Runbook

MySQL Service Unreachable on Node.

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Overview

This incident type refers to a situation where the node on which the MySQL service is running becomes unreachable. The incident occurs when the MySQL service cannot be found on the network, making it impossible for users to access it. This can happen due to a variety of reasons, including network connectivity issues, server downtime, or misconfiguration. It can greatly affect the performance of applications that rely on the MySQL service, leading to disruption of operations and loss of productivity.

Parameters

Debug

Check if the node is up and running

Check if the MySQL service is running on the node

Check if the MySQL service is listening on the correct port

Check if the MySQL service is bound to the correct IP address

Check if the MySQL service is configured to allow remote connections

Check if the MySQL service is accessible from another node on the network

Check if there are any firewall rules blocking the MySQL service

Check if there are any network connectivity issues between the nodes

Repair

Try to start mysql service if not already

Verify configuration settings: Ensure that the MySQL service is configured correctly on the node. Check the configuration files to ensure that the correct settings are in place.

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