【www.bbyears.com--php应用】
一、名词解释Corosync：它属于OpenAIS(开放式应用接口规范)中的一个项目corosync一版本中本身不具 备投票功能，到了corosync 2.0之后引入了votequorum子系统也具备了投票功能了，如果我们用的是1版本的，又需要用到票数做决策时那该如何是好呢；当然，在红帽上把 cman + corosync结合起来用，但是早期cman跟pacemaker没法结合起来，如果想用pacemaker又想用投票功能的话，那就把cman当成 corosync的插件来用，把cman当成corodync的投票功能，当然，这里结合了两个了Messaging Lader；Corosync目前有两个主流的版本：一个是2系列的，另一个是1系列的稳定版；2版本和1版本差别很大，1版本不具有投票功能，2版本之 后引入了votequorum后支持投票功能了；OpenAIS自从诞生之后，红帽就基于这个规范研发了一个高可用集群的解决方案叫cman，并为cman提供了rgmangaer作为资源管理器，并且容合conga全生命周期的管理接口形成了RHCS；
Conrosync是从OpenAIS这个大项目中分支出来的一个项目，而Pacemaker是heartbeat v3版本中分裂出来专门用于提供高可用集群CRM的组件，功能十分强大， Coreosync在传递信息的时候可以通过一个简单的配置文件来定义信息传递的方式和协议等，Corosync可以提供一个完整的HA功 能，Corosync是未来的发展方向，在以后的新项目里，一般采用Corosync，而heartbeat_gui可以提供很好的HA管理功能，可以实 现图形化的管理。
Pacemaker是一个集群管理器。它利用首选集群基础设施（OpenAIS 或heartbeat）提供的消息和成员能力，由辅助节点和系统进行故障检测和回收，实现性群集服务（亦称资源）的高可用性。
DRBD：DRBD (Distributed Replicated Block Device) 是 Linux 平台上的分散式储存系统。其中包含了核心模组，数个使用者空间管理程式及 shell scripts，通常用于高可用性（high availability, HA）丛集。DRBD 类似磁盘阵列的RAID 1（镜像），只不过 RAID 1 是在同一台电脑内，而 DRBD 是透过网络。
二、环境准备
(由于实验的时候，在最后资源定义的时候出了点错，导致测试机全部重新系统了，博文有些地方可能文字记录和截图有不符的地方，请以文字或者代码记录为准)
1、操作系统 & IP
CentOS 6.6 x86_64
node1 172.16.6.100 Legion100.dwhd.org
node2 172.16.6.101 Legion101.dwhd.org
vip 172.16.7.200
2、软件版本
corosync-1.4.7-1.el6.x86_64
crmsh-2.1-1.6.x86_64
pacemaker-1.1.12+git20140723.483f48a-1.1.x86_64
drbd84-utils-8.9.2-1.el6.elrepo.x86_64
kmod-drbd84-8.4.6-1.el6.elrepo.x86_64
mariadb-10.0.19
3、配置node1 node2时间同步、ssh互相、主机名互解
[root@Legion100 ~]# echo "172.16.6.100 Legion100.dwhd.org Legion100 node1" >> /etc/hosts [root@Legion100 ~]# echo "172.16.6.101 Legion101.dwhd.org Legion101 node2" >> /etc/hosts [root@Legion100 ~]# echo "*/5 * * * * /usr/sbin/ntpdate pool.ntp.org >/dev/null 2>&1" >> /var/spool/cron/root [root@Legion100 ~]# ssh-keygen -t rsa -f ~/.ssh/id_rsa -P \"\" Generating public/private rsa key pair. 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: 4f:b8:f6:ab:5b:17:d0:61:f2:09:a9:0a:f1:d7:39:84 root@Legion100.dwhd.org The key\"s randomart image is: +--[ RSA 2048]----+ | .o.o | | . E o* o | | o +..+ | | . . o.+. | | . oS ... | | . + . | | o o . | | . o . | | ooo. | +-----------------+ [root@Legion100 ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub root@Legion101.dwhd.org The authenticity of host \"Legion101.dwhd.org (172.16.6.101)\" can\"t be established. RSA key fingerprint is e9:95:aa:7f:39:5b:52:a7:9b:5e:fe:98:19:82:14:e3. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added \"Legion101.dwhd.org,172.16.6.101\" (RSA) to the list of known hosts. root@Legion101.dwhd.org\"s password: Now try logging into the machine, with "ssh \"root@Legion101.dwhd.org\"", and check in: .ssh/authorized_keys to make sure we haven\"t added extra keys that you weren\"t expecting. [root@Legion100 ~]#
[root@Legion101 ~]# echo "172.16.6.101 Legion101.dwhd.org Legion101 node2" >> /etc/hosts [root@Legion101 ~]# echo "172.16.6.100 Legion100.dwhd.org Legion100 node1" >> /etc/hosts [root@Legion101 ~]# echo "*/5 * * * * /usr/sbin/ntpdate pool.ntp.org >/dev/null 2>&1" >> /var/spool/cron/root [root@Legion101 ~]# ssh-keygen -t rsa -f ~/.ssh/id_rsa -P \"\" Generating public/private rsa key pair. 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: c0:51:c6:23:c9:ed:04:d9:58:22:47:f0:1b:19:af:cd root@Legion101.dwhd.org The key\"s randomart image is: +--[ RSA 2048]----+ | o+B@+ | | =*B* | | *+.. | | B. | | o E | | | | | | | | | +-----------------+ [root@Legion101 ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub root@Legion100.dwhd.org The authenticity of host \"Legion100.dwhd.org (172.16.6.100)\" can\"t be established. RSA key fingerprint is 90:26:f4:28:31:04:03:6c:9f:ec:e4:09:04:32:92:ee. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added \"Legion100.dwhd.org,172.16.6.100\" (RSA) to the list of known hosts. root@Legion100.dwhd.org\"s password: Now try logging into the machine, with "ssh \"root@Legion100.dwhd.org\"", and check in: .ssh/authorized_keys to make sure we haven\"t added extra keys that you weren\"t expecting. [root@Legion101 ~]#
三、高可用环境搭建
1、Corosync 安装与配置
1)、node1
