There are numerous configuration flags, gFlags in YugabyteDB, which allow you to fine tune the core database services yb-master and yb-tserver. Several examples include use_node_to_node_encryption, yb_num_shards_per_tserver and client_read_write_timeout_ms.
To quickly view a value of a particular gFlags, you can curl the Master (Port 7000) and T-Server (Port 9000) UIs, then grep the name of the gFlag.
- Master: http://master-ip-address:7000/varz
T-Server: http://t-server-ip-address:9000/varz
Example:
[root@localhost ~]# curl -s http://master-ip-address:7000/varz | grep -i "\-\-client_read_write_timeout_ms"
--client_read_write_timeout_ms=60000
[root@localhost ~]# curl -s http://t-server-ip-address:9000/varz | grep -i "\-\-client_read_write_timeout_ms"
--client_read_write_timeout_ms=60000
Update:
Starting in YugabyteDB 2.15, the above curl commands will return data as HTML.
You can revert back to raw data and search for a paricular gFlag using the ?raw parameter in the URL.
[root@localhost ~]# curl -s http://master-ip-address:7000/varz?raw | grep "\-\-client_read_write_timeout_ms"
--client_read_write_timeout_ms=60000
[root@localhost ~]# curl -s http://t-server-ip-address:9000/varz?raw | grep "\-\-client_read_write_timeout_ms"
--client_read_write_timeout_ms=60000
Have Fun!