tty7 服务器崩溃(问题包含日志,解决方案未知)

tty7 服务器崩溃(问题包含日志,解决方案未知)

我目前运行的是 Ubuntu 21.04 服务器。最近,我在服务器上安装了 VNC。我通过运行 ssh 隧道将 VNC 连接到服务器上ssh -L 5901:localhost:5900 username@ip -i ~/.ssh/privatekey,然后使用 tigerVNC 连接到本地主机端口 5901。除了 3 个 nodejs 项目外,服务器上没有运行任何密集型项目。

我的问题:结束 VNC 会话 5 小时后,服务器崩溃。运行时last -x,崩溃时出现以下错误:

tanish   tty7         :0               Fri May 14 06:05 - crash  (09:41)
tanish   tty7         :0               Fri May 14 23:38 - crash  (01:08)
mihir    tty7         :0               Sat May 15 01:06 - crash  (01:17)
tanish   pts/0        (My Public IP)    Sat May 15 01:05 - crash  (01:18)
tanish   tty7         :0               Sat May 15 22:39 - crash  (05:19)

:0 是我用于 VNC 的显示器,tty7 与 VNC 终端有关。

当我在崩溃前检查 Syslogs 时,我发现 4/5 的崩溃都出现了这种情况,第 4 次崩溃是个例外。

May 14 06:17:01 (myservername) CRON[2046]: (root) CMD (   cd / && run-parts --report /etc/cron.hourly)
May 14 06:19:53 (myservername) systemd[1]: Starting Cleanup of Temporary Directories...
May 14 06:19:53 (myservername) systemd[1]: systemd-tmpfiles-clean.service: Succeeded.
May 14 06:19:53 (myservername) systemd[1]: Finished Cleanup of Temporary Directories.
May 14 06:25:02 (myservername) CRON[2065]: (root) CMD (test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily ))
May 14 06:26:11 (myservername) NetworkManager[745]: <info>  [1620973571.6512] manager: sleep: sleep requested (sleeping: no  enabled: yes)
May 14 06:26:11 (myservername) NetworkManager[745]: <info>  [1620973571.6516] manager: NetworkManager state is now ASLEEP
May 14 06:26:11 (myservername) ModemManager[776]: <info>  [sleep-monitor] system is about to suspend
May 14 06:26:11 (myservername) systemd[1]: Reached target Sleep.
May 14 06:26:11 (myservername) systemd[1]: Starting Suspend...
May 14 06:26:11 (myservername) kernel: [ 1304.854501] PM: suspend entry (s2idle)
May 14 06:26:11 (myservername) systemd-sleep[2068]: Suspending system...
Random @^@^@^s for like 12 lines
May 14 15:47:39 (myservername) kernel: [    0.000000] Linux version 5.11.0-17-generic (buildd@lcy01-amd64-002) (gcc (Ubuntu 10.3.0-1ubuntu1) 10.3.0, GNU ld (GNU Binutils for Ubuntu) 2.36.1) #18-Ubuntu SMP Thu May 6 20:10:11 UTC 2021 (Ubuntu 5.11.0-17.18-generic 5.11.12)

如果有人知道如何解决这个问题适用于 Ubuntu 21.04,我会感激任何帮助。运行的节点项目对时间非常敏感,停机 4 小时意味着客户会生气!提前致谢!

编辑:运行sudo systemd-inhibit返回:

WHO                          UID USER    PID  COMM            WHAT              WHY                                                       MODE
ModemManager                 0   root    787  ModemManager    sleep             ModemManager needs to reset devices                       delay
NetworkManager               0   root    707  NetworkManager  sleep             NetworkManager needs to turn off networks                 delay
UPower                       0   root    1310 upowerd         sleep             Pause device polling                                      delay
Unattended Upgrades Shutdown 0   root    824  unattended-upgr shutdown          Stop ongoing upgrades or perform upgrades before shutdown delay
lightdm                      113 lightdm 1262 unity-settings- handle-lid-switch Multiple displays attached                                block
lightdm                      113 lightdm 1212 unity-greeter   handle-power-key  Unity Greeter handling keypresses                         block
lightdm                      113 lightdm 1262 unity-settings- sleep             GNOME needs to lock the screen                            delay

7 inhibitors listed.

这也证实了系统日志显示网络管理器正在关闭服务器。

答案1

从日志中:

tanish   tty7         :0               Fri May 14 06:05 - crash  (09:41)

读作 06:05 开始时间 + 09:41 运行时间 = 15:46 崩溃时间,考虑到舍入误差,该值与重启时间相匹配:

May 14 06:26:11 (myservername) systemd-sleep[2068]: Suspending system...
Random @^@^@^s for like 12 lines
May 14 15:47:39 (myservername) kernel: [    0.000000]...

“崩溃”是因为服务器在睡眠期间重新启动。您真正的问题是 20 分钟后进入睡眠状态,这不是崩溃,但看起来像是。

网络管理员只是拖延来自其他东西的关机请求。我怀疑这是由空闲电源管理设置导致的。对于不在键盘旁的用户来说,“空闲”是一个误导性的名称。

如果您无法修复该问题,一种解决方法是在服务器上运行任何需要保持无人值守运行的程序:

systemd-inhibit COMMAND

阻止睡眠和关机请求,直到其完成。

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