Providing HA with Docker Compose
This section shows how to run Cells in a multi-node setup using out-of-the-box docker compose file.
Docker Compose file
Grab the compose file located at https://github.com/pydio/cells/blob/main/tools/docker/compose/ha/docker-compose.yml.
It defines the following services:
redisfor relational, json and KV stores
vaultfor configs, message broker and secret store.
miniofor exposing a file system as an S3 object storage
cells3multiple replicas of cells services
caddyas a frontend reverse proxy load-balancing on cells services
Setup and Deployment
Simple docker compose deployment to experiment with Cells v4 Clustering model.
pydio/cells:unstable docker image, use whatever image by editing the docker-compose.yml file.
Preparing and starting dependencies
HA deployments relies on external dependencies to make Cells image fully stateless. This sample creates the following images : MySQL, MongoDB, NATS.io, ETCD, Hashicorp Vault and Redis.
Some preparatory steps are required : create Minio buckets for shared storage, and create a specific key/value store in Vault.
cd <this folder>
# start all third-party services
docker compose up -d mysql mongo nats etcd vault redis minio caddy
# create buckets in minio
docker compose up createbuckets
# Create a dedicated kvstore for certificates in Vault (configured in DEV mode with a preset VAULT_TOKEN, this should not be the case in production)
docker compose exec -e VAULT_ADDR=http://localhost:8200 -e VAULT_TOKEN=secret_vault_token vault vault secrets enable -version=2 -path=caddycerts kv
Caddy load balancer is configured in self-signed mode with a
caddy domain name.
This requires adding
localhost => caddy domain name to your local /etc/hosts file.
Once started, the proxy will monitor cells instances on /pprofs endpoint to automatically enable/disable upstreams.
Running Cells Nodes
At first run, start a unique node to let it perform the automatic installation. This step is reading its values from the
conf/install-conf.yml file, you may change the frontendadmin / frontendpassword values to your own, otherwise default credentials are admin/admin.
Monitor the logs to check that installation is complete or simply open https://caddy:8585/ to check that you can log in with admin credentials.
docker compose up -d cells1; docker compose logs -f cells1
Now you can spin more cells nodes:
# Once install is finished, start other nodes
docker compose up -d cells2 cells3; docker compose logs -f cells2 cells3
At next run, you can start all three nodes at once.
Access https://caddy:8585/ to access Cells. Enjoy!
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# To clean everything
docker compose down -v --remove-orphans