本文只是介绍Linux RHCS最基本的一些维护命令,属于DBA应该了解的层面。
1.查看集群状态2.集群正常启动3.集群正常关闭4.查看服务是否关闭开机启动
1. 查看集群状态clustatcman_tool statuscman_tool nodes -a
下面是这些命令查询的显示结果示例:#1.1 clustat查看集群状态(最常用)在节点1查看的,状态中的Local就在节点1上显示。# clustatCluster Status for new_cluster @ Tue Sep 1 12:23:09 2015Member Status: Quorate
Member Name ID Status —— —- —- ——heartdb1 1 Online, Local, rgmanagerheartdb2 2 Online, rgmanager
Service Name Owner (Last) State ——- —- —– —— —– service:orares heartdb1 started
#1.2 cman_tool status 查看# cman_tool statusVersion: 6.2.0Config Version: 18Cluster Name: new_clusterCluster Id: 23732Cluster Member: YesCluster Generation: 432Membership state: Cluster-MemberNodes: 2Expected votes: 1Total votes: 2Quorum: 1 Active subsystems: 8Flags: 2node Dirty Ports Bound: 0 177 Node name: heartdb1Node ID: 1Multicast addresses: 239.192.92.17 Node addresses: 192.168.1.1
#1.3 cman_tool 查看nodes信息# cman_tool nodes -aNode Sts Inc Joined Name 1 M 404 2015-08-03 17:52:20 heartdb1 Addresses: 192.168.1.1 2 M 432 2015-09-01 14:32:27 heartdb2 Addresses: 192.168.1.2
2. 集群正常启动
先启动cman,再启动rgmanager.service cman startservice rgmanager start
下面是集群正常启动过程示例:注: 各节点先依次启动cman再依次启动rgmanager,注意启动顺序。# service cman startStarting cluster: Loading modules… done Mounting configfs… done Starting ccsd… done Starting cman… done Starting daemons… done Starting fencing… done[确定]
# service rgmanager start启动 Cluster Service Manager:[确定]
3. 集群正常关闭
先关闭rgmanager,再关闭cman.service rgmanager stopservice cman stop
下面是集群正常关闭过程示例:注: 各节点先依次关闭rgmanager,再依次关闭cman,注意关闭顺序。# service rgmanager stopShutting down Cluster Service Manager…等待服务停止:[确定]Cluster Service Manager is stopped.
# service cman stopStopping cluster: Stopping fencing… done Stopping cman… done Stopping ccsd… done Unmounting configfs… done[确定]
4. 查看服务是否关闭开机启动chkconfig –list |grep cmanchkconfig –list |grep rgmanager
下面的查看结果都是关闭的:# chkconfig –list |grep cmancman 0:关闭 1:关闭 2:关闭 3:关闭 4:关闭 5:关闭 6:关闭# chkconfig –list |grep rgmanagerrgmanager 0:关闭 1:关闭 2:关闭 3:关闭 4:关闭 5:关闭 6:关闭
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