Browse incidents, troubleshooting guides, AI diagnostics, verified fixes and community discussions related to MongoDB.
## Environment MongoDB 4.4 replica set (3 nodes) on Linux VMs with WiredTiger, collection with ~500M documents, primary handles write traffic during nightly batch imports while a createIndex is running on a large field. ## Symptoms During the inde...
## Environment MongoDB 5.0 replica set (3 members) on Ubuntu 20.04 servers with 32GB RAM, WiredTiger cache configured to 60% of RAM (~18GB), NVMe-backed data directories; application performs sustained bulk inserts in batches of 10k documents. ## S...
## Environment Three-node MongoDB replica set: primary (m5.large, AWS us-east-1), secondary (m5.large), and a third node added as an arbiter on a low-power t3.small instance in a different AZ. MongoDB 4.4.10, WiredTiger, journaling enabled. Network ...
## Environment Sharded MongoDB 6.0 cluster: three replica sets for shards, each with primary and two secondaries. Internal cluster traffic uses TLS mutual authentication (certs rotated from an internal CA). Observed on AWS VPC across three AZs with ...