[root@Legion100 ~]# yum install corosync pacemaker python-dateutil python-lxml pssh -y [root@Legion100 ~]# cd /etc/corosync/ [root@Legion100 /etc/corosync]# ls corosync.conf.example corosync.conf.example.udpu service.d uidgid.d [root@Legion100 /etc/corosync]# cp -a corosync.conf.example corosync.conf [root@Legion100 /etc/corosync]# grep -Ev \"^(\\s+)?#|^$\" corosync.conf #参考配置 compatibility: whitetank totem { version: 2 secauth: on threads: 0 interface { ringnumber: 0 bindnetaddr: 172.16.0.0 mcastaddr: 225.172.16.6 mcastport: 5405 ttl: 1 } } logging { fileline: off to_stderr: no to_logfile: yes logfile: /var/log/cluster/corosync.log to_syslog: no debug: off timestamp: on logger_subsys { subsys: AMF debug: off } } amf { mode: disabled } service { ver: 0 name: pacemaker } aisexec { user: root group: root } [root@Legion100 /etc/corosync]# corosync-keygen #生成密匙文件 Corosync Cluster Engine Authentication key generator. Gathering 1024 bits for key from /dev/random. Press keys on your keyboard to generate entropy. Writing corosync key to /etc/corosync/authkey. [root@Legion100 /etc/corosync]# ls -l /etc/corosync/ 总用量 24 -r-------- 1 root root 128 5月 30 01:43 authkey -rw-r--r-- 1 root root 2869 5月 30 01:42 corosync.conf -rw-r--r-- 1 root root 2663 10月 15 2014 corosync.conf.example -rw-r--r-- 1 root root 1073 10月 15 2014 corosync.conf.example.udpu drwxr-xr-x 2 root root 4096 10月 15 2014 service.d drwxr-xr-x 2 root root 4096 10月 15 2014 uidgid.d [root@Legion100 /etc/corosync]# file /etc/corosync/authkey /etc/corosync/authkey: data [root@Legion100 /etc/corosync]#
2)、node2
[root@Legion101 ~]# yum install corosync pacemaker python-dateutil python-lxml pssh -y [root@Legion101 ~]# scp Legion100:/etc/corosync/{corosync.conf,authkey} /etc/corosync/ The authenticity of host \"Legion100 (172.16.6.100)\" can\"t be established. RSA key fingerprint is fd:ed:c3:bf:ed:3a:62:d3:73:18:9c:b6:3b:b8:37:f4. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added \"Legion100\" (RSA) to the list of known hosts. corosync.conf 100% 702 0.7KB/s 00:00 authkey 100% 128 0.1KB/s 00:00 [root@Legion101 ~]#
2、安装crmsh
crmsh下载地址：
http://download.opensuse.org/repositories/network:/ha-clustering:/Stable/ 请用自己对应的版本
1)、node1
[root@Legion100 ~]# wget http://www.dwhd.org/wp-content/uploads/2015/05/crmsh-2.1-1.6.x86_64.rpm [root@Legion100 ~]# yum install crmsh-2.1-1.6.x86_64.rpm [root@Legion100 ~]# crm crm(live)# help ^OHelp overview for crmsh ^O Available topics: Overview^O Available help topics and commands Topics^O Available help topics Description^O Program description CommandLine^O Command line options Introduction^O User interface Introcution^O Tab completion Features^O Syntax: Attribute references Reference^O Command reference Available commands: cd^O Navigate the level structure help^O Show help (help topics for list of topics) ls^O List levels and commands quit^O Exit the interactive shell report^O Create cluster status report status^O Cluster status up^O Go back to previous level cib^O/ CIB shadow management commit^O Copy a shadow CIB to the cluster delete^O Delete a shadow CIB diff^O Diff between the shadow CIB and the live CIB import^O Import a CIB or PE input file to a shadow crm(live)# quit bye [root@Legion100 ~]#
crmsh-2.1-1.6.x86_64
2)、node2
[root@Legion101 ~]# cd [root@Legion101 ~]# wget http://www.dwhd.org/wp-content/uploads/2015/05/crmsh-2.1-1.6.x86_64.rpm [root@Legion101 ~]# yum install crmsh-2.1-1.6.x86_64.rpm [root@Legion101 ~]# crm crm(live)# help ^OHelp overview for crmsh ^O Available topics: Overview^O Available help topics and commands Topics^O Available help topics Description^O Program description CommandLine^O Command line options Introduction^O User interface Introcution^O Tab completion Features^O Syntax: Attribute references Reference^O Command reference Available commands: cd^O Navigate the level structure help^O Show help (help topics for list of topics) ls^O List levels and commands quit^O Exit the interactive shell report^O Create cluster status report status^O Cluster status up^O Go back to previous level cib^O/ CIB shadow management commit^O Copy a shadow CIB to the cluster delete^O Delete a shadow CIB diff^O Diff between the shadow CIB and the live CIB crm(live)# quit bye [root@Legion101 ~]#
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@Legion100 ~]# service corosync start Starting Corosync Cluster Engine (corosync): [确定] [root@Legion100 ~]# ssh 172.16.6.101 "service corosync start" Starting Corosync Cluster Engine (corosync): [确定] [root@Legion100 ~]#
4、查看启动信息
1)、查看corosync引擎是否正常启动
[root@Legion100 ~]# grep -E "Corosync Cluster Engine|configuration file" /var/log/cluster/corosync.log May 30 02:43:22 corosync [MAIN ] Corosync Cluster Engine (\"1.4.7\"): started and ready to provide service. May 30 02:43:22 corosync [MAIN ] Successfully read main configuration file \"/etc/corosync/corosync.conf\". [root@Legion100 ~]# ssh root@172.16.6.101 "grep -E \"Corosync Cluster Engine|configuration file\" /var/log/cluster/corosync.log" May 30 02:43:44 corosync [MAIN ] Corosync Cluster Engine (\"1.4.7\"): started and ready to provide service. May 30 02:43:44 corosync [MAIN ] Successfully read main configuration file \"/etc/corosync/corosync.conf\". [root@Legion100 ~]#
