YEDIS API connection issues
To troubleshoot YEDIS API connection issues, you should perform a number of checks.
Are YugabyteDB processes running?
You should ensure that the expected YugabyteDB processes are on the current node. At a minimum, the YB-TServer process needs to be running to be able to connect to this node with a Redis client or application.
Additionally, depending on the setup, you might expect a master process to also be running on this node.
For detailed instructions, see Check processes.
Is the Redis-compatible YEDIS API running?
If the YB-TServer process is running, execute the following command to verify that the YEDIS API is enabled and listening on the Redis port (default
lsof -i :6379
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME yb-tserve 81590 centos 92u IPv4 0xdeadbeef 0t0 TCP localhost:6379 (LISTEN)
You may need to install
When running a local cluster with
yb-ctl, you should see all the nodes with different IP addresses, as per the following example:
lsof -i :6379
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME yb-tserve 81590 centos 92u IPv4 0xdeadbeef 0t0 TCP localhost:6379 (LISTEN) yb-tserve 81593 centos 92u IPv4 0xdeadbeef 0t0 TCP 127.0.0.2:6379 (LISTEN) yb-tserve 81596 centos 92u IPv4 0xdeadbeef 0t0 TCP 127.0.0.3:6379 (LISTEN)
If another process is using this port, you might need to stop that and restart the YB-TServer process. Otherwise, if no process is listening but the YB-TServer is running, check the value of the
--cql_proxy_bind_address flag passed to the YB-TServer process.
Can redis-cli connect locally?
redis-cli to connect to the local node, as follows:
./redis-cli -h <yb-local-address>
Depending on your configuration, you may need to install
redis-cli. For more information, see Initialize YEDIS API and connect with redis-cli.
In the preceding command,
<yb-local-address> is the address where the YEDIS service is listening (for example, as returned by
redis-cli can connect, the issue is likely a network issue with the original client not being able to access this node where YugabyteDB is running.
Otherwise, you might need to use the the
yb-admin tool to run the following command:
.bin/yb-admin --master_addresses <master-ip-addresses> setup_redis_table