Systemd logs (`journalctl`) are too large and slowWhere is “journalctl” data stored?How do I stop /var/log/kern.log.1 from consuming all my disk space?what are system.journal and templates.datHow do you manage journald log history on ubuntu core 16Hard Drive too slowUbuntu 12.04 runs too slowUbuntu 14.04 is too slowHelp understanding and debugging slow boot with systemd network-online.targetSlow booting: systemd-udev-settle.serviceSystemd print logs to external log fileHow do i get a systemd unit to redirect or copy logs to syslog?Very slow boot time, seems to be caused mainly by systemd-udevd.serviceTime discrepancy between dmesg and journalctl -kOut of Space, Out of Space, Out of Space, Out of Space,

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Systemd logs (`journalctl`) are too large and slow


Where is “journalctl” data stored?How do I stop /var/log/kern.log.1 from consuming all my disk space?what are system.journal and templates.datHow do you manage journald log history on ubuntu core 16Hard Drive too slowUbuntu 12.04 runs too slowUbuntu 14.04 is too slowHelp understanding and debugging slow boot with systemd network-online.targetSlow booting: systemd-udev-settle.serviceSystemd print logs to external log fileHow do i get a systemd unit to redirect or copy logs to syslog?Very slow boot time, seems to be caused mainly by systemd-udevd.serviceTime discrepancy between dmesg and journalctl -kOut of Space, Out of Space, Out of Space, Out of Space,






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








12















My journalctl is keeping over 300 MB of logs as revealed by journalctl --disk-usage. Everything appears to be in order when I run journalctl --verify:



$ journalctl --disk-usage
Archived and active journals take up 328.0M on disk.

$ journalctl --verify
PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/system.journal
PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-65534.journal
PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/system@02f1aae76e32467390ab88ba03ae559e-0000000000000001-00056515dbdcd67e.journal
PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-1000.journal
PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-65534@9838f64d6ee047bebec9d30d329064d4-00000000000005bb-00056515dbfe8d9d.journal


I noticed how slow the system is when I pipe to grep from journalctl.



How can I sensibly reduce the size of what I'm keeping in journalctl?



Original .GIF image










share|improve this question






























    12















    My journalctl is keeping over 300 MB of logs as revealed by journalctl --disk-usage. Everything appears to be in order when I run journalctl --verify:



    $ journalctl --disk-usage
    Archived and active journals take up 328.0M on disk.

    $ journalctl --verify
    PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/system.journal
    PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-65534.journal
    PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/system@02f1aae76e32467390ab88ba03ae559e-0000000000000001-00056515dbdcd67e.journal
    PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-1000.journal
    PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-65534@9838f64d6ee047bebec9d30d329064d4-00000000000005bb-00056515dbfe8d9d.journal


    I noticed how slow the system is when I pipe to grep from journalctl.



    How can I sensibly reduce the size of what I'm keeping in journalctl?



    Original .GIF image










    share|improve this question


























      12












      12








      12


      5






      My journalctl is keeping over 300 MB of logs as revealed by journalctl --disk-usage. Everything appears to be in order when I run journalctl --verify:



      $ journalctl --disk-usage
      Archived and active journals take up 328.0M on disk.

      $ journalctl --verify
      PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/system.journal
      PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-65534.journal
      PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/system@02f1aae76e32467390ab88ba03ae559e-0000000000000001-00056515dbdcd67e.journal
      PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-1000.journal
      PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-65534@9838f64d6ee047bebec9d30d329064d4-00000000000005bb-00056515dbfe8d9d.journal


      I noticed how slow the system is when I pipe to grep from journalctl.



      How can I sensibly reduce the size of what I'm keeping in journalctl?



      Original .GIF image










      share|improve this question
















      My journalctl is keeping over 300 MB of logs as revealed by journalctl --disk-usage. Everything appears to be in order when I run journalctl --verify:



      $ journalctl --disk-usage
      Archived and active journals take up 328.0M on disk.

      $ journalctl --verify
      PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/system.journal
      PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-65534.journal
      PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/system@02f1aae76e32467390ab88ba03ae559e-0000000000000001-00056515dbdcd67e.journal
      PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-1000.journal
      PASS: /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-65534@9838f64d6ee047bebec9d30d329064d4-00000000000005bb-00056515dbfe8d9d.journal


      I noticed how slow the system is when I pipe to grep from journalctl.



      How can I sensibly reduce the size of what I'm keeping in journalctl?



      Original .GIF image







      command-line performance disk-usage systemd systemd-journald






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Mar 26 '18 at 20:07







      WinEunuuchs2Unix

















      asked Mar 8 '18 at 1:13









      WinEunuuchs2UnixWinEunuuchs2Unix

      50.7k13100197




      50.7k13100197




















          2 Answers
          2






          active

          oldest

          votes


















          15















          systemd comes with a nifty vacuum cleaner



          To limit log files to a specific size systemd provides a vacuum feature to "suck out" older information from log files. The parameters allowed are:



           --vacuum-size=BYTES Reduce disk usage below specified size
          --vacuum-files=INT Leave only the specified number of journal files
          --vacuum-time=TIME Remove journal files older than specified time


          For example to reduce 312 MB consumption down to 200 MB (or less) use:



          $ journalctl --vacuum-size=200M
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/system@00056515dbdd9a4e-a6fe2ec77e516045.journal~ (56.0M).
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-65534@00056515dbfe731d-b7bab56cb4efcbf6.journal~ (8.0M).
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-1000@1bbb77599cf14c65a18af51646751696-000000000000064f-00056444d58433e1.journal (112.0M).
          Vacuuming done, freed 176.0M of archived journals on disk.


