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d92bfd244f
The man-page cross-reference script checks the SEE ALSO section to confirm that all references are to existing man pages (#12258). However, it's a little too forgiving: it allows aliases, the short '.so' files under the 'links/' subdirectory. That means we could link to non-default command names, and were doing so. As of this PR, we no longer allow that. Any podman command referenced in SEE ALSO must be the canonical command name (and man page). Fix existing non-canonical names, and remove the exception so we don't allow this again. See #16848 for discussion of context. Signed-off-by: Ed Santiago <santiago@redhat.com>
107 lines
4.8 KiB
Markdown
107 lines
4.8 KiB
Markdown
% podman-logs 1
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## NAME
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podman\-logs - Display the logs of one or more containers
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## SYNOPSIS
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**podman logs** [*options*] *container* [*container...*]
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**podman container logs** [*options*] *container* [*container...*]
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## DESCRIPTION
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The podman logs command batch-retrieves whatever logs are present for one or more containers at the time of execution.
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This does not guarantee execution order when combined with podman run (i.e. the run may not have generated
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any logs at the time podman logs was executed).
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## OPTIONS
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@@option color
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@@option follow
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@@option latest
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@@option names
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@@option since
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@@option tail
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@@option timestamps
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@@option until
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## EXAMPLE
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To view a container's logs:
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```
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podman logs -t b3f2436bdb978c1d33b1387afb5d7ba7e3243ed2ce908db431ac0069da86cb45
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2017/08/07 10:16:21 Seeked /var/log/crio/pods/eb296bd56fab164d4d3cc46e5776b54414af3bf543d138746b25832c816b933b/c49f49788da14f776b7aa93fb97a2a71f9912f4e5a3e30397fca7dfe0ee0367b.log - &{Offset:0 Whence:0}
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1:C 07 Aug 14:10:09.055 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
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1:C 07 Aug 14:10:09.055 # Redis version=4.0.1, bits=64, commit=00000000, modified=0, pid=1, just started
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1:C 07 Aug 14:10:09.055 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf
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1:M 07 Aug 14:10:09.055 # You requested maxclients of 10000 requiring at least 10032 max file descriptors.
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1:M 07 Aug 14:10:09.055 # Server can't set maximum open files to 10032 because of OS error: Operation not permitted.
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1:M 07 Aug 14:10:09.055 # Current maximum open files is 4096. maxclients has been reduced to 4064 to compensate for low ulimit. If you need higher maxclients increase 'ulimit -n'.
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1:M 07 Aug 14:10:09.056 * Running mode=standalone, port=6379.
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1:M 07 Aug 14:10:09.056 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
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1:M 07 Aug 14:10:09.056 # Server initialized
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```
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To view only the last two lines in container's log:
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```
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podman logs --tail 2 b3f2436bdb97
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# WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
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# Server initialized
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```
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To view all containers logs:
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```
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podman logs -t --since 0 myserver
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1:M 07 Aug 14:10:09.055 # Server can't set maximum open files to 10032 because of OS error: Operation not permitted.
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1:M 07 Aug 14:10:09.055 # Current maximum open files is 4096. maxclients has been reduced to 4064 to compensate for low ulimit. If you need higher maxclients increase 'ulimit -n'.
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1:M 07 Aug 14:10:09.056 * Running mode=standalone, port=6379.
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1:M 07 Aug 14:10:09.056 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
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1:M 07 Aug 14:10:09.056 # Server initialized
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```
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To view a containers logs since a certain time:
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```
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podman logs -t --since 2017-08-07T10:10:09.055837383-04:00 myserver
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1:M 07 Aug 14:10:09.055 # Server can't set maximum open files to 10032 because of OS error: Operation not permitted.
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1:M 07 Aug 14:10:09.055 # Current maximum open files is 4096. maxclients has been reduced to 4064 to compensate for low ulimit. If you need higher maxclients increase 'ulimit -n'.
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1:M 07 Aug 14:10:09.056 * Running mode=standalone, port=6379.
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1:M 07 Aug 14:10:09.056 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
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1:M 07 Aug 14:10:09.056 # Server initialized
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```
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To view a container's logs generated in the last 10 minutes:
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```
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podman logs --since 10m myserver
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# Server can't set maximum open files to 10032 because of OS error: Operation not permitted.
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# Current maximum open files is 4096. maxclients has been reduced to 4064 to compensate for low ulimit, Increase 'ulimit -n' when higher maxclients are required.
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```
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To view a container's logs until 30 minutes ago:
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```
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podman logs --until 30m myserver
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AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 10.0.2.100. Set the 'ServerName' directive globally to suppress this message
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AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 10.0.2.100. Set the 'ServerName' directive globally to suppress this message
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[Tue Jul 20 13:18:14.223727 2021] [mpm_event:notice] [pid 1:tid 140021067187328] AH00489: Apache/2.4.48 (Unix) configured -- resuming normal operations
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[Tue Jul 20 13:18:14.223819 2021] [core:notice] [pid 1:tid 140021067187328] AH00094: Command line: 'httpd -D FOREGROUND'
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```
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## SEE ALSO
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**[podman(1)](podman.1.md)**, **[podman-run(1)](podman-run.1.md)**, **[podman-rm(1)](podman-rm.1.md)**
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## HISTORY
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February 2018, Updated by Brent Baude <bbaude@redhat.com>
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August 2017, Originally compiled by Ryan Cole <rycole@redhat.com>
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