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High Availability Add-On 参考
9.8. 使用 SNMP 查询 Pacemaker 集群（Red Hat Enterprise Linux 7.5 及更新的版本）

9.8. 使用 SNMP 查询 Pacemaker 集群（Red Hat Enterprise Linux 7.5 及更新的版本）

从 Red Hat Enterprise Linux 7.5 开始，您可以使用 pcs_snmp_agent 守护进程通过 SNMP 查询 Pacemaker 集群的数据。pcs_snmp_agent 守护进程是一个 SNMP 代理，通过代理 x 协议连接到主代理 (snmpd)。pcs_snmp_agent 代理不充当独立代理，因为它仅向主代理提供数据。

以下流程为系统设置基本配置，以便在 Pacemaker 集群中使用 SNMP。您可以在集群的每个节点上运行此步骤，您将使用 SNMP 为集群获取数据。

在群集的每个节点上安装 pcs-snmp 软件包。这还将安装提供 sn mp 守护进程的 net-sn mp 软件包。
```
yum install pcs-snmp
```
```
# yum install pcs-snmp
```
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将以下行添加到 /etc/snmp/snmpd.conf 配置文件，以将 snmpd 守护进程设置为 主代理x。
```
master agentx
```
```
master agentx
```
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将以下行添加到 /etc/snmp/snmpd.conf 配置文件，以在同一 SNMP 配置中启用 pcs_snmp_agent。
```
view    systemview    included   .1.3.6.1.4.1.32723.100
```
```
view    systemview    included   .1.3.6.1.4.1.32723.100
```
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启动 pcs_snmp_agent 服务。

systemctl start pcs_snmp_agent.service
systemctl enable pcs_snmp_agent.service

# systemctl start pcs_snmp_agent.service
# systemctl enable pcs_snmp_agent.service

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要检查配置，请使用 pcs status 显示群集的状态，然后尝试从 SNMP 获取数据，以检查它是否与输出对应。请注意，当使用 SNMP 获取数据时，只会提供原始资源。

以下示例显示了在运行中的群集上使用失败操作的 pcs status 命令的输出结果。

pcs status

# pcs status
Cluster name: rhel75-cluster
Stack: corosync
Current DC: rhel75-node2 (version 1.1.18-5.el7-1a4ef7d180) - partition with quorum
Last updated: Wed Nov 15 16:07:44 2017
Last change: Wed Nov 15 16:06:40 2017 by hacluster via cibadmin on rhel75-node1

2 nodes configured
14 resources configured (1 DISABLED)

Online: [ rhel75-node1 rhel75-node2 ]

Full list of resources:

 fencing        (stonith:fence_xvm):    Started rhel75-node1
 dummy5 (ocf::pacemaker:Dummy): Stopped (disabled)
 dummy6 (ocf::pacemaker:Dummy): Stopped
 dummy7 (ocf::pacemaker:Dummy): Started rhel75-node2
 dummy8 (ocf::pacemaker:Dummy): Started rhel75-node1
 dummy9 (ocf::pacemaker:Dummy): Started rhel75-node2
 Resource Group: group1
     dummy1     (ocf::pacemaker:Dummy): Started rhel75-node1
     dummy10    (ocf::pacemaker:Dummy): Started rhel75-node1
 Clone Set: group2-clone [group2]
     Started: [ rhel75-node1 rhel75-node2 ]
 Clone Set: dummy4-clone [dummy4]
     Started: [ rhel75-node1 rhel75-node2 ]

Failed Actions:
* dummy6_start_0 on rhel75-node1 'unknown error' (1): call=87, status=complete, exitreason='',
    last-rc-change='Wed Nov 15 16:05:55 2017', queued=0ms, exec=20ms

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snmpwalk -v 2c -c public localhost PACEMAKER-PCS-V1-MIB::pcmkPcsV1Cluster

# snmpwalk -v 2c -c public localhost PACEMAKER-PCS-V1-MIB::pcmkPcsV1Cluster
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterName.0 = STRING: "rhel75-cluster"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterQuorate.0 = INTEGER: 1
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterNodesNum.0 = INTEGER: 2
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterNodesNames.0 = STRING: "rhel75-node1"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterNodesNames.1 = STRING: "rhel75-node2"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterCorosyncNodesOnlineNum.0 = INTEGER: 2
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterCorosyncNodesOnlineNames.0 = STRING: "rhel75-node1"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterCorosyncNodesOnlineNames.1 = STRING: "rhel75-node2"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterCorosyncNodesOfflineNum.0 = INTEGER: 0
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterPcmkNodesOnlineNum.0 = INTEGER: 2
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterPcmkNodesOnlineNames.0 = STRING: "rhel75-node1"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterPcmkNodesOnlineNames.1 = STRING: "rhel75-node2"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterPcmkNodesStandbyNum.0 = INTEGER: 0
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterPcmkNodesOfflineNum.0 = INTEGER: 0
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterAllResourcesNum.0 = INTEGER: 11
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterAllResourcesIds.0 = STRING: "fencing"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterAllResourcesIds.1 = STRING: "dummy5"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterAllResourcesIds.2 = STRING: "dummy6"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterAllResourcesIds.3 = STRING: "dummy7"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterAllResourcesIds.4 = STRING: "dummy8"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterAllResourcesIds.5 = STRING: "dummy9"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterAllResourcesIds.6 = STRING: "dummy1"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterAllResourcesIds.7 = STRING: "dummy10"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterAllResourcesIds.8 = STRING: "dummy2"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterAllResourcesIds.9 = STRING: "dummy3"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterAllResourcesIds.10 = STRING: "dummy4"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterRunningResourcesNum.0 = INTEGER: 9
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterRunningResourcesIds.0 = STRING: "fencing"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterRunningResourcesIds.1 = STRING: "dummy7"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterRunningResourcesIds.2 = STRING: "dummy8"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterRunningResourcesIds.3 = STRING: "dummy9"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterRunningResourcesIds.4 = STRING: "dummy1"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterRunningResourcesIds.5 = STRING: "dummy10"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterRunningResourcesIds.6 = STRING: "dummy2"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterRunningResourcesIds.7 = STRING: "dummy3"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterRunningResourcesIds.8 = STRING: "dummy4"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterStoppedResroucesNum.0 = INTEGER: 1
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterStoppedResroucesIds.0 = STRING: "dummy5"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterFailedResourcesNum.0 = INTEGER: 1
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterFailedResourcesIds.0 = STRING: "dummy6"
PACEMAKER-PCS-V1-MIB::pcmkPcsV1ClusterFailedResourcesIds.0 = No more variables left in this MIB View (It is past the end of the MIB tree)

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9.8. 使用 SNMP 查询 Pacemaker 集群（Red Hat Enterprise Linux 7.5 及更新的版本）

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