Checkpoint – Database Revision Control
“Database Revision Control” is a really useful feature when you are going to make important and/or many changes in the firewall policy, objects…
To
Icinga – How to configure passive checks made easy (2)
In the previous post I explained what is the difference between Icinga active and passive checks, why can be interesting to use passive checks, what
Icinga - How to configure passive checks made easy (1)
As I posted long time ago for Nagios (Nagios – Using passive checks without agent), it is time to show an easy way to configure Icinga
Windows - Configure scheduled task every minute
This time a simple as well as important post. Have you tried to run a scheduled task every minute?
When editing the trigger of a
HW - Install SSD in laptop and replace DVD
In a previous post I showed how to upgrade your laptop HDD (Hard Disk Drive) to an SSD (Solid State Drive) to boost up performance.
HW - Upgrade laptop with an SSD drive
One of the biggest bottlenecks regarding the performance of a laptop is disk access. Therefore, installing an SSD (Solid State Drive) is a fantastic way
Windows - VMware machines offline due to Microsoft patches
Today, just when starting the working day we have realized that there were somes servers offline (still powered on but without network connection). It seemed
F5 BIGIP - Upgrade an active/standby cluster
Step by step procedure to upgrade an active/standby BIGIP cluster. In this example, I needed to upgrade from BIG IP v13.0.0.0
F5 BIGIP - LTM Policy GUI incorrectly shows conditions with datagroups
The last F5 BIGIP version 13.1.0.2 (I upgraded from v13.0.0 some days ago – 2018 February) seems to generate a bug
F5 BIGIP - HTTP header count exceeded maximum allowed count
Last week we published a new application on our web servers (which are balanced by the F5 BIGIP)
Accessing directly to the servers produced no
Security - Create self signed SAN certificate with OpenSSL
This post explains how to generate self signed certificates with SAN – Subject Alternative Names using openssl. It is a common but not very funny task,
Icinga - Cannot login to Grafana. Forgot admin password
It is not the first time my Icinga suddenlty, stops showing the grafana graphs.
Problem
If trying to log to Grafana, admin password is not
Icinga2 - Understanding checks and notification types
Here I am trying to present (I hope in an easy way to understand) some Icinga concepts (maybe also applicable in Nagios) like active and
Checkpoint - GAIA commands to check backup status and logs
I have configured my VSX appliances to perfom scheduled backups every week. Today, my icinga monitoring system has raised an alert informing that VSX2 backup
Linux - Exim: Authenticated and TLS mail through smarthost
Exim is a very flexible and common MTA (mail transfer agent) in Unix systems.
This posts shows the way to configure Exim as client to