2)、查看初始化成员节点通知是否正常发出
[root@Legion100 ~]# grep \"TOTEM\" /var/log/cluster/corosync.log May 30 02:43:22 corosync [TOTEM ] Initializing transport (UDP/IP Multicast). May 30 02:43:22 corosync [TOTEM ] Initializing transmit/receive security: libtomcrypt SOBER128/SHA1HMAC (mode 0). May 30 02:43:22 corosync [TOTEM ] The network interface [172.16.6.100] is now up. May 30 02:43:22 corosync [TOTEM ] A processor joined or left the membership and a new membership was formed. May 30 02:43:44 corosync [TOTEM ] A processor joined or left the membership and a new membership was formed. [root@Legion100 ~]# ssh root@172.16.6.101 "grep \"TOTEM\" /var/log/cluster/corosync.log" May 30 02:43:44 corosync [TOTEM ] Initializing transport (UDP/IP Multicast). May 30 02:43:44 corosync [TOTEM ] Initializing transmit/receive security: libtomcrypt SOBER128/SHA1HMAC (mode 0). May 30 02:43:44 corosync [TOTEM ] The network interface [172.16.6.101] is now up. May 30 02:43:44 corosync [TOTEM ] A processor joined or left the membership and a new membership was formed. May 30 02:43:44 corosync [TOTEM ] A processor joined or left the membership and a new membership was formed. [root@Legion100 ~]#
3)、检查启动过程中是否有错误产生
[root@Legion100 ~]# grep \"ERROR:\" /var/log/cluster/corosync.log [root@Legion100 ~]# ssh root@172.16.6.101 "grep \"ERROR:\" /var/log/cluster/corosync.log"
4)、查看pacemaker是否正常启动
[root@Legion100 ~]# grep \"pcmk_startup\" /var/log/cluster/corosync.log May 30 02:43:22 corosync [pcmk ] info: pcmk_startup: CRM: Initialized May 30 02:43:22 corosync [pcmk ] Logging: Initialized pcmk_startup May 30 02:43:22 corosync [pcmk ] info: pcmk_startup: Maximum core file size is: 18446744073709551615 May 30 02:43:22 corosync [pcmk ] info: pcmk_startup: Service: 9 May 30 02:43:22 corosync [pcmk ] info: pcmk_startup: Local hostname: Legion100.dwhd.org [root@Legion100 ~]# ssh root@172.16.6.101 "grep \"pcmk_startup\" /var/log/cluster/corosync.log" May 30 02:43:44 corosync [pcmk ] info: pcmk_startup: CRM: Initialized May 30 02:43:44 corosync [pcmk ] Logging: Initialized pcmk_startup May 30 02:43:44 corosync [pcmk ] info: pcmk_startup: Maximum core file size is: 18446744073709551615 May 30 02:43:44 corosync [pcmk ] info: pcmk_startup: Service: 9 May 30 02:43:44 corosync [pcmk ] info: pcmk_startup: Local hostname: Legion101.dwhd.org [root@Legion100 ~]#
5、查看集群状态
[root@Legion100 ~]# crm status Last updated: Sat May 30 03:00:41 2015 Last change: Sat May 30 02:44:06 2015 Stack: classic openais (with plugin) Current DC: Legion100.dwhd.org - partition with quorum Version: 1.1.12-1.1.12+git20140723.483f48a 2 Nodes configured, 2 expected votes 0 Resources configured Online: [ Legion100.dwhd.org Legion101.dwhd.org ] [root@Legion100 ~]#
四、DRBD 安装与配置
1安装DRBD
1)、node1
[root@Legion100 ~]# rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org [root@Legion100 ~]# rpm -Uvh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm [root@Legion100 ~]# yum install drbd84 kmod-drbd84 -y [root@Legion100 ~]# chkconfig --add drbd [root@Legion100 ~]# chkconfig drbd on [root@Legion100 ~]# chkconfig --list drbd drbd 0:关闭 1:关闭 2:启用 3:启用 4:启用 5:启用 6:关闭 [root@Legion100 ~]#
2)、node2
[root@Legion101 ~]# rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org [root@Legion101 ~]# rpm -Uvh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm [root@Legion101 ~]# yum install drbd84 kmod-drbd84 -y [root@Legion101 ~]# chkconfig drbd on [root@Legion101 ~]# chkconfig --list drbd drbd 0:关闭 1:关闭 2:启用 3:启用 4:启用 5:启用 6:关闭 [root@Legion101 ~]#
2、配置DRBD
[root@Legion101 /tmp]# cd /etc/drbd.d/ [root@Legion101 /etc/drbd.d]# grep -Ev \"^(\\s+)?#|^$\" global_common.conf global { usage-count yes; #让linbit公司收集目前drbd的使用情况，yes为参加 } 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"; } startup { } options { } disk { on-io-error detach; #同步错误的做法是分离 } net { cram-hmac-alg "sha1"; #设置加密算法sha1 shared-secret "YzYxMDc1ZGYxYWU4"; #设置加密key } } [root@Legion101 /etc/drbd.d]#
3、添加资源&同步配置
[root@Legion101 /etc/drbd.d]# cat mariadb.res resource mariadb { on Legion100.dwhd.org { device /dev/drbd0; disk /dev/sdb1; address 172.16.6.100:7789; meta-disk internal; } on Legion101.dwhd.org { device /dev/drbd0; disk /dev/sdb1; address 172.16.6.101:7789; meta-disk internal; } } [root@Legion101 /etc/drbd/drbd.d]# scp global_common.conf mariadb.res node1:/etc/drbd.d/ global_common.conf 100% 2461 2.4KB/s 00:00 mariadb.res 100% 282 0.3KB/s 00:00 [root@Legion101 /etc/drbd/drbd.d]#
4、初始化node1和node2上的资源
