Data Subsystem

How To Start DataNode

Start a DataNode process by execute the server binary of CFS you built with -c argument and specify configuration file.

nohup cfs-datanode -c datanode.json &

Configurations

Properties

Key	Type	Description	Mandatory
role	string	Role of process and must be set to datanode	Yes
port	string	Port of TCP network to be listen	Yes
localIP	string	IP of network to be choose	No
prof	string	Port of HTTP based prof and api service	Yes
logDir	string	Path for log file storage	Yes
logLevel	string	Level operation for logging. Default is error	No
raftHeartbeat	string	Port of raft heartbeat TCP network to be listen	Yes
raftReplica	string	Port of raft replicate TCP network to be listen	Yes
raftDir	string	Path for raft log file storage	No
consulAddr	string	Addresses of monitor system	No
exporterPort	string	Port for monitor system	No
masterAddr	string slice	Addresses of master server	Yes
rack	string	Identity of rack	No
disks	string slice	PATH:MAX_ERRS:REST_SIZE	Yes

Example:

{
    "role": "datanode",
    "port": "6000",
    "prof": "6001",
    "logDir": "/export/Logs/datanode",
    "logLevel": "debug",
    "raftHeartbeat": "9095",
    "raftReplica": "9096",
    "raftDir": "/export/Logs/datanode/raft",
    "consulAddr": "http://consul.prometheus-cfs.local",
    "exporterPort": 9512,
    "masterAddr": [
        "10.196.30.200:80",
        "10.196.31.141:80",
        "10.196.31.173:80"
    ],
    "rack": "main",
     "disks": [
        "/data0:107374182400",
        "/data1:107374182400"
    ]
}