节点间主机名必须能解析
[root@controller1 ~]# cat /etc/hosts
192.168.17.149 controller1
192.168.17.141 controller2
192.168.17.166 controller3
192.168.17.111 demo.open-stack.cn
各节点间要互信，无密码能登录
[root@controller1 ~]# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
20:79:d4:a4:9f:8b:75:cf:12:58:f4:47:a4:c1:29:f3 root@controller1
The key's randomart image is:
+--[ RSA 2048]----+
| .o. ...oo |
| o ...o.o+ |
| o + .+o . |
| o o + E. |
| S o |
| o o + |
| . . . o |
| . |
| |
+-----------------+
[root@controller1 ~]# ssh-copy-id controller2
[root@controller1 ~]# ssh-copy-id controller3
配置YUM源
# vim /etc/yum.repos.d/ha-clustering.repo
[network_ha-clustering_Stable]
name=Stable High Availability/Clustering packages (CentOS-7)
type=rpm-md
baseurl=http://download.opensuse.org/repositories/network:/ha-clustering:/Stable/CentOS_CentOS-7/
gpgcheck=0
gpgkey=http://download.opensuse.org/repositories/network:/ha-clustering:/Stable/CentOS_CentOS-7/repodata/repomd.xml.key
enabled=1
这个YUM源可能会冲突，先enabled=0，如果剩下一个crmsh包，再enabled=1打开后安装
Corosync下载地址，目前最新版本2.4.2
http://build.clusterlabs.org/corosync/releases/
http://build.clusterlabs.org/corosync/releases/corosync-2.4.2.tar.gz
[root@controller1 ~]# ansible controller -m copy -a "src=/etc/yum.repos.d/ha-cluster.repo dest=/etc/yum.repos.d/"
安装软件包
# yum install pacemaker pcs resource-agents -y cifs-utils quota psmisc corosync fence-agents-all lvm2 resource-agents
# yum install crmsh -y
启动pcsd，并确认启动正常
# systemctl enable pcsd
# systemctl enable corosync
# systemctl start pcsd
# systemctl status pcsd
[root@controller2 ~]# pacemakerd -$
Pacemaker 1.1.15-11.el7_3.2
Written by Andrew Beekhof
[root@controller1 ~]# ansible controller -m command -a "pacemakerd -$"
修改hacluster密码
【all】# echo zoomtech | passwd --stdin hacluster
[root@controller1 ~]# ansible controller -m command -a "echo zoomtech | passwd --stdin hacluster"
# passwd hacluster
编辑corosync.conf
[root@controller3 ~]# vim /etc/corosync/corosync.conf
totem {
version: 2
secauth: off
cluster_name: openstack-cluster
transport: udpu
}
nodelist {
node {
ring0_addr: controller1
nodeid: 1
}
node {
ring0_addr: controller2
nodeid: 2
}
node {
ring0_addr: controller3
nodeid: 3
}
}
logging {
to_logfile: yes
logfile: /var/log/cluster/corosync.log
to_syslog: yes
}
quorum {
provider: corosync_votequorum
}
[root@controller1 ~]# scp /etc/corosync/corosync.conf controller2:/etc/corosync/
[root@controller1 ~]# scp /etc/corosync/corosync.conf controller3:/etc/corosync/
[root@controller1 corosync]# ansible controller -m copy -a "src=corosync.conf dest=/etc/corosync"
创建集群
使用pcs设置集群身份认证
[root@controller1 ~]# pcs cluster auth controller1 controller2 controller3 -u hacluster -p zoomtech --force
controller3: Authorized
controller2: Authorized
controller1: Authorized
现在我们创建一个集群并添加一些节点。注意,这个名字不能超过15个字符
[root@controller1 ~]# pcs cluster setup --force --name openstack-cluster controller1 controller2 controller3
Destroying cluster on nodes: controller1, controller2, controller3...
controller3: Stopping Cluster (pacemaker)...
controller2: Stopping Cluster (pacemaker)...
controller1: Stopping Cluster (pacemaker)...
controller2: Successfully destroyed cluster
controller1: Successfully destroyed cluster
controller3: Successfully destroyed cluster
Sending cluster config files to the nodes...
controller1: Succeeded
controller2: Succeeded
controller3: Succeeded
Synchronizing pcsd certificates on nodes controller1, controller2, controller3...
controller3: Success
controller2: Success
controller1: Success
Restarting pcsd on the nodes in order to reload the certificates...
controller3: Success
controller2: Success
controller1: Success
启动集群
[root@controller1 ~]# pcs cluster enable --all
controller1: Cluster Enabled
controller2: Cluster Enabled
controller3: Cluster Enabled
[root@controller1 ~]# pcs cluster start --all
controller2: Starting Cluster...
controller1: Starting Cluster...
controller3: Starting Cluster...
