Introduction This post is the continuation of the series of posts for setup a High available NFS server, check the first post to setup the iSCSI storage part: http://opentodo.net/2015/06/high-available-nfs-server-setup-iscsi-multipath/ On this post I’ll explain how to setup the NFS cluster
High available NFS server: Setup iSCSI & multipath
Introduction On this series of post I’ll explain how to setup a high available and redundant NFS cluster using iSCSI with DM-Multipath and Corosync & Pacemaker to manage the cluster and the resources associated. The objective of this scenario it’s create
Varnish – Handling bad responses from backend
Sometimes servers and applications fails, sooner rather than later, that’s because part of our work is to design and continuously planning a robust and highest reliable architecture for our application to ensure his availability most of the time. Depending on
Updates, scripts and other stuff
Hey Guys! This post will be a bit different of the rest, it’s just an update with my last recent works on GitHub and sharing some interesting readings I’ve done. Some time ago since I updated, I uploaded these days
Setup Redis Failover with Redis Sentinel
Recently I’ve been playing with redis, to study as an alternative for memcached for one project. One of my main requirements was to implement a good failover solution for a key-value memory database, actually you’ve many ways to do it
nginx rules to protect wordpress admin
Following my last post about how to ensure a bit more our wordpress instance, today I implemented some basic rules for nginx that can be useful to block some automate brute force attacks to our wordpress administration panel generated by
Script to blacklist bad guys in nginx
There we’ve a small script to generate a list of IP’s to deny in nginx. In that case I use this script to enhance the security of this blog and try to reduce some spam generated from some bots. This
Distributed cron tasks
These last days I was working on a set of Perl scripts to send distributed tasks to different servers using Gearman job server and his API. Basically to do this I used a total of a 3 servers: – 1
Setup Binary replication on PostgreSQL
On this post I’ll explain how to setup a master & slave replication using PostgreSQL 9.1. Well recently I had to work to migrate one database from one server to a new one, so the point of this replication was
Protecting SSH with Two-Factor authentication
Google authenticator is a client to provide multi-factor authentication based on time-based one-time password algorithm TOTP. How you can see it’s very easy to increase a bit more the security in our Linux servers. A verification token has to be