[root@Legion100 /tmp/drbd-8.4.3/drbd]# drbdadm create-md mariadb You want me to create a v08 style flexible-size internal meta data block. There appears to be a v08 flexible-size internal meta data block already in place on /dev/sdb at byte offset 64424505344 Do you really want to overwrite the existing v08 meta-data? [need to type \"yes\" to confirm] yes Writing meta data... md_offset 64424505344 al_offset 64424472576 bm_offset 64422506496 Found some data ==> This might destroy existing data! <== Do you want to proceed? [need to type \"yes\" to confirm] yes initializing activity log NOT initializing bitmap New drbd meta data block successfully created. success [root@Legion100 /tmp/drbd-8.4.3/drbd]#
[root@Legion101 /etc/drbd/drbd.d]# drbdadm create-md mariadb You want me to create a v08 style flexible-size internal meta data block. There appears to be a v08 flexible-size internal meta data block already in place on /dev/sdb at byte offset 64424505344 Do you really want to overwrite the existing v08 meta-data? [need to type \"yes\" to confirm] yes Writing meta data... md_offset 64424505344 al_offset 64424472576 bm_offset 64422506496 Found some data ==> This might destroy existing data! <== Do you want to proceed? [need to type \"yes\" to confirm] yes initializing activity log NOT initializing bitmap New drbd meta data block successfully created. success [root@Legion101 /etc/drbd/drbd.d]#
5、启动DRBD
[root@Legion100 /tmp/drbd-8.4.3/drbd]# /etc/init.d/drbd start Starting DRBD resources: [ create res: mariadb prepare disk: mariadb adjust disk: mariadb adjust net: mariadb ] .......... *************************************************************** DRBD\"s startup script waits for the peer node(s) to appear. - In case this node was already a degraded cluster before the reboot the timeout is 0 seconds. [degr-wfc-timeout] - If the peer was available before the reboot the timeout will expire after 0 seconds. [wfc-timeout] (These values are for resource \"mariadb\"; 0 sec -> wait forever) To abort waiting enter \"yes\" [ 14]: yes . [root@Legion100 /tmp/drbd-8.4.3/drbd]#
[root@Legion101 /etc/drbd/drbd.d]# /etc/init.d/drbd start Starting DRBD resources: [ create res: mariadb prepare disk: mariadb adjust disk: mariadb adjust net: mariadb ] . [root@Legion101 /etc/drbd/drbd.d]#
6、查看drbd状态
[root@Legion100 ~]# drbd-overview 0:mariadb/0 Connected Secondary/Secondary Inconsistent/Inconsistent C r----- [root@Legion100 ~]# ssh root@172.16.6.101 "drbd-overview" 0:mariadb/0 Connected Secondary/Secondary Inconsistent/Inconsistent C r----- [root@Legion100 ~]#
7、设置node1为主节点
[root@Legion100 ~]# drbdadm -- --overwrite-data-of-peer primary mariadb [root@Legion100 ~]# drbd-overview 0:mariadb/0 SyncSource Primary/Secondary UpToDate/Inconsistent C r----- [>....................] sync\"ed: 0.2% (61364/61436)M [root@Legion100 ~]# ssh root@172.16.6.101 "drbd-overview" 0:mariadb/0 SyncTarget Secondary/Primary Inconsistent/UpToDate C r----- [>....................] sync\"ed: 0.4% (61212/61436)M [root@Legion100 ~]# cat /proc/drbd version: 8.4.3 (api:1/proto:86-101) GIT-hash: 89a294209144b68adb3ee85a73221f964d3ee515 build by root@Legion100.dwhd.org, 2015-05-30 03:06:56 0: cs:SyncSource ro:Primary/Secondary ds:UpToDate/Inconsistent C r---n- ns:1750940 nr:0 dw:0 dr:1754784 al:0 bm:106 lo:0 pe:2 ua:4 ap:0 ep:1 wo:f oos:61163612 [>....................] sync\"ed: 2.8% (59728/61436)M finish: 0:16:11 speed: 62,976 (54,656) K/sec [root@Legion100 ~]# drbdadm role mariadb Primary/Secondary [root@Legion100 ~]#
8、格式化并挂载
当下图的进度跑完就可以了，切记
[root@Legion100 ~]# mke2fs -t ext4 -L drbdMariaDB /dev/drbd0 [root@Legion100 ~]# mkdir /data [root@Legion100 ~]# mount /dev/drbd0 /data/ [root@Legion100 ~]# mount /dev/mapper/vgzhongH-root on / type ext4 (rw,acl) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts (rw,gid=5,mode=620) tmpfs on /dev/shm type tmpfs (rw) /dev/sda1 on /boot type ext4 (rw) /dev/mapper/vgzhongH-data on /data type ext4 (rw,acl) none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw) /dev/drbd0 on /data type ext4 (rw) [root@Legion100 ~]# df -hP Filesystem Size Used Avail Use% Mounted on /dev/mapper/vgzhongH-root 30G 3.4G 25G 13% / tmpfs 932M 37M 895M 4% /dev/shm /dev/sda1 477M 34M 418M 8% /boot /dev/mapper/vgzhongH-data 59G 52M 56G 1% /data /dev/drbd0 59G 52M 56G 1% /data [root@Legion100 ~]#
五、安装数据库MariaDB
1、node1
