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PrestoDB EMR server refused to connect

I installed EMR in AWS with PrestoDB installed on it, earlier I was able to request with PrestoDB, but somehow after rebooting it stopped working and started to give the following error "Error executing command: server refused connection: http: // ip- * - - - .us-west-2.compute.internal: 8889 / v1 / operator "I looked through all the configuration files, and nothing seems wrong. I also look at the Hive configuration files, but could not succeed. Can anyone who has encountered a similar problem can help me.

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I know this is an old question, but I came across this.

The likely reason is that you only restarted the Presto server on the coordinating node. You must use ssh in each core of the node and restart the Presto server there.

If this is a permanent Presto cluster, you are likely to benefit from installing presto-admin . It's kind of a pain to set up for the first time, but it makes this stuff a lot easier when it's in place.

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Yes, you will have to restart the presto on all machines. Adding to the note, I would like you to mention that you have a chance to install open source presto on EMR using presto admin. It has many features to help you avoid such problems. Cluster upgrade and support easily with presto admin

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Source: https://habr.com/ru/post/1235363/

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