Tag: Systemd

Diagnosing Orchestrator Crashes Due to Time Drift Events

We were recently paged by a client because one node of their Orchestrator setup had crashed. The Orchestrator cluster was set up using the Orchestrator/raft consensus cluster and using a SQLite backend. When looking in the log files this is…

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Orchestrator fails to start after reboot using SystemD

While testing in an orchestrator lab I saw that none of my Orchestrator on-raft nodes were coming online after a reboot. This is the status report from SystemD. $ sudo systemctl status orchestrator * orchestrator.service – orchestrator: MySQL replication management…

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How to manage multiple MySQL binary installations with SYSTEMD

This blog will go into how to manage multiple MySQL binary installations with SYSTEMD using the systemctl command.  With package installations of MySQL using YUM or APT, it’s quick and easy to manage your server’s state by executing systemctl commands…

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HAProxy MySQL lag awareness via systemd

In one of the projects I have been working on, one requirement was the ability to stop traffic from reaching a MySQL host which has been lagging behind its master for longer than a specific amount of time and then…

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