場景：

同事操作失誤，將agent節點誤刪了?

解決方法?

?1.對比正常agent節點與被刪除節點安裝包差異

yum list installed |grep cloudera

2.通過和正常的服務器對比我們發現，丟失的只有cloudera-manager-agent.x86_64

3.查看yum源中所有cloudera-manager組件：

yum search cloudera-manager

我們可以發現 cloudera-manager-agent.x86_64 是我們刪除的agent包

4.安裝：cloudera-manager-agent.x86_64

yum install cloudera-manager-agent.x86_64

5.啟動agent節點

systemctl start cloudera-scm-agent

?啟動失敗，查看日志，我們發現他連接的是 localhost:7182?而不是?server端的ip

[14/Jan/2020 14:02:14 +0000] 10599 MainThread agent ERROR Heartbeating to localhost:7182 failed. Traceback (most recent call last):File "/opt/cloudera/cm-agent/lib/python2.7/site-packages/cmf/agent.py", line 1390, in _send_heartbeatself.cfg.master_port)File "/opt/cloudera/cm-agent/lib/python2.7/site-packages/avro/ipc.py", line 469, in __init__self.conn.connect()File "/usr/lib64/python2.7/httplib.py", line 833, in connectself.timeout, self.source_address)File "/usr/lib64/python2.7/socket.py", line 571, in create_connectionraise err error: [Errno 111] Connection refused [14/Jan/2020 14:02:14 +0000] 10599 MainThread heartbeat_tracker INFO HB stats (seconds): num:1 LIFE_MIN:0.00 min:0.00 mean:0.00 max:0.00 LIFE_MAX:0.00

6.修改 cloudera-scm-agent 連接的 cloudera-scm-server 配置

vi /etc/cloudera-scm-agent/config.ini # 修改cm的ip。 server_host=192.168.2.111

?7.重啟agent服務

systemctl restart cloudera-scm-agent

?

總結

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