          Disk Space saved



          The journalctl size is reduced substantially:



          $ journalctl --disk-usage
          Archived and active journals take up 136.0M on disk.


          Size has dropped from 312 MB to 136 MB a savings of 176 MB and 64 MB more than expected. This is probably a one time anomaly due to an extraordinary large single log file. I'll revise this answer after a month if new info arises.



          Boot Logs reduced



          The number of journalctl boot logs was 32 but now it is reduced to 26:



          $ journalctl --list-boots
          -26 0f230cc546fd4aec8f5233e0074ab3e1 Tue 2018-02-13 03:57:20 MST—Wed 2018-02-14
          -25 c0d2c0141dd840cbab75d3c2254f8781 Wed 2018-02-14 22:59:13 MST—Sat 2018-02-17
          -24 aafb2573a6374e019a7165cb8eee74a0 Sun 2018-02-18 06:02:03 MST—Mon 2018-02-19
          -23 8462f1969c6f4d61973e7e245014b846 Mon 2018-02-19 04:16:53 MST—Sat 2018-02-24
          -22 7f71ac2fb9714c49aa05989b741655f2 Sat 2018-02-24 04:24:36 MST—Sat 2018-02-24
          -21 b12a48c363474e5fb39311a166a98d54 Sat 2018-02-24 04:28:09 MST—Sun 2018-02-25
          -20 fbef1e659de64a0cbdcb9994f5a39457 Sun 2018-02-25 17:48:20 MST—Mon 2018-02-26
          -19 3d9b4c10f98d4ef7aab1cb2baa9b74e1 Mon 2018-02-26 08:37:01 MST—Mon 2018-02-26
          -18 4412b117dcc648aa9eceabcd0f205207 Mon 2018-02-26 08:38:00 MST—Mon 2018-02-26
          -17 f6794cbb7fb24213a6f2c3e368f666a1 Mon 2018-02-26 08:39:12 MST—Mon 2018-02-26
          -16 472f968506ed446ab12cf7abc65fa81a Mon 2018-02-26 08:49:37 MST—Mon 2018-02-26
          -15 d575c609d82e4ecd8dcebb70d40160d7 Mon 2018-02-26 17:07:36 MST—Mon 2018-02-26
          -14 878cfd9239a84dae80c62e7413c72951 Mon 2018-02-26 17:24:54 MST—Mon 2018-02-26
          -13 7f9913c7dbff46ab9bbd7c2cbefc4d7d Mon 2018-02-26 17:35:19 MST—Mon 2018-02-26
          -12 bf90829ef13a4e9fa1794bf0a88f4033 Mon 2018-02-26 17:45:12 MST—Wed 2018-02-28
          -11 fb879a836c7c459ab27f6332bee6013b Wed 2018-02-28 03:56:29 MST—Wed 2018-02-28
          -10 b0fec230765046f5bf3d654db1dc13ee Wed 2018-02-28 20:03:15 MST—Thu 2018-03-01
          -9 72a2d6789eab4396be16348d9ead0408 Thu 2018-03-01 03:58:25 MST—Fri 2018-03-02
          -8 8bccdc9b16124d26af05c34c8a30a0f5 Fri 2018-03-02 16:54:36 MST—Sat 2018-03-03
          -7 40c2875db30349f5a9b1dfc849a47c05 Sat 2018-03-03 10:03:48 MST—Sat 2018-03-03
          -6 781c79d2ec7946afba0fa2300e8ebe56 Sat 2018-03-03 10:04:34 MST—Sat 2018-03-03
          -5 bb66dc875e414021940b7233072516d2 Sat 2018-03-03 17:43:08 MST—Tue 2018-03-06
          -4 ba3bcfdc71584757b8bef9df16e7b0f6 Tue 2018-03-06 16:56:36 MST—Tue 2018-03-06
          -3 60faa0fda99a4ef4b14b73c412d69e50 Tue 2018-03-06 17:00:47 MST—Tue 2018-03-06
          -2 9b317bb8403344ca84dd2f288bc90410 Tue 2018-03-06 17:02:15 MST—Tue 2018-03-06
          -1 dcb126be665a4531aae4312af7e51a34 Tue 2018-03-06 17:09:00 MST—Tue 2018-03-06
          0 6a105af650d5442a9b03004165e58adf Tue 2018-03-06 17:42:45 MST—Wed 2018-03-07


          Performance improved



          The time to verify journalctl integrity is noticeably quicker:



          journalctl verify 2.png



          Time has reduced from 10 seconds down to 4 seconds.



          Credit to this Source




          Long Term Solutions



          I've created a cron job to run the vacuum cleaner once a month.



          Another option as mentioned in comments is to set SystemMaxUse=50M in /etc/systemd/journald.conf. There are actually four different places you can set the option:



          /etc/systemd/journald.conf
          /etc/systemd/journald.conf.d/*.conf
          /run/systemd/journald.conf.d/*.conf
          /usr/lib/systemd/journald.conf.d/*.conf


          There are actually many options you can use for similar goals:



          SystemMaxUse=, SystemKeepFree=, SystemMaxFileSize=, SystemMaxFiles=, RuntimeMaxUse=, RuntimeKeepFree=, RuntimeMaxFileSize=, RuntimeMaxFiles=





          share|improve this answer

























          • This is a temporary fix, not a permanent solution. You should mention /etc/systemd/journald.conf SystemMaxUse=50M

            – phiresky
            May 21 at 20:05












          • @phiresky Thanks for pointing this out. I've updated the answer.

