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README
MIT

Mongodb Exporter

MongoDB exporter for prometheus.io, written in go.

screenshot

Grafana Dashboard

Installing

Download a release

Building

Requires glide for dependency management

git clone git@github.com:dcu/mongodb_exporter.git $GOPATH/src/github.com/dcu/mongodb_exporter
cd $GOPATH/src/github.com/dcu/mongodb_exporter
make build
./mongodb_exporter -h

Building Docker image

Build the Docker image

docker build -t mongodb_exporter .

Verify Docker image runs

docker run --rm mongodb_exporter -h

The mongodb url can contain credentials which can be seen by other users on the system when passed in as command line flag. To pass in the mongodb url securely, you can set the MONGODB_URL environment variable instead.

Available groups of data

Name Description
asserts The asserts group reports the number of asserts on the database. While assert errors are typically uncommon, if there are non-zero values for the asserts, you should check the log file for the mongod process for more information. In many cases these errors are trivial, but are worth investigating.
durability The durability group contains data regarding the mongod's journaling-related operations and performance. mongod must be running with journaling for these data to appear in the output of "serverStatus".
background_flushing mongod periodically flushes writes to disk. In the default configuration, this happens every 60 seconds. The background_flushing group contains data regarding these operations. Consider these values if you have concerns about write performance and journaling.
connections The connections groups contains data regarding the current status of incoming connections and availability of the database server. Use these values to assess the current load and capacity requirements of the server.
extra_info The extra_info group holds data collected by the mongod instance about the underlying system. Your system may only report a subset of these fields.
global_lock The global_lock group contains information regarding the database’s current lock state, historical lock status, current operation queue, and the number of active clients.
index_counters The index_counters groupp reports information regarding the state and use of indexes in MongoDB.
network The network group contains data regarding MongoDB’s network use.
op_counters The op_counters group provides an overview of database operations by type and makes it possible to analyze the load on the database in more granular manner. These numbers will grow over time and in response to database use. Analyze these values over time to track database utilization.
op_counters_repl The op_counters_repl group, similar to the op_counters data structure, provides an overview of database replication operations by type and makes it possible to analyze the load on the replica in more granular manner. These values only appear when the current host has replication enabled. These values will differ from the opcounters values because of how MongoDB serializes operations during replication. These numbers will grow over time in response to database use. Analyze these values over time to track database utilization.
memory The memory group holds information regarding the target system architecture of mongod and current memory use
locks The locks group containsdata that provides a granular report on MongoDB database-level lock use
metrics The metrics group holds a number of statistics that reflect the current use and state of a running mongod instance.
cursors The cursors group contains data regarding cursor state and use. This group is disabled by default because it is deprecated in mongodb >= 2.6.
top The top group provides an overview of database operations by type for each database collections and makes it possible to analyze the load on the database in more granular manner. These numbers will grow over time and in response to database use. Analyze these values over time to track database utilization. For more information see the official documentation.

For more information see the official documentation.

Roadmap

The MIT License (MIT) Copyright (c) 2015 David Cuadrado Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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