四、Pacemaker 安装与配置（参考博文： ）
1.安装pacemaker
node1:
[root@node1 ~]# yum install -y pacemaker
node2:
[root@node2 ~]# yum install -y pacemaker
2.安装crmsh
node1:
[root@node1 ~]# wget SUSE.org/repositories/network:/ha-clustering:/Stable/CentOS_CentOS-6/x86_64/crmsh-1.2.6-0.rc2.2.1.x86_64.rpm
[root@node1 ~]# rpm -ivh crmsh-1.2.6-0.rc2.2.1.x86_64.rpm
warning: crmsh-1.2.6-0.rc2.2.1.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 7b709911: NOKEY
error: Failed dependencies:
pssh is needed by crmsh-1.2.6-0.rc2.2.1.x86_64
Python-dateutil is needed by crmsh-1.2.6-0.rc2.2.1.x86_64
python-lxml is needed by crmsh-1.2.6-0.rc2.2.1.x86_64
[root@node1 ~]# yum install -y python-dateutil python-lxml
[root@node1 ~]# rpm -ivh crmsh-1.2.6-0.rc2.2.1.x86_64.rpm --nodeps
warning: crmsh-1.2.6-0.rc2.2.1.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 7b709911: NOKEY
Preparing... ########################################### [100%]
1:crmsh ########################################### [100%]
[root@node1 ~]# crm
Cannot change active directory to /var/lib/pacemaker/cores/root: No such file or directory (2)
crm(live)# help
This is crm shell, a Pacemaker command line interface.
Available commands:
cib manage shadow CIBs
resource resources management
configure CRM cluster configuration
node nodes management
options user preferences
history CRM cluster history
site Geo-cluster support
ra resource agents information center
status show cluster status
help,? show help (help topics for list of topics)
end,cd,up go back one level
quit,bye,exit exit the program
node2:
[root@node2 ~]# wget :/ha-clustering:/Stable/CentOS_CentOS-6/x86_64/crmsh-1.2.6-0.rc2.2.1.x86_64.rpm
[root@node2 ~]# rpm -ivh crmsh-1.2.6-0.rc2.2.1.x86_64.rpm
warning: crmsh-1.2.6-0.rc2.2.1.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 7b709911: NOKEY
error: Failed dependencies:
pssh is needed by crmsh-1.2.6-0.rc2.2.1.x86_64
python-dateutil is needed by crmsh-1.2.6-0.rc2.2.1.x86_64
python-lxml is needed by crmsh-1.2.6-0.rc2.2.1.x86_64
[root@node2 ~]# yum install -y python-dateutil python-lxml
[root@node2 ~]# rpm -ivh crmsh-1.2.6-0.rc2.2.1.x86_64.rpm --nodeps
warning: crmsh-1.2.6-0.rc2.2.1.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 7b709911: NOKEY
Preparing... ########################################### [100%]
1:crmsh ########################################### [100%]
[root@node2 ~]# crm
Cannot change active directory to /var/lib/pacemaker/cores/root: No such file or directory (2)
crm(live)# help
This is crm shell, a Pacemaker command line interface.
Available commands:
cib manage shadow CIBs
resource resources management
configure CRM cluster configuration
node nodes management
options user preferences
history CRM cluster history
site Geo-cluster support
ra resource agents information center
status show cluster status
help,? show help (help topics for list of topics)
end,cd,up go back one level
quit,bye,exit exit the program
3.启动corosync（注，在配置corosync时，将pacemaker整合进corosync中，corosync启动的同时也会启动pacemaker）
[root@node1 ~]# ssh node2 "service corosync start"
Starting Corosync Cluster Engine (corosync): [确定]
[root@node1 ~]# service corosync start
Starting Corosync Cluster Engine (corosync): [确定]
4.查看启动信息
(1).查看corosync引擎是否正常启动
[root@node1 ~]# grep -e "Corosync Cluster Engine" -e "configuration file" /var/log/cluster/corosync.log
Aug 17 17:31:20 corosync [MAIN ] Corosync Cluster Engine ('1.4.1'): started and ready to provide service.
Aug 17 17:31:20 corosync [MAIN ] Successfully read main configuration file '/etc/corosync/corosync.conf'.
