diff --git a/nixos/doc/manual/administration/logging.chapter.md b/nixos/doc/manual/administration/logging.chapter.md new file mode 100644 index 000000000000..4ce6f5e9fa72 --- /dev/null +++ b/nixos/doc/manual/administration/logging.chapter.md @@ -0,0 +1,38 @@ +# Logging {#sec-logging} + +System-wide logging is provided by systemd's *journal*, which subsumes +traditional logging daemons such as syslogd and klogd. Log entries are +kept in binary files in `/var/log/journal/`. The command `journalctl` +allows you to see the contents of the journal. For example, + +```ShellSession +$ journalctl -b +``` + +shows all journal entries since the last reboot. (The output of +`journalctl` is piped into `less` by default.) You can use various +options and match operators to restrict output to messages of interest. +For instance, to get all messages from PostgreSQL: + +```ShellSession +$ journalctl -u postgresql.service +-- Logs begin at Mon, 2013-01-07 13:28:01 CET, end at Tue, 2013-01-08 01:09:57 CET. -- +... +Jan 07 15:44:14 hagbard postgres[2681]: [2-1] LOG: database system is shut down +-- Reboot -- +Jan 07 15:45:10 hagbard postgres[2532]: [1-1] LOG: database system was shut down at 2013-01-07 15:44:14 CET +Jan 07 15:45:13 hagbard postgres[2500]: [1-1] LOG: database system is ready to accept connections +``` + +Or to get all messages since the last reboot that have at least a +"critical" severity level: + +```ShellSession +$ journalctl -b -p crit +Dec 17 21:08:06 mandark sudo[3673]: pam_unix(sudo:auth): auth could not identify password for [alice] +Dec 29 01:30:22 mandark kernel[6131]: [1053513.909444] CPU6: Core temperature above threshold, cpu clock throttled (total events = 1) +``` + +The system journal is readable by root and by users in the `wheel` and +`systemd-journal` groups. All users have a private journal that can be +read using `journalctl`. diff --git a/nixos/doc/manual/administration/logging.xml b/nixos/doc/manual/administration/logging.xml deleted file mode 100644 index da4877fcdf08..000000000000 --- a/nixos/doc/manual/administration/logging.xml +++ /dev/null @@ -1,43 +0,0 @@ - - Logging - - System-wide logging is provided by systemd’s journal, - which subsumes traditional logging daemons such as syslogd and klogd. Log - entries are kept in binary files in /var/log/journal/. - The command journalctl allows you to see the contents of - the journal. For example, - -$ journalctl -b - - shows all journal entries since the last reboot. (The output of - journalctl is piped into less by - default.) You can use various options and match operators to restrict output - to messages of interest. For instance, to get all messages from PostgreSQL: - -$ journalctl -u postgresql.service --- Logs begin at Mon, 2013-01-07 13:28:01 CET, end at Tue, 2013-01-08 01:09:57 CET. -- -... -Jan 07 15:44:14 hagbard postgres[2681]: [2-1] LOG: database system is shut down --- Reboot -- -Jan 07 15:45:10 hagbard postgres[2532]: [1-1] LOG: database system was shut down at 2013-01-07 15:44:14 CET -Jan 07 15:45:13 hagbard postgres[2500]: [1-1] LOG: database system is ready to accept connections - - Or to get all messages since the last reboot that have at least a - “critical” severity level: - -$ journalctl -b -p crit -Dec 17 21:08:06 mandark sudo[3673]: pam_unix(sudo:auth): auth could not identify password for [alice] -Dec 29 01:30:22 mandark kernel[6131]: [1053513.909444] CPU6: Core temperature above threshold, cpu clock throttled (total events = 1) - - - - The system journal is readable by root and by users in the - wheel and systemd-journal groups. All - users have a private journal that can be read using - journalctl. - - diff --git a/nixos/doc/manual/administration/running.xml b/nixos/doc/manual/administration/running.xml index 43642b659a8e..aeccc843792b 100644 --- a/nixos/doc/manual/administration/running.xml +++ b/nixos/doc/manual/administration/running.xml @@ -14,7 +14,7 @@ - + diff --git a/nixos/doc/manual/from_md/administration/logging.chapter.xml b/nixos/doc/manual/from_md/administration/logging.chapter.xml new file mode 100644 index 000000000000..4da38c065a27 --- /dev/null +++ b/nixos/doc/manual/from_md/administration/logging.chapter.xml @@ -0,0 +1,45 @@ + + Logging + + System-wide logging is provided by systemd’s + journal, which subsumes traditional logging + daemons such as syslogd and klogd. Log entries are kept in binary + files in /var/log/journal/. The command + journalctl allows you to see the contents of the + journal. For example, + + +$ journalctl -b + + + shows all journal entries since the last reboot. (The output of + journalctl is piped into less + by default.) You can use various options and match operators to + restrict output to messages of interest. For instance, to get all + messages from PostgreSQL: + + +$ journalctl -u postgresql.service +-- Logs begin at Mon, 2013-01-07 13:28:01 CET, end at Tue, 2013-01-08 01:09:57 CET. -- +... +Jan 07 15:44:14 hagbard postgres[2681]: [2-1] LOG: database system is shut down +-- Reboot -- +Jan 07 15:45:10 hagbard postgres[2532]: [1-1] LOG: database system was shut down at 2013-01-07 15:44:14 CET +Jan 07 15:45:13 hagbard postgres[2500]: [1-1] LOG: database system is ready to accept connections + + + Or to get all messages since the last reboot that have at least a + critical severity level: + + +$ journalctl -b -p crit +Dec 17 21:08:06 mandark sudo[3673]: pam_unix(sudo:auth): auth could not identify password for [alice] +Dec 29 01:30:22 mandark kernel[6131]: [1053513.909444] CPU6: Core temperature above threshold, cpu clock throttled (total events = 1) + + + The system journal is readable by root and by users in the + wheel and systemd-journal + groups. All users have a private journal that can be read using + journalctl. + +