[root@Legion100 ~]# groupadd -g 1500 mysql && useradd -g mysql -u 1500 -s /sbin/nologin -M mysql [root@Legion100 ~]# cd /tmp/ && wget http://www.dwhd.org/wp-content/uploads/2015/05/cmake-3.2.2.tar.gz [root@Legion101 /tmp]# tar xf cmake-3.2.2.tar.gz [root@Legion100 /tmp]# cd cmake-3.2.2 [root@Legion100 /tmp/cmake-3.2.2]# ./bootstrap [root@Legion100 /tmp/cmake-3.2.2]# [ "$?" = "0" ] && make && make install && which cmake && cd ../ /usr/local/bin/cmake [root@Legion100 /tmp]# wget "https://downloads.mariadb.org/interstitial/mariadb-10.0.19/source/mariadb-10.0.19.tar.gz/from/http%3A//mirrors.opencas.cn/mariadb" -O mariadb-10.0.19.tar.gz [root@Legion100 /tmp]# tar xf mariadb-10.0.19.tar.gz [root@Legion100 /tmp]# cd mariadb-10.0.19 [root@Legion100 /tmp/mariadb-10.0.19]# cmake . -DCMAKE_INSTALL_PREFIX=/usr/local/mysql \\ -DMYSQL_DATADIR=/data/mysql \\ -DWITH_SSL=system \\ -DWITH_INNOBASE_STORAGE_ENGINE=1 \\ -DWITH_ARCHIVE_STORAGE_ENGINE=1 \\ -DWITH_BLACKHOLE_STORAGE_ENGINE=1 \\ -DWITH_SPHINX_STORAGE_ENGINE=1 \\ -DWITH_ARIA_STORAGE_ENGINE=1 \\ -DWITH_XTRADB_STORAGE_ENGINE=1 \\ -DWITH_PARTITION_STORAGE_ENGINE=1 \\ -DWITH_FEDERATEDX_STORAGE_ENGINE=1 \\ -DWITH_MYISAM_STORAGE_ENGINE=1 \\ -DWITH_PERFSCHEMA_STORAGE_ENGINE=1 \\ -DWITH_EXTRA_CHARSETS=all \\ -DWITH_EMBEDDED_SERVER=1 \\ -DWITH_READLINE=1 \\ -DWITH_ZLIB=system \\ -DWITH_LIBWRAP=0 \\ -DEXTRA_CHARSETS=all \\ -DENABLED_LOCAL_INFILE=1 \\ -DMYSQL_UNIX_ADDR=/tmp/mysql.sock \\ -DDEFAULT_CHARSET=utf8 \\ -DDEFAULT_COLLATION=utf8_general_ci [root@Legion100 /tmp/mariadb-10.0.19]# make -j $(awk \"/processor/{i++}END{print i}\" /proc/cpuinfo) && make install && echo $? [root@Legion100 /tmp/mariadb-10.0.19]# cd /usr/local/mysql/ [root@Legion100 /usr/local/mysql]# echo "export PATH=/usr/local/mysql/bin:\\$PATH" > /etc/profile.d/mariadb10.0.19.sh [root@Legion100 /usr/local/mysql]# . /etc/profile.d/mariadb10.0.19.sh [root@Legion100 /usr/local/mysql]# cp -a support-files/mysql.server /etc/rc.d/init.d/mysqld [root@Legion100 /usr/local/mysql]# \\cp support-files/my-large.cnf /etc/my.cnf [root@Legion100 /usr/local/mysql]# sed -i \"/query_cache_size/a datadir = /data/mysql\" /etc/my.cnf [root@Legion100 /usr/local/mysql]# mkdir -p /data/mysql [root@Legion100 /usr/local/mysql]# chown -R mysql.mysql /data/mysql [root@Legion100 /usr/local/mysql]# /usr/local/mysql/scripts/mysql_install_db --user=mysql --datadir=/data/mysql/ --basedir=/usr/local/mysql [root@Legion100 /usr/local/mysql]# scp /etc/rc.d/init.d/mysqld 172.16.6.101:/etc/rc.d/init.d/mysqld mysqld 100% 12KB 11.9KB/s 00:00 [root@Legion100 /usr/local/mysql]# scp /etc/my.cnf 172.16.6.101:/etc/ my.cnf 100% 4903 4.8KB/s 00:00 [root@Legion100 /usr/local/mysql]# scp /tmp/{cmake-3.2.2.tar.gz,mariadb-10.0.19.tar.gz} 172.16.6.101:/tmp cmake-3.2.2.tar.gz 100% 6288KB 6.1MB/s 00:00 mariadb-10.0.19.tar.gz 100% 54MB 53.6MB/s 00:01 [root@Legion100 /usr/local/mysql]#
2、node2
[root@Legion101 /etc/drbd/drbd.d]# groupadd -g 1500 mysql && useradd -g mysql -u 1500 -s /sbin/nologin -M mysql [root@Legion101 /etc/drbd/drbd.d]# cd /tmp/ [root@Legion101 /tmp]# tar xf cmake-3.2.2.tar.gz [root@Legion101 /tmp]# cd cmake-3.2.2 [root@Legion101 /tmp/cmake-3.2.2]# ./bootstrap [root@Legion101 /tmp/cmake-3.2.2]# [ "$?" = "0" ] && make && make install && which cmake && cd ../ [root@Legion101 /tmp]# tar xf mariadb-10.0.19.tar.gz [root@Legion101 /tmp]# cd mariadb-10.0.19 [root@Legion101 /tmp/mariadb-10.0.19]# cmake . -DCMAKE_INSTALL_PREFIX=/usr/local/mysql \\ -DMYSQL_DATADIR=/data/mysql \\ -DWITH_SSL=system \\ -DWITH_INNOBASE_STORAGE_ENGINE=1 \\ -DWITH_ARCHIVE_STORAGE_ENGINE=1 \\ -DWITH_BLACKHOLE_STORAGE_ENGINE=1 \\ -DWITH_SPHINX_STORAGE_ENGINE=1 \\ -DWITH_ARIA_STORAGE_ENGINE=1 \\ -DWITH_XTRADB_STORAGE_ENGINE=1 \\ -DWITH_PARTITION_STORAGE_ENGINE=1 \\ -DWITH_FEDERATEDX_STORAGE_ENGINE=1 \\ -DWITH_MYISAM_STORAGE_ENGINE=1 \\ -DWITH_PERFSCHEMA_STORAGE_ENGINE=1 \\ -DWITH_EXTRA_CHARSETS=all \\ -DWITH_EMBEDDED_SERVER=1 \\ -DWITH_READLINE=1 \\ -DWITH_ZLIB=system \\ -DWITH_LIBWRAP=0 \\ -DEXTRA_CHARSETS=all \\ -DENABLED_LOCAL_INFILE=1 \\ -DMYSQL_UNIX_ADDR=/tmp/mysql.sock \\ -DDEFAULT_CHARSET=utf8 \\ -DDEFAULT_COLLATION=utf8_general_ci [root@Legion101 /tmp/mariadb-10.0.19]# make -j $(awk \"/processor/{i++}END{print i}\" /proc/cpuinfo) && make install && echo $? [root@Legion101 /usr/local/mysql]# echo "export PATH=/usr/local/mysql/bin:\\$PATH" > /etc/profile.d/mariadb10.0.19.sh [root@Legion101 /usr/local/mysql]# . /etc/profile.d/mariadb10.0.19.sh
3、确保node1和node2上mysql用户UID、GID一致
[root@Legion100 /usr/local/mysql]# id mysql uid=1500(mysql) gid=1500(mysql) 组=1500(mysql) [root@Legion100 /usr/local/mysql]#
[root@Legion101 /tmp/mariadb-10.0.19]# id mysql uid=1500(mysql) gid=1500(mysql) 组=1500(mysql) [root@Legion101 /tmp/mariadb-10.0.19]#
4、将node1的DRBD设置为主节点
[root@Legion100 /usr/local/mysql]# drbdadm primary mariadb [root@Legion100 /usr/local/mysql]# drbd-overview 0:mariadb/0 Connected Primary/Secondary UpToDate/UpToDate C r----- /data ext4 59G 162M 56G 1% [root@Legion100 /usr/local/mysql]# cat /proc/drbd version: 8.4.3 (api:1/proto:86-101) GIT-hash: 89a294209144b68adb3ee85a73221f964d3ee515 build by root@Legion100.dwhd.org, 2015-05-30 03:06:56 0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r----- ns:64157908 nr:0 dw:1245304 dr:62914049 al:328 bm:3839 lo:0 pe:0 ua:0 ap:0 ep:1 wo:f oos:0 [root@Legion100 /usr/local/mysql]#
