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https://github.com/dokku/dokku-rabbitmq

a rabbitmq plugin for dokku
https://github.com/dokku/dokku-rabbitmq

dokku dokku-plugin dokku-service paas rabbitmq

Last synced: 3 months ago
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a rabbitmq plugin for dokku

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README 

          
# dokku rabbitmq [![Build Status](https://img.shields.io/github/actions/workflow/status/dokku/dokku-rabbitmq/ci.yml?branch=master&style=flat-square "Build Status")](https://github.com/dokku/dokku-rabbitmq/actions/workflows/ci.yml?query=branch%3Amaster) [![IRC Network](https://img.shields.io/badge/irc-libera-blue.svg?style=flat-square "IRC Libera")](https://webchat.libera.chat/?channels=dokku)



Official rabbitmq plugin for dokku. Currently defaults to installing [rabbitmq 4.1.1-management](https://hub.docker.com/_/rabbitmq/).



## Requirements



- dokku 0.19.x+

- docker 1.8.x



## Installation



```shell

# on 0.19.x+

sudo dokku plugin:install https://github.com/dokku/dokku-rabbitmq.git --name rabbitmq

```



## Commands



```

rabbitmq:app-links                            # list all rabbitmq service links for a given app

rabbitmq:backup-set-public-key-encryption   # set GPG Public Key encryption for all future backups of rabbitmq service

rabbitmq:backup-unset-public-key-encryption  # unset GPG Public Key encryption for future backups of the rabbitmq service

rabbitmq:create  [--create-flags...]      # create a rabbitmq service

rabbitmq:destroy  [-f|--force]            # delete the rabbitmq service/data/container if there are no links left

rabbitmq:enter                            # enter or run a command in a running rabbitmq service container

rabbitmq:exists                           # check if the rabbitmq service exists

rabbitmq:expose                 # expose a rabbitmq service on custom host:port if provided (random port on the 0.0.0.0 interface if otherwise unspecified)

rabbitmq:info  [--single-info-flag]       # print the service information

rabbitmq:link   [--link-flags...]    # link the rabbitmq service to the app

rabbitmq:linked                      # check if the rabbitmq service is linked to an app

rabbitmq:links                            # list all apps linked to the rabbitmq service

rabbitmq:list                                      # list all rabbitmq services

rabbitmq:logs  [-t|--tail]  # print the most recent log(s) for this service

rabbitmq:pause                            # pause a running rabbitmq service

rabbitmq:promote                     # promote service  as RABBITMQ_URL in 

rabbitmq:restart                          # graceful shutdown and restart of the rabbitmq service container

rabbitmq:set                  # set or clear a property for a service

rabbitmq:start                            # start a previously stopped rabbitmq service

rabbitmq:stop                             # stop a running rabbitmq service

rabbitmq:unexpose                         # unexpose a previously exposed rabbitmq service

rabbitmq:unlink                      # unlink the rabbitmq service from the app

rabbitmq:upgrade  [--upgrade-flags...]    # upgrade service  to the specified versions

```



## Usage



Help for any commands can be displayed by specifying the command as an argument to rabbitmq:help. Plugin help output in conjunction with any files in the `docs/` folder is used to generate the plugin documentation. Please consult the `rabbitmq:help` command for any undocumented commands.



### Basic Usage



### create a rabbitmq service



```shell

# usage

dokku rabbitmq:create  [--create-flags...]

```



flags:



- `-c|--config-options "--args --go=here"`: extra arguments to pass to the container create command (default: `None`)

- `-C|--custom-env "USER=alpha;HOST=beta"`: semi-colon delimited environment variables to start the service with

- `-i|--image IMAGE`: the image name to start the service with

- `-I|--image-version IMAGE_VERSION`: the image version to start the service with

- `-m|--memory MEMORY`: container memory limit in megabytes (default: unlimited)

- `-N|--initial-network INITIAL_NETWORK`: the initial network to attach the service to

- `-p|--password PASSWORD`: override the user-level service password

- `-P|--post-create-network NETWORKS`: a comma-separated list of networks to attach the service container to after service creation

- `-r|--root-password PASSWORD`: override the root-level service password

- `-S|--post-start-network NETWORKS`: a comma-separated list of networks to attach the service container to after service start

