github.com/hanks177/podman/v4@v4.1.3-0.20220613032544-16d90015bc83/docs/source/markdown/podman-logs.1.md (about)

     1  % podman-logs(1)
     2  
     3  ## NAME
     4  podman\-logs - Display the logs of one or more containers
     5  
     6  ## SYNOPSIS
     7  **podman logs** [*options*] *container* [*container...*]
     8  
     9  **podman container logs** [*options*] *container* [*container...*]
    10  
    11  ## DESCRIPTION
    12  The podman logs command batch-retrieves whatever logs are present for one or more containers at the time of execution.
    13  This does not guarantee execution order when combined with podman run (i.e. your run may not have generated
    14  any logs at the time you execute podman logs).
    15  
    16  ## OPTIONS
    17  
    18  #### **--color**
    19  
    20  Output the containers with different colors in the log.
    21  
    22  #### **--follow**, **-f**
    23  
    24  Follow log output.  Default is false.
    25  
    26  Note: If you are following a container which is removed `podman container rm`
    27  or removed on exit `podman run --rm ...`, then there is a chance that the log
    28  file will be removed before `podman logs` reads the final content.
    29  
    30  #### **--latest**, **-l**
    31  
    32  Instead of providing the container name or ID, use the last created container. If you use methods other than Podman
    33  to run containers such as CRI-O, the last started container could be from either of those methods. (This option is not available with the remote Podman client, including Mac and Windows (excluding WSL2) machines)
    34  
    35  #### **--names**, **-n**
    36  
    37  Output the container name in the log
    38  
    39  #### **--since**=*TIMESTAMP*
    40  
    41  Show logs since TIMESTAMP. The --since option can be Unix timestamps, date formatted timestamps, or Go duration
    42  strings (e.g. 10m, 1h30m) computed relative to the client machine's time. Supported formats for date formatted
    43  time stamps include RFC3339Nano, RFC3339, 2006-01-02T15:04:05, 2006-01-02T15:04:05.999999999, 2006-01-02Z07:00,
    44  and 2006-01-02.
    45  
    46  #### **--tail**=*LINES*
    47  
    48  Output the specified number of LINES at the end of the logs.  LINES must be an integer.  Defaults to -1,
    49  which prints all lines
    50  
    51  #### **--timestamps**, **-t**
    52  
    53  Show timestamps in the log outputs.  The default is false
    54  
    55  #### **--until**=*TIMESTAMP*
    56  
    57  Show logs until TIMESTAMP. The --until option can be Unix timestamps, date formatted timestamps, or Go duration
    58  strings (e.g. 10m, 1h30m) computed relative to the client machine's time. Supported formats for date formatted
    59  time stamps include RFC3339Nano, RFC3339, 2006-01-02T15:04:05, 2006-01-02T15:04:05.999999999, 2006-01-02Z07:00,
    60  and 2006-01-02.
    61  
    62  ## EXAMPLE
    63  
    64  To view a container's logs:
    65  ```
    66  podman logs -t b3f2436bdb978c1d33b1387afb5d7ba7e3243ed2ce908db431ac0069da86cb45
    67  
    68  2017/08/07 10:16:21 Seeked /var/log/crio/pods/eb296bd56fab164d4d3cc46e5776b54414af3bf543d138746b25832c816b933b/c49f49788da14f776b7aa93fb97a2a71f9912f4e5a3e30397fca7dfe0ee0367b.log - &{Offset:0 Whence:0}
    69  1:C 07 Aug 14:10:09.055 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
    70  1:C 07 Aug 14:10:09.055 # Redis version=4.0.1, bits=64, commit=00000000, modified=0, pid=1, just started
    71  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
    72  1:M 07 Aug 14:10:09.055 # You requested maxclients of 10000 requiring at least 10032 max file descriptors.
    73  1:M 07 Aug 14:10:09.055 # Server can't set maximum open files to 10032 because of OS error: Operation not permitted.
    74  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'.
    75  1:M 07 Aug 14:10:09.056 * Running mode=standalone, port=6379.
    76  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.
    77  1:M 07 Aug 14:10:09.056 # Server initialized
    78  ```
    79  
    80  To view only the last two lines in container's log:
    81  ```
    82  podman logs --tail 2 b3f2436bdb97
    83  
    84  # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
    85  # Server initialized
    86  ```
    87  
    88  To view all containers logs:
    89  ```
    90  podman logs -t --since 0 myserver
    91  
    92  1:M 07 Aug 14:10:09.055 # Server can't set maximum open files to 10032 because of OS error: Operation not permitted.
    93  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'.
    94  1:M 07 Aug 14:10:09.056 * Running mode=standalone, port=6379.
    95  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.
    96  1:M 07 Aug 14:10:09.056 # Server initialized
    97  ```
    98  
    99  To view a containers logs since a certain time:
   100  ```
   101  podman logs -t --since 2017-08-07T10:10:09.055837383-04:00 myserver
   102  
   103  1:M 07 Aug 14:10:09.055 # Server can't set maximum open files to 10032 because of OS error: Operation not permitted.
   104  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'.
   105  1:M 07 Aug 14:10:09.056 * Running mode=standalone, port=6379.
   106  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.
   107  1:M 07 Aug 14:10:09.056 # Server initialized
   108  ```
   109  
   110  To view a container's logs generated in the last 10 minutes:
   111  ```
   112  podman logs --since 10m myserver
   113  
   114  # Server can't set maximum open files to 10032 because of OS error: Operation not permitted.
   115  # 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'.
   116  ```
   117  
   118  To view a container's logs until 30 minutes ago:
   119  ```
   120  podman logs --until 30m myserver
   121  
   122  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
   123  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
   124  [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
   125  [Tue Jul 20 13:18:14.223819 2021] [core:notice] [pid 1:tid 140021067187328] AH00094: Command line: 'httpd -D FOREGROUND'
   126  ```
   127  
   128  ## SEE ALSO
   129  **[podman(1)](podman.1.md)**, **[podman-run(1)](podman-run.1.md)**, **[podman-container-rm(1)](podman-container-rm.1.md)**
   130  
   131  ## HISTORY
   132  February 2018, Updated by Brent Baude <bbaude@redhat.com>
   133  
   134  August 2017, Originally compiled by Ryan Cole <rycole@redhat.com>