5、启动并测试node1上的MariaDB
[root@Legion100 /usr/local/mysql]# /etc/init.d/mysqld start Starting MySQL. [确定] [root@Legion100 /usr/local/mysql]# mysql <<< "show databases;" Database information_schema mysql performance_schema test [root@Legion100 /usr/local/mysql]#
6、关闭node1上的mysql且取消开机启动
[root@Legion100 /usr/local/mysql]# /etc/init.d/mysqld stop Shutting down MySQL... [确定] [root@Legion100 /usr/local/mysql]# chkconfig mysqld off [root@Legion100 /usr/local/mysql]# chkconfig --list mysqld mysqld 0:关闭 1:关闭 2:关闭 3:关闭 4:关闭 5:关闭 6:关闭 [root@Legion100 /usr/local/mysql]# umount /data/ [root@Legion100 /usr/local/mysql]#
7、将node1节点设置为从，node2节点上的DRBD设置为主节点并挂载
[root@Legion100 /usr/local/mysql]# drbdadm secondary mariadb [root@Legion100 /usr/local/mysql]# drbdadm role mariadb Secondary/Secondary [root@Legion100 /usr/local/mysql]#
[root@Legion101 /etc/drbd/drbd.d]# drbdadm primary mariadb [root@Legion101 /etc/drbd/drbd.d]# drbdadm role mariadb Primary/Secondary [root@Legion101 /etc/drbd/drbd.d]# mount /dev/drbd0 /data/ [root@Legion101 /etc/drbd/drbd.d]# mount /dev/mapper/vgzhongH-root on / type ext4 (rw,acl) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts (rw,gid=5,mode=620) tmpfs on /dev/shm type tmpfs (rw) /dev/sda1 on /boot type ext4 (rw) /dev/mapper/vgzhongH-data on /data type ext4 (rw,acl) none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw) /dev/drbd0 on /data type ext4 (rw) [root@Legion101 /etc/drbd/drbd.d]# df -hP Filesystem Size Used Avail Use% Mounted on /dev/mapper/vgzhongH-root 30G 7.5G 21G 27% / tmpfs 932M 22M 910M 3% /dev/shm /dev/sda1 477M 34M 418M 8% /boot /dev/mapper/vgzhongH-data 59G 162M 56G 1% /data /dev/drbd0 59G 162M 56G 1% /data [root@Legion101 /etc/drbd/drbd.d]#
8、启动并测试node2上的MariaDB
[root@Legion101 /etc/drbd/drbd.d]# /etc/init.d/mysqld start Starting MySQL.. [确定] [root@Legion101 /etc/drbd/drbd.d]# mysql <<< "show databases;" Database information_schema mysql performance_schema test [root@Legion101 /etc/drbd/drbd.d]#
9、关闭node2节点上的MariaDB且设置为开机不自动启动
[root@Legion101 /etc/drbd/drbd.d]# /etc/init.d/mysqld stop Shutting down MySQL... [确定] [root@Legion101 /etc/drbd/drbd.d]# chkconfig mysqld off [root@Legion101 /etc/drbd/drbd.d]# chkconfig --list mysqld mysqld 0:关闭 1:关闭 2:关闭 3:关闭 4:关闭 5:关闭 6:关闭 [root@Legion101 ~]# umount /data/ [root@Legion101 /etc/drbd/drbd.d]#
六、crmsh 资源管理
1、关闭drbd并设置开机不启动
[root@Legion100 ~]# /etc/init.d/drbd stop Stopping all DRBD resources: . [root@Legion100 ~]# chkconfig drbd off [root@Legion100 ~]# chkconfig --list drbd drbd 0:关闭 1:关闭 2:关闭 3:关闭 4:关闭 5:关闭 6:关闭 [root@Legion100 ~]# ssh root@172.16.6.101 "/etc/init.d/drbd stop" Stopping all DRBD resources: . [root@Legion100 ~]# ssh root@172.16.6.101 "chkconfig drbd off && chkconfig --list drbd" drbd 0:关闭 1:关闭 2:关闭 3:关闭 4:关闭 5:关闭 6:关闭 [root@Legion100 ~]#
2、增加drbd资源
[root@Legion100 ~]# crm crm(live)# configure crm(live)configure# property stonith-enabled=false crm(live)configure# property no-quorum-policy=ignore crm(live)configure# verify crm(live)configure# commit crm(live)configure# primitive mysqldrbd ocf:linbit:drbd params drbd_resource=web op start timeout=240 op stop timeout=100 op monitor role=Master interval=20 timeout=30 op monitor role=Slave interval=30 timeout=30 crm(live)configure# verify crm(live)configure# ms ms_mysqldrbd mysqldrbd meta master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true crm(live)configure# verify crm(live)configure# show node Legion100.dwhd.org node Legion101.dwhd.org primitive mysqldrbd ocf:linbit:drbd \\ params drbd_resource=web \\ op start timeout=240 interval=0 \\ op stop timeout=100 interval=0 \\ op monitor role=Master interval=20 timeout=30 \\ op monitor role=Slave interval=30 timeout=30 ms ms_mysqldrbd mysqldrbd \\ meta master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true property cib-bootstrap-options: \\ dc-version=1.1.11-97629de \\ cluster-infrastructure="classic openais (with plugin)" \\ expected-quorum-votes=2 \\ stonith-enabled=false \\ no-quorum-policy=ignore crm(live)configure# commit crm(live)configure# quit bye [root@Legion100 ~]# crm status Last updated: Sun May 31 14:45:53 2015 Last change: Sun May 31 14:45:46 2015 Stack: classic openais (with plugin) Current DC: Legion100.dwhd.org - partition with quorum Version: 1.1.11-97629de 2 Nodes configured, 2 expected votes 2 Resources configured Online: [ Legion100.dwhd.org Legion101.dwhd.org ] Master/Slave Set: ms_mysqldrbd [mysqldrbd] Masters: [ Legion101.dwhd.org ] Slaves: [ Legion100.dwhd.org ] [root@Legion100 ~]#
