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Displaying posts with tag: Configuration Variables (reset)
Setting MySQL Configuration Variables – MySQL 5.7 vs MySQL 8.0

MySQL configuration variables are a set of server system variables used to configure the operation and behavior of the server. In this blog post, we will explain the differences in managing the configuration variables between MySQL 5.7 and MySQL 8.0. We will explain three different ways for setting the configuration variables based on your use-case. […]

How to Change Settings for PMM Deployed via Docker

When deployed through Docker Percona Monitoring and Management (PMM) uses environment variables for its configuration

For example, if you want to adjust metrics resolution you can pass


  as  an option to the

docker run


docker run -d \
  -p 80:80 \
  --volumes-from pmm-data \
  --name pmm-server \
  --restart always \

You would think if you want to change the setting for existing installation you can just stop the container with

docker stop

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Encrypt your –defaults-file

Encrypt your credentials using GPG

This blog post will look how to use encryption to secure your database credentials.

In the recent blog post Use MySQL Shell Securely from Bash, there are some good examples of how you might avoid using a ~/.my.cnf – but you still need to put that password down on disk in the script. MySQL 5.6.6 and later introduced the  –login-path option, which is a handy way to store per-connection entries and keep the credentials in an encrypted format. This is a great improvement, but as shown in Get MySQL Passwords in Plain Text from .mylogin.cnf, …

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Amazon RDS with MySQL 5.6 – Configuration Variables

One longstanding complaint I have heard for the past several years, and still hear today, is that Amazon’s Relational Database Service (RDS) does not allow the configuration flexibility as running MySQL in an ec2 instance. While true, this ignores the consistent work that Amazon has done to provide access to the most important configuration variables needed to tune a MySQL instance (after all, how relevant is it for a customer to set bind_address in an RDS instance).

Let’s take a look visually:

MySQL provides 523 options (35 of them NDB specific, so aren’t relevant to RDS), while RDS provides (via the web UI) …

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Showing entries 1 to 4