- `-s|--shm-size SHM_SIZE`: override shared memory size for rabbitmq docker container



Create a rabbitmq service named lollipop:



```shell

dokku rabbitmq:create lollipop

```



You can also specify the image and image version to use for the service. It *must* be compatible with the rabbitmq image.



```shell

export RABBITMQ_IMAGE="rabbitmq"

export RABBITMQ_IMAGE_VERSION="${PLUGIN_IMAGE_VERSION}"

dokku rabbitmq:create lollipop

```



You can also specify custom environment variables to start the rabbitmq service in semicolon-separated form.



```shell

export RABBITMQ_CUSTOM_ENV="USER=alpha;HOST=beta"

dokku rabbitmq:create lollipop

```



### print the service information



```shell

# usage

dokku rabbitmq:info  [--single-info-flag]

```



flags:



- `--config-dir`: show the service configuration directory

- `--data-dir`: show the service data directory

- `--dsn`: show the service DSN

- `--exposed-ports`: show service exposed ports

- `--id`: show the service container id

- `--internal-ip`: show the service internal ip

- `--initial-network`: show the initial network being connected to

- `--links`: show the service app links

- `--post-create-network`: show the networks to attach to after service container creation

- `--post-start-network`: show the networks to attach to after service container start

- `--service-root`: show the service root directory

- `--status`: show the service running status

- `--version`: show the service image version



Get connection information as follows:



```shell

dokku rabbitmq:info lollipop

```



You can also retrieve a specific piece of service info via flags:



```shell

dokku rabbitmq:info lollipop --config-dir

dokku rabbitmq:info lollipop --data-dir

dokku rabbitmq:info lollipop --dsn

dokku rabbitmq:info lollipop --exposed-ports

dokku rabbitmq:info lollipop --id

dokku rabbitmq:info lollipop --internal-ip

dokku rabbitmq:info lollipop --initial-network

dokku rabbitmq:info lollipop --links

dokku rabbitmq:info lollipop --post-create-network

dokku rabbitmq:info lollipop --post-start-network

dokku rabbitmq:info lollipop --service-root

dokku rabbitmq:info lollipop --status

dokku rabbitmq:info lollipop --version

```



### list all rabbitmq services



```shell

# usage

dokku rabbitmq:list

```



List all services:



```shell

dokku rabbitmq:list

```



### print the most recent log(s) for this service



```shell

# usage

dokku rabbitmq:logs  [-t|--tail] 

```



flags:



- `-t|--tail []`: do not stop when end of the logs are reached and wait for additional output



You can tail logs for a particular service:



```shell

dokku rabbitmq:logs lollipop

```



By default, logs will not be tailed, but you can do this with the --tail flag:



```shell

dokku rabbitmq:logs lollipop --tail

```



The default tail setting is to show all logs, but an initial count can also be specified:



```shell

dokku rabbitmq:logs lollipop --tail 5

```



### link the rabbitmq service to the app



```shell

# usage

dokku rabbitmq:link   [--link-flags...]

```



flags:



- `-a|--alias "BLUE_DATABASE"`: an alternative alias to use for linking to an app via environment variable

- `-q|--querystring "pool=5"`: ampersand delimited querystring arguments to append to the service link

- `-n|--no-restart "false"`: whether or not to restart the app on link (default: true)



A rabbitmq service can be linked to a container. This will use native docker links via the docker-options plugin. Here we link it to our `playground` app.



> NOTE: this will restart your app



```shell

dokku rabbitmq:link lollipop playground

```



The following environment variables will be set automatically by docker (not on the app itself, so they won’t be listed when calling dokku config):



```

DOKKU_RABBITMQ_LOLLIPOP_NAME=/lollipop/DATABASE

DOKKU_RABBITMQ_LOLLIPOP_PORT=tcp://172.17.0.1:5672

DOKKU_RABBITMQ_LOLLIPOP_PORT_5672_TCP=tcp://172.17.0.1:5672

DOKKU_RABBITMQ_LOLLIPOP_PORT_5672_TCP_PROTO=tcp

DOKKU_RABBITMQ_LOLLIPOP_PORT_5672_TCP_PORT=5672

DOKKU_RABBITMQ_LOLLIPOP_PORT_5672_TCP_ADDR=172.17.0.1

