podman-logs

podman-logs(1) General Commands Manual podman-logs(1)

NAME

   podman-logs - Display the logs of one or more containers

SYNOPSIS

   podman logs [options] container [container...]

   podman container logs [options] container [container...]

DESCRIPTION

   The podman logs command batch-retrieves whatever logs are present for one or more containers at the time of execution.  This does not guarantee execution order when combined with pod
   man run (i.e. the run may not have generated any logs at the time podman logs was executed).

OPTIONS --color

   Output the containers with different colors in the log.

--follow, -f

   Follow log output.  Default is false.

   Note:  When  following  a container which is removed by podman container rm or removed on exit (podman run --rm ...), there is a chance that the log file is removed before podman logs
   reads the final content.

--latest, -l

   Instead of providing the container name or ID, use the last created container.  Note: the last started container can be from other users of Podman on the host machine.   (This  option
   is not available with the remote Podman client, including Mac and Windows (excluding WSL2) machines)

--names, -n

   Output the container names instead of the container IDs in the log.

--since=TIMESTAMP

   Show  logs  since  TIMESTAMP.  The --since option can be Unix timestamps, date formatted timestamps, or Go duration strings (e.g. 10m, 1h30m) computed relative to the client machine's
   time. Supported formats for date formatted time stamps include RFC3339Nano, RFC3339, 2006-01-02T15:04:05, 2006-01-02T15:04:05.999999999, 2006-01-02Z07:00, and 2006-01-02.

--tail=LINES

   Output the specified number of LINES at the end of the logs.  LINES must be an integer.  Defaults to -1, which prints all lines

--timestamps, -t

   Show timestamps in the log outputs.  The default is false

--until=TIMESTAMP

   Show logs until TIMESTAMP. The --until option can be Unix timestamps, date formatted timestamps, or Go duration strings (e.g. 10m, 1h30m) computed relative  to  the  client  machine's
   time. Supported formats for date formatted time stamps include RFC3339Nano, RFC3339, 2006-01-02T15:04:05, 2006-01-02T15:04:05.999999999, 2006-01-02Z07:00, and 2006-01-02.

EXAMPLE

   To view a container's logs:

   podman logs -t b3f2436bdb978c1d33b1387afb5d7ba7e3243ed2ce908db431ac0069da86cb45

   2017/08/07 10:16:21 Seeked /var/log/crio/pods/eb296bd56fab164d4d3cc46e5776b54414af3bf543d138746b25832c816b933b/c49f49788da14f776b7aa93fb97a2a71f9912f4e5a3e30397fca7dfe0ee0367b.log - &{Offset:0 Whence:0}
   1:C 07 Aug 14:10:09.055 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
   1:C 07 Aug 14:10:09.055 # Redis version=4.0.1, bits=64, commit=00000000, modified=0, pid=1, just started
   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
   1:M 07 Aug 14:10:09.055 # You requested maxclients of 10000 requiring at least 10032 max file descriptors.
   1:M 07 Aug 14:10:09.055 # Server can't set maximum open files to 10032 because of OS error: Operation not permitted.
   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'.
   1:M 07 Aug 14:10:09.056 * Running mode=standalone, port=6379.
   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.
   1:M 07 Aug 14:10:09.056 # Server initialized

   To view only the last two lines in container's log:

   podman logs --tail 2 b3f2436bdb97

   # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
   # Server initialized

   To view all containers logs:

   podman logs -t --since 0 myserver

   1:M 07 Aug 14:10:09.055 # Server can't set maximum open files to 10032 because of OS error: Operation not permitted.
   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'.
   1:M 07 Aug 14:10:09.056 * Running mode=standalone, port=6379.
   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.
   1:M 07 Aug 14:10:09.056 # Server initialized

   To view a container's logs since a certain time:

   podman logs -t --since 2017-08-07T10:10:09.055837383-04:00 myserver

   1:M 07 Aug 14:10:09.055 # Server can't set maximum open files to 10032 because of OS error: Operation not permitted.
   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'.
   1:M 07 Aug 14:10:09.056 * Running mode=standalone, port=6379.
   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.
   1:M 07 Aug 14:10:09.056 # Server initialized

   To view a container's logs generated in the last 10 minutes:

   podman logs --since 10m myserver

   # Server can't set maximum open files to 10032 because of OS error: Operation not permitted.
   # 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.

   To view a container's logs until 30 minutes ago:

   podman logs --until 30m myserver

   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
   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
   [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
   [Tue Jul 20 13:18:14.223819 2021] [core:notice] [pid 1:tid 140021067187328] AH00094: Command line: 'httpd -D FOREGROUND'

SEE ALSO

   podman(1), podman-run(1), podman-rm(1)

HISTORY

   February 2018, Updated by Brent Baude bbaude@redhat.com mailto:bbaude@redhat.com

   August 2017, Originally compiled by Ryan Cole rycole@redhat.com mailto:rycole@redhat.com

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