journalctl log disappear?












3















Service is still active:



systemctl -l status foo.service
● foo.service - My Foo service
Loaded: loaded (/etc/systemd/system/foo.service; static; vendor preset: disabled)
Active: activating (start) since Fri 2019-01-18 00:08:45 EST; 18h ago
Main PID: 29032 (bash)
CGroup: /system.slice/foo.service
├─ 4159 ssh: /root/....


This morning I was able to tail the logs with -f -u foo.service. But now I see this instead:



sudo journalctl -u foo.service
-- No entries --

sudo journalctl -f -u foo.service
-- Logs begin at Wed 2019-01-16 10:18:52 EST. --


I have another service (well, a timer to be exact) completed and log is also unavailable now.



How do I view old logs? I've tried using --since yesterday and _PID= for example, and it only returns to me system logs.










share|improve this question

























  • I hope it's not the recent bug/exploit

    – Jeff Schaller
    Jan 19 at 2:26











  • How have you proven that any journal entries at all prior to Wednesday even exist any more? How have you determined where your journal has rotated to?

    – JdeBP
    Jan 19 at 10:34











  • @JdeBP that's part of my question I am guessing: it seems like default on CentOS is saving to /run/log which according to some thread here it's volatile and not persistent.

    – CppLearner
    Jan 19 at 14:59


















3















Service is still active:



systemctl -l status foo.service
● foo.service - My Foo service
Loaded: loaded (/etc/systemd/system/foo.service; static; vendor preset: disabled)
Active: activating (start) since Fri 2019-01-18 00:08:45 EST; 18h ago
Main PID: 29032 (bash)
CGroup: /system.slice/foo.service
├─ 4159 ssh: /root/....


This morning I was able to tail the logs with -f -u foo.service. But now I see this instead:



sudo journalctl -u foo.service
-- No entries --

sudo journalctl -f -u foo.service
-- Logs begin at Wed 2019-01-16 10:18:52 EST. --


I have another service (well, a timer to be exact) completed and log is also unavailable now.



How do I view old logs? I've tried using --since yesterday and _PID= for example, and it only returns to me system logs.










share|improve this question

























  • I hope it's not the recent bug/exploit

    – Jeff Schaller
    Jan 19 at 2:26











  • How have you proven that any journal entries at all prior to Wednesday even exist any more? How have you determined where your journal has rotated to?

    – JdeBP
    Jan 19 at 10:34











  • @JdeBP that's part of my question I am guessing: it seems like default on CentOS is saving to /run/log which according to some thread here it's volatile and not persistent.

    – CppLearner
    Jan 19 at 14:59
















3












3








3








Service is still active:



systemctl -l status foo.service
● foo.service - My Foo service
Loaded: loaded (/etc/systemd/system/foo.service; static; vendor preset: disabled)
Active: activating (start) since Fri 2019-01-18 00:08:45 EST; 18h ago
Main PID: 29032 (bash)
CGroup: /system.slice/foo.service
├─ 4159 ssh: /root/....


This morning I was able to tail the logs with -f -u foo.service. But now I see this instead:



sudo journalctl -u foo.service
-- No entries --

sudo journalctl -f -u foo.service
-- Logs begin at Wed 2019-01-16 10:18:52 EST. --


I have another service (well, a timer to be exact) completed and log is also unavailable now.



How do I view old logs? I've tried using --since yesterday and _PID= for example, and it only returns to me system logs.










share|improve this question
















Service is still active:



systemctl -l status foo.service
● foo.service - My Foo service
Loaded: loaded (/etc/systemd/system/foo.service; static; vendor preset: disabled)
Active: activating (start) since Fri 2019-01-18 00:08:45 EST; 18h ago
Main PID: 29032 (bash)
CGroup: /system.slice/foo.service
├─ 4159 ssh: /root/....


This morning I was able to tail the logs with -f -u foo.service. But now I see this instead:



sudo journalctl -u foo.service
-- No entries --

sudo journalctl -f -u foo.service
-- Logs begin at Wed 2019-01-16 10:18:52 EST. --


I have another service (well, a timer to be exact) completed and log is also unavailable now.



How do I view old logs? I've tried using --since yesterday and _PID= for example, and it only returns to me system logs.







systemd systemd-journald






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Jan 19 at 0:22









Jeff Schaller

40.1k1054126




40.1k1054126










asked Jan 18 at 23:55









CppLearnerCppLearner

195210




195210













  • I hope it's not the recent bug/exploit

    – Jeff Schaller
    Jan 19 at 2:26











  • How have you proven that any journal entries at all prior to Wednesday even exist any more? How have you determined where your journal has rotated to?

    – JdeBP
    Jan 19 at 10:34











  • @JdeBP that's part of my question I am guessing: it seems like default on CentOS is saving to /run/log which according to some thread here it's volatile and not persistent.

    – CppLearner
    Jan 19 at 14:59





















  • I hope it's not the recent bug/exploit

    – Jeff Schaller
    Jan 19 at 2:26











  • How have you proven that any journal entries at all prior to Wednesday even exist any more? How have you determined where your journal has rotated to?

    – JdeBP
    Jan 19 at 10:34











  • @JdeBP that's part of my question I am guessing: it seems like default on CentOS is saving to /run/log which according to some thread here it's volatile and not persistent.

    – CppLearner
    Jan 19 at 14:59



















I hope it's not the recent bug/exploit

– Jeff Schaller
Jan 19 at 2:26





I hope it's not the recent bug/exploit

– Jeff Schaller
Jan 19 at 2:26













How have you proven that any journal entries at all prior to Wednesday even exist any more? How have you determined where your journal has rotated to?

– JdeBP
Jan 19 at 10:34





How have you proven that any journal entries at all prior to Wednesday even exist any more? How have you determined where your journal has rotated to?

– JdeBP
Jan 19 at 10:34













@JdeBP that's part of my question I am guessing: it seems like default on CentOS is saving to /run/log which according to some thread here it's volatile and not persistent.

– CppLearner
Jan 19 at 14:59







@JdeBP that's part of my question I am guessing: it seems like default on CentOS is saving to /run/log which according to some thread here it's volatile and not persistent.

– CppLearner
Jan 19 at 14:59












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