Linux RHCS 基础维护命令

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

``` clustat cman_tool status cman_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。 # clustat Cluster Status for new_cluster @ Tue Sep 1 12:23:09 2015 Member Status: Quorate

Member Name ID Status

---

heartdb1 1 Online, Local, rgmanager
heartdb2 2 Online, rgmanager

Service Name Owner (Last) State

---

service:orares heartdb1 started

1.2 cman_tool status 查看

cman_tool status

Version: 6.2.0
Config Version: 18
Cluster Name: new_cluster
Cluster Id: 23732
Cluster Member: Yes
Cluster Generation: 432
Membership state: Cluster-Member
Nodes: 2
Expected votes: 1
Total votes: 2
Quorum: 1
Active subsystems: 8
Flags: 2node Dirty
Ports Bound: 0 177
Node name: heartdb1
Node ID: 1
Multicast addresses: 239.192.92.17
Node addresses: 192.168.1.1

1.3 cman_tool 查看nodes信息

cman_tool nodes -a

Node 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

<h1 id="2">2. 集群正常启动</h1>
先启动cman,再启动rgmanager.

service cman start
service 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 start

Starting 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]

<h1 id="3">3. 集群正常关闭</h1>
先关闭rgmanager,再关闭cman.

service rgmanager stop
service 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 stop

Shutting down Cluster Service Manager...
等待服务停止:[确定]
Cluster Service Manager is stopped.

service cman stop

Stopping cluster:
Stopping fencing... done
Stopping cman... done
Stopping ccsd... done
Unmounting configfs... done
[确定]

<h1 id="4">4. 查看服务是否关闭开机启动</h1>

chkconfig --list |grep cman
chkconfig --list |grep rgmanager

下面的查看结果都是关闭的:

chkconfig --list |grep cman

cman 0:关闭 1:关闭 2:关闭 3:关闭 4:关闭 5:关闭 6:关闭

chkconfig --list |grep rgmanager

rgmanager 0:关闭 1:关闭 2:关闭 3:关闭 4:关闭 5:关闭 6:关闭