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Bluesky PDS on Enterprise Linux 9

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Bluesky PDS on Enterprise Linux 9

This is more or less the instructions from https://github.com/bluesky-social/pds tweaked slightly for RHEL 9 / RockyLinux 9 / AlmaLinux 9 / Oracle Linux 9. As there is no x86_64 docker repo for EL9 we will use the CentOS Stream 9 repo.

sudo dnf -y install dnf-plugins-core sudo dnf config-manager –add-repo https://download.docker.com/linux/centos/docker-ce.repo

sudo dnf install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

sudo systemctl enable docker
sudo systemctl start docker
sudo docker run hello-world

sudo mkdir /pds
sudo mkdir --parents /pds/caddy/data
sudo mkdir --parents /pds/caddy/etc/caddy

dnf install vim-common     # necessary for xxd

Create the config file for the caddy reverse-proxy

cat <<CADDYFILE | sudo tee /pds/caddy/etc/caddy/Caddyfile
{
  email you@example.com
  on_demand_tls {
	ask http://localhost:3000
}
}

*.example.com, example.com {
  tls {
    on_demand
  }
  reverse_proxy http://localhost:3000
}
CADDYFILE

Alternate nginx configuration

I like to use nginx instead of caddy, see further down for preventing caddy from starting.

sudo docker ps

upstream pds {
  server 127.0.0.1:3000;
}

location / {
        proxy_pass http://pds;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
}

listen example.com:443

etc

It’s a good idea to use LetsEncrypt certbot at this point to install an SSL cert:

sudo dnf install certbot python3-certbot-nginx
sudo certbot --nginx -d example.com

Create the PDS env configuration file

PDS_HOSTNAME="example.com"
PDS_JWT_SECRET="$(openssl rand --hex 16)"
PDS_ADMIN_PASSWORD="$(openssl rand --hex 16)"
PDS_REPO_SIGNING_KEY_K256_PRIVATE_KEY_HEX="$(openssl ecparam --name secp256k1 --genkey --noout --outform DER |
tail --bytes=+8 | head --bytes=32 | xxd --plain --cols 32)"
PDS_PLC_ROTATION_KEY_K256_PRIVATE_KEY_HEX="$(openssl ecparam --name secp256k1 --genkey --noout --outform DER |
tail --bytes=+8 | head --bytes=32 | xxd --plain --cols 32)"

cat <<PDS_CONFIG | sudo tee /pds/pds.env
PDS_HOSTNAME=${PDS_HOSTNAME}
PDS_JWT_SECRET=${PDS_JWT_SECRET}
PDS_ADMIN_PASSWORD=${PDS_ADMIN_PASSWORD}
PDS_REPO_SIGNING_KEY_K256_PRIVATE_KEY_HEX=${PDS_REPO_SIGNING_KEY_K256_PRIVATE_KEY_HEX}
PDS_PLC_ROTATION_KEY_K256_PRIVATE_KEY_HEX=${PDS_PLC_ROTATION_KEY_K256_PRIVATE_KEY_HEX}
PDS_DB_SQLITE_LOCATION=/pds/pds.sqlite
PDS_BLOBSTORE_DISK_LOCATION=/pds/blocks
PDS_DID_PLC_URL=https://plc.bsky-sandbox.dev
PDS_BSKY_APP_VIEW_URL=https://api.bsky-sandbox.dev
PDS_BSKY_APP_VIEW_DID=did:web:api.bsky-sandbox.dev
PDS_CRAWLERS=https://bgs.bsky-sandbox.dev
PDS_CONFIG

Start the PDS containers

Download the compose.yaml to run your PDS, which includes the following containers:

Create the systemd service

cat <<SYSTEMD_UNIT_FILE >/etc/systemd/system/pds.service
[Unit]
Description=Bluesky PDS Service
Documentation=https://github.com/bluesky-social/pds
Requires=docker.service
After=docker.service

[Service]
Type=oneshot
RemainAfterExit=yes
WorkingDirectory=/pds
ExecStart=/usr/bin/docker compose --file /pds/compose.yaml up --detach
ExecStop=/usr/bin/docker compose --file /pds/compose.yaml down

[Install]
WantedBy=default.target
SYSTEMD_UNIT_FILE

Start the service

sudo systemctl daemon-reload
sudo systemctl enable pds
sudo systemctl start pds
sudo systemctl status pds
sudo docker ps

If you are using nginx, take note of the caddy container id, and stop it from restarting:

docker update --restart=no ded5f0df4be8b # your container ID
docker stop ed5f0df4be8b

Verify PDS is online

curl https://example.com/xrpc/_health
{"version":"0.2.2-beta.2"}

Obtain PDS password

$ source /pds/pds.env
$ echo $PDS_ADMIN_PASSWORD
a7b5970b6a5077bb41fc68a26d30adda

Generate an invite code for your PDS

PDS_HOSTNAME="example.com"
PDS_ADMIN_PASSWORD="<YOUR PDS ADMIN PASSWORD>"

curl --silent \
  --show-error \
  --request POST \
  --user "admin:${PDS_ADMIN_PASSWORD}" \
  --header "Content-Type: application/json" \
  --data '{"useCount": 1}' \
  https://${PDS_HOSTNAME}/xrpc/com.atproto.server.createInviteCode

Manually updating

sudo docker pull ghcr.io/bluesky-social/pds:latest
sudo systemctl restart pds