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

a graphite, grafana, statsd, carbon plugin for dokku
https://github.com/dokku/dokku-graphite

dokku dokku-plugin dokku-service grafana graphite paas statsd

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a graphite, grafana, statsd, carbon plugin for dokku

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# dokku graphite [![Build Status](https://img.shields.io/github/actions/workflow/status/dokku/dokku-graphite/ci.yml?branch=master&style=flat-square "Build Status")](https://github.com/dokku/dokku-graphite/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 graphite plugin for dokku. Currently defaults to installing [dokku/docker-grafana-graphite 6.4.4](https://hub.docker.com/r/dokku/docker-grafana-graphite/).

## Requirements

- dokku 0.19.x+
- docker 1.8.x

## Installation

```shell
# on 0.19.x+
sudo dokku plugin:install https://github.com/dokku/dokku-graphite.git graphite
```

## Commands

```
graphite:app-links # list all graphite service links for a given app
graphite:create [--create-flags...] # create a graphite service
graphite:destroy [-f|--force] # delete the graphite service/data/container if there are no links left
graphite:enter # enter or run a command in a running graphite service container
graphite:exists # check if the graphite service exists
graphite:expose # expose a graphite service on custom host:port if provided (random port on the 0.0.0.0 interface if otherwise unspecified)
graphite:info [--single-info-flag] # print the service information
graphite:link [--link-flags...] # link the graphite service to the app
graphite:linked # check if the graphite service is linked to an app
graphite:links # list all apps linked to the graphite service
graphite:list # list all graphite services
graphite:logs [-t|--tail] # print the most recent log(s) for this service
graphite:nginx-expose # expose the graphite service's grafana via an nginx vhost
graphite:nginx-unexpose # expose the graphite service's grafana via an nginx vhost
graphite:pause # pause a running graphite service
graphite:promote # promote service as STATSD_URL in
graphite:restart # graceful shutdown and restart of the graphite service container
graphite:set # set or clear a property for a service
graphite:start # start a previously stopped graphite service
graphite:stop # stop a running graphite service
graphite:unexpose # unexpose a previously exposed graphite service
graphite:unlink # unlink the graphite service from the app
graphite: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 graphite:help. Plugin help output in conjunction with any files in the `docs/` folder is used to generate the plugin documentation. Please consult the `graphite:help` command for any undocumented commands.

### Basic Usage

### create a graphite service

```shell
# usage
dokku graphite: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 graphite docker container

Create a graphite service named lollipop:

```shell
dokku graphite:create lollipop
```

You can also specify the image and image version to use for the service. It *must* be compatible with the dokku/docker-grafana-graphite image.

```shell
export STATSD_IMAGE="dokku/docker-grafana-graphite"
export STATSD_IMAGE_VERSION="${PLUGIN_IMAGE_VERSION}"
dokku graphite:create lollipop
```

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

```shell
export STATSD_CUSTOM_ENV="USER=alpha;HOST=beta"
dokku graphite:create lollipop
```

### print the service information

```shell
# usage
dokku graphite: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 graphite:info lollipop
```

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

```shell
dokku graphite:info lollipop --config-dir
dokku graphite:info lollipop --data-dir
dokku graphite:info lollipop --dsn
dokku graphite:info lollipop --exposed-ports
dokku graphite:info lollipop --id
dokku graphite:info lollipop --internal-ip
dokku graphite:info lollipop --initial-network
dokku graphite:info lollipop --links
dokku graphite:info lollipop --post-create-network
dokku graphite:info lollipop --post-start-network
dokku graphite:info lollipop --service-root
dokku graphite:info lollipop --status
dokku graphite:info lollipop --version
```

### list all graphite services

```shell
# usage
dokku graphite:list
```

List all services:

```shell
dokku graphite:list
```

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

```shell
# usage
dokku graphite: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 graphite:logs lollipop
```

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

```shell
dokku graphite:logs lollipop --tail
```

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

```shell
dokku graphite:logs lollipop --tail 5
```

