yb-master
Attention
This page documents an earlier version. Go to the latest (v2.3) version.yb-master, located in the bin directory of Yugabyte home, is the YB-Master binary.
Example
$ ./bin/yb-master \
--master_addresses 172.151.17.130:7100,172.151.17.220:7100,172.151.17.140:7100 \
--rpc_bind_addresses 172.151.17.130 \
--fs_data_dirs "/home/centos/disk1,/home/centos/disk2" \
--replication_factor=3 &
Help
Use the --help option to see all the commands supported.
$ ./bin/yb-master --help
Config flags
| Flag | Mandatory | Default | Description |
|---|---|---|---|
--master_addresses |
Y | N/A | Comma-separated list of all the RPC addresses for yb-master consensus-configuration. |
--fs_data_dirs |
Y | N/A | Comma-separated list of directories where the yb-master will place all it's yb-data/master data directory. |
--fs_wal_dirs |
N | Same value as --fs_data_dirs |
The directory where the yb-master will place its write-ahead logs. May be the same as one of the directories listed in --fs_data_dirs, but not a sub-directory of a data directory. |
--log_dir |
N | Same value as --fs_data_dirs |
The directory to store yb-master log files. |
--max_clock_skew_usec |
N | 50000 (50ms) | The expected maximum clock skew between any two nodes in your deployment. |
--rpc_bind_addresses |
Y | 0.0.0.0:7100 |
Comma-separated list of addresses to bind to for RPC connections. |
--server_broadcast_addresses |
N | 0.0.0.0:7100 |
Public IP or DNS hostname of the server (along with an optional port). |
--use_private_ip |
N | never |
Determines when to use private IP addresses. Possible values are never,zone,cloud and region. Based on the values of the placement_* config flags listed in this table. |
--webserver_interface |
N | 0.0.0.0 |
Address to bind for server UI access. |
--webserver_port |
N | 7000 |
Monitoring web server port. |
--webserver_doc_root |
N | The www directory in the YugabyteDB home directory |
Monitoring web server home. |
--replication_factor |
N | 3 |
Number of replicas to store for each tablet in the universe. |
--placement_zone |
N | rack1 |
Name of the availability zone or rack where this instance is deployed. |
--placement_region |
N | datacenter1 |
Name of the region or datacenter where this instance is deployed. |
--placement_cloud |
N | cloud1 |
Name of the cloud where this instance is deployed. |
--logtostderr |
N | N/A | Log to standard error. |
--flagfile |
N | N/A | Load flags from the specified file. |
--version |
N | N/A | Show version and build info. |
--yb_num_shards_per_tserver |
N | -1 | The number of shards per yb-tserver per table when a user table is created. Server automatically picks a valid default internally. |
Admin UI
The Admin UI for yb-master is available at http://localhost:7000.
Home
Home page of the yb-master that gives a high level overview of the cluster. Note all yb-masters in a cluster show exactly the same information.
Tables
List of tables present in the cluster.
Tablet servers
List of all nodes (aka yb-tservers) present in the cluster.
Debug
List of all utilities available to debug the performance of the cluster.
Default ports reference
The various default ports are listed below.
| Service | Type | Port |
|---|---|---|
yb-master |
rpc | 7100 |
yb-master |
admin web server | 7000 |