DNS
Custom domains
Hostnames on your own domain that follow the primary.
With a DNS account connected, Databasify creates hostnames for every database under db.<your-domain> and keeps them pointing at the right nodes. Cloudflare is the supported DNS provider. Plugins can add others.
Connect Cloudflare
- In Cloudflare, open My Profile → API Tokens and create a token with these permissions for the domains you want to use:
Zone → Zone → ReadandZone → DNS → Edit. - In Databasify, go to DNS → Add DNS account, pick Cloudflare and paste the token. It is checked before saving and stored encrypted.
- Name the account and choose Check and add. Its domains are imported. Use Refresh domains after you give the token access to more zones.
Give a database a domain
On the database's Settings tab, choose Pick a domain under Domain and save. For a database named app-db on example.com, Databasify publishes:
| Hostname | Points to |
|---|---|
app-db.db.example.com | the primary |
private-app-db.db.example.com | the primary's private address |
replica-app-db.db.example.com | the standbys |
private-replica-app-db.db.example.com | the standbys' private addresses |
<node-name>.db.example.com | each read-only node |
For MongoDB, Databasify also publishes an SRV and a TXT record so clients can connect with mongodb+srv://.
How records are kept up to date
- Records are checked every minute and follow the primary after a failover. They only move when exactly one node claims to be primary.
- Records have a 60-second TTL. After a failover, clients may reach the old address for about a minute plus the TTL plus their own resolver cache.
- Records are DNS-only. Keep Cloudflare's proxy off for them.
- Each node's certificate covers its hostnames. Valkey and Redis databases with a domain get a public Let's Encrypt wildcard certificate for
*.db.<your-domain>, so clients can verify the server without the CA. - Hostnames are checked to be free before they are claimed, and records are removed when the database is deleted.
- A failed sync shows up as a failed Sync DNS records entry in the database's activity and is retried on every refresh.
Removing an account
A DNS account cannot be removed while a database uses one of its domains. Removing it makes Databasify forget the token; nothing changes in your DNS.