Using docker compose

You can run SEEK in Docker together with MySQL and SOLR running in its own containers as micro-services. To do this you use Docker Compose. See the Docker Compose Installation Guide for how to install.

Once installed, all that is needed is the docker-compose.yml, and the docker/db.env, although you can simply check out the SEEK source from GitHub - see Getting SEEK.

First you need to create 4 volumes

docker volume create --name=seek-filestore
docker volume create --name=seek-mysql-db
docker volume create --name=seek-solr-data
docker volume create --name=seek-cache

and then to start up, with the docker-compose.yml in your currently directory run

docker-compose up -d

and go to http://localhost:3000. There may be a short delay before you can connect, especially if this is the first time and various things are being initialized.

to stop run

docker-compose down

You change the port, and image in the docker-compose.yml by editing

    image: fairdom/seek:1.7
          - "3000:3000"

Proxy through NGINX

An alternative to changing the port (particularly if running several instances on same machine), you can proxy through Apache or Nginx. E.g. for Nginx you would configure a virtual host like the following:

server {
    listen 80; 
    client_max_body_size 2G;
    location / {
        proxy_set_header   X-Real-IP $remote_addr;
        proxy_set_header   Host      $host;
        proxy_set_header   X-Forwarded-Proto $scheme;

You would also want to configure for HTTPS (port 443), and would strongly recommend using Lets Encrypt for free SSL certificates.

Backup and Restore

To backup the MySQL database and seek filestore, you will need to mount the volumes into a temporary container. Don’t try backing up by copying the volumes directly from the host system. The following gives an example of a basic procedure, but we recommend you read Backup, restore, or migrate data volumes and are familiar with what the steps mean.

docker-compose stop
docker run --rm --volumes-from seek -v $(pwd):/backup ubuntu tar cvf /backup/seek-filestore.tar /seek/filestore
docker run --rm --volumes-from seek-mysql -v $(pwd):/backup ubuntu tar cvf /backup/seek-mysql-db.tar /var/lib/mysql
docker-compose start -d

and to restore into new volumes:

docker-compose down
docker volume rm seek-filestore # this and the next step only necessary if you want to recreate existing volumes
docker volume rm seek-mysql-db     
docker volume create --name=seek-filestore
docker volume create --name=seek-mysql-db
docker-compose up --no-start
docker run --rm --volumes-from seek -v $(pwd):/backup ubuntu bash -c "tar xfv /backup/seek-filestore.tar"
docker run --rm --volumes-from seek-mysql -v $(pwd):/backup ubuntu bash -c "tar xfv /backup/seek-mysql-db.tar"
docker-compose up -d        

Note that the cache and solr index don’t need backing up. Once up and running, if necessary the solr index can be regenerated with:

docker exec seek bundle exec rake reindex:all

Upgrading between versions

The process is very similar to Upgrading a Basic Container.

First update the docker-compose.yml for the new version. You will be able to tell the version from the image tag - e.g for 1.7

image: fairdom/seek:1.7

using the new docker-compose.yml do:

docker-compose down
docker-compose pull
docker-compose up -d seek db solr            # avoiding the seek-workers, which will interfere    
docker exec -it seek docker/
docker-compose down
docker-compose up -d