            – WinEunuuchs2Unix
            May 21 at 23:11


















          1














          You can instruct journalctl to display a smaller quantity of stuff. There are various ways of doing this, such as:




          • -u [unit] or --unit=[unit]: this tells journalctl to only display logs from a systemd unit. You could, for example, type journalctl -u NetworkManager.service, and you'll get logs from NetworkManager.


          • -s [time] or --since=[time]: This tells journalctl to ignore any entries from before a certain time, specified as yyyy-mm-dd hh:mm:ss. If you want to leave out the time, journalctl will use 00:00:00. Also, if you leave out the date, journalctl will use the current date. Here's an example, taken from the man page: journalctl -s 2012-10-30 18:17:16.


          • -U [time] or --until=[time]: this is quite similar to the above, except it omits entries from after than the specified time. Arguments and syntax are the same.


          • -n [x] or --lines [x]: limits the number of output lines, where "x" is an integer. If you type journalctl -n 12, only the twelve most recent logs will be displayed.

          You can also reduce the amount of data retained, but WinEunuuchs2Unix already pointed that out, so I won't waste time repeating that information.






          share|improve this answer























          • Looks like journalctl has a wealth of options and someone should write a zenity or yad front end with GUI drop down menus and radio buttons / check boxes to filter with. I am kind of tempted myself. +1 even though answer strays off spirit of question :)

            – WinEunuuchs2Unix
            Apr 14 at 0:04












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          2 Answers
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          active

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          2 Answers
          2






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          15















          systemd comes with a nifty vacuum cleaner



          To limit log files to a specific size systemd provides a vacuum feature to "suck out" older information from log files. The parameters allowed are:



           --vacuum-size=BYTES Reduce disk usage below specified size
          --vacuum-files=INT Leave only the specified number of journal files
          --vacuum-time=TIME Remove journal files older than specified time


          For example to reduce 312 MB consumption down to 200 MB (or less) use:



          $ journalctl --vacuum-size=200M
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/system@00056515dbdd9a4e-a6fe2ec77e516045.journal~ (56.0M).
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-65534@00056515dbfe731d-b7bab56cb4efcbf6.journal~ (8.0M).
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-1000@1bbb77599cf14c65a18af51646751696-000000000000064f-00056444d58433e1.journal (112.0M).
          Vacuuming done, freed 176.0M of archived journals on disk.


          Disk Space saved



          The journalctl size is reduced substantially:



          $ journalctl --disk-usage
          Archived and active journals take up 136.0M on disk.


          Size has dropped from 312 MB to 136 MB a savings of 176 MB and 64 MB more than expected. This is probably a one time anomaly due to an extraordinary large single log file. I'll revise this answer after a month if new info arises.



          Boot Logs reduced



          The number of journalctl boot logs was 32 but now it is reduced to 26:



          $ journalctl --list-boots
          -26 0f230cc546fd4aec8f5233e0074ab3e1 Tue 2018-02-13 03:57:20 MST—Wed 2018-02-14
          -25 c0d2c0141dd840cbab75d3c2254f8781 Wed 2018-02-14 22:59:13 MST—Sat 2018-02-17
          -24 aafb2573a6374e019a7165cb8eee74a0 Sun 2018-02-18 06:02:03 MST—Mon 2018-02-19
          -23 8462f1969c6f4d61973e7e245014b846 Mon 2018-02-19 04:16:53 MST—Sat 2018-02-24
          -22 7f71ac2fb9714c49aa05989b741655f2 Sat 2018-02-24 04:24:36 MST—Sat 2018-02-24
          -21 b12a48c363474e5fb39311a166a98d54 Sat 2018-02-24 04:28:09 MST—Sun 2018-02-25
          -20 fbef1e659de64a0cbdcb9994f5a39457 Sun 2018-02-25 17:48:20 MST—Mon 2018-02-26
          -19 3d9b4c10f98d4ef7aab1cb2baa9b74e1 Mon 2018-02-26 08:37:01 MST—Mon 2018-02-26
          -18 4412b117dcc648aa9eceabcd0f205207 Mon 2018-02-26 08:38:00 MST—Mon 2018-02-26
          -17 f6794cbb7fb24213a6f2c3e368f666a1 Mon 2018-02-26 08:39:12 MST—Mon 2018-02-26
          -16 472f968506ed446ab12cf7abc65fa81a Mon 2018-02-26 08:49:37 MST—Mon 2018-02-26
          -15 d575c609d82e4ecd8dcebb70d40160d7 Mon 2018-02-26 17:07:36 MST—Mon 2018-02-26
          -14 878cfd9239a84dae80c62e7413c72951 Mon 2018-02-26 17:24:54 MST—Mon 2018-02-26
          -13 7f9913c7dbff46ab9bbd7c2cbefc4d7d Mon 2018-02-26 17:35:19 MST—Mon 2018-02-26
          -12 bf90829ef13a4e9fa1794bf0a88f4033 Mon 2018-02-26 17:45:12 MST—Wed 2018-02-28
          -11 fb879a836c7c459ab27f6332bee6013b Wed 2018-02-28 03:56:29 MST—Wed 2018-02-28
          -10 b0fec230765046f5bf3d654db1dc13ee Wed 2018-02-28 20:03:15 MST—Thu 2018-03-01
          -9 72a2d6789eab4396be16348d9ead0408 Thu 2018-03-01 03:58:25 MST—Fri 2018-03-02
          -8 8bccdc9b16124d26af05c34c8a30a0f5 Fri 2018-03-02 16:54:36 MST—Sat 2018-03-03
          -7 40c2875db30349f5a9b1dfc849a47c05 Sat 2018-03-03 10:03:48 MST—Sat 2018-03-03
          -6 781c79d2ec7946afba0fa2300e8ebe56 Sat 2018-03-03 10:04:34 MST—Sat 2018-03-03
          -5 bb66dc875e414021940b7233072516d2 Sat 2018-03-03 17:43:08 MST—Tue 2018-03-06
          -4 ba3bcfdc71584757b8bef9df16e7b0f6 Tue 2018-03-06 16:56:36 MST—Tue 2018-03-06
          -3 60faa0fda99a4ef4b14b73c412d69e50 Tue 2018-03-06 17:00:47 MST—Tue 2018-03-06
          -2 9b317bb8403344ca84dd2f288bc90410 Tue 2018-03-06 17:02:15 MST—Tue 2018-03-06
          -1 dcb126be665a4531aae4312af7e51a34 Tue 2018-03-06 17:09:00 MST—Tue 2018-03-06
          0 6a105af650d5442a9b03004165e58adf Tue 2018-03-06 17:42:45 MST—Wed 2018-03-07


