Linux排查处理某个特定服务报错【测试成功】

艺帆风顺 发布于 2025-04-03 30 次阅读

一、问题背景

    存在某个服务此前开机后运行正常，今天服务器重启后该服务未能正常启动，一定程度上影响了业务系统的运行，随即进行排查。

二、排查过程

    首先查看服务状态：systemctl status YLMonitor

    [root@cheliangweb sh]# systemctl status YLMonitor● YLMonitor.service - YLMonitor service Loaded: loaded (/etc/systemd/system/YLMonitor.service; enabled; vendor preset: disabled) Active: active (running) since 二 2023-09-12 09:35:23 CST; 28s ago Main PID: 8078 (YLMonitor) Tasks: 8 CGroup: /system.slice/YLMonitor.service └─8078 /temp/YLMonitor/YLMonitor -c /temp/YLMonitor/YLMonitor.ini
    9月 12 09:35:23 cheliangweb systemd[1]: Started YLMonitor service.9月 12 09:35:23 cheliangweb YLMonitor[8078]: 2023/09/12 09:35:23 [I] [root.go:220] start frpc serv...ni]9月 12 09:35:23 cheliangweb YLMonitor[8078]: 2023/09/12 09:35:23 [I] [service.go:301] [cbf8b715e98...9f]9月 12 09:35:23 cheliangweb YLMonitor[8078]: 2023/09/12 09:35:23 [I] [proxy_manager.go:150] [cbf8b...pc]9月 12 09:35:23 cheliangweb YLMonitor[8078]: 2023/09/12 09:35:23 [I] [control.go:172] [cbf8b715e98...ess9月 12 09:35:24 cheliangweb YLMonitor[8078]: 2023/09/12 09:35:24 [I] [control.go:172] [cbf8b715e98...ess9月 12 09:35:24 cheliangweb YLMonitor[8078]: 2023/09/12 09:35:24 [I] [control.go:172] [cbf8b715e98...essHint: Some lines were ellipsized, use -l to show in full.

     journalctl -u YLMonitor

    继续查看服务日志：

    根据以上信息判断可能是DNS服务的问题，开机后通过该DNS连接目标域名不可达，随即服务启动失败。

         vim /etc/resolv.conf

      添加一条114的DNS。# Generated by NetworkManagernameserver 114.114.114.114

      再次执行重启，发现服务正常：

        [root@cheliangweb sh]# systemctl status YLMonitor● YLMonitor.service - YLMonitor service Loaded: loaded (/etc/systemd/system/YLMonitor.service; enabled; vendor preset: disabled) Active: active (running) since 二 2023-09-12 09:35:23 CST; 28s ago Main PID: 8078 (YLMonitor) Tasks: 8 CGroup: /system.slice/YLMonitor.service └─8078 /temp/YLMonitor/YLMonitor -c /temp/YLMonitor/YLMonitor.ini
        9月 12 09:35:23 cheliangweb systemd[1]: Started YLMonitor service.9月 12 09:35:23 cheliangweb YLMonitor[8078]: 2023/09/12 09:35:23 [I] [root.go:220] start frpc serv...ni]9月 12 09:35:23 cheliangweb YLMonitor[8078]: 2023/09/12 09:35:23 [I] [service.go:301] [cbf8b715e98...9f]9月 12 09:35:23 cheliangweb YLMonitor[8078]: 2023/09/12 09:35:23 [I] [proxy_manager.go:150] [cbf8b...pc]9月 12 09:35:23 cheliangweb YLMonitor[8078]: 2023/09/12 09:35:23 [I] [control.go:172] [cbf8b715e98...ess9月 12 09:35:24 cheliangweb YLMonitor[8078]: 2023/09/12 09:35:24 [I] [control.go:172] [cbf8b715e98...ess9月 12 09:35:24 cheliangweb YLMonitor[8078]: 2023/09/12 09:35:24 [I] [control.go:172] [cbf8b715e98...essHint: Some lines were ellipsized, use -l to show in full.