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Explain stack deploy with multiple Compose files

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The Docker Compose docs suggest using a separate override
configuration file for production-specific settings, but
it is not obvious how to feed this to `docker stack deploy`,
which only supports a single Compose file as input. Thus,
we now describe how to do this by merging the configuration
files with `docker-compose config`.

Signed-off-by: Denis Washington <denis@denisw.de>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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Sebastiaan van Stijn 2017-06-20 21:23:21 -07:00
parent 2bfac7fcda
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docs/reference/commandline/stack_deploy.md
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@ -40,7 +40,7 @@ has to be run targeting a manager node.
### Compose file ### Compose file
The `deploy` command supports compose file version `3.0` and above." The `deploy` command supports compose file version `3.0` and above.
```bash ```bash
$ docker stack deploy --compose-file docker-compose.yml vossibility $ docker stack deploy --compose-file docker-compose.yml vossibility
@ -57,7 +57,28 @@ Creating service vossibility_ghollector
Creating service vossibility_lookupd Creating service vossibility_lookupd
``` ```
You can verify that the services were correctly created Only a single Compose file is accepted. If your configuration is split between
multiple Compose files, e.g. a base configuration and environment-specific overrides,
you can combine these by passing them to `docker-compose config` with the `-f` option
and redirecting the merged output into a new file.
```bash
$ docker-compose -f docker-compose.yml -f docker-compose.prod.yml config > docker-stack.yml
$ docker stack deploy --compose-file docker-stack.yml vossibility
Ignoring unsupported options: links
Creating network vossibility_vossibility
Creating network vossibility_default
Creating service vossibility_nsqd
Creating service vossibility_logstash
Creating service vossibility_elasticsearch
Creating service vossibility_kibana
Creating service vossibility_ghollector
Creating service vossibility_lookupd
```
You can verify that the services were correctly created:
```bash ```bash
$ docker service ls $ docker service ls