```



The following will be set on the linked application by default:



```

RABBITMQ_URL=amqp://lollipop:SOME_PASSWORD@dokku-rabbitmq-lollipop:5672/lollipop

```



The host exposed here only works internally in docker containers. If you want your container to be reachable from outside, you should use the `expose` subcommand. Another service can be linked to your app:



```shell

dokku rabbitmq:link other_service playground

```



It is possible to change the protocol for `RABBITMQ_URL` by setting the environment variable `RABBITMQ_DATABASE_SCHEME` on the app. Doing so will after linking will cause the plugin to think the service is not linked, and we advise you to unlink before proceeding.



```shell

dokku config:set playground RABBITMQ_DATABASE_SCHEME=amqp2

dokku rabbitmq:link lollipop playground

```



This will cause `RABBITMQ_URL` to be set as:



```

amqp2://lollipop:SOME_PASSWORD@dokku-rabbitmq-lollipop:5672/lollipop

```



### unlink the rabbitmq service from the app



```shell

# usage

dokku rabbitmq:unlink  

```



flags:



- `-n|--no-restart "false"`: whether or not to restart the app on unlink (default: true)



You can unlink a rabbitmq service:



> NOTE: this will restart your app and unset related environment variables



```shell

dokku rabbitmq:unlink lollipop playground

```



### set or clear a property for a service



```shell

# usage

dokku rabbitmq:set   

```



Set the network to attach after the service container is started:



```shell

dokku rabbitmq:set lollipop post-create-network custom-network

```



Set multiple networks:



```shell

dokku rabbitmq:set lollipop post-create-network custom-network,other-network

```



Unset the post-create-network value:



```shell

dokku rabbitmq:set lollipop post-create-network

```



### Service Lifecycle



The lifecycle of each service can be managed through the following commands:



### enter or run a command in a running rabbitmq service container



```shell

# usage

dokku rabbitmq:enter 

```



A bash prompt can be opened against a running service. Filesystem changes will not be saved to disk.



> NOTE: disconnecting from ssh while running this command may leave zombie processes due to moby/moby#9098



```shell

dokku rabbitmq:enter lollipop

```



You may also run a command directly against the service. Filesystem changes will not be saved to disk.



```shell

dokku rabbitmq:enter lollipop touch /tmp/test

```



### expose a rabbitmq service on custom host:port if provided (random port on the 0.0.0.0 interface if otherwise unspecified)



```shell

# usage

dokku rabbitmq:expose  

```



Expose the service on the service's normal ports, allowing access to it from the public interface (`0.0.0.0`):



```shell

dokku rabbitmq:expose lollipop 5672 4369 35197 15672

```



Expose the service on the service's normal ports, with the first on a specified ip address (127.0.0.1):



```shell

dokku rabbitmq:expose lollipop 127.0.0.1:5672 4369 35197 15672

```



### unexpose a previously exposed rabbitmq service



```shell

# usage

dokku rabbitmq:unexpose 

```



Unexpose the service, removing access to it from the public interface (`0.0.0.0`):



```shell

dokku rabbitmq:unexpose lollipop

```



### promote service  as RABBITMQ_URL in 



```shell

# usage

dokku rabbitmq:promote  

```



If you have a rabbitmq service linked to an app and try to link another rabbitmq service another link environment variable will be generated automatically:



```

DOKKU_RABBITMQ_BLUE_URL=amqp://other_service:ANOTHER_PASSWORD@dokku-rabbitmq-other-service:5672/other_service

```



You can promote the new service to be the primary one:



> NOTE: this will restart your app



```shell

dokku rabbitmq:promote other_service playground

```



This will replace `RABBITMQ_URL` with the url from other_service and generate another environment variable to hold the previous value if necessary. You could end up with the following for example:



```

RABBITMQ_URL=amqp://other_service:ANOTHER_PASSWORD@dokku-rabbitmq-other-service:5672/other_service

DOKKU_RABBITMQ_BLUE_URL=amqp://other_service:ANOTHER_PASSWORD@dokku-rabbitmq-other-service:5672/other_service

DOKKU_RABBITMQ_SILVER_URL=amqp://lollipop:SOME_PASSWORD@dokku-rabbitmq-lollipop:5672/lollipop

