mongo-watchdog

Starting in Mongo 4.2 the Storage Node Watchdog is available in Community editions of Mongo and therefore this service is no longer necessary and is no longer supported.

MongoDB only supports a disk watchdog in the Enterprise edition. This small binary can be run and will kill the local mongod if it remains unresponsive for a set amount of time. It is based off the process described in SERVER-14139.

Every --update-interval the binary tries to update a document in the local DB and if it fails consecutively for more than --failure-threshold amount of time the mongod process is killed, which should trigger the other secondaries to perform an election.

Installing

You can use go to build and install the binary by running:

go get github.com/levenlabs/mongo-watchdog

You can also download the latest release for your platform.

Usage

./mongo-watchdog [--addr=127.0.0.1:27017] [--socket-timeout=30s] [--update-interval=15s] [--failure-threshold=2m]