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Signed-off-by: Misty Stanley-Jones <misty@docker.com>
This commit is contained in:
Misty Stanley-Jones 2017-04-04 10:06:32 -07:00
parent f6b7dc9837
commit 622bdadfd7
1 changed files with 11 additions and 9 deletions
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20
docs/extend/plugins_services.md
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@ -17,15 +17,15 @@ title: Plugins and Services
In swarm mode, it is possible to create a service that allows for attaching
to networks or mounting volumes that are backed by plugins. Swarm schedules
services based on plugin availability on a node.
services based on plugin availability on a node.
### Volume plugins
In this example, a volume plugin is installed on a swarm worker and a volume
is created using the plugin. In the manager, a service is created with the
relevant mount options. It can be observed that the service is scheduled to
run on the worker node with the said volume plugin and volume. Note that,
is created using the plugin. In the manager, a service is created with the
relevant mount options. It can be observed that the service is scheduled to
run on the worker node with the said volume plugin and volume. Note that,
node1 is the manager and node2 is the worker.
1. Prepare manager. In node 1:
@ -51,7 +51,7 @@ node1 is the manager and node2 is the worker.
Status: Downloaded newer image for tiborvass/sample-volume-plugin:latest
Installed plugin tiborvass/sample-volume-plugin
```
```bash
$ docker volume create -d tiborvass/sample-volume-plugin --name pluginVol
```
@ -62,28 +62,30 @@ node1 is the manager and node2 is the worker.
$ docker service create --name my-service --mount type=volume,volume-driver=tiborvass/sample-volume-plugin,source=pluginVol,destination=/tmp busybox top
$ docker service ls
z1sj8bb8jnfn my-service replicated 1/1 busybox:latest
z1sj8bb8jnfn my-service replicated 1/1 busybox:latest
```
docker service ls shows service 1 instance of service running.
4. Observe the task getting scheduled in node 2:
```bash
{% raw %}
$ docker ps --format '{{.ID}}\t {{.Status}} {{.Names}} {{.Command}}'
83fc1e842599 Up 2 days my-service.1.9jn59qzn7nbc3m0zt1hij12xs "top"
{% endraw %}
```
### Network plugins
In this example, a global scope network plugin is installed on both the
In this example, a global scope network plugin is installed on both the
swarm manager and worker. A service is created with replicated instances
using the installed plugin. We will observe how the availability of the
using the installed plugin. We will observe how the availability of the
plugin determines network creation and container scheduling.
Note that node1 is the manager and node2 is the worker.
1. Install a global scoped network plugin on both manager and worker. On node1
1. Install a global scoped network plugin on both manager and worker. On node1
and node2:
```bash