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Re: createCluster Fails
Posted by: Benny Ben Ami
Date: June 02, 2021 12:32AM

Eventually, I've found out what is the problem.
I write it here, in case others will face the same issue.

RHEL implements SELinux (Security-Enhanced Linux). Part of its operation is blocking access to ports (in addition to the firewall).
MySQL Group Communication System Module (GCS) requires a range of ports that were blocked by the SELinux.
Running the following command fixed the issue:

semanage port -a -t mysqld_port_t -p tcp 30000-50000

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