mod-mongodb-notification-broker

mod-mongodb-notification-broker

This module is used by Broker daemon to relay All Notification Log Broks to a mongoDB database.
This module is mainly used to store Notification infos to do some analysis or make reports later.

Notications

There are two main problems if the database can not be connected and db(update, find) operations can not be accomplished:
if db(update, find) operations can not be accomplished due to mongodb is down or network problems, it will reconnect until db operation succeeds. we store all the Notification broks in a queue, if the queue is full(in case of problem one, we reconnect all the time and do not consume the queued broks.), we just ignore the new inserted broks.

SetUp

Note: Replica set MongoDB instances is the recommended way to work with.

Replica Set

MongoDB Replica Set with three instances

• host1:port1
• host2:port2
• host3:port3
  

MongoDB Replica Set configuration

• with authenticate
• without authenticate

Configuration in mongodb-notification-broker.cfg

module_name mongodb-notification-broker
module_type mongodb_notification_broker
retry_per_log 5
queue_size 20000
high_availability true
replica_set host1:port1, host2:port2, host3:port3
url_options w=1&wtimeoutMS=3000&journal=true&readPreference=secondary&replicaSet=shinken&connectTimeoutMS=3000
database shinken_broker_notification
username shinken_broker_notification
password shinken_broker_notification

Stand alone

MongoDB Stand alone

• host:port

Configuration in mongodb-notification-broker.cfg

module_name mongodb_notification_broker
module_type mongodb_notification_broker
retry_per_log 5
queue_size 20000
high_availability false
stand_alone host:port
url_options w=1&wtimeoutMS=3000&journal=true&readPreference=secondary&replicaSet=shinken&connectTimeoutMS=3000
database shinken_broker_notification
username shinken_broker_notification
password shinken_broker_notification