Percona announces the release of Percona Monitoring Plugins 1.1.8.

Changelog

• Add MySQL 5.7 support
• Changed a canary check to use timestamp.now() and return a timedelta.seconds
• Remove an additional condition for the Dictionary memory allocated
• Fixed a false-positive problem when the calculated delay was less than 0 and the -m was not set.
• Fixed the problem where slaves would alert due to deadlocks on the master.
• If using pt-heartbeat, get_slave_status was only called when the -s option is set to …

In this blog post, I will discuss the solutions for monitoring databases (which includes alerting) I have worked with and recommended in the past to my clients. This survey will mostly focus on MySQL solutions. 

One of the most common issues I come across when working with clients is monitoring and alerting. Many times, companies will fall into one of these categories:

• No monitoring or alerting. This means they have no idea what’s going on in their environment whatsoever.
• Inadequate monitoring. Maybe people in this camp are using a platform that just tells them the database is up or connections are happening, but there is no insight into what the database is doing.
• Too much monitoring and alerting. Companies in this camp have tons of dashboards filled with graphs, and their inbox is full of alerts that get promptly ignored. This type of monitoring is just as useful as the first option. Alert …

This post is a follow-up to my November 19 webinar, “Tips from the Trenches: A Guide to Preventing Downtime for the Over-Extended DBA,” during which I described some of the most common reasons DBAs experience avoidable downtime. The session was aimed at the “over-stretched DBA,” identified as the MySQL DBA short of time or an engineer of another discipline without the depth of the MySQL system. The over-stretched DBA may be prone to making fundamental mistakes that cause downtime through poor response time, operations that cause blocking on important data or administrative mishaps through the lack of best practice monitoring and alerting. (You can download my slides and view the recorded webinar here.)

Monitor the things
One of the aides to keeping the system up and …

Did your logging stop working after you set up logrotate? Then this post might be for you.

Archive your log files!

Some time ago, Peter Boros wrote about Rotating MySQL Slow Logs safely, explaining the steps of a “best practice” log rotate/archive. This post will add more info about the topic.

When running logrotate for MySQL (after proper setting the /etc/logrotate.d/mysql conf file) from anacron, there’s a situation that you might potentially face if the user and password used to execute the “flush logs” command is stored in, for example, /root/.my.cnf file.

The situation:

You might find out that you have a new MySQL log file ready to receive data, but nothing is being written to it.

Why did this happen?

The logrotate script is executed, but the postrotate …

Percona is glad to announce the release of Percona Monitoring Plugins 1.1.3.

Changelog:

* Introduced more secure location of PHP script configs to harden a Cacti setup
* Addressed CVE-2014-2569

We have introduced a more secure location /etc/cacti/ for PHP script configs. Earlier, the only way was to keep .php.cnf configs inside of scripts/ folder which falls under the web directory of Cacti setup, thus provides a potential security vulnerability. We strongly recommend to move all .php.cnf files from /usr/share/cacti/scripts/ to /etc/cacti/ and also harden your Cacti setup.

A new tarball is available from …

Percona is glad to announce the release of Percona Monitoring Plugins 1.1.2.

Changelog:

* Added Nagios plugin and Cacti template for Amazon RDS
* Added Nagios config template to the documentation
* Added an option to pmp-check-pt-table-checksum to check MAX(ts) of latest checksum
* Added generic Nagios plugin for PT tables
* Extended pmp-check-mysql-processlist with max user connections check
* Zabbix MySQL.running-slave item failed with MySQL 5.6 (bug 1272358)
* ss_get_mysql_stats and MariaDB does not use have_response_time_distribution (bug 1285888)
* Cacti Monitoring plugins and SNMP via TCP (bug 1268552)

Shortly about the new features.

Amazon RDS support in Nagios and Cacti.
We have created the Nagios plugin and Cacti template to give you a chance to add …

Percona announces the release of Percona Monitoring Plugins 1.1.1 to address the critical bug that appears after the 1.1 upgrade.

Changelog:

* Cacti mysql graphs stop working with data input field “server-id” after 1.1 upgrade (bug 1264814)
* Non-integer poller errors for MySQL Query Response Time (bug 1264353)

A new tarball is available from downloads area or RPM and DEB packages from our software repositories. The plugins are fully supported for customers with a Percona Support contract and free installation services are provided as part of some contracts. In addition as part of …

Percona is glad to announce the release of Percona Monitoring Plugins 1.1. The components are designed to integrate seamlessly with widely deployed solutions such as Nagios, Cacti and Zabbix, and are delivered in the form of templates, plugins, and scripts.

In this release we have added MySQL template for Zabbix 2.0.x adopted from the existing Cacti one.

Changelog:

* Added MySQL template for Zabbix 2.0.x (first release)
* Added FreeBSD support to Nagios plugins, partially rewritten pmp-check-unix-memory (bugs 1249575, 1244081)
* Added new options to ss_get_mysql_stats.php to better support pt-heartbeat (bugs 1253125, 1253130)
* ss_get_mysql_stats.php script was opening multiple connections to the server …

The Percona Monitoring Plugins (PMP) provide some free tools to make it easier to monitor PXC/Galera nodes.  Monitoring broadly falls into two categories: alerting and historical graphing, and the plugins support Nagios and Cacti, respectively, for those purposes.

Graphing

An update to the PMP this summer (thanks to our Remote DBA team for supporting this!) added a Galera-specific host template that includes a variety of Galera-related stats, including:

• Replication …

Percona is glad to announce the release of Percona Monitoring Plugins 1.0.5 for MySQL. The components are designed to integrate seamlessly with widely deployed solutions such as Nagios and Cacti, and are delivered in the form of templates, plugins, and scripts.

Changelog:

* Added mysql-ca option to ss_get_mysql_stats.php (bug 1213857)
* Added user info to the idle_blocker_duration check of pmp-check-mysql-innodb (bug 1215317)
* Extended pmp-check-mysql-processlist with more locking states (bug 1213859)
* ss_get_mysql_stats.php did not work with custom mysql port (bug 1213862)
* ss_get_mysql_stats.php silently failed when a query returns too many rows (bug 1225070)
* Wrong description of percona-cacti-templates deb package (bug 1217782)

A new tarball is available from …