### link the graphite service to the app

```shell
# usage
dokku graphite: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 graphite 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 graphite: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_STATSD_LOLLIPOP_NAME=/lollipop/DATABASE
DOKKU_STATSD_LOLLIPOP_PORT=tcp://172.17.0.1:8125
DOKKU_STATSD_LOLLIPOP_PORT_8125_TCP=tcp://172.17.0.1:8125
DOKKU_STATSD_LOLLIPOP_PORT_8125_TCP_PROTO=tcp
DOKKU_STATSD_LOLLIPOP_PORT_8125_TCP_PORT=8125
DOKKU_STATSD_LOLLIPOP_PORT_8125_TCP_ADDR=172.17.0.1
```

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

```
STATSD_URL=statsd://dokku-graphite-lollipop:8125
```

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 graphite:link other_service playground
```

It is possible to change the protocol for `STATSD_URL` by setting the environment variable `STATSD_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 STATSD_DATABASE_SCHEME=statsd2
dokku graphite:link lollipop playground
```

This will cause `STATSD_URL` to be set as:

```
statsd2://dokku-graphite-lollipop:8125
```

### unlink the graphite service from the app

```shell
# usage
dokku graphite:unlink
```

flags:

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

You can unlink a graphite service:

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

```shell
dokku graphite:unlink lollipop playground
```

### set or clear a property for a service

```shell
# usage
dokku graphite:set
```

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

```shell
dokku graphite:set lollipop post-create-network custom-network
```

Set multiple networks:

```shell
dokku graphite:set lollipop post-create-network custom-network,other-network
```

Unset the post-create-network value:

```shell
dokku graphite: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 graphite service container

```shell
# usage
dokku graphite: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 graphite:enter lollipop
```

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

```shell
dokku graphite:enter lollipop touch /tmp/test
```

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

```shell
# usage
dokku graphite:expose
```

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

```shell
dokku graphite:expose lollipop 8125 8126 80 81 2003
```

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

```shell
dokku graphite:expose lollipop 127.0.0.1:8125 8126 80 81 2003
```

### unexpose a previously exposed graphite service

```shell
# usage
dokku graphite:unexpose
```

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

```shell
dokku graphite:unexpose lollipop
```

### promote service as STATSD_URL in

```shell
# usage
dokku graphite:promote
```

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

```
DOKKU_STATSD_BLUE_URL=statsd://other_service:ANOTHER_PASSWORD@dokku-graphite-other-service:8125/other_service
```

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

> NOTE: this will restart your app

```shell
dokku graphite:promote other_service playground
```

This will replace `STATSD_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:

```
STATSD_URL=statsd://other_service:ANOTHER_PASSWORD@dokku-graphite-other-service:8125/other_service
DOKKU_STATSD_BLUE_URL=statsd://other_service:ANOTHER_PASSWORD@dokku-graphite-other-service:8125/other_service
DOKKU_STATSD_SILVER_URL=statsd://lollipop:SOME_PASSWORD@dokku-graphite-lollipop:8125/lollipop
```

### start a previously stopped graphite service

```shell
# usage
dokku graphite:start
```

Start the service:

```shell
dokku graphite:start lollipop
```

### stop a running graphite service

```shell
# usage
dokku graphite:stop
```

Stop the service and removes the running container:

```shell
dokku graphite:stop lollipop
```

### pause a running graphite service

```shell
# usage
dokku graphite:pause
```

Pause the running container for the service:

```shell
dokku graphite:pause lollipop
```

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

```shell
# usage
dokku graphite:restart
```

Restart the service:

```shell
dokku graphite:restart lollipop
```

### upgrade service to the specified versions

```shell
# usage
dokku graphite: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 graphite docker container

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

```shell
dokku graphite:upgrade lollipop
```

### Service Automation

Service scripting can be executed using the following commands:

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

```shell
# usage
dokku graphite:app-links
```

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

```shell
dokku graphite:app-links playground
```

### check if the graphite service exists

```shell
# usage
dokku graphite:exists
```

Here we check if the lollipop graphite service exists.

```shell
dokku graphite:exists lollipop
```

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

```shell
# usage
dokku graphite:linked
```

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

```shell
dokku graphite:linked lollipop playground
```

### list all apps linked to the graphite service

```shell
# usage
dokku graphite:links
```

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

```shell
dokku graphite:links lollipop
```

### Disabling `docker image pull` calls

If you wish to disable the `docker image pull` calls that the plugin triggers, you may set the `GRAPHITE_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.