3h4x/prometheus-mongodb-3.4-exporter repository overview

⁠Features

• MongoDB Server Status metrics (cursors, operations, indexes, storage, etc)
• MongoDB Replica Set metrics (members, ping, replication lag, etc)
• MongoDB Replication Oplog metrics (size, length in time, etc)
• MongoDB Sharding metrics (shards, chunks, db/collections, balancer operations)
• MongoDB RocksDB storage-engine metrics (levels, compactions, cache usage, i/o rates, etc)
• MongoDB WiredTiger storage-engine metrics (cache, blockmanger, tickets, etc)

⁠Building and running

⁠Building

make

⁠Running

To define your own MongoDB URL, use environment variable MONGODB_URL. If set this variable takes precedence over -mongodb.uri flag.

To enable HTTP basic authentication, set environment variable HTTP_AUTH to user:password pair. Alternatively, you can use YAML file with server_user and server_password fields.

export MONGODB_URL='mongodb://localhost:27017'
export HTTP_AUTH='user:password'
./mongodb_exporter <flags>

⁠Flags

See the help page with -h.

If you use MongoDB Authorization⁠, you must:

1. Create a user with 'clusterMonitor' role and 'read' on the 'local' database, like the following (replace username/password!):

db.getSiblingDB("admin").createUser({
    user: "mongodb_exporter",
    pwd: "s3cr3tpassw0rd",
    roles: [
        { role: "clusterMonitor", db: "admin" },
        { role: "read", db: "local" }
    ]
})

1. Set environment variable MONGODB_URL before starting the exporter:

export MONGODB_URL=mongodb://mongodb_exporter:s3cr3tpassw0rd@localhost:27017

⁠Note about how this works

Point the process to any mongo port and it will detect if it is a mongos, replicaset member, or stand alone mongod and return the appropriate metrics for that type of node. This was done to preent the need to an exporter per type of process.