```



### start a previously stopped rabbitmq service



```shell

# usage

dokku rabbitmq:start 

```



Start the service:



```shell

dokku rabbitmq:start lollipop

```



### stop a running rabbitmq service



```shell

# usage

dokku rabbitmq:stop 

```



Stop the service and removes the running container:



```shell

dokku rabbitmq:stop lollipop

```



### pause a running rabbitmq service



```shell

# usage

dokku rabbitmq:pause 

```



Pause the running container for the service:



```shell

dokku rabbitmq:pause lollipop

```



### graceful shutdown and restart of the rabbitmq service container



```shell

# usage

dokku rabbitmq:restart 

```



Restart the service:



```shell

dokku rabbitmq:restart lollipop

```



### upgrade service  to the specified versions



```shell

# usage

dokku rabbitmq:upgrade  [--upgrade-flags...]

```



flags:



- `-c|--config-options "--args --go=here"`: extra arguments to pass to the container create command (default: `None`)

- `-C|--custom-env "USER=alpha;HOST=beta"`: semi-colon delimited environment variables to start the service with

- `-i|--image IMAGE`: the image name to start the service with

- `-I|--image-version IMAGE_VERSION`: the image version to start the service with

- `-N|--initial-network INITIAL_NETWORK`: the initial network to attach the service to

- `-P|--post-create-network NETWORKS`: a comma-separated list of networks to attach the service container to after service creation

- `-R|--restart-apps "true"`: whether or not to force an app restart (default: false)

- `-S|--post-start-network NETWORKS`: a comma-separated list of networks to attach the service container to after service start

- `-s|--shm-size SHM_SIZE`: override shared memory size for rabbitmq docker container



You can upgrade an existing service to a new image or image-version:



```shell

dokku rabbitmq:upgrade lollipop

```



### Service Automation



Service scripting can be executed using the following commands:



### list all rabbitmq service links for a given app



```shell

# usage

dokku rabbitmq:app-links 

```



List all rabbitmq services that are linked to the `playground` app.



```shell

dokku rabbitmq:app-links playground

```



### check if the rabbitmq service exists



```shell

# usage

dokku rabbitmq:exists 

```



Here we check if the lollipop rabbitmq service exists.



```shell

dokku rabbitmq:exists lollipop

```



### check if the rabbitmq service is linked to an app



```shell

# usage

dokku rabbitmq:linked  

```



Here we check if the lollipop rabbitmq service is linked to the `playground` app.



```shell

dokku rabbitmq:linked lollipop playground

```



### list all apps linked to the rabbitmq service



```shell

# usage

dokku rabbitmq:links 

```



List all apps linked to the `lollipop` rabbitmq service.



```shell

dokku rabbitmq:links lollipop

```

### Backups



Datastore backups are supported via AWS S3 and S3 compatible services like [minio](https://github.com/minio/minio).



You may skip the `backup-auth` step if your dokku install is running within EC2 and has access to the bucket via an IAM profile. In that case, use the `--use-iam` option with the `backup` command.



Backups can be performed using the backup commands:



### set GPG Public Key encryption for all future backups of rabbitmq service



```shell

# usage

dokku rabbitmq:backup-set-public-key-encryption  

```



Set the `GPG` Public Key for encrypting backups:



```shell

dokku rabbitmq:backup-set-public-key-encryption lollipop

```



### unset GPG Public Key encryption for future backups of the rabbitmq service



```shell

# usage

dokku rabbitmq:backup-unset-public-key-encryption 

```



Unset the `GPG` Public Key encryption for backups:



```shell

dokku rabbitmq:backup-unset-public-key-encryption lollipop

```



### Disabling `docker image pull` calls



If you wish to disable the `docker image pull` calls that the plugin triggers, you may set the `RABBITMQ_DISABLE_PULL` environment variable to `true`. Once disabled, you will need to pull the service image you wish to deploy as shown in the `stderr` output.



Please ensure the proper images are in place when `docker image pull` is disabled.