3、添加文件系统资源
[root@Legion100 ~]# crm configure crm(live)configure# primitive mystore ocf:heartbeat:Filesystem params device=/dev/drbd0 directory=/data fstype=ext4 op start timeout=60 op stop timeout=60 crm(live)configure# verify crm(live)configure# colocation mystore_with_ms_mysqldrbd inf: mystore ms_mysqldrbd:Master crm(live)configure# order mystore_after_ms_mysqldrbd mandatory: ms_mysqldrbd:promote mystore:start crm(live)configure# verify crm(live)configure# commit crm(live)configure# show node Legion100.dwhd.org node Legion101.dwhd.org primitive mysqldrbd ocf:linbit:drbd \\ params drbd_resource=web \\ op start timeout=240 interval=0 \\ op stop timeout=100 interval=0 \\ op monitor role=Master interval=20 timeout=30 \\ op monitor role=Slave interval=30 timeout=30 primitive mystore Filesystem \\ params device="/dev/drbd0" directory="/data" fstype=ext4 \\ op start timeout=60 interval=0 \\ op stop timeout=60 interval=0 ms ms_mysqldrbd mysqldrbd \\ meta master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true colocation mystore_with_ms_mysqldrbd inf: mystore ms_mysqldrbd:Master order mystore_after_ms_mysqldrbd Mandatory: ms_mysqldrbd:promote mystore:start property cib-bootstrap-options: \\ dc-version=1.1.11-97629de \\ cluster-infrastructure="classic openais (with plugin)" \\ expected-quorum-votes=2 \\ stonith-enabled=false \\ no-quorum-policy=ignore crm(live)configure#
4、添加mysql资源
[root@Legion100 ~]# crm configure crm(live)configure# primitive mysqld lsb:mysqld crm(live)configure# colocation mysqld_with_mystore inf: mysqld mystore crm(live)configure# verify crm(live)configure# commit crm(live)configure# quit bye [root@Legion100 ~]# crm status Last updated: Sun May 31 14:53:44 2015 Last change: Sun May 31 14:53:39 2015 Stack: classic openais (with plugin) Current DC: Legion100.dwhd.org - partition with quorum Version: 1.1.11-97629de 2 Nodes configured, 2 expected votes 4 Resources configured Online: [ Legion100.dwhd.org Legion101.dwhd.org ] Master/Slave Set: ms_mysqldrbd [mysqldrbd] Masters: [ Legion100.dwhd.org ] Slaves: [ Legion101.dwhd.org ] mystore (ocf::heartbeat:Filesystem): Started Legion100.dwhd.org mysqld (lsb:mysqld): Started Legion100.dwhd.org [root@Legion100 ~]# crm configure crm(live)configure# order mysqld_after_mystore mandatory: mystore mysqld crm(live)configure# verify crm(live)configure# commit crm(live)configure# show node Legion100.dwhd.org node Legion101.dwhd.org primitive mysqld lsb:mysqld primitive mysqldrbd ocf:linbit:drbd \\ params drbd_resource=web \\ op start timeout=240 interval=0 \\ op stop timeout=100 interval=0 \\ op monitor role=Master interval=20 timeout=30 \\ op monitor role=Slave interval=30 timeout=30 primitive mystore Filesystem \\ params device="/dev/drbd0" directory="/data" fstype=ext4 \\ op start timeout=60 interval=0 \\ op stop timeout=60 interval=0 ms ms_mysqldrbd mysqldrbd \\ meta master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true colocation mysqld_with_mystore inf: mysqld mystore colocation mystore_with_ms_mysqldrbd inf: mystore ms_mysqldrbd:Master order mysqld_after_mystore Mandatory: mystore mysqld order mystore_after_ms_mysqldrbd Mandatory: ms_mysqldrbd:promote mystore:start property cib-bootstrap-options: \\ dc-version=1.1.11-97629de \\ cluster-infrastructure="classic openais (with plugin)" \\ expected-quorum-votes=2 \\ stonith-enabled=false \\ no-quorum-policy=ignore crm(live)configure# quit bye [root@Legion100 ~]# crm status Last updated: Sun May 31 14:54:47 2015 Last change: Sun May 31 14:54:22 2015 Stack: classic openais (with plugin) Current DC: Legion100.dwhd.org - partition with quorum Version: 1.1.11-97629de 2 Nodes configured, 2 expected votes 4 Resources configured Online: [ Legion100.dwhd.org Legion101.dwhd.org ] Master/Slave Set: ms_mysqldrbd [mysqldrbd] Masters: [ Legion100.dwhd.org ] Slaves: [ Legion101.dwhd.org ] mystore (ocf::heartbeat:Filesystem): Started Legion100.dwhd.org mysqld (lsb:mysqld): Started Legion100.dwhd.org [root@Legion100 ~]#
5、添加vip资源