查看集群状态
[root@controller1 corosync]# ansible controller -m command -a "pcs cluster status"
[root@controller1 ~]# pcs cluster status
Cluster Status:
Stack: corosync
Current DC: controller3 (version 1.1.15-11.el7_3.2-e174ec8) - partition with quorum
Last updated: Fri Feb 17 10:39:38 2017 Last change: Fri Feb 17 10:39:29 2017 by hacluster via crmd on controller3
3 nodes and 0 resources configured
PCSD Status:
controller2: Online
controller3: Online
controller1: Online
[root@controller1 corosync]# ansible controller -m command -a "pcs status"
[root@controller1 ~]# pcs status
Cluster name: openstack-cluster
Stack: corosync
Current DC: controller2 (version 1.1.15-11.el7_3.2-e174ec8) - partition with quorum
Last updated: Thu Mar 2 17:07:34 2017 Last change: Thu Mar 2 01:44:44 2017 by root via cibadmin on controller1
3 nodes and 1 resource configured
Online: [ controller1 controller2 controller3 ]
Full list of resources:
vip (ocf::heartbeat:IPaddr2): Started controller2
Daemon Status:
corosync: active/enabled
pacemaker: active/enabled
pcsd: active/enabled
查看集群状态
[root@controller1 corosync]# ansible controller -m command -a "crm_mon -1"
[root@controller1 ~]# crm_mon -1
Stack: corosync
Current DC: controller2 (version 1.1.15-11.el7_3.2-e174ec8) - partition with quorum
Last updated: Wed Mar 1 17:54:04 2017 Last change: Wed Mar 1 17:44:38 2017 by root via cibadmin on controller1
3 nodes and 1 resource configured
Online: [ controller1 controller2 controller3 ]
Active resources:
vip (ocf::heartbeat:IPaddr2): Started controller1
查看pacemaker进程状态
[root@controller1 ~]# ps aux | grep pacemaker
root 75900 0.2 0.5 132632 9216 ? Ss 10:39 0:00 /usr/sbin/pacemaked -f
haclust+ 75901 0.3 0.8 135268 15376 ? Ss 10:39 0:00 /usr/libexec/pacemaker/cib
root 75902 0.1 0.4 135608 7920 ? Ss 10:39 0:00 /usr/libexec/pacemaker/stonithd
root 75903 0.0 0.2 105092 5020 ? Ss 10:39 0:00 /usr/libexec/pacemaker/lrmd
haclust+ 75904 0.0 0.4 126924 7636 ? Ss 10:39 0:00 /usr/libexec/pacemaker/attrd
haclust+ 75905 0.0 0.2 117040 4560 ? Ss 10:39 0:00 /usr/libexec/pacemaker/pengine
haclust+ 75906 0.1 0.5 145328 8988 ? Ss 10:39 0:00 /usr/libexec/pacemaker/crmd
root 75997 0.0 0.0 112648 948 pts/0 R+ 10:40 0:00 grep --color=auto pacemaker
查看集群状态
[root@controller1 ~]# corosync-cfgtool -s
Printing ring status.
Local node ID 1
RING ID 0
id = 192.168.17.132
status = ring 0 active with no faults
[root@controller2 corosync]# corosync-cfgtool -s
Printing ring status.
Local node ID 2
RING ID 0
id = 192.168.17.146
status = ring 0 active with no faults
[root@controller3 ~]# corosync-cfgtool -s
Printing ring status.
