2.5. Mongod System Configuration File

The next step is to edit the mongod system configuration file on each of the data teir devices by entering the following commands:

user@host:# cd /etc/sysconfig/

user@host:# mv hawk-mongod.rpmsave hawk-mongod

user@host:# vi hawk-mongod

Remove any extra shards from the “CONFIGLIST” line, or add shards, if needed. Verify that the “CONFIGDB” is set, as shown in the following samples:

CONFIGLIST=( "/etc/mongodb.conf-config" "/etc/mongodb.conf-data01" )
ENABLE_MONGOS=1
CONFIGDB="server1:27019,server2:27019,server3:27019"
ENABLE_MONGOS_KEYFILE=1
MONGOS_KEYFILE="/etc/mongo_keyfile-agg"
MONGO_USER=root
MONGO_GROUP=root

CONFIGLIST:

List of mongo services to be ran on the server.

ENABLE_MONGOS:

Set to 1 if server is to be Mongo Aggregation service. Set to 0 if server is not a Mongo Aggregation service.

CONFIGDB:

Enter the three config server hostnames or IP address.

ENABLE_MONGOS_KEYFILE:

Set to 1 to use authentication. Set to 0 to not use authentication.

MONGOS_KEYFILE:

Location to Mongos key file.

MONGO_USER:

System user name to run mongo as. Default: root

MONGO_GROUP:

System group name to run mongo as. Default: root

Then enter the following commands:

user@host:# killall -15 hawk-monitor-mongos

user@host:# killall -15 mongos mongod

user@host:# service hawk-mongod restart

Note

The configuration file must be configured manually on each data tier. This includes Configuration Services, Data Services, and Aggregation Services.