          Performance improved



          The time to verify journalctl integrity is noticeably quicker:



          journalctl verify 2.png



          Time has reduced from 10 seconds down to 4 seconds.



          Credit to this Source




          Long Term Solutions



          I've created a cron job to run the vacuum cleaner once a month.



          Another option as mentioned in comments is to set SystemMaxUse=50M in /etc/systemd/journald.conf. There are actually four different places you can set the option:



          /etc/systemd/journald.conf
          /etc/systemd/journald.conf.d/*.conf
          /run/systemd/journald.conf.d/*.conf
          /usr/lib/systemd/journald.conf.d/*.conf


          There are actually many options you can use for similar goals:



          SystemMaxUse=, SystemKeepFree=, SystemMaxFileSize=, SystemMaxFiles=, RuntimeMaxUse=, RuntimeKeepFree=, RuntimeMaxFileSize=, RuntimeMaxFiles=





          share|improve this answer

























          • This is a temporary fix, not a permanent solution. You should mention /etc/systemd/journald.conf SystemMaxUse=50M

            – phiresky
            May 21 at 20:05












          • @phiresky Thanks for pointing this out. I've updated the answer.

            – WinEunuuchs2Unix
            May 21 at 23:11















          15















          systemd comes with a nifty vacuum cleaner



          To limit log files to a specific size systemd provides a vacuum feature to "suck out" older information from log files. The parameters allowed are:



           --vacuum-size=BYTES Reduce disk usage below specified size
          --vacuum-files=INT Leave only the specified number of journal files
          --vacuum-time=TIME Remove journal files older than specified time


          For example to reduce 312 MB consumption down to 200 MB (or less) use:



          $ journalctl --vacuum-size=200M
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/system@00056515dbdd9a4e-a6fe2ec77e516045.journal~ (56.0M).
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-65534@00056515dbfe731d-b7bab56cb4efcbf6.journal~ (8.0M).
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-1000@1bbb77599cf14c65a18af51646751696-000000000000064f-00056444d58433e1.journal (112.0M).
          Vacuuming done, freed 176.0M of archived journals on disk.


          Disk Space saved



          The journalctl size is reduced substantially:



          $ journalctl --disk-usage
          Archived and active journals take up 136.0M on disk.


          Size has dropped from 312 MB to 136 MB a savings of 176 MB and 64 MB more than expected. This is probably a one time anomaly due to an extraordinary large single log file. I'll revise this answer after a month if new info arises.



          Boot Logs reduced



          The number of journalctl boot logs was 32 but now it is reduced to 26:



          $ journalctl --list-boots
          -26 0f230cc546fd4aec8f5233e0074ab3e1 Tue 2018-02-13 03:57:20 MST—Wed 2018-02-14
          -25 c0d2c0141dd840cbab75d3c2254f8781 Wed 2018-02-14 22:59:13 MST—Sat 2018-02-17
          -24 aafb2573a6374e019a7165cb8eee74a0 Sun 2018-02-18 06:02:03 MST—Mon 2018-02-19
          -23 8462f1969c6f4d61973e7e245014b846 Mon 2018-02-19 04:16:53 MST—Sat 2018-02-24
          -22 7f71ac2fb9714c49aa05989b741655f2 Sat 2018-02-24 04:24:36 MST—Sat 2018-02-24
          -21 b12a48c363474e5fb39311a166a98d54 Sat 2018-02-24 04:28:09 MST—Sun 2018-02-25
          -20 fbef1e659de64a0cbdcb9994f5a39457 Sun 2018-02-25 17:48:20 MST—Mon 2018-02-26
          -19 3d9b4c10f98d4ef7aab1cb2baa9b74e1 Mon 2018-02-26 08:37:01 MST—Mon 2018-02-26
          -18 4412b117dcc648aa9eceabcd0f205207 Mon 2018-02-26 08:38:00 MST—Mon 2018-02-26
          -17 f6794cbb7fb24213a6f2c3e368f666a1 Mon 2018-02-26 08:39:12 MST—Mon 2018-02-26
          -16 472f968506ed446ab12cf7abc65fa81a Mon 2018-02-26 08:49:37 MST—Mon 2018-02-26
          -15 d575c609d82e4ecd8dcebb70d40160d7 Mon 2018-02-26 17:07:36 MST—Mon 2018-02-26
          -14 878cfd9239a84dae80c62e7413c72951 Mon 2018-02-26 17:24:54 MST—Mon 2018-02-26
          -13 7f9913c7dbff46ab9bbd7c2cbefc4d7d Mon 2018-02-26 17:35:19 MST—Mon 2018-02-26
          -12 bf90829ef13a4e9fa1794bf0a88f4033 Mon 2018-02-26 17:45:12 MST—Wed 2018-02-28
          -11 fb879a836c7c459ab27f6332bee6013b Wed 2018-02-28 03:56:29 MST—Wed 2018-02-28
          -10 b0fec230765046f5bf3d654db1dc13ee Wed 2018-02-28 20:03:15 MST—Thu 2018-03-01
          -9 72a2d6789eab4396be16348d9ead0408 Thu 2018-03-01 03:58:25 MST—Fri 2018-03-02
          -8 8bccdc9b16124d26af05c34c8a30a0f5 Fri 2018-03-02 16:54:36 MST—Sat 2018-03-03
          -7 40c2875db30349f5a9b1dfc849a47c05 Sat 2018-03-03 10:03:48 MST—Sat 2018-03-03
          -6 781c79d2ec7946afba0fa2300e8ebe56 Sat 2018-03-03 10:04:34 MST—Sat 2018-03-03
          -5 bb66dc875e414021940b7233072516d2 Sat 2018-03-03 17:43:08 MST—Tue 2018-03-06
          -4 ba3bcfdc71584757b8bef9df16e7b0f6 Tue 2018-03-06 16:56:36 MST—Tue 2018-03-06
          -3 60faa0fda99a4ef4b14b73c412d69e50 Tue 2018-03-06 17:00:47 MST—Tue 2018-03-06
          -2 9b317bb8403344ca84dd2f288bc90410 Tue 2018-03-06 17:02:15 MST—Tue 2018-03-06
          -1 dcb126be665a4531aae4312af7e51a34 Tue 2018-03-06 17:09:00 MST—Tue 2018-03-06
          0 6a105af650d5442a9b03004165e58adf Tue 2018-03-06 17:42:45 MST—Wed 2018-03-07


