RHEL7.4 多台服务器使用pcs挂载共享LUN
系统4年前 (2019-01-20)
两台服务器需要挂载由同一个存储划过来的同一个LUN，所以需要第三方的集群软件进行资源接管，直接挂载会提示设备繁忙
基础环境配置
验证计算机名（两个节点）
uname -n
修改hosts
vi /etc/hosts 添加 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 10.37.16.112 Laos-AAA-APP-DB-SVR1 10.37.16.113 Laos-AAA-APP-DB-SVR2
SSH互信（两个节点）
ssh-keygen -t rsa -f ~/.ssh/id_rsa -P '' 节点1 scp /root/.ssh/id_rsa.pub root@Laos-AAA-APP-DB-SVR2:/root/.ssh/authorized_keys scp /etc/hosts Laos-AAA-APP-DB-SVR2:/etc/ 节点2 scp /root/.ssh/id_rsa.pub root@Laos-AAA-APP-DB-SVR1:/root/.ssh/authorized_keys
安装附加源和更换源（两个节点）
curl -# -O http://vault.centos.org/centos/7.4.1708/os/x86_64/Packages/wget-1.14-15.el7.x86_64.rpm rpm -ivh wget-1.14-15.el7.x86_64.rpm wget https://dl.fedoraproject.org/pub/epel/7/x86_64/Packages/e/epel-release-7-11.noarch.rpm rpm -ivh epel-release-7-11.noarch.rpm 删除原yum rpm -aq | grep yum | xargs rpm -e --nodeps rpm -aq | grep python-iniparse | xargs rpm -e --nodeps 配置新yum cd /root wget http://vault.centos.org/centos/7.4.1708/os/x86_64/Packages/yum-3.4.3-154.el7.centos.noarch.rpm wget http://vault.centos.org/centos/7.4.1708/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm wget http://vault.centos.org/centos/7.4.1708/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-42.el7.noarch.rpm wget http://vault.centos.org/centos/7.4.1708/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm wget http://vault.centos.org/centos/7.4.1708/os/x86_64/Packages/python-urlgrabber-3.10-8.el7.noarch.rpm rpm -ivh --nodeps yum-* rpm -ivh python-iniparse-0.4-9.el7.noarch.rpm rpm -ivh --nodeps python-urlgrabber-3.10-8.el7.noarch.rpm vi /etc/yum.repos.d/CentOS-Base.repo 添加 [base] name=CentOS-$releasever - Base baseurl=http://vault.centos.org/centos/7.4.1708/os/$basearch/ gpgcheck=1 gpgkey=http://vault.centos.org/centos/7.4.1708/os/x86_64/RPM-GPG-KEY-CentOS-7 #released updates [updates] name=CentOS-$releasever - Updates baseurl=http://vault.centos.org/centos/7.4.1708/updates/$basearch/ gpgcheck=1 gpgkey=http://vault.centos.org/centos/7.4.1708/os/x86_64/RPM-GPG-KEY-CentOS-7 [extras] name=CentOS-$releasever - Extras baseurl=http://vault.centos.org/centos/7.4.1708/extras//$basearch/ gpgcheck=1 gpgkey=http://vault.centos.org/centos/7.4.1708/os/x86_64/RPM-GPG-KEY-CentOS-7 [centosplus] name=CentOS-$releasever - Plus baseurl=http://vault.centos.org/centos/7.4.1708/centosplus//$basearch/ gpgcheck=1 enabled=0 yum clean all && yum makecache
配置时间同步
节点1 yum install -y chrony vi /etc/chrony.conf 添加 server 10.37.16.112 iburst 修改 # Allow NTP client access from local network. allow 10.37.16.0/24 设置自启 timedatectl set-ntp true systemctl enable chronyd.service systemctl start chronyd.service
检查
grep -n "^allow" /etc/chrony.conf
systemctl restart chronyd timedatectl chronyc sources
