What is Apache Solr?

Solr is the popular, blazing-fast, open source enterprise search platform built on Apache Lucene.

http://lucene.apache.org/solr/

TLDR

docker run --name solr bitnami/solr:latest

Docker Compose

solr:
  image: bitnami/solr:latest

Get this image

The recommended way to get the Bitnami solr Docker Image is to pull the prebuilt image from the Docker Hub Registry.

docker pull bitnami/solr:latest

To use a specific version, you can pull a versioned tag. You can view the list of available versions in the Docker Hub Registry.

docker pull bitnami/solr:[TAG]

If you wish, you can also build the image yourself.

docker build -t bitnami/solr:latest https://github.com/bitnami/bitnami-docker-solr.git

Persisting your application

If you remove every container and volume all your data will be lost, and the next time you run the image the application will be reinitialized. To avoid this loss of data, you should mount a volume that will persist even after the container is removed. If you are using docker-compose your data will be persistent as long as you don't remove application_data data volumes. If you have run the containers manually or you want to mount the folders with persistent data in your host follow the next steps:

Note! If you have already started using your application, follow the steps on backing up to pull the data from your running container down to your host.

The image exposes a volume at /bitnami/solr for the solr data and configurations. For persistence you can mount a directory at this location from your host. If the mounted directory is empty, it will be initialized on the first run.

docker run -v /path/to/solr-persistence:/bitnami/solr bitnami/solr:latest

or using Docker Compose:

solr:
  image: bitnami/solr:latest
  volumes:
    - /path/to/solr-persistence:/bitnami/solr

Connecting to other containers

Using Docker container networking, a MariaDB server running inside a container can easily be accessed by your application containers.

Containers attached to the same network can communicate with each other using the container name as the hostname.

Using the Command Line

Step 1: Create a network

$ docker network create solr-network --driver bridge

Step 2: Launch the solr container within your network

Use the --network <NETWORK> argument to the docker run command to attach the container to the solr-network network.

docker run --name solr-node1 --network solr-network bitnami/solr:latest

Step 3: Run another containes

We can launch another containers using the same flag (--network NETWORK) in the docker run command. If you also set a name to your container, you will be able to use it as hostname in your network.

Using Docker Compose

When not specified, Docker Compose automatically sets up a new network and attaches all deployed services to that network. However, we will explicitly define a new bridge network named solr-network.

version: '2'

networks:
  solr-network:
    driver: bridge

services:
  solr-node1:
    image: bitnami/solr:latest
    networks:
      - solr-network
    ports:
      - '8983:8983'
  solr-node2:
    image: bitnami/solr:latest
    networks:
      - solr-network
    ports:
      - '8984:8984'

Then, launch the containers using:

$ docker-compose up -d

Configuration

Environment variables

When you start the solr image, you can adjust the configuration of the instance by passing one or more environment variables either on the docker-compose file or on the docker run command line. The following environment values are provided to custom Solr:

• SOLR_PORT: Port used by Solr server. Default: 8983
• SOLR_SERVER_DIRECTORY: Specify the Solr server directory. Default: server
• SOLR_CORE: Core name to create at first run. By default, it will not create a core. (E.g.: 'my_core')
• SOLR_CORE_CONF_DIR: Configuration directory to copy when creating a new core. Default: data_driven_schema_configs

Specifying Environment Variables using Docker Compose

solr:
  image: bitnami/solr:latest
  environment:
    - SOLR_CORE=my_core

Specifying Environment Variables on the Docker command line

$ docker run -d -e SOLR_CORE=my_core --name solr bitnami/solr:latest

Using your Apache Solr Cores configuration files

In order to load your own configuration files, you will have to make them available to the container. You can do it mounting a volume in the desired location and setting the environment variable with the customized value (as it is pointed above, the default value is data_driven_schema_configs).

Using Docker Compose

solr:
  image: bitnami/solr:latest
  environment:
    - SOLR_CORE_CONF_DIR=/path/to/your/confDir
  volumes:
    - '/local/path/to/your/confDir:/container/path/to/your/confDir'

Logging

The Bitnami solr Docker image sends the container logs to the stdout. To view the logs:

docker logs solr

or using Docker Compose:

docker-compose logs solr

You can configure the containers logging driver using the --log-driver option if you wish to consume the container logs differently. In the default configuration docker uses the json-file driver.

Maintenance

Backing up your container

To backup your data, configuration and logs, follow these simple steps:

Step 1: Stop the currently running container

docker stop solr

or using Docker Compose:

docker-compose stop solr

Step 2: Run the backup command

We need to mount two volumes in a container we will use to create the backup: a directory on your host to store the backup in, and the volumes from the container we just stopped so we can access the data.

docker run --rm -v /path/to/solr-backups:/backups --volumes-from solr busybox \
  cp -a /bitnami/solr:latest /backups/latest

or using Docker Compose:

docker run --rm -v /path/to/solr-backups:/backups --volumes-from `docker-compose ps -q solr` busybox \
  cp -a /bitnami/solr:latest /backups/latest

Restoring a backup

Restoring a backup is as simple as mounting the backup as volumes in the container.

docker run -v /path/to/solr-backups/latest:/bitnami/solr bitnami/solr:latest

or using Docker Compose:

solr:
  image: bitnami/solr:latest
  volumes:
    - /path/to/solr-backups/latest:/bitnami/solr

Upgrade this image

Bitnami provides up-to-date versions of solr, including security patches, soon after they are made upstream. We recommend that you follow these steps to upgrade your container.

Step 1: Get the updated image

docker pull bitnami/solr:latest

or if you're using Docker Compose, update the value of the image property to bitnami/solr:latest.

Step 2: Stop and backup the currently running container

Before continuing, you should backup your container's data, configuration and logs.

Follow the steps on creating a backup.

Step 3: Remove the currently running container

docker rm -v solr

or using Docker Compose:

docker-compose rm -v solr

Step 4: Run the new image

Re-create your container from the new image, restoring your backup if necessary.

docker run --name solr bitnami/solr:latest

or using Docker Compose:

docker-compose start solr

Contributing

We'd love for you to contribute to this container. You can request new features by creating an issue, or submit a pull request with your contribution.

Issues

If you encountered a problem running this container, you can file an issue. For us to provide better support, be sure to include the following information in your issue:

• Host OS and version
• Docker version (docker version)
• Output of docker info
• Version of this container (echo $BITNAMI_IMAGE_VERSION inside the container)
• The command you used to run the container, and any relevant output you saw (masking any sensitive information)

License

Copyright (c) 2016 Bitnami

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.