Remembrance from an old friend: Curiosity killed the cat, but satisfaction brought it back.
Finally found how to keep systemd logging persistent.
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### Number of reboots:
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[root@oracle-goldengate-1910-vagrant ~]# last reboot
reboot system boot 5.4.17-2136.307. Sat May 21 17:53 - 18:01 (00:07)
reboot system boot 5.4.17-2136.307. Sat May 21 17:48 - 17:51 (00:03)
reboot system boot 5.4.17-2136.307. Sat May 21 11:01 - 17:48 (06:46)
reboot system boot 5.4.17-2136.307. Fri May 20 23:12 - 11:01 (11:48)
reboot system boot 5.4.17-2136.307. Fri May 20 22:54 - 23:11 (00:17)
reboot system boot 5.4.17-2136.307. Fri May 20 22:49 - 22:54 (00:04)
reboot system boot 5.4.17-2136.307. Fri May 20 22:21 - 22:49 (00:27)
reboot system boot 5.4.17-2136.307. Fri May 20 22:04 - 22:21 (00:16)
reboot system boot 5.4.17-2136.307. Thu May 19 23:35 - 22:03 (22:28)
reboot system boot 5.4.17-2136.307. Thu May 19 23:19 - 23:34 (00:15)
reboot system boot 5.4.17-2136.307. Thu May 19 23:07 - 23:18 (00:11)
reboot system boot 5.4.17-2136.307. Thu May 19 22:54 - 23:05 (00:11)
reboot system boot 5.4.17-2136.307. Thu May 19 22:47 - 22:53 (00:06)
reboot system boot 5.4.17-2136.307. Thu May 19 21:08 - 22:45 (01:37)
reboot system boot 5.4.17-2136.307. Thu May 19 20:40 - 21:07 (00:27)
reboot system boot 5.4.17-2136.307. Thu May 19 07:28 - 10:59 (03:31)
reboot system boot 5.4.17-2136.307. Thu May 19 07:22 - 07:27 (00:05)
reboot system boot 5.4.17-2036.100. Wed May 18 22:24 - 07:22 (08:57)
wtmp begins Wed May 18 22:24:31 2022
[root@oracle-goldengate-1910-vagrant ~]#
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### Only 1 reboot recorded from journalctl:
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[root@oracle-goldengate-1910-vagrant ~]# journalctl --list-boots
0 016de73a7e81411bbd7c0b7657863852 Sat 2022-05-21 17:53:18 -04—Sat 2022-05-21 18:01:01 -04
[root@oracle-goldengate-1910-vagrant ~]#
[root@oracle-goldengate-1910-vagrant ~]# journalctl | head -1
-- Logs begin at Sat 2022-05-21 17:53:18 -04, end at Sat 2022-05-21 18:01:01 -04. --
[root@oracle-goldengate-1910-vagrant ~]#
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### Enable persistent systemd journal log:
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Enable persistent storage for the systemd journal log
https://gist.github.com/JPvRiel/b7c185833da32631fa6ce65b40836887
[root@oracle-goldengate-1910-vagrant ~]# mkdir /var/log/journal
[root@oracle-goldengate-1910-vagrant ~]# systemd-tmpfiles --create --prefix /var/log/journal
[root@oracle-goldengate-1910-vagrant ~]# echo "SystemMaxUse=100M" >> /etc/systemd/journald.conf
[root@oracle-goldengate-1910-vagrant ~]# grep -i SystemMaxUse /etc/systemd/journald.conf
#SystemMaxUse=
SystemMaxUse=100M
[root@oracle-goldengate-1910-vagrant ~]# systemctl restart systemd-journald.service
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### Moment of truth:
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[root@oracle-goldengate-1910-vagrant ~]# last reboot
reboot system boot 5.4.17-2136.307. Sat May 21 18:31 - 18:33 (00:01)
reboot system boot 5.4.17-2136.307. Sat May 21 18:12 - 18:29 (00:16)
reboot system boot 5.4.17-2136.307. Sat May 21 17:53 - 18:09 (00:15)
reboot system boot 5.4.17-2136.307. Sat May 21 17:48 - 17:51 (00:03)
reboot system boot 5.4.17-2136.307. Sat May 21 11:01 - 17:48 (06:46)
reboot system boot 5.4.17-2136.307. Fri May 20 23:12 - 11:01 (11:48)
reboot system boot 5.4.17-2136.307. Fri May 20 22:54 - 23:11 (00:17)