          Performance improved



          The time to verify journalctl integrity is noticeably quicker:



          journalctl verify 2.png



          Time has reduced from 10 seconds down to 4 seconds.



          Credit to this Source




          Long Term Solutions



          I've created a cron job to run the vacuum cleaner once a month.



          Another option as mentioned in comments is to set SystemMaxUse=50M in /etc/systemd/journald.conf. There are actually four different places you can set the option:



          /etc/systemd/journald.conf
          /etc/systemd/journald.conf.d/*.conf
          /run/systemd/journald.conf.d/*.conf
          /usr/lib/systemd/journald.conf.d/*.conf


          There are actually many options you can use for similar goals:



          SystemMaxUse=, SystemKeepFree=, SystemMaxFileSize=, SystemMaxFiles=, RuntimeMaxUse=, RuntimeKeepFree=, RuntimeMaxFileSize=, RuntimeMaxFiles=





          share|improve this answer

























          • This is a temporary fix, not a permanent solution. You should mention /etc/systemd/journald.conf SystemMaxUse=50M

            – phiresky
            May 21 at 20:05












          • @phiresky Thanks for pointing this out. I've updated the answer.

            – WinEunuuchs2Unix
            May 21 at 23:11













          15












          15








          15








          systemd comes with a nifty vacuum cleaner



          To limit log files to a specific size systemd provides a vacuum feature to "suck out" older information from log files. The parameters allowed are:



           --vacuum-size=BYTES Reduce disk usage below specified size
          --vacuum-files=INT Leave only the specified number of journal files
          --vacuum-time=TIME Remove journal files older than specified time


          For example to reduce 312 MB consumption down to 200 MB (or less) use:



          $ journalctl --vacuum-size=200M
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/system@00056515dbdd9a4e-a6fe2ec77e516045.journal~ (56.0M).
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-65534@00056515dbfe731d-b7bab56cb4efcbf6.journal~ (8.0M).
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-1000@1bbb77599cf14c65a18af51646751696-000000000000064f-00056444d58433e1.journal (112.0M).
          Vacuuming done, freed 176.0M of archived journals on disk.


          Disk Space saved



          The journalctl size is reduced substantially:



          $ journalctl --disk-usage
          Archived and active journals take up 136.0M on disk.


          Size has dropped from 312 MB to 136 MB a savings of 176 MB and 64 MB more than expected. This is probably a one time anomaly due to an extraordinary large single log file. I'll revise this answer after a month if new info arises.



          Boot Logs reduced



          The number of journalctl boot logs was 32 but now it is reduced to 26:



