MetaNode Configuration

Configuration Description

Configuration Item	Type	Description	Required
role	string	Process role: MetaNode	Yes
listen	string	Port for listening and accepting requests	Yes
prof	string	Debugging and administrator API interface	Yes
logLevel	string	Log level, default: error	No
metadataDir	string	Directory for storing metadata snapshots	Yes
logDir	string	Directory for storing logs	Yes
raftDir	string	Directory for storing Raft WAL logs	Yes
raftHeartbeatPort	string	Raft heartbeat communication port	Yes
raftReplicaPort	string	Raft data transmission port	Yes
consulAddr	string	Prometheus registration interface	No
exporterPort	string	Port for Prometheus to obtain monitoring data	No
masterAddr	string slice	Address of the master service	Yes
totalMem	string	Maximum available memory. This value must be higher than the value of metaNodeReservedMem in the master configuration, in bytes	Yes
memRatio	string	The ratio of maximum available memory to the total memory of the host. If this option is filled in, the calculated value will override the totalMem item	No
localIP	string	IP address of the local machine. If this option is not specified, the IP address used for communication with the master is used	No
bindIp	bool	Whether to listen for connections only on the localIP, default is false	No
zoneName	string	Specify the zone. By default, it is assigned to the default zone	No
deleteBatchCount	int64	Number of inode nodes to be deleted in batches at one time, default is 500	No
tickInterval	float64	Interval for Raft to check heartbeats and election timeouts, unit is milliseconds, default is 300	No
raftRecvBufSize	int	Size of the Raft receive buffer, unit: bytes, default is 2048	No
nameResolveInterval	int	Interval for Raft node address resolution, unit: minutes, the value should be between [1-60], default is 1	No

Configuration Example

{
     "role": "metanode",
     "listen": "17210",
     "prof": "17220",
     "logLevel": "debug",
     "localIP":"127.0.0.1",
     "metadataDir": "/cfs/metanode/data/meta",
     "logDir": "/cfs/metanode/log",
     "raftDir": "/cfs/metanode/data/raft",
     "raftHeartbeatPort": "17230",
     "raftReplicaPort": "17240",
     "consulAddr": "http://consul.prometheus-cfs.local",
     "exporterPort": 9501,
     "totalMem":  "8589934592",
     "masterAddr": [
         "127.0.0.1:17010",
         "127.0.0.2:17010",
         "127.0.0.3:17010"
     ]
 }

Notes

• The configuration options listen, raftHeartbeatPort, and raftReplicaPort cannot be modified after the program is first configured and started.
• The relevant configuration information is recorded in the constcfg file under the metadataDir directory. If you need to force modification, you need to manually delete the file.
• The above three configuration options are related to the registration information of the MetaNode in the Master. If modified, the Master will not be able to locate the MetaNode information before the modification.

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Master Configuration DataNode Configuration