docker service logs
Description | Fetch the logs of a service or task |
---|---|
Usage | docker service logs [OPTIONS] SERVICE|TASK |
Swarm This command works with the Swarm orchestrator.
Description
The docker service logs
command batch-retrieves logs present at the time of execution.
Note
This is a cluster management command, and must be executed on a swarm manager node. To learn about managers and workers, refer to the Swarm mode section in the documentation.
The docker service logs
command can be used with either the name or ID of a
service, or with the ID of a task. If a service is passed, it will display logs
for all of the containers in that service. If a task is passed, it will only
display logs from that particular task.
Note
This command is only functional for services that are started with the
json-file
orjournald
logging driver.
For more information about selecting and configuring logging drivers, refer to Configure logging drivers.
The docker service logs --follow
command will continue streaming the new output from
the service's STDOUT
and STDERR
.
Passing a negative number or a non-integer to --tail
is invalid and the
value is set to all
in that case.
The docker service logs --timestamps
command will add an
RFC3339Nano timestamp
, for example 2014-09-16T06:17:46.000000000Z
, to each
log entry. To ensure that the timestamps are aligned the
nano-second part of the timestamp will be padded with zero when necessary.
The docker service logs --details
command will add on extra attributes, such as
environment variables and labels, provided to --log-opt
when creating the
service.
The --since
option shows only the service logs generated after
a given date. You can specify the date as an RFC 3339 date, a UNIX
timestamp, or a Go duration string (e.g. 1m30s
, 3h
). Besides RFC3339 date
format you may also use RFC3339Nano, 2006-01-02T15:04:05
,
2006-01-02T15:04:05.999999999
, 2006-01-02T07:00
, and 2006-01-02
. The local
timezone on the client will be used if you do not provide either a Z
or a
+-00:00
timezone offset at the end of the timestamp. When providing Unix
timestamps enter seconds[.nanoseconds], where seconds is the number of seconds
that have elapsed since January 1, 1970 (midnight UTC/GMT), not counting leap
seconds (aka Unix epoch or Unix time), and the optional .nanoseconds field is a
fraction of a second no more than nine digits long. You can combine the
--since
option with either or both of the --follow
or --tail
options.
Options
Option | Default | Description |
---|---|---|
--details
|
API 1.30+ Show extra details provided to logs | |
-f, --follow
|
Follow log output | |
--no-resolve
|
Do not map IDs to Names in output | |
--no-task-ids
|
Do not include task IDs in output | |
--no-trunc
|
Do not truncate output | |
--raw
|
API 1.30+ Do not neatly format logs | |
--since
|
Show logs since timestamp (e.g. 2013-01-02T13:23:37Z ) or relative (e.g. 42m for 42 minutes) |
|
-n, --tail
|
all
|
Number of lines to show from the end of the logs |
-t, --timestamps
|
Show timestamps |