[root@Legion100 ~]# crm configure crm(live)configure# primitive myvip ocf:heartbeat:IPaddr params ip="172.16.7.200" op monitor interval=20 timeout=20 on-fail=restart crm(live)configure# verify crm(live)configure# colocation vip_with_ms_mysqldrbd inf: ms_mysqldrbd:Master vip crm(live)configure# verify crm(live)configure# commit crm(live)configure# show node Legion100.dwhd.org node Legion101.dwhd.org primitive mysqld lsb:mysqld primitive mysqldrbd ocf:linbit:drbd \\ params drbd_resource=web \\ op start timeout=240 interval=0 \\ op stop timeout=100 interval=0 \\ op monitor role=Master interval=20 timeout=30 \\ op monitor role=Slave interval=30 timeout=30 primitive mystore Filesystem \\ params device="/dev/drbd0" directory="/data" fstype=ext4 \\ op start timeout=60 interval=0 \\ op stop timeout=60 interval=0 primitive vip IPaddr \\ params ip=172.16.7.200 \\ op monitor interval=20 timeout=20 on-fail=restart ms ms_mysqldrbd mysqldrbd \\ meta master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 notify=true colocation mysqld_with_mystore inf: mysqld mystore colocation mystore_with_ms_mysqldrbd inf: mystore ms_mysqldrbd:Master colocation vip_with_ms_mysqldrbd inf: ms_mysqldrbd:Master vip order mysqld_after_mystore Mandatory: mystore mysqld order mystore_after_ms_mysqldrbd Mandatory: ms_mysqldrbd:promote mystore:start property cib-bootstrap-options: \\ dc-version=1.1.11-97629de \\ cluster-infrastructure="classic openais (with plugin)" \\ expected-quorum-votes=2 \\ stonith-enabled=false \\ no-quorum-policy=ignore crm(live)configure# quit bye [root@Legion100 ~]# crm status Last updated: Sun May 31 15:16:36 2015 Last change: Sun May 31 15:16:30 2015 Stack: classic openais (with plugin) Current DC: Legion100.dwhd.org - partition with quorum Version: 1.1.11-97629de 2 Nodes configured, 2 expected votes 5 Resources configured Online: [ Legion100.dwhd.org Legion101.dwhd.org ] Master/Slave Set: ms_mysqldrbd [mysqldrbd] Masters: [ Legion100.dwhd.org ] Slaves: [ Legion101.dwhd.org ] mystore (ocf::heartbeat:Filesystem): Started Legion100.dwhd.org mysqld (lsb:mysqld): Started Legion100.dwhd.org vip (ocf::heartbeat:IPaddr): Started Legion100.dwhd.org [root@Legion100 ~]#
6、查看mysql启动 drbd挂载 vip的情况
[root@Legion100 ~]# netstat -tnlp | grep 3306 tcp 0 0 :::3306 :::* LISTEN 81037/mysqld [root@Legion100 ~]# df -hP Filesystem Size Used Avail Use% Mounted on /dev/mapper/vgzhongH-root 30G 7.1G 21G 26% / tmpfs 932M 37M 895M 4% /dev/shm /dev/sda1 477M 34M 418M 8% /boot /dev/drbd0 4.9G 120M 4.5G 3% /data [root@Legion100 ~]# ip addr 1: lo:
7、添加mysql的授权且进行远程连接测试
[root@Legion100 ~]# mysql Welcome to the MariaDB monitor. Commands end with ; or \\g. Your MariaDB connection id is 6 Server version: 10.0.19-MariaDB-log Source distribution Copyright (c) 2000, 2015, Oracle, MariaDB Corporation Ab and others. Type \"help;\" or \"\\h\" for help. Type \"\\c\" to clear the current input statement. MariaDB [(none)]> grant all on *.* to root@"172.16.%.%" identified by "lookback"; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> flush privileges; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> \\q Bye [root@Legion100 ~]# 1 1[root@Legion101 ~]# ip addr 1: lo:
8、切换节点资源转移
[root@Legion100 ~]# crm status Last updated: Sun May 31 15:27:52 2015 Last change: Sun May 31 15:27:49 2015 Stack: classic openais (with plugin) Current DC: Legion100.dwhd.org - partition with quorum Version: 1.1.11-97629de 2 Nodes configured, 2 expected votes 5 Resources configured Online: [ Legion100.dwhd.org Legion101.dwhd.org ] Master/Slave Set: ms_mysqldrbd [mysqldrbd] Masters: [ Legion100.dwhd.org ] #开始主节点是node1 Slaves: [ Legion101.dwhd.org ] mystore (ocf::heartbeat:Filesystem): Started Legion100.dwhd.org mysqld (lsb:mysqld): Started Legion100.dwhd.org vip (ocf::heartbeat:IPaddr): Started Legion100.dwhd.org [root@Legion100 ~]# crm node standby Legion100.dwhd.org [root@Legion100 ~]# crm status Last updated: Sun May 31 15:28:50 2015 Last change: Sun May 31 15:28:03 2015 Stack: classic openais (with plugin) Current DC: Legion100.dwhd.org - partition with quorum Version: 1.1.11-97629de 2 Nodes configured, 2 expected votes 5 Resources configured Node Legion100.dwhd.org: standby Online: [ Legion101.dwhd.org ] Master/Slave Set: ms_mysqldrbd [mysqldrbd] Masters: [ Legion101.dwhd.org ] #此时主节点已经是node2了说明转移成功 Stopped: [ Legion100.dwhd.org ] mystore (ocf::heartbeat:Filesystem): Started Legion101.dwhd.org mysqld (lsb:mysqld): Started Legion101.dwhd.org vip (ocf::heartbeat:IPaddr): Started Legion101.dwhd.org [root@Legion100 ~]#
[root@Legion100 ~]# netstat -tnlp | grep 3306 [root@Legion100 ~]# df -hP Filesystem Size Used Avail Use% Mounted on /dev/mapper/vgzhongH-root 30G 7.1G 21G 26% / tmpfs 932M 37M 895M 4% /dev/shm /dev/sda1 477M 34M 418M 8% /boot [root@Legion100 ~]# ip addr 1: lo:
[root@Legion101 ~]# netstat -tnlp | grep 3306 tcp 0 0 :::3306 :::* LISTEN 78683/mysqld [root@Legion101 ~]# df -hP Filesystem Size Used Avail Use% Mounted on /dev/mapper/vgzhongH-root 30G 7.1G 21G 26% / tmpfs 932M 22M 910M 3% /dev/shm /dev/sda1 477M 34M 418M 8% /boot /dev/drbd0 4.9G 120M 4.5G 3% /data [root@Legion101 ~]# ip addr 1: lo:
9、现在来测试down vip
[root@Legion101 ~]# ip addr 1: lo:
有次可见 vip也能重新启动