Monitoring MongoDB

This plugin keeps track of your MongoDB instance.

MongoDB Metrics

• asserts.msg
• asserts.regular
• asserts.rollovers
• asserts.user
• asserts.warning
• connections.available
• connections.current
• connections.totalCreated
• mem: bits
• mem: mapped
• mem: mappedWithJournal
• mem: resident
• mem: supported
• mem: virtual
• opLatencies.commands.latency
• opLatencies.commands.ops
• opLatencies.reads.latency
• opLatencies.reads.ops
• opLatencies.writes.latency
• opLatencies.writes.ops
• opcounters.command
• opcounters.delete
• opcounters.getmore
• opcounters.insert
• opcounters.query
• opcounters.update

Install the MongoDB monitoring plugin

To install the MongoDB plugin you have to install the pymongo module pip install pymongo.

After that edit /etc/nixstats.ini. Add the following data.

[mongodb]
enabled=yes
connection_string=mongodb://username:password@127.0.0.1:27017/admin

Test the MongoDB plugin

Run sudo -u nixstats nixstatsagent test mongodb and see if it return any data.

mongodb:
{
    "asserts.msg": 0,
    "asserts.regular": 0,
    "asserts.rollovers": 0,
    "asserts.user": 0,
    "asserts.warning": 0,
    "connections.available": 50743,
    "connections.current": 457,
    "connections.totalCreated": 0,
    "mem": {
        "bits": 64,
        "mapped": 0,
        "mappedWithJournal": 0,
        "resident": 29966,
        "supported": true,
        "virtual": 45514
    },
    "opLatencies.commands.latency": 0,
    "opLatencies.commands.ops": 0,
    "opLatencies.reads.latency": 0,
    "opLatencies.reads.ops": 0,
    "opLatencies.writes.latency": 0,
    "opLatencies.writes.ops": 0,
    "opcounters.command": 0,
    "opcounters.delete": 0,
    "opcounters.getmore": 0,
    "opcounters.insert": 0,
    "opcounters.query": 0,
    "opcounters.update": 0
}

Now restart the nixstats service to start sending data.

service nixstatsagent restart

Create Charts

One the dashboard you can now create a chart with your mongodb metrics. On the Metrics page select mongodb as metric type, then select any of the metrics to create a chart.

Updated on: 09/05/2018