7.9 KiB
| title | description | keywords | aliases | |
|---|---|---|---|---|
| service ps | The service ps command description and usage | service, tasks, ps |
|
service ps
Usage: docker service ps [OPTIONS] SERVICE
List the tasks of one or more services
Options:
-f, --filter filter Filter output based on conditions provided
--format string Pretty-print tasks using a Go template
--help Print usage
--no-resolve Do not map IDs to Names
--no-trunc Do not truncate output
-q, --quiet Only display task IDs
Description
Lists the tasks that are running as part of the specified services. This command has to be run targeting a manager node.
Examples
List the tasks that are part of a service
The following command shows all the tasks that are part of the redis service:
$ docker service ps redis
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
0qihejybwf1x redis.1 redis:3.0.5 manager1 Running Running 8 seconds
bk658fpbex0d redis.2 redis:3.0.5 worker2 Running Running 9 seconds
5ls5s5fldaqg redis.3 redis:3.0.5 worker1 Running Running 9 seconds
8ryt076polmc redis.4 redis:3.0.5 worker1 Running Running 9 seconds
1x0v8yomsncd redis.5 redis:3.0.5 manager1 Running Running 8 seconds
71v7je3el7rr redis.6 redis:3.0.5 worker2 Running Running 9 seconds
4l3zm9b7tfr7 redis.7 redis:3.0.5 worker2 Running Running 9 seconds
9tfpyixiy2i7 redis.8 redis:3.0.5 worker1 Running Running 9 seconds
3w1wu13yupln redis.9 redis:3.0.5 manager1 Running Running 8 seconds
8eaxrb2fqpbn redis.10 redis:3.0.5 manager1 Running Running 8 seconds
In addition to running tasks, the output also shows the task history. For
example, after updating the service to use the redis:3.0.6 image, the output
may look like this:
$ docker service ps redis
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
50qe8lfnxaxk redis.1 redis:3.0.6 manager1 Running Running 6 seconds ago
ky2re9oz86r9 \_ redis.1 redis:3.0.5 manager1 Shutdown Shutdown 8 seconds ago
3s46te2nzl4i redis.2 redis:3.0.6 worker2 Running Running less than a second ago
nvjljf7rmor4 \_ redis.2 redis:3.0.6 worker2 Shutdown Rejected 23 seconds ago "No such image: redis@sha256:6…"
vtiuz2fpc0yb \_ redis.2 redis:3.0.5 worker2 Shutdown Shutdown 1 second ago
jnarweeha8x4 redis.3 redis:3.0.6 worker1 Running Running 3 seconds ago
vs448yca2nz4 \_ redis.3 redis:3.0.5 worker1 Shutdown Shutdown 4 seconds ago
jf1i992619ir redis.4 redis:3.0.6 worker1 Running Running 10 seconds ago
blkttv7zs8ee \_ redis.4 redis:3.0.5 worker1 Shutdown Shutdown 11 seconds ago
The number of items in the task history is determined by the
--task-history-limit option that was set when initializing the swarm. You can
change the task history retention limit using the
docker swarm update command.
When deploying a service, docker resolves the digest for the service's
image, and pins the service to that digest. The digest is not shown by
default, but is printed if --no-trunc is used. The --no-trunc option
also shows the non-truncated task ID, and error-messages, as can be seen below;
$ docker service ps --no-trunc redis
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
50qe8lfnxaxksi9w2a704wkp7 redis.1 redis:3.0.6@sha256:6a692a76c2081888b589e26e6ec835743119fe453d67ecf03df7de5b73d69842 manager1 Running Running 5 minutes ago
ky2re9oz86r9556i2szb8a8af \_ redis.1 redis:3.0.5@sha256:f8829e00d95672c48c60f468329d6693c4bdd28d1f057e755f8ba8b40008682e worker2 Shutdown Shutdown 5 minutes ago
bk658fpbex0d57cqcwoe3jthu redis.2 redis:3.0.6@sha256:6a692a76c2081888b589e26e6ec835743119fe453d67ecf03df7de5b73d69842 worker2 Running Running 5 seconds
nvjljf7rmor4htv7l8rwcx7i7 \_ redis.2 redis:3.0.6@sha256:6a692a76c2081888b589e26e6ec835743119fe453d67ecf03df7de5b73d69842 worker2 Shutdown Rejected 5 minutes ago "No such image: redis@sha256:6a692a76c2081888b589e26e6ec835743119fe453d67ecf03df7de5b73d69842"
Filtering
The filtering flag (-f or --filter) format is a key=value pair. If there
is more than one filter, then pass multiple flags (e.g. --filter "foo=bar" --filter "bif=baz").
Multiple filter flags are combined as an OR filter. For example,
-f name=redis.1 -f name=redis.7 returns both redis.1 and redis.7 tasks.
The currently supported filters are:
id
The id filter matches on all or a prefix of a task's ID.
$ docker service ps -f "id=8" redis
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
8ryt076polmc redis.4 redis:3.0.6 worker1 Running Running 9 seconds
8eaxrb2fqpbn redis.10 redis:3.0.6 manager1 Running Running 8 seconds
name
The name filter matches on task names.
$ docker service ps -f "name=redis.1" redis
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
qihejybwf1x5 redis.1 redis:3.0.6 manager1 Running Running 8 seconds
node
The node filter matches on a node name or a node ID.
$ docker service ps -f "node=manager1" redis
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
0qihejybwf1x redis.1 redis:3.0.6 manager1 Running Running 8 seconds
1x0v8yomsncd redis.5 redis:3.0.6 manager1 Running Running 8 seconds
3w1wu13yupln redis.9 redis:3.0.6 manager1 Running Running 8 seconds
8eaxrb2fqpbn redis.10 redis:3.0.6 manager1 Running Running 8 seconds
desired-state
The desired-state filter can take the values running, shutdown, and accepted.
Formatting
The formatting options (--format) pretty-prints tasks output
using a Go template.
Valid placeholders for the Go template are listed below:
| Placeholder | Description |
|---|---|
.ID |
Task ID |
.Name |
Task name |
.Image |
Task image |
.Node |
Node ID |
.DesiredState |
Desired state of the task (running, shutdown, and accepted) |
.CurrentState |
Current state of the task |
.Error |
Error |
.Ports |
Task published ports |
When using the --format option, the service ps command will either
output the data exactly as the template declares or, when using the
table directive, includes column headers as well.
The following example uses a template without headers and outputs the
ID and Driver entries separated by a colon for all tasks:
$ docker service ps --format "{{.Name}}: {{.Image}}" top
top.1: busybox
top.2: busybox
top.3: busybox