(2).查看初始化成员节点通知是否正常发出
[root@node1 ~]# grep TOTEM /var/log/cluster/corosync.log
Aug 17 17:31:20 corosync [TOTEM ] Initializing transport (UDP/IP Multicast).
Aug 17 17:31:20 corosync [TOTEM ] Initializing transmit/receive security: libtomcrypt SOBER128/SHA1HMAC (mode 0).
Aug 17 17:31:21 corosync [TOTEM ] The network interface [192.168.1.201] is now up.
Aug 17 17:31:21 corosync [TOTEM ] A processor joined or left the membership and a new membership was formed.
(3).检查启动过程中是否有错误产生
[root@node1 ~]# grep ERROR: /var/log/cluster/corosync.log
Aug 17 17:31:21 corosync [pcmk ] ERROR: process_ais_conf: You have configured a cluster using the Pacemaker plugin for Corosync. The plugin is not supported in this environment and will be removed very soon.
Aug 17 17:31:21 corosync [pcmk ] ERROR: process_ais_conf: Please see Chapter 8 of 'Clusters from Scratch' () for details on using Pacemaker with CMAN
(4).查看pacemaker是否正常启动
[root@node1 ~]# grep pcmk_startup /var/log/cluster/corosync.log
Aug 17 17:31:21 corosync [pcmk ] info: pcmk_startup: CRM: Initialized
Aug 17 17:31:21 corosync [pcmk ] Logging: Initialized pcmk_startup
Aug 17 17:31:21 corosync [pcmk ] info: pcmk_startup: Maximum core file size is: 18446744073709551615
Aug 17 17:31:21 corosync [pcmk ] info: pcmk_startup: Service: 9
Aug 17 17:31:21 corosync [pcmk ] info: pcmk_startup: Local hostname: node1.test.com
5.查看集群状态
[root@node1 ~]# crm status
Cannot change active directory to /var/lib/pacemaker/cores/root: No such file or directory (2)
Last updated: Sat Aug 17 17:36:24 2013
Last change: Sat Aug 17 17:31:33 2013 via crmd on node2.test.com
Stack: classic openais (with plugin)
Current DC: node2.test.com - partition with quorum
Version: 1.1.8-7.el6-394e906
2 Nodes configured, 2 expected votes
0 Resources configured.
Online: [ node1.test.com node2.test.com ]
注：node1与node2都在线，DC是node2，符合法定票数
五、DRBD 安装与配置（参考博文： ）
1.安装DRBD
node1:
[root@node1 ~]# yum -y install drbd84 kmod-drbd84
node2:
[root@node1 ~]# yum -y install drbd84 kmod-drbd84
2.配置DRBD
[root@node1 ~]# cat /etc/drbd.d/global_common.conf
global {
usage-count no; #让linbit公司收集目前drbd的使用情况，yes为参加，我们这里不参加设置为no
# minor-count dialog-refresh disable-ip-verification
}
common {
handlers {
pri-on-incon-degr "/usr/lib/drbd/notify-pri-on-incon-degr.sh; /usr/lib/drbd/notify-emergency-reboot.sh; echo b > /proc/sysrq-trigger ; reboot -f";
pri-lost-after-sb "/usr/lib/drbd/notify-pri-lost-after-sb.sh; /usr/lib/drbd/notify-emergency-reboot.sh; echo b > /proc/sysrq-trigger ; reboot -f";
local-io-error "/usr/lib/drbd/notify-io-error.sh; /usr/lib/drbd/notify-emergency-shutdown.sh; echo o > /proc/sysrq-trigger ; halt -f";
# fence-peer "/usr/lib/drbd/crm-fence-peer.sh";
# split-brain "/usr/lib/drbd/notify-split-brain.sh root";
# out-of-sync "/usr/lib/drbd/notify-out-of-sync.sh root";
# before-resync-target "/usr/lib/drbd/snapshot-resync-target-lvm.sh -p 15 -- -c 16k";
# after-resync-target /usr/lib/drbd/unsnapshot-resync-target-lvm.sh;
}
startup {
# wfc-timeout degr-wfc-timeout outdated-wfc-timeout wait-after-sb
}
