Recently, I encountered a Percona Monitoring and Management (PMM) server that was rapidly approaching complete disk exhaustion. This post outlines the steps taken to identify the issue and reclaim disk…

The post How to Resolve Disk Space Issues in PMM: Case Study first appeared on Change Is Inevitable.

This article will be helpful if you use the Percona Monitoring and Management (PMM) instance and alert notifications, as it is nice to capture the image of the graph when you receive the alert. We will see how to capture and attach the image of the graph when receiving the alert notification (email, telegram, Slack, […]

It’s a common scenario to have a Percona Monitoring and Management (PMM) server running on Kubernetes and also desire to monitor databases that are running outside the Kubernetes cluster. The Ingress NGINX Controller is one of the most popular choices for managing the inbound traffic to K8s. It acts as a reverse proxy and load […]

This blog was originally published in June 2020 and was updated in April 2024. One of the most common support tickets we get at Percona is the infamous “database is running slower” ticket.  While this can be caused by a multitude of factors, it is more often than not caused by a bad or slow […]

This blog was originally published in June of 2023 and updated in April of 2024.As a MySQL database administrator, keeping a close eye on the performance of your MySQL server is crucial to ensure optimal database operations. A monitoring tool like Percona Monitoring and Management (PMM) is a popular choice among open source options for […]

2022 was an exciting year for Percona Monitoring and Management (PMM). We’ve added and improved many features, including Alerting and Backup Management. These updates are designed to keep databases running at peak performance and simplify database operations. But as companies grow and see more demand for their databases, we need to ensure that PMM also remains scalable so you don’t need to worry about its performance while tending to the rest of your environment.

PMM2 uses VictoriaMetrics (VM) as its metrics storage engine. Percona’s co-Founder Peter Zaitsev wrote a detailed post about migration from Prometheus to VictoriaMetrics, One of the most significant differences in …

Earlier in the year, I was working on an issue where one of my clients had reported a massive influx in connection on their hosts after enabling Percona Monitoring and Management (PMM). This was something I had not seen before and after researching for a couple of days I discovered that if you monitor a MySQL instance with PMM configured to collect table statistics, and if the tables that it’s gathering statistics from are Federated, it will generate a connection on the remote host for the Federated tables, one for each Federated table in the instance. Let’s go over the details and provide some examples so we can understand this a bit better.

First, I’ll offer a reminder that a Federated table is simply a table that you can put in your MySQL instance that is empty locally and uses a network connection to get the data from …

In my previous blog post, ProcFS UDF: A Different Approach to Agentless Operating System Observability in Your Database, I wrote about the ProcFS UDF MySQL plugin, which allows you to get operating systems stats, through the MySQL database, without having shell access to the server and any local agent installation.

Some of you wondered whether there is a way to use this goodness in Percona Monitoring and Management (PMM), and this blog post will show you exactly how to do that.

Unfortunately, at this point, Percona Monitoring and Management does not support the ProcFS UDF MySQL plugin out of the box. It is in the backlog, along with many other cool things. However, …

In this blog, I will demonstrate how to use Percona Monitoring and Management (PMM) to find out the reason why the MySQL server is stalling. I will use only one typical situation for the MySQL server stall in this example, but the same dashboards, graphs, and principles will help you in all other cases.

Nobody wants it but database servers may stop handling connections at some point. As a result, the application will slow down and then will stop responding.

It is always better to know about the stall from a monitoring instrument rather than from your own customers.

PMM is a great help in this case. If you look at its graphs and notice that many of them started showing unusual behavior, you need to react. In the case of stalls, you will see that either some activity went to 0 or, otherwise, it increased to high …

Some of you may use MySQL’s asynchronous replication feature called Semisynchronous Replication (aka semi-sync), and now with the MySQL Semi-Sync Summary Dashboard + Percona Monitoring and Management (PMM), you can see the most important metrics! Refer to the Install & Usage steps for deployment details (note you need Replication Set defined!).

What is Semisynchronous Replication

When enabled, Semisynchronous Replication instructs the Primary to wait until at least one replica has received and logged the event to the replica’s local relay log before completing the COMMIT on a transaction. This provides a higher level of data integrity because now it is known that the data exists in two places. This feature ensures a balance …