~]# tune2fs -c -1 /dev/sdb1 说明：设置最大挂载数为-1,关闭强制检查挂载次数限制
(2).安装DRBD
由于我们的系统是CentOS6.4的，所以我们还需要安装内核模块，版本需要和uname -r保持一致，安装包我们从系统安装软件中提取出来，过程略。node1和node2的安装过程一样，这里只给出node1的安装过程
#安装内核文件 [[email protected] ~]# rpm -ivh kernel-devel-2.6.32-358.el6.x86_64.rpm kernel-headers-2.6.32-358.el6.x86_64.rpm [[email protected] ~]# yum install drbd84 kmod-drbd84 -y
(3).配置DRBD
a.修改全局配置文件
[[email protected] ~]# egrep -v "^$|^#|^[[:space:]]+#" /etc/drbd.d/global_common.conf
global {
usage-count no;
}
common {
protocol C;
handlers {
}
startup {
}
options {
}
disk {
on-io-error detach;
no-disk-flushes;
no-md-flushes;
rate 200M;
}
net {
sndbuf-size 512k;
max-buffers 8000;
unplug-watermark 1024;
max-epoch-size 8000;
cram-hmac-alg "sha1";
shared-secret "weyee2014";
after-sb-0pri disconnect;
after-sb-1pri disconnect;
after-sb-2pri disconnect;
rr-conflict disconnect;
}
}
b.增加资源
[[email protected] ~]# cat /etc/drbd.d/nfsdata.res
resource nfsdata {
on node1 {
device /dev/drbd1;
disk /dev/sdb1;
address 192.168.1.13:7789;
meta-disk /dev/sdb2 [0];
}
on node2 {
device /dev/drbd1;
disk /dev/sdb1;
address 192.168.1.14:7789;
meta-disk /dev/sdb2 [0];
}
}
c.将配置文件复制到node2上，重启系统加载drbd模块，初始化meta数据
[[email protected] ~]# scp global_common.conf nfsdata.res node2:/etc/drbd.d/ [[email protected] ~]# depmod [[email protected] ~]# modprobe drbd [[email protected] ~]# lsmod |grep drbd drbd 365931 0 libcrc32c 1246 1 drbd #在node1初始化meta数据 [[email protected] ~]# drbdadm create-md nfsdata initializing activity log NOT initializing bitmap Writing meta data... New drbd meta data block successfully created. #在node2上加载模块，初始化meta数据 [[email protected] ~]# depmod [[email protected] ~]# modprobe drbd [[email protected] ~]# lsmod |grep drbd drbd 365931 0 libcrc32c 1246 1 drbd [[email protected] ~]# drbdadm create-md nfsdata initializing activity log NOT initializing bitmap Writing meta data... New drbd meta data block successfully created.
d.在node1和node2上启动drbd
#node1操作
时间： 2024-08-05 18:10:23