options {
# cpu-mask on-no-data-accessible
}
disk {
# size max-bio-bvecs on-io-error fencing disk-barrier disk-flushes
# disk-drain md-flushes resync-rate resync-after al-extents
# c-plan-ahead c-delay-target c-fill-target c-max-rate
# c-min-rate disk-timeout
on-io-error detach; #同步错误的做法是分离
}
net {
# protocol timeout max-epoch-size max-buffers unplug-watermark
# connect-int ping-int sndbuf-size rcvbuf-size ko-count
# allow-two-primaries cram-hmac-alg shared-secret after-sb-0pri
# after-sb-1pri after-sb-2pri always-asbp rr-conflict
# ping-timeout data-integrity-alg tcp-cork on-congestion
# congestion-fill congestion-extents csums-alg verify-alg
# use-rle
cram-hmac-alg "sha1"; #设置加密算法sha1
shared-secret "mydrbdlab"; #设置加密key
}
}
3.增加资源
[root@node1 drbd.d]# cat web.res
resource web {
on node1.test.com {
device /dev/drbd0;
disk /dev/sdb;
address 192.168.1.201:7789;
meta-disk internal;
}
on node2.test.com {
device /dev/drbd0;
disk /dev/sdb;
address 192.168.1.202:7789;
meta-disk internal;
}
}
4.同步配置文件到node2’
[root@node1 drbd.d]# scp global_common.conf web.res node2:/etc/drbd.d/
5.node1与node2上初始化资源
node1:
[root@node1 ~]# drbdadm create-md web
Writing meta data...
initializing activity log
NOT initializing bitmap
New drbd meta data block successfully created.
node2:
[root@node2 ~]# drbdadm create-md web
Writing meta data...
initializing activity log
NOT initializing bitmap
New drbd meta data block successfully created.
6.启动DRBD
node1:
1 [root@node1 ~]# service drbd start
node2:
[root@node2 ~]# service drbd start
7.查看一下状态
node1:
[root@node1 ~]# drbd-overview
0:web/0Connected Secondary/SecondaryInconsistent/InconsistentC r-----
node2:
[root@node2 ~]# drbd-overview
0:web/0Connected Secondary/SecondaryInconsistent/InconsistentC r-----
8.设置node1为主节点
[root@node1 ~]# drbdadm -- --overwrite-data-of-peer primary web
[root@node1 ~]# drbd-overview
0:web/0 Connected Primary/Secondary UpToDate/UpToDate C r-----
9.格式化并挂载
[root@node1 ~]# mke2fs -j /dev/drbd
[root@node1 ~]# mkdir /drbd
[root@node1 ~]# mount /dev/drbd0 /drbd/
[root@node1 ~]# mount
/dev/sda2on / typeext4 (rw)
proc on /proctypeproc (rw)
sysfs on /systypesysfs (rw)
devpts on /dev/ptstypedevpts (rw,gid=5,mode=620)
tmpfs on /dev/shmtypetmpfs (rw)
/dev/sda1on /boottypeext4 (rw)
/dev/sda3on /datatypeext4 (rw)
none on /proc/sys/fs/binfmt_misctypebinfmt_misc (rw)
/dev/drbd0on /drbdtypeext3 (rw)
[root@node1 ~]# cd /drbd/
[root@node1 drbd]# cp /etc/inittab /drbd/
[root@node1 drbd]# ll
总用量 20
-rw-r--r-- 1 root root 884 8月 17 13:50 inittab
drwx------ 2 root root 16384 8月 17 13:49 lost+found
10.设置node2为主节点
[root@node1 ~]# umount /drbd/
[root@node1 ~]# drbdadm secondary web
[root@node1 ~]# drbd-overview
[root@node2 ~]# drbdadm primary web
[root@node2 ~]# drbd-overview
0:web/0Connected Primary/SecondaryUpToDate/UpToDateC r-----
[root@node2 ~]# mkdir /drbd
[root@node2 ~]# mount /dev/drbd0 /drbd/
[root@node2 ~]# ll /drbd/
总用量 20
-rw-r--r-- 1 root root 884 8月 17 13:50 inittab
drwx------ 2 root root 16384 8月 17 13:49 lost+found
好了，到这里DRBD配置全部完成，下面我们来配置MySQL