dokku omnisci

Official omnisci plugin for dokku. Currently defaults to installing omnisci/core-os-cpu v5.10.2.

Requirements

• dokku 0.19.x+
• docker 1.8.x

Installation

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

Commands

omnisci:app-links <app>                            # list all omnisci service links for a given app
omnisci:connect <service>                          # connect to the service via the omnisci connection tool
omnisci:create <service> [--create-flags...]       # create a omnisci service
omnisci:destroy <service> [-f|--force]             # delete the omnisci service/data/container if there are no links left
omnisci:enter <service>                            # enter or run a command in a running omnisci service container
omnisci:exists <service>                           # check if the omnisci service exists
omnisci:expose <service> <ports...>                # expose a omnisci service on custom host:port if provided (random port on the 0.0.0.0 interface if otherwise unspecified)
omnisci:info <service> [--single-info-flag]        # print the service information
omnisci:link <service> <app> [--link-flags...]     # link the omnisci service to the app
omnisci:linked <service> <app>                     # check if the omnisci service is linked to an app
omnisci:links <service>                            # list all apps linked to the omnisci service
omnisci:list                                       # list all omnisci services
omnisci:logs <service> [-t|--tail] <tail-num-optional> # print the most recent log(s) for this service
omnisci:pause <service>                            # pause a running omnisci service
omnisci:promote <service> <app>                    # promote service <service> as OMNISCI_URL in <app>
omnisci:restart <service>                          # graceful shutdown and restart of the omnisci service container
omnisci:set <service> <key> <value>                # set or clear a property for a service
omnisci:start <service>                            # start a previously stopped omnisci service
omnisci:stop <service>                             # stop a running omnisci service
omnisci:unexpose <service>                         # unexpose a previously exposed omnisci service
omnisci:unlink <service> <app>                     # unlink the omnisci service from the app
omnisci:upgrade <service> [--upgrade-flags...]     # upgrade service <service> to the specified versions

Usage

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

Basic Usage

create a omnisci service

# usage
dokku omnisci:create <service> [--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 omnisci docker container

Create a omnisci service named lollipop:

dokku omnisci:create lollipop

You can also specify the image and image version to use for the service. It must be compatible with the omnisci/core-os-cpu image.

export OMNISCI_IMAGE="omnisci/core-os-cpu"
export OMNISCI_IMAGE_VERSION="${PLUGIN_IMAGE_VERSION}"
dokku omnisci:create lollipop

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

export OMNISCI_CUSTOM_ENV="USER=alpha;HOST=beta"
dokku omnisci:create lollipop

print the service information

# usage
dokku omnisci:info <service> [--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:

dokku omnisci:info lollipop

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

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

list all omnisci services

# usage
dokku omnisci:list

List all services:

dokku omnisci:list

print the most recent log(s) for this service

# usage
dokku omnisci:logs <service> [-t|--tail] <tail-num-optional>

flags:

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

You can tail logs for a particular service:

dokku omnisci:logs lollipop

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

dokku omnisci:logs lollipop --tail

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

dokku omnisci:logs lollipop --tail 5

link the omnisci service to the app

# usage
dokku omnisci:link <service> <app> [--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 omnisci 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

dokku omnisci: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_OMNISCI_LOLLIPOP_NAME=/lollipop/DATABASE
DOKKU_OMNISCI_LOLLIPOP_PORT=tcp://172.17.0.1:6274
DOKKU_OMNISCI_LOLLIPOP_PORT_6274_TCP=tcp://172.17.0.1:6274
DOKKU_OMNISCI_LOLLIPOP_PORT_6274_TCP_PROTO=tcp
DOKKU_OMNISCI_LOLLIPOP_PORT_6274_TCP_PORT=6274
DOKKU_OMNISCI_LOLLIPOP_PORT_6274_TCP_ADDR=172.17.0.1

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

OMNISCI_URL=omnisci://lollipop:SOME_PASSWORD@dokku-omnisci-lollipop:6274/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:

dokku omnisci:link other_service playground

It is possible to change the protocol for OMNISCI_URL by setting the environment variable OMNISCI_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.

dokku config:set playground OMNISCI_DATABASE_SCHEME=omnisci2
dokku omnisci:link lollipop playground

This will cause OMNISCI_URL to be set as:

omnisci2://lollipop:SOME_PASSWORD@dokku-omnisci-lollipop:6274/lollipop

unlink the omnisci service from the app

# usage
dokku omnisci:unlink <service> <app>

flags:

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

You can unlink a omnisci service:

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

dokku omnisci:unlink lollipop playground

set or clear a property for a service

# usage
dokku omnisci:set <service> <key> <value>

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

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

Set multiple networks:

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

Unset the post-create-network value:

dokku omnisci:set lollipop post-create-network

Service Lifecycle

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

connect to the service via the omnisci connection tool

# usage
dokku omnisci:connect <service>

Connect to the service via the omnisci connection tool:

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

dokku omnisci:connect lollipop

enter or run a command in a running omnisci service container

# usage
dokku omnisci:enter <service>

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

dokku omnisci:enter lollipop

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

dokku omnisci:enter lollipop touch /tmp/test

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

# usage
dokku omnisci:expose <service> <ports...>

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

dokku omnisci:expose lollipop 6274 6278

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

dokku omnisci:expose lollipop 127.0.0.1:6274 6278

unexpose a previously exposed omnisci service

# usage
dokku omnisci:unexpose <service>

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

dokku omnisci:unexpose lollipop

promote service as OMNISCI_URL in

# usage
dokku omnisci:promote <service> <app>

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

DOKKU_OMNISCI_BLUE_URL=omnisci://other_service:ANOTHER_PASSWORD@dokku-omnisci-other-service:6274/other_service

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

NOTE: this will restart your app

dokku omnisci:promote other_service playground

This will replace OMNISCI_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:

OMNISCI_URL=omnisci://other_service:ANOTHER_PASSWORD@dokku-omnisci-other-service:6274/other_service
DOKKU_OMNISCI_BLUE_URL=omnisci://other_service:ANOTHER_PASSWORD@dokku-omnisci-other-service:6274/other_service
DOKKU_OMNISCI_SILVER_URL=omnisci://lollipop:SOME_PASSWORD@dokku-omnisci-lollipop:6274/lollipop

start a previously stopped omnisci service

# usage
dokku omnisci:start <service>

Start the service:

dokku omnisci:start lollipop

stop a running omnisci service

# usage
dokku omnisci:stop <service>

Stop the service and removes the running container:

dokku omnisci:stop lollipop

pause a running omnisci service

# usage
dokku omnisci:pause <service>

Pause the running container for the service:

dokku omnisci:pause lollipop

graceful shutdown and restart of the omnisci service container

# usage
dokku omnisci:restart <service>

Restart the service:

dokku omnisci:restart lollipop

upgrade service to the specified versions

# usage
dokku omnisci:upgrade <service> [--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 omnisci docker container

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

dokku omnisci:upgrade lollipop

Service Automation

Service scripting can be executed using the following commands:

list all omnisci service links for a given app

# usage
dokku omnisci:app-links <app>

List all omnisci services that are linked to the playground app.

dokku omnisci:app-links playground

check if the omnisci service exists

# usage
dokku omnisci:exists <service>

Here we check if the lollipop omnisci service exists.

dokku omnisci:exists lollipop

check if the omnisci service is linked to an app

# usage
dokku omnisci:linked <service> <app>

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

dokku omnisci:linked lollipop playground

list all apps linked to the omnisci service

# usage
dokku omnisci:links <service>

List all apps linked to the lollipop omnisci service.

dokku omnisci: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 OMNISCI_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.