Local node ID 3
RING ID 0
id = 192.168.17.138
status = ring 0 active with no faults
[root@controller1 ~]# corosync-cmapctl | grep members
runtime.totem.pg.mrp.srp.members.1.config_version (u64) = 0
runtime.totem.pg.mrp.srp.members.1.ip (str) = r(0) ip(192.168.17.132)
runtime.totem.pg.mrp.srp.members.1.join_count (u32) = 1
runtime.totem.pg.mrp.srp.members.1.status (str) = joined
runtime.totem.pg.mrp.srp.members.2.config_version (u64) = 0
runtime.totem.pg.mrp.srp.members.2.ip (str) = r(0) ip(192.168.17.146)
runtime.totem.pg.mrp.srp.members.2.join_count (u32) = 1
runtime.totem.pg.mrp.srp.members.2.status (str) = joined
runtime.totem.pg.mrp.srp.members.3.config_version (u64) = 0
runtime.totem.pg.mrp.srp.members.3.ip (str) = r(0) ip(192.168.17.138)
runtime.totem.pg.mrp.srp.members.3.join_count (u32) = 1
runtime.totem.pg.mrp.srp.members.3.status (str) = joined
查看集群状态
[root@controller1 ~]# pcs status corosync
Membership information
----------------------
Nodeid Votes Name
1 1 controller1 (local)
3 1 controller3
2 1 controller2
[root@controller2 corosync]# pcs status corosync
Membership information
----------------------
Nodeid Votes Name
1 1 controller1
3 1 controller3
2 1 controller2 (local)
[root@controller3 ~]# pcs status corosync
Membership information
----------------------
Nodeid Votes Name
1 1 controller1
3 1 controller3 (local)
2 1 controller2
[root@controller1 ~]# crm_verify -L -V
error: unpack_resources: Resource start-up disabled since no STONITH resources have been defined
error: unpack_resources: Either configure some or disable STONITH with the stonith-enabled option
error: unpack_resources: NOTE: Clusters with shared data need STONITH to ensure data integrity
Errors found during check: config not valid
[root@controller1 ~]#
[root@controller1 ~]# pcs property set stonith-enabled=false
[root@controller1 ~]# pcs property set no-quorum-policy=ignore
[root@controller1 ~]# crm_verify -L -V
[root@controller1 corosync]# ansible controller -m command -a "pcs property set stonith-enabled=false
[root@controller1 corosync]# ansible controller -m command -a "pcs property set no-quorum-policy=ignore"
[root@controller1 corosync]# ansible controller -m command -a "crm_verify -L -V"
配置 VIP
[root@controller1 ~]# crm
crm(live)# configure
crm(live)configure# show
node 1: controller1
node 2: controller2
node 3: controller3
property cib-bootstrap-options: \
have-watchdog=false \
dc-version=1.1.15-11.el7_3.2-e174ec8 \
cluster-infrastructure=corosync \
cluster-name=openstack-cluster \
stonith-enabled=false \
no-quorum-policy=ignore
crm(live)configure# primitive vip ocf:heartbeat:IPaddr2 params ip=192.168.17.111 cidr_netmask=24 nic=ens37 op start interval=0s timeout=20s op stop interval=0s timeout=20s monitor interval=30s meta priority=100
crm(live)configure# show
node 1: controller1
node 2: controller2
node 3: controller3
primitive vip IPaddr2 \
params ip=192.168.17.111 cidr_netmask=24 nic=ens37 \
op start interval=0s timeout=20s \
op stop interval=30s timeout=20s monitor \
meta priority=100
property cib-bootstrap-options: \
have-watchdog=false \
dc-version=1.1.15-11.el7_3.2-e174ec8 \
cluster-infrastructure=corosync \
cluster-name=openstack-cluster \
stonith-enabled=false \
no-quorum-policy=ignore
crm(live)configure# commit
crm(live)configure# exit
查看VIP已绑定在ens37网卡上
[root@controller1 ~]# ip a
4: ens37: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:ff:8b:4b brd ff:ff:ff:ff:ff:ff
inet 192.168.17.141/24 brd 192.168.17.255 scope global dynamic ens37
valid_lft 2388741sec preferred_lft 2388741sec
inet 192.168.17.111/24 brd 192.168.17.255 scope global secondary ens37
valid_lft forever preferred_lft forever
上面指定的网卡名称3个节点必须是同一个名称，否则飘移会出现问题，切换不过去
[root@controller1 ~]# crm status
Stack: corosync
Current DC: controller1 (version 1.1.15-11.el7_3.2-e174ec8) - partition with quorum
Last updated: Wed Feb 22 11:42:07 2017 Last change: Wed Feb 22 11:22:56 2017 by root via cibadmin on controller1
3 nodes and 1 resource configured
Online: [ controller1 controller2 controller3 ]
Full list of resources:
vip (ocf::heartbeat:IPaddr2): Started controller1
查看corosync引擎是否正常启动
[root@controller1 ~]# grep -e "Corosync Cluster Engine" -e "configuration file" /var/log/cluster/corosync.log
[51405] controller1 corosyncnotice [MAIN ] Corosync Cluster Engine ('2.4.0'): started and ready to provide service.
