当我systemctl status
在特定服务器上运行时,我得到以下输出:
● ⟨host-name⟩
State: degraded
Jobs: 0 queued
Failed: 1 units
Since: Fr 2017-06-09 00:34:27 UTC; 1 weeks 5 days ago
CGroup: /
…
我如何才能找出哪个服务失败了?
我尝试过systemctl is-failed '*'
,但没有产生任何有意义的输出(它输出active
一行39 行failed
,然后又输出一些(> 100)active
行...)。
答案1
尝试
sudo systemctl list-units --failed
或者
sudo systemctl list-units --state=failed
答案2
这似乎is-failed
是错误的子命令……谁能想到呢。
这里有一些 perl 技巧可以得到正确答案:
$ systemctl list-units | perl -lanE'print if $F[2] !~ /active/'
UNIT LOAD ACTIVE SUB DESCRIPTION
● vboxautostart-service.service loaded failed failed vboxautostart-service.service
LOAD = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB = The low-level unit activation state, values depend on unit type.
207 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.
并且systemctl
用信息输出来扰乱 stderr 也很好,这样我们只能得到我们想要的输出。