reboot system boot 5.4.17-2136.307. Fri May 20 22:49 - 22:54 (00:04)
reboot system boot 5.4.17-2136.307. Fri May 20 22:21 - 22:49 (00:27)
reboot system boot 5.4.17-2136.307. Fri May 20 22:04 - 22:21 (00:16)
reboot system boot 5.4.17-2136.307. Thu May 19 23:35 - 22:03 (22:28)
reboot system boot 5.4.17-2136.307. Thu May 19 23:19 - 23:34 (00:15)
reboot system boot 5.4.17-2136.307. Thu May 19 23:07 - 23:18 (00:11)
reboot system boot 5.4.17-2136.307. Thu May 19 22:54 - 23:05 (00:11)
reboot system boot 5.4.17-2136.307. Thu May 19 22:47 - 22:53 (00:06)
reboot system boot 5.4.17-2136.307. Thu May 19 21:08 - 22:45 (01:37)
reboot system boot 5.4.17-2136.307. Thu May 19 20:40 - 21:07 (00:27)
reboot system boot 5.4.17-2136.307. Thu May 19 07:28 - 10:59 (03:31)
reboot system boot 5.4.17-2136.307. Thu May 19 07:22 - 07:27 (00:05)
reboot system boot 5.4.17-2036.100. Wed May 18 22:24 - 07:22 (08:57)
wtmp begins Wed May 18 22:24:31 2022
[root@oracle-goldengate-1910-vagrant ~]#
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### More than 1 reboot recorded from journalctl:
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[root@oracle-goldengate-1910-vagrant ~]# journalctl --list-boots|sort
0 beedb88ca40c4c6187ae9d5c7ff1e96e Sat 2022-05-21 18:31:53 -04—Sat 2022-05-21 23:30:01 -04
-1 e12a9e02fd374350a5fcd3d4360b09fc Sat 2022-05-21 18:12:48 -04—Sat 2022-05-21 18:29:34 -04
-2 016de73a7e81411bbd7c0b7657863852 Sat 2022-05-21 17:53:18 -04—Sat 2022-05-21 18:09:16 -04
[root@oracle-goldengate-1910-vagrant ~]#
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### Review GoldengGate Start and Stop:
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[root@oracle-goldengate-1910-vagrant ~]# last reboot|head -5|sort -n
reboot system boot 5.4.17-2136.307. Sat May 21 11:01 - 17:48 (06:46)
reboot system boot 5.4.17-2136.307. Sat May 21 17:48 - 17:51 (00:03)
reboot system boot 5.4.17-2136.307. Sat May 21 17:53 - 18:09 (00:15)
reboot system boot 5.4.17-2136.307. Sat May 21 18:12 - 18:29 (00:16)
reboot system boot 5.4.17-2136.307. Sat May 21 18:31 - 19:11 (00:39)
[root@oracle-goldengate-1910-vagrant ~]#
[root@oracle-goldengate-1910-vagrant ~]# journalctl --no-pager|grep "Manager st"
May 21 17:53:44 oracle-goldengate-1910-vagrant start_goldengate.sh[3115]: Manager started.
May 21 18:09:04 oracle-goldengate-1910-vagrant stop_goldengate.sh[6177]: Manager stopped.
May 21 18:13:15 oracle-goldengate-1910-vagrant start_goldengate.sh[3383]: Manager started.
May 21 18:29:21 oracle-goldengate-1910-vagrant stop_goldengate.sh[6290]: Manager stopped.
May 21 18:32:17 oracle-goldengate-1910-vagrant start_goldengate.sh[4134]: Manager started.
[root@oracle-goldengate-1910-vagrant ~]#
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reboot system boot 5.4.17-2136.307. Sat May 21 17:48 - 17:51 (00:03)
journalctl May 21 17:53:44 oracle-goldengate-1910-vagrant start_goldengate.sh[3115]: Manager started.
reboot system boot 5.4.17-2136.307. Sat May 21 17:53 - 18:09 (00:15)
journalctl May 21 18:09:04 oracle-goldengate-1910-vagrant stop_goldengate.sh[6177]: Manager stopped.
journalctl May 21 18:13:15 oracle-goldengate-1910-vagrant start_goldengate.sh[3383]: Manager started.
reboot system boot 5.4.17-2136.307. Sat May 21 18:12 - 18:29 (00:16)
journalctl May 21 18:13:15 oracle-goldengate-1910-vagrant start_goldengate.sh[3383]: Manager started.
journalctl May 21 18:29:21 oracle-goldengate-1910-vagrant stop_goldengate.sh[6290]: Manager stopped.
reboot system boot 5.4.17-2136.307. Sat May 21 18:31 - 10:57 (16:25)
journalctl May 21 18:32:17 oracle-goldengate-1910-vagrant start_goldengate.sh[4134]: Manager started.