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mongotail

v1.0.1

Published

Tail any capped MongoDB collection - like oplog

Downloads

10

Readme

mongotail

CLI to tail any capped MongoDB collection - like oplog

Build status js-standard-style

Installation

npm install mongotail -g

Usage

mongotail [options] [database]

Options:

  • --database <database> or -d <database> - Specifies the database name

  • --collection <collection> or -c <collection> - Specifies the collection to tail. If not specified, the oplog will be tailed

  • --username <username> or -u <username> - Specifies a username to authenticate to the MongoDB instance

  • --password <password> or -p <password> - Specifies a password to authenticate to the MongoDB instance. If provided without a value, you'll be promted to enter a password manually

  • --host <hostname> - Specifies the host where the mongod or mongos is running to connect to as <hostname>. Defaults to localhost

  • --port <port> - Specifies the port where the mongod or mongos instance is listening. Defaults to 27017 which is the default MongoDB port

  • --pretty - Pretty print the output

Just as with the regular mongo client, you can seed mongotail with a MongoDB connection string, e.g:

mongotail myserver/mycollection

You can of cause mix with options:

mongotail myserver/mycollection -u admin -p

Gotcha

If the collection you are tailing is empty, mongotail will not be able to tail it and will exit right away. This is unfortunately a limitation of MongoDB.

Example: Tailing oplog

Given a replica set hosted on example.net with a master on port 10000 and a slave on port 10001, you could tail the oplog like so (given that myuser have permissions to access the oplog):

mongotail example.net:10000,example.net:10001/mydb -u myuser -p

Notice how we do not specify a collection. This will make mongotail fall back to using the special oplog.rs collection.

License

MIT