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SHUNNED status in proxySQL connect to MySQL Cluster

Posted January 16, 2020 610 views
MySQL

I have installed MySQL Cluster that has 6 MySQL Nodes. Client access MySQL Node through ProxySQL. But 2 of 6 MySQL Node in MySQL Cluster has status SHUNNED not ONLINE. I had checked connection from ProxySQL to MySQL Node use “ping” and the result shows the connection is OK. How to fix this status?

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bobbyiliev January 17, 2020

Hello,

That is an interesting question, after some investigation, I think the fact that a server is reported as SHUNNED it just means that during the last check was SHUNNED and no traffic has hit that node yet.

As far as I can see there is an open issue for implementing a mechanism to automatically unshun nodes even if there is no traffic hitting the specific node:

https://github.com/sysown/proxysql/issues/971

Regards,
Bobby

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