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Zabbix遠程命令執行失敗

serve include level 我們 cto centos 7 trap call ice

前言

問題 : 手機上收到tomcat server【80】 down信息,服務down掉,往往都是有重啟操作。重啟失敗才會報警。如果重啟操作執行了,我們就需要查看為何不能啟動?

 Trigger: Tomcat service【80】is down
 Trigger status: PROBLEM
 Trigger severity: Disaster
 Trigger URL:

 Item values:

 1. Tomcat status (192.168.96.200:net.tcp.listen[80]): 0
 2. *UNKNOWN* (*UNKNOWN*:*UNKNOWN*): *UNKNOWN*
 3. *UNKNOWN* (*UNKNOWN*:*UNKNOWN*): *UNKNOWN*

 Original event

主機說明

192.168.96.113: zabbix server
192.168.96.115: zabbix proxy 用於監控主機
192.168.96.200: 被監控的主機

1. 先查看重啟動作是否執行。

服務down掉,往往都是有重啟操作。重啟失敗才會報警。如果重啟操作執行了,我們就需要查看為何不能啟動?首先確保重啟操作是否實行成功。登錄zabbix web端查看動作的執行,【報表】--> 【動作日誌】如下圖:

技術分享圖片

如圖,可以看到此命令執行失敗,並且提示可能是訪問拒絕。我們需要進一步確認出錯是否為訪問問題。

2. 查看執行命令主機日誌

登錄192.168.96.200,並查看其zabbix agent端日誌。

[root@GPU ~]# tail -5 /var/log/zabbix/zabbix_agentd.log

  2325:20170906:192653.587 active check configuration update from [192.168.96.115:10051] started to fail (cannot connect to [[192.168.96.115]:10051]: [4] Interrupted system call)
  2325:20170906:192753.599 active check configuration update from [192.168.96.115:10051] is working again
  2322:20170906:192754.512 failed to accept an incoming connection: connection from "192.168.96.113" rejected, allowed hosts: "192.168.96.115"
  2324:20170906:155824.924 failed to accept an incoming connection: connection from "192.168.96.113" rejected, allowed hosts: "192.168.96.115"
  2323:20170906:160824.587 failed to accept an incoming connection: connection from "192.168.96.113" rejected, allowed hosts: "192.168.96.115"

從日誌中我們可以知道,zabbix server 192.168.96.113 試圖與 192.168.96.200建立連接,192.168.96.200拒絕連接,因為他只能允許192.168.96.115。

3. 解決問題

192.168.96.113用代理服務器192.168.96.115采集數據,而遠程命令是無法交由proxy執行(zabbix server 和zabbix proxy 支持的文件看附錄一)。

grep ^[A-Z] /etc/zabbix/zabbix_agentd.conf

PidFile=/var/run/zabbix/zabbix_agentd.pid
LogFile=/var/log/zabbix/zabbix_agentd.log
LogFileSize=0
EnableRemoteCommands=1
LogRemoteCommands=1
Server=192.168.96.115
ServerActive=192.168.96.115
Hostname=192.168.96.200
Include=/etc/zabbix/zabbix_agentd.d/

可以看到server僅為192.168.96.115,故192.168.96.113無法執行遠程命令。我們需要將server=10.60.96.115修改為server=10.60.96.113,10.60.96.115

註意 : zabbix agent 配置文件修改需要重啟服務,

centos 6上: ~]# service zabbix-agent start

centos 7 上:~]# systemctl start zabbix-agent

編譯安裝:請找到安裝目錄下的sbin目錄,並運行zabbix_agentd命令。

附錄一:

Function Supported by proxy
Zabbix agent checks Yes
Zabbix agent checks (active) Yes
Simple checks Yes
Trapper items Yes
SNMP checks Yes
SNMP traps Yes
IPMI checks Yes
JMX checks Yes
Log file monitoring Yes
Internal checks Yes
SSH checks Yes
Telnet checks Yes
External checks Yes
Built-in web monitoring Yes
Network discovery Yes
Low-level discovery Yes
Calculating triggers No
Processing events No
Sending alerts No
Remote commands * No

Zabbix遠程命令執行失敗