节点2 yum install -y chrony vi /etc/chrony.conf 修改 注释掉公网NTP服务器并添加本地NTP服务器 server 10.37.16.112 iburst 设置自启 timedatectl set-ntp true systemctl enable chronyd.service systemctl start chronyd.service
检查
grep -n "^server" /etc/chrony.conf chronyc sources -v
timedatectl 查看是否ntp enable
共享文件系统创建
安装多路径（两个节点）
yum install -y device-mapper device-mapper-multipath mpathconf --enable 设置自启 systemctl start multipathd.service systemctl enable multipathd.service
创建目录（两个节点）
mkdir /mysqldata mkdir /reportdata mkdir /aaarad_logs mkdir /aaacdr
创建LVM（节点1）
使用multipath -ll，查看LUN容量，方便区分LUN
pvcreate /dev/mapper/mpathf vgcreate vg_mysqldata /dev/mapper/mpathf lvcreate -n lv_mysqldata -l 100%FREE vg_mysqldata mkfs.xfs /dev/vg_mysqldata/lv_mysqldata pvcreate /dev/mapper/mpathj vgcreate vg_interfdisk1 /dev/mapper/mpathj lvcreate -n lv_aaa_radlogs -l 100%FREE vg_interfdisk1 mkfs.xfs /dev/vg_interfdisk1/lv_aaa_radlogs pvcreate /dev/mapper/mpathk vgcreate vg_interfdisk2 /dev/mapper/mpathk lvcreate -n lv_aaa_radcdr -l 100%FREE vg_interfdisk2 mkfs.xfs /dev/vg_interfdisk2/lv_aaa_radcdr pvcreate /dev/mapper/mpathh /dev/mapper/mpathe /dev/mapper/mpathd /dev/mapper/mpathb /dev/mapper/mpathi /dev/mapper/mpathg vgcreate vg_reportdata /dev/mapper/mpathh /dev/mapper/mpathe /dev/mapper/mpathd /dev/mapper/mpathb /dev/mapper/mpathi /dev/mapper/mpathg lvcreate -n lv_reportdata -l 100%FREE vg_reportdata mkfs.xfs /dev/vg_reportdata/lv_reportdata
节点2
pvscan vgscan lvscan 如果没有扫描出新的pv vg lv，重启系统就会识别到
配置集群软件
安装（两个节点）
yum -y install pcs pacemaker fence-agents-all
passwd hacluster （密码dell@123456）
设置自启（两个节点）
systemctl start pcsd.service systemctl enable pcsd.service
集群各节点之间进行认证（节点1）
pcs cluster auth Laos-AAA-APP-DB-SVR1 Laos-AAA-APP-DB-SVR2 输入用户名hacluster 并输入密码dell@123456
创建集群（节点1）
pcs cluster setup --start --name mysql_cluster Laos-AAA-APP-DB-SVR1 Laos-AAA-APP-DB-SVR2
开启集群（节点1)
pcs cluster enable --all
查看集群状态（节点1）
pcs cluster status
关闭fence冲裁支持（节点1）
pcs property set stonith-enabled=false
无法时仲裁忽略（节点1）
pcs property set no-quorum-policy=ignore pcs property list
创建集群共享资源（节点1）
如果创建资源时，不将资源指定在同一个组中，磁盘会平均出现在节点1和节点2上
pcs resource create MySQLdata_vip IPaddr2 ip=10.37.16.114 cidr_netmask=24 --group MySQL pcs resource create MySQLdata_fs ocf:heartbeat:Filesystem device=/dev/mapper/vg_mysqldata-lv_mysqldata directory=/mysqldata fstype="xfs" --group MySQL pcs resource create MySQLdata_aaarad ocf:heartbeat:Filesystem device=/dev/mapper/vg_interfdisk1-lv_aaa_radlogs directory=/aaarad_logs fstype="xfs" --group MySQL pcs resource create MySQLdata_aaacdr ocf:heartbeat:Filesystem device=/dev/mapper/vg_interfdisk2-lv_aaa_radcdr directory=/aaacdr fstype="xfs" --group MySQL pcs resource create MySQLdata_reportdata ocf:heartbeat:Filesystem device=/dev/mapper/vg_reportdata-lv_reportdata directory=/reportdata fstype="xfs" --group MySQL
验证
pcs status
如果资源配置错误，使用pcs resource delete+资源名 进行删除
df -Th
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