Mar 01 17:35:20 [51425] controller1 cib: info: retrieveCib: Reading cluster configuration file /var/lib/pacemaker/cib/cib.xml (digest: /var/lib/pacemaker/cib/cib.xml.sig)
Mar 01 17:35:20 [51425] controller1 cib: warning: cib_file_read_and_verify: Could not verify cluster configuration file /var/lib/pacemaker/cib/cib.xml: No such file or directory (2)
Mar 01 17:35:20 [51425] controller1 cib: warning: cib_file_read_and_verify: Could not verify cluster configuration file /var/lib/pacemaker/cib/cib.xml: No such file or directory (2)
Mar 01 17:35:20 [51425] controller1 cib: info: cib_file_write_with_digest: Reading cluster configuration file /var/lib/pacemaker/cib/cib.Apziws (digest: /var/lib/pacemaker/cib/cib.0ZxsVW)
Mar 01 17:35:21 [51425] controller1 cib: info: cib_file_write_with_digest: Reading cluster configuration file /var/lib/pacemaker/cib/cib.ObYehI (digest: /var/lib/pacemaker/cib/cib.O8Rntg)
Mar 01 17:35:42 [51425] controller1 cib: info: cib_file_write_with_digest: Reading cluster configuration file /var/lib/pacemaker/cib/cib.eqrhsF (digest: /var/lib/pacemaker/cib/cib.6BCfNj)
Mar 01 17:35:42 [51425] controller1 cib: info: cib_file_write_with_digest: Reading cluster configuration file /var/lib/pacemaker/cib/cib.riot2E (digest: /var/lib/pacemaker/cib/cib.SAqtzj)
Mar 01 17:35:42 [51425] controller1 cib: info: cib_file_write_with_digest: Reading cluster configuration file /var/lib/pacemaker/cib/cib.Q8H9BL (digest: /var/lib/pacemaker/cib/cib.MBljlq)
Mar 01 17:38:29 [51425] controller1 cib: info: cib_file_write_with_digest: Reading cluster configuration file /var/lib/pacemaker/cib/cib.OTIiU4 (digest: /var/lib/pacemaker/cib/cib.JnHr1v)
Mar 01 17:38:36 [51425] controller1 cib: info: cib_file_write_with_digest: Reading cluster configuration file /var/lib/pacemaker/cib/cib.2cK9Yk (digest: /var/lib/pacemaker/cib/cib.JSqEH8)
Mar 01 17:44:38 [51425] controller1 cib: info: cib_file_write_with_digest: Reading cluster configuration file /var/lib/pacemaker/cib/cib.aPFtr3 (digest: /var/lib/pacemaker/cib/cib.E3Ve7X)
[root@controller1 ~]#
查看初始化成员节点通知是否正常发出
[root@controller1 ~]# grep TOTEM /var/log/cluster/corosync.log
[51405] controller1 corosyncnotice [TOTEM ] Initializing transport (UDP/IP Unicast).
[51405] controller1 corosyncnotice [TOTEM ] Initializing transmit/receive security (NSS) crypto: none hash: none
[51405] controller1 corosyncnotice [TOTEM ] The network interface [192.168.17.149] is now up.
[51405] controller1 corosyncnotice [TOTEM ] adding new UDPU member {192.168.17.149}
[51405] controller1 corosyncnotice [TOTEM ] adding new UDPU member {192.168.17.141}
[51405] controller1 corosyncnotice [TOTEM ] adding new UDPU member {192.168.17.166}
[51405] controller1 corosyncnotice [TOTEM ] A new membership (192.168.17.149:4) was formed. Members joined: 1
[51405] controller1 corosyncnotice [TOTEM ] A new membership (192.168.17.141:12) was formed. Members joined: 2 3
检查启动过程中是否有错误产生
[root@controller1 ~]# grep ERROR: /var/log/cluster/corosync.log
本文转自 OpenStack2015 51CTO博客，原文链接：http://blog.51cto.com/andyliu/1917391，如需转载请自行联系原作者
