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标题: 客户机安装EM agent后启动报错HTTP Listener Failed at Startup Possible Port Con... [打印本页]

作者: 刘泽宇 时间: 2025-1-9 16:34
标题: 客户机安装EM agent后启动报错HTTP Listener Failed at Startup Possible Port Con...
客户机安装好agent之后，启动代理提示：
Agent is Not Running. Possible port conflict on port(3872): Retrying the operation.
Failed to start the agent after 1 attempts. Please check that the port(3872) is available.

完整输出为：
[oracle@orahowracq1] ./emctl start agent
Oracle Enterprise Manager Cloud Control 12c Release 2
Copyright (c) 1996, 2012 Oracle Corporation.  All rights reserved.
Starting agent ................ failed.
HTTP Listener failed at Startup
Possible port conflict on port(3872): Retrying the operation...
Failed to start the agent after 1 attempts.  Please check that the port(3872) is available.
Consult emctl.log and emagent.nohup in: /u01/app/oracle/product/12.1.0.2/agent/agent_inst/sysman/log

原因可能是3872端口被占用，查看当前3872端口情况：
[oracle@orahowracq1] netstat -anp |grep 3872

如果有占用，可将进程杀掉：
Now find the PID of this process. So that we can mark it for kill.

[oracle@orahowracq1] ps -ef|grep agent

root  6535    1 0 Jun 17 ?    0:02 /opt/opsware/agent/bin/python /opt/opsware/agent/pylibs/shadowbot/daemonbot.pyc
root  3804    1 0 Jun 17 ?    206:39 /opt/VRTSobc/pal33/bin/vxpal -a actionagent -x
root  6549  6535 0 Jun 17 ?    178:38 /opt/opsware/agent/bin/python /opt/opsware/agent/pylibs/shadowbot/daemonbot.pyc
root  9184    1 0 Jun 17 ?    71:57 /opt/Navisphere/bin/naviagent -f /etc/Navisphere/agent.config
root  8482  8071 0 Jun 17 ?    114:20 /opt/ecc/exec/mstragent -s
  oracle  15627 15547 0 Mar 13 ?    111:40 /u01/app/oracle/product/12.1.0.2/agent/core/12.1.0.2.0/jdk/bin/sparcv9/java -Xm
  oracle 24178  6501 0 23:22:46 pts/1  0:00 grep agent
  oracle 15547    1 0 Mar 13 ?    0:27 /u01/app/oracle/product/12.1.0.2/agent/core/12.1.0.2.0/perl/bin/perl
Make sure that process must be in: /u01/app/oracle/product/12.1.0.2/agent/core/12.1.0.2.0/jdk/bin/sparcv9/java. Finally kill the process having PID 15627 and start up the agent.

[oracle@orahowracq1] kill -9 15627

杀掉占用端口的进程后，可尝试重启代理：
[oracle@orahowracq1] cd /u01/app/oracle/product/us/agent12c/bin
[oracle@orahowracq1] ./emctl start agent

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