Severalnines Support
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By the way, you can easily add HA Proxy to your MySQL Cluster or Galera deployment using these scripts: https://github.com/severalnines/haproxy
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Hi Shantanu, If this is still an issue, can you send the error logs from the data nodes? You will find them in the datadir of the data nodes. Thanks. Vinay
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Hi Shantanu, Latency on single queries will always be higher in NDB, since it is a distributed database and the request goes through the SQL and Data Nodes. The network hop adds to the latency. How...
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Hi Laurent, Yes, you are correct. Therefore, in your case, the best option would be to shutdown ClusterControl when doing manual maintenance. I hope it is not a major inconvenience. Best regards, ...
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Hello Laurent, ClusterControl must be shutdown when doing manual maintenance. This instruction is printed now in the web interface. The reason is that ClusterControl cannot know if you shut down th...
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Hi again, As from ClusterControl v1.1.32, it is now possible to disable Galera autorecovery in ClusterControl. Please use the configuration parameter in cmon.cnf: enable_autorecovery=1 (default ...
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Hi George, This is an old/deprecated comment that refers to an older version. An oversight from our part, thanks for the heads up. Best regards, Vinay
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Hi Shantanu, This has been fixed, and the Cluster Configurator has been updated. Thanks for reporting this. Best regards, Vinay
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Hi Shantanu, You can have your SQL nodes behind a loadbalancer, and your apps can connect via the loadbalancer. If you want to use HA Proxy, you might want to check out: https://github.com/severaln...
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Hi Shantanu, In case this is still an issue, please attach the: - config.ini- ndb_X_error.log- ndb_X_trace.log*- ndb_1_cluster.log Thanks. Vinay