          $ journalctl --list-boots
          -26 0f230cc546fd4aec8f5233e0074ab3e1 Tue 2018-02-13 03:57:20 MST—Wed 2018-02-14
          -25 c0d2c0141dd840cbab75d3c2254f8781 Wed 2018-02-14 22:59:13 MST—Sat 2018-02-17
          -24 aafb2573a6374e019a7165cb8eee74a0 Sun 2018-02-18 06:02:03 MST—Mon 2018-02-19
          -23 8462f1969c6f4d61973e7e245014b846 Mon 2018-02-19 04:16:53 MST—Sat 2018-02-24
          -22 7f71ac2fb9714c49aa05989b741655f2 Sat 2018-02-24 04:24:36 MST—Sat 2018-02-24
          -21 b12a48c363474e5fb39311a166a98d54 Sat 2018-02-24 04:28:09 MST—Sun 2018-02-25
          -20 fbef1e659de64a0cbdcb9994f5a39457 Sun 2018-02-25 17:48:20 MST—Mon 2018-02-26
          -19 3d9b4c10f98d4ef7aab1cb2baa9b74e1 Mon 2018-02-26 08:37:01 MST—Mon 2018-02-26
          -18 4412b117dcc648aa9eceabcd0f205207 Mon 2018-02-26 08:38:00 MST—Mon 2018-02-26
          -17 f6794cbb7fb24213a6f2c3e368f666a1 Mon 2018-02-26 08:39:12 MST—Mon 2018-02-26
          -16 472f968506ed446ab12cf7abc65fa81a Mon 2018-02-26 08:49:37 MST—Mon 2018-02-26
          -15 d575c609d82e4ecd8dcebb70d40160d7 Mon 2018-02-26 17:07:36 MST—Mon 2018-02-26
          -14 878cfd9239a84dae80c62e7413c72951 Mon 2018-02-26 17:24:54 MST—Mon 2018-02-26
          -13 7f9913c7dbff46ab9bbd7c2cbefc4d7d Mon 2018-02-26 17:35:19 MST—Mon 2018-02-26
          -12 bf90829ef13a4e9fa1794bf0a88f4033 Mon 2018-02-26 17:45:12 MST—Wed 2018-02-28
          -11 fb879a836c7c459ab27f6332bee6013b Wed 2018-02-28 03:56:29 MST—Wed 2018-02-28
          -10 b0fec230765046f5bf3d654db1dc13ee Wed 2018-02-28 20:03:15 MST—Thu 2018-03-01
          -9 72a2d6789eab4396be16348d9ead0408 Thu 2018-03-01 03:58:25 MST—Fri 2018-03-02
          -8 8bccdc9b16124d26af05c34c8a30a0f5 Fri 2018-03-02 16:54:36 MST—Sat 2018-03-03
          -7 40c2875db30349f5a9b1dfc849a47c05 Sat 2018-03-03 10:03:48 MST—Sat 2018-03-03
          -6 781c79d2ec7946afba0fa2300e8ebe56 Sat 2018-03-03 10:04:34 MST—Sat 2018-03-03
          -5 bb66dc875e414021940b7233072516d2 Sat 2018-03-03 17:43:08 MST—Tue 2018-03-06
          -4 ba3bcfdc71584757b8bef9df16e7b0f6 Tue 2018-03-06 16:56:36 MST—Tue 2018-03-06
          -3 60faa0fda99a4ef4b14b73c412d69e50 Tue 2018-03-06 17:00:47 MST—Tue 2018-03-06
          -2 9b317bb8403344ca84dd2f288bc90410 Tue 2018-03-06 17:02:15 MST—Tue 2018-03-06
          -1 dcb126be665a4531aae4312af7e51a34 Tue 2018-03-06 17:09:00 MST—Tue 2018-03-06
          0 6a105af650d5442a9b03004165e58adf Tue 2018-03-06 17:42:45 MST—Wed 2018-03-07


          Performance improved



          The time to verify journalctl integrity is noticeably quicker:



          journalctl verify 2.png



          Time has reduced from 10 seconds down to 4 seconds.



          Credit to this Source




          Long Term Solutions



          I've created a cron job to run the vacuum cleaner once a month.



          Another option as mentioned in comments is to set SystemMaxUse=50M in /etc/systemd/journald.conf. There are actually four different places you can set the option:



          /etc/systemd/journald.conf
          /etc/systemd/journald.conf.d/*.conf
          /run/systemd/journald.conf.d/*.conf
          /usr/lib/systemd/journald.conf.d/*.conf


          There are actually many options you can use for similar goals:



          SystemMaxUse=, SystemKeepFree=, SystemMaxFileSize=, SystemMaxFiles=, RuntimeMaxUse=, RuntimeKeepFree=, RuntimeMaxFileSize=, RuntimeMaxFiles=





          share|improve this answer
















          systemd comes with a nifty vacuum cleaner



          To limit log files to a specific size systemd provides a vacuum feature to "suck out" older information from log files. The parameters allowed are:



           --vacuum-size=BYTES Reduce disk usage below specified size
          --vacuum-files=INT Leave only the specified number of journal files
          --vacuum-time=TIME Remove journal files older than specified time


          For example to reduce 312 MB consumption down to 200 MB (or less) use:



          $ journalctl --vacuum-size=200M
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/system@00056515dbdd9a4e-a6fe2ec77e516045.journal~ (56.0M).
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-65534@00056515dbfe731d-b7bab56cb4efcbf6.journal~ (8.0M).
          Deleted archived journal /var/log/journal/d7b25a27fe064cadb75a2f2f6ca7764e/user-1000@1bbb77599cf14c65a18af51646751696-000000000000064f-00056444d58433e1.journal (112.0M).
          Vacuuming done, freed 176.0M of archived journals on disk.


          Disk Space saved



          The journalctl size is reduced substantially:



          $ journalctl --disk-usage
          Archived and active journals take up 136.0M on disk.


          Size has dropped from 312 MB to 136 MB a savings of 176 MB and 64 MB more than expected. This is probably a one time anomaly due to an extraordinary large single log file. I'll revise this answer after a month if new info arises.



          Boot Logs reduced



          The number of journalctl boot logs was 32 but now it is reduced to 26:



          $ journalctl --list-boots
          -26 0f230cc546fd4aec8f5233e0074ab3e1 Tue 2018-02-13 03:57:20 MST—Wed 2018-02-14
          -25 c0d2c0141dd840cbab75d3c2254f8781 Wed 2018-02-14 22:59:13 MST—Sat 2018-02-17
          -24 aafb2573a6374e019a7165cb8eee74a0 Sun 2018-02-18 06:02:03 MST—Mon 2018-02-19
          -23 8462f1969c6f4d61973e7e245014b846 Mon 2018-02-19 04:16:53 MST—Sat 2018-02-24
          -22 7f71ac2fb9714c49aa05989b741655f2 Sat 2018-02-24 04:24:36 MST—Sat 2018-02-24
          -21 b12a48c363474e5fb39311a166a98d54 Sat 2018-02-24 04:28:09 MST—Sun 2018-02-25
          -20 fbef1e659de64a0cbdcb9994f5a39457 Sun 2018-02-25 17:48:20 MST—Mon 2018-02-26
          -19 3d9b4c10f98d4ef7aab1cb2baa9b74e1 Mon 2018-02-26 08:37:01 MST—Mon 2018-02-26
          -18 4412b117dcc648aa9eceabcd0f205207 Mon 2018-02-26 08:38:00 MST—Mon 2018-02-26
          -17 f6794cbb7fb24213a6f2c3e368f666a1 Mon 2018-02-26 08:39:12 MST—Mon 2018-02-26
          -16 472f968506ed446ab12cf7abc65fa81a Mon 2018-02-26 08:49:37 MST—Mon 2018-02-26
          -15 d575c609d82e4ecd8dcebb70d40160d7 Mon 2018-02-26 17:07:36 MST—Mon 2018-02-26
          -14 878cfd9239a84dae80c62e7413c72951 Mon 2018-02-26 17:24:54 MST—Mon 2018-02-26
          -13 7f9913c7dbff46ab9bbd7c2cbefc4d7d Mon 2018-02-26 17:35:19 MST—Mon 2018-02-26
          -12 bf90829ef13a4e9fa1794bf0a88f4033 Mon 2018-02-26 17:45:12 MST—Wed 2018-02-28
          -11 fb879a836c7c459ab27f6332bee6013b Wed 2018-02-28 03:56:29 MST—Wed 2018-02-28
          -10 b0fec230765046f5bf3d654db1dc13ee Wed 2018-02-28 20:03:15 MST—Thu 2018-03-01
          -9 72a2d6789eab4396be16348d9ead0408 Thu 2018-03-01 03:58:25 MST—Fri 2018-03-02
          -8 8bccdc9b16124d26af05c34c8a30a0f5 Fri 2018-03-02 16:54:36 MST—Sat 2018-03-03
          -7 40c2875db30349f5a9b1dfc849a47c05 Sat 2018-03-03 10:03:48 MST—Sat 2018-03-03
          -6 781c79d2ec7946afba0fa2300e8ebe56 Sat 2018-03-03 10:04:34 MST—Sat 2018-03-03
          -5 bb66dc875e414021940b7233072516d2 Sat 2018-03-03 17:43:08 MST—Tue 2018-03-06
          -4 ba3bcfdc71584757b8bef9df16e7b0f6 Tue 2018-03-06 16:56:36 MST—Tue 2018-03-06
          -3 60faa0fda99a4ef4b14b73c412d69e50 Tue 2018-03-06 17:00:47 MST—Tue 2018-03-06
          -2 9b317bb8403344ca84dd2f288bc90410 Tue 2018-03-06 17:02:15 MST—Tue 2018-03-06
          -1 dcb126be665a4531aae4312af7e51a34 Tue 2018-03-06 17:09:00 MST—Tue 2018-03-06
          0 6a105af650d5442a9b03004165e58adf Tue 2018-03-06 17:42:45 MST—Wed 2018-03-07


          Performance improved



          The time to verify journalctl integrity is noticeably quicker:



          journalctl verify 2.png



          Time has reduced from 10 seconds down to 4 seconds.



          Credit to this Source




          Long Term Solutions



          I've created a cron job to run the vacuum cleaner once a month.



          Another option as mentioned in comments is to set SystemMaxUse=50M in /etc/systemd/journald.conf. There are actually four different places you can set the option:



          /etc/systemd/journald.conf
          /etc/systemd/journald.conf.d/*.conf
          /run/systemd/journald.conf.d/*.conf
          /usr/lib/systemd/journald.conf.d/*.conf


          There are actually many options you can use for similar goals:



          SystemMaxUse=, SystemKeepFree=, SystemMaxFileSize=, SystemMaxFiles=, RuntimeMaxUse=, RuntimeKeepFree=, RuntimeMaxFileSize=, RuntimeMaxFiles=






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited May 21 at 23:11

























          answered Mar 8 '18 at 1:13









          WinEunuuchs2UnixWinEunuuchs2Unix

          50.7k13100197




          50.7k13100197












          • This is a temporary fix, not a permanent solution. You should mention /etc/systemd/journald.conf SystemMaxUse=50M

            – phiresky
            May 21 at 20:05












          • @phiresky Thanks for pointing this out. I've updated the answer.

            – WinEunuuchs2Unix
            May 21 at 23:11

















          • This is a temporary fix, not a permanent solution. You should mention /etc/systemd/journald.conf SystemMaxUse=50M

            – phiresky
            May 21 at 20:05












          • @phiresky Thanks for pointing this out. I've updated the answer.

            – WinEunuuchs2Unix
            May 21 at 23:11
















          This is a temporary fix, not a permanent solution. You should mention /etc/systemd/journald.conf SystemMaxUse=50M

          – phiresky
          May 21 at 20:05






          This is a temporary fix, not a permanent solution. You should mention /etc/systemd/journald.conf SystemMaxUse=50M

          – phiresky
          May 21 at 20:05














          @phiresky Thanks for pointing this out. I've updated the answer.

          – WinEunuuchs2Unix
          May 21 at 23:11





          @phiresky Thanks for pointing this out. I've updated the answer.

          – WinEunuuchs2Unix
          May 21 at 23:11













          1














          You can instruct journalctl to display a smaller quantity of stuff. There are various ways of doing this, such as:




          • -u [unit] or --unit=[unit]: this tells journalctl to only display logs from a systemd unit. You could, for example, type journalctl -u NetworkManager.service, and you'll get logs from NetworkManager.


