mirror of https://github.com/docker/cli.git
85 lines
4.4 KiB
Markdown
85 lines
4.4 KiB
Markdown
# service logs
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<!---MARKER_GEN_START-->
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Fetch the logs of a service or task
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### Options
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| Name | Type | Default | Description |
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|:---------------------|:---------|:--------|:------------------------------------------------------------------------------------------------|
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| `--details` | | | Show extra details provided to logs |
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| `-f`, `--follow` | | | Follow log output |
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| `--no-resolve` | | | Do not map IDs to Names in output |
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| `--no-task-ids` | | | Do not include task IDs in output |
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| `--no-trunc` | | | Do not truncate output |
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| `--raw` | | | Do not neatly format logs |
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| `--since` | `string` | | Show logs since timestamp (e.g. `2013-01-02T13:23:37Z`) or relative (e.g. `42m` for 42 minutes) |
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| `-n`, `--tail` | `string` | `all` | Number of lines to show from the end of the logs |
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| `-t`, `--timestamps` | | | Show timestamps |
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<!---MARKER_GEN_END-->
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## Description
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The `docker service logs` command batch-retrieves logs present at the time of execution.
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> **Note**
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>
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> This is a cluster management command, and must be executed on a swarm
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> manager node. To learn about managers and workers, refer to the
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> [Swarm mode section](https://docs.docker.com/engine/swarm/) in the
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> documentation.
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The `docker service logs` command can be used with either the name or ID of a
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service, or with the ID of a task. If a service is passed, it will display logs
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for all of the containers in that service. If a task is passed, it will only
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display logs from that particular task.
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> **Note**
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>
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> This command is only functional for services that are started with
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> the `json-file` or `journald` logging driver.
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For more information about selecting and configuring logging drivers, refer to
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[Configure logging drivers](https://docs.docker.com/config/containers/logging/configure/).
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The `docker service logs --follow` command will continue streaming the new output from
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the service's `STDOUT` and `STDERR`.
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Passing a negative number or a non-integer to `--tail` is invalid and the
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value is set to `all` in that case.
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The `docker service logs --timestamps` command will add an [RFC3339Nano timestamp](https://golang.org/pkg/time/#pkg-constants)
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, for example `2014-09-16T06:17:46.000000000Z`, to each
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log entry. To ensure that the timestamps are aligned the
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nano-second part of the timestamp will be padded with zero when necessary.
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The `docker service logs --details` command will add on extra attributes, such as
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environment variables and labels, provided to `--log-opt` when creating the
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service.
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The `--since` option shows only the service logs generated after
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a given date. You can specify the date as an RFC 3339 date, a UNIX
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timestamp, or a Go duration string (e.g. `1m30s`, `3h`). Besides RFC3339 date
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format you may also use RFC3339Nano, `2006-01-02T15:04:05`,
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`2006-01-02T15:04:05.999999999`, `2006-01-02Z07:00`, and `2006-01-02`. The local
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timezone on the client will be used if you do not provide either a `Z` or a
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`+-00:00` timezone offset at the end of the timestamp. When providing Unix
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timestamps enter seconds[.nanoseconds], where seconds is the number of seconds
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that have elapsed since January 1, 1970 (midnight UTC/GMT), not counting leap
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seconds (aka Unix epoch or Unix time), and the optional .nanoseconds field is a
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fraction of a second no more than nine digits long. You can combine the
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`--since` option with either or both of the `--follow` or `--tail` options.
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## Related commands
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* [service create](service_create.md)
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* [service inspect](service_inspect.md)
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* [service ls](service_ls.md)
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* [service ps](service_ps.md)
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* [service rm](service_rm.md)
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* [service rollback](service_rollback.md)
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* [service scale](service_scale.md)
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* [service update](service_update.md)
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