Linux

MySQL replication fails with WSREP error after restart

Scenario A single Percona MySQL 5.7 server replicates asynchronously with a cluster of Percona MySQL 5.7 servers. After rebooting the single server, replication failed with the following symptoms: mysql> show slave status \G**************************** 1. row ************** Slave_IO_State: Waiting to reconnect after a failed registration on master Master_Host: my-replication-partner Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: …

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Updating to WordPress 5 on a Linux Host: Requesting FTP Credentials

WordPress 5 didn’t install automatically on sites hosted on my CentOS 7 WordPress hosting server. That’s by design, because I’m selfish and I’d rather wait for a few bug-fix releases before making a major upgrade. When I chose to upgrade manually on a test site, WordPress asked for my FTP credentials: If you’re hosting WordPress …

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New Relic APM on Fedora/CentOS/RedHat with SELinux Enforcing: Solved

I found the solution for getting the New Relic APM Agent to run on a CentOS 7 system with SELinux Enforcing. The only SELinux modification you have to make is to change the context of the log file directory /var/log/newrelic. You can temporarily make these changes with the chcon command: Kill any running instances of …

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