Great Speakers, Fun, and Insights at Percona Live MySQL Conference

The Percona Live MySQL Conference 2014 is less than two weeks away, running April 1-4, and excitement is building for the great lineup of speakers, events, and networking opportunities it offers. This year’s conference also features the first-ever CentOS Dojo Santa Clara and interview, Jeremy Cole, Google senior systems engineer and a presenter at […]

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Hardening your Cacti setup

If you are using Percona Monitoring Plugins for Cacti, this article should be important to you.
By default, the Cacti setup is closed from accessing from Web. Here is an excerpt from /etc/httpd/conf.d/cacti.conf:

Shell

# httpd 2.4
Require host localhost

# httpd 2.2
Order deny,allow
Deny from all
Allow from localhost

1234567

# httpd 2.4 Require host localhost  # httpd 2.2 Order deny,allow Deny from all Allow from localhost

In […]

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My Favorite MongoDB Replication Feature: Crash Safety

At an extremely high level, replication in MongoDB and MySQL are similar. Both databases have exactly one machine, the primary (or master), that accepts writes from clients. With a single transaction (or atomic operation, in MongoDB’s case), the tables and oplog (or binary log in MySQL) are modified to reflect the change. The log […]

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