Migrating MongoDB to AnubizHost
MongoDB is widely used as a document store and migrates well between hosts via mongodump or replica set extension. This guide covers both approaches on AnubizHost offshore VPS, including tuning for production workloads and replica set setup for HA.
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Provision AnubizHost MongoDB Target
Order offshore VPS with at least 4GB RAM and disk for source data plus 30% headroom. Install MongoDB 7.0: apt install mongodb-org from the official MongoDB repo. Configure WiredTiger cache (default 50% of RAM minus 1GB), bind to private IP only if behind reverse proxy, enable authentication.
Path 1: mongodump + mongorestore
mongodump --uri="mongodb://user:pass@source:27017" --out=/tmp/dump
rsync -avz /tmp/dump/ root@NEW_IP:/tmp/dump/
mongorestore --uri="mongodb://user:pass@localhost:27017" /tmp/dump/For databases under 100GB, this is the simplest path. mongodump preserves indexes, views, and roles. Restore is generally faster than the dump.
Path 2: Replica Set Extension for Zero-Downtime
If the source is already a replica set: add the AnubizHost MongoDB as a new secondary, let it sync, then step down the source primary and promote the AnubizHost member.
rs.add({ host: "anubiz-host:27017", priority: 0, hidden: true })
// wait for sync to complete
rs.reconfig({ ... priority: 1 })
rs.stepDown()Application reads/writes follow the new primary. Remove the old members after confirmed stable operation.
Replica Set for HA on AnubizHost
Production MongoDB should run as a 3-member replica set. Deploy primary + secondary + arbiter across two AnubizHost VPS in different datacenters (Romania + Iceland) plus a small arbiter VPS. This gives jurisdiction redundancy and proper quorum.
Operational Tips
Enable WiredTiger compression (snappy default, zstd for better ratio). Use TLS for inter-node and client connections. Set up Prometheus monitoring with mongodb_exporter. Nightly mongodump backups to AnubizHost storage VPS. Related reading: database hosting, PostgreSQL migration, anonymous hosting.
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