          • -s [time] or --since=[time]: This tells journalctl to ignore any entries from before a certain time, specified as yyyy-mm-dd hh:mm:ss. If you want to leave out the time, journalctl will use 00:00:00. Also, if you leave out the date, journalctl will use the current date. Here's an example, taken from the man page: journalctl -s 2012-10-30 18:17:16.


          • -U [time] or --until=[time]: this is quite similar to the above, except it omits entries from after than the specified time. Arguments and syntax are the same.


          • -n [x] or --lines [x]: limits the number of output lines, where "x" is an integer. If you type journalctl -n 12, only the twelve most recent logs will be displayed.

          You can also reduce the amount of data retained, but WinEunuuchs2Unix already pointed that out, so I won't waste time repeating that information.






          share|improve this answer























          • Looks like journalctl has a wealth of options and someone should write a zenity or yad front end with GUI drop down menus and radio buttons / check boxes to filter with. I am kind of tempted myself. +1 even though answer strays off spirit of question :)

            – WinEunuuchs2Unix
            Apr 14 at 0:04
















          1














          You can instruct journalctl to display a smaller quantity of stuff. There are various ways of doing this, such as:




          • -u [unit] or --unit=[unit]: this tells journalctl to only display logs from a systemd unit. You could, for example, type journalctl -u NetworkManager.service, and you'll get logs from NetworkManager.


          • -s [time] or --since=[time]: This tells journalctl to ignore any entries from before a certain time, specified as yyyy-mm-dd hh:mm:ss. If you want to leave out the time, journalctl will use 00:00:00. Also, if you leave out the date, journalctl will use the current date. Here's an example, taken from the man page: journalctl -s 2012-10-30 18:17:16.


          • -U [time] or --until=[time]: this is quite similar to the above, except it omits entries from after than the specified time. Arguments and syntax are the same.


          • -n [x] or --lines [x]: limits the number of output lines, where "x" is an integer. If you type journalctl -n 12, only the twelve most recent logs will be displayed.

          You can also reduce the amount of data retained, but WinEunuuchs2Unix already pointed that out, so I won't waste time repeating that information.






          share|improve this answer























          • Looks like journalctl has a wealth of options and someone should write a zenity or yad front end with GUI drop down menus and radio buttons / check boxes to filter with. I am kind of tempted myself. +1 even though answer strays off spirit of question :)

            – WinEunuuchs2Unix
            Apr 14 at 0:04














          1












          1








          1







          You can instruct journalctl to display a smaller quantity of stuff. There are various ways of doing this, such as:




          • -u [unit] or --unit=[unit]: this tells journalctl to only display logs from a systemd unit. You could, for example, type journalctl -u NetworkManager.service, and you'll get logs from NetworkManager.


          • -s [time] or --since=[time]: This tells journalctl to ignore any entries from before a certain time, specified as yyyy-mm-dd hh:mm:ss. If you want to leave out the time, journalctl will use 00:00:00. Also, if you leave out the date, journalctl will use the current date. Here's an example, taken from the man page: journalctl -s 2012-10-30 18:17:16.


          • -U [time] or --until=[time]: this is quite similar to the above, except it omits entries from after than the specified time. Arguments and syntax are the same.


          • -n [x] or --lines [x]: limits the number of output lines, where "x" is an integer. If you type journalctl -n 12, only the twelve most recent logs will be displayed.

          You can also reduce the amount of data retained, but WinEunuuchs2Unix already pointed that out, so I won't waste time repeating that information.






          share|improve this answer













          You can instruct journalctl to display a smaller quantity of stuff. There are various ways of doing this, such as:




          • -u [unit] or --unit=[unit]: this tells journalctl to only display logs from a systemd unit. You could, for example, type journalctl -u NetworkManager.service, and you'll get logs from NetworkManager.


          • -s [time] or --since=[time]: This tells journalctl to ignore any entries from before a certain time, specified as yyyy-mm-dd hh:mm:ss. If you want to leave out the time, journalctl will use 00:00:00. Also, if you leave out the date, journalctl will use the current date. Here's an example, taken from the man page: journalctl -s 2012-10-30 18:17:16.


          • -U [time] or --until=[time]: this is quite similar to the above, except it omits entries from after than the specified time. Arguments and syntax are the same.


          • -n [x] or --lines [x]: limits the number of output lines, where "x" is an integer. If you type journalctl -n 12, only the twelve most recent logs will be displayed.

          You can also reduce the amount of data retained, but WinEunuuchs2Unix already pointed that out, so I won't waste time repeating that information.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Apr 13 at 21:41









          TSJNachos117TSJNachos117

          9022915




          9022915












          • Looks like journalctl has a wealth of options and someone should write a zenity or yad front end with GUI drop down menus and radio buttons / check boxes to filter with. I am kind of tempted myself. +1 even though answer strays off spirit of question :)

            – WinEunuuchs2Unix
            Apr 14 at 0:04


















          • Looks like journalctl has a wealth of options and someone should write a zenity or yad front end with GUI drop down menus and radio buttons / check boxes to filter with. I am kind of tempted myself. +1 even though answer strays off spirit of question :)

            – WinEunuuchs2Unix
            Apr 14 at 0:04

















          Looks like journalctl has a wealth of options and someone should write a zenity or yad front end with GUI drop down menus and radio buttons / check boxes to filter with. I am kind of tempted myself. +1 even though answer strays off spirit of question :)

          – WinEunuuchs2Unix
          Apr 14 at 0:04






          Looks like journalctl has a wealth of options and someone should write a zenity or yad front end with GUI drop down menus and radio buttons / check boxes to filter with. I am kind of tempted myself. +1 even though answer strays off spirit of question :)

          – WinEunuuchs2Unix
          Apr 14 at 0:04


















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