Mail Agents MUA Mail User Agent – Create new emails, and Read email. Ex.: Thunderbird,Evolution,Outlook,etc.. MTA Mail Transfer Agent – Distribute the emails to other MTAs or Locally. Examples: Postfix MDA Mail Delivery Agent or LDA Local Delivery Agent Handles […]
check_by_ssh
. . check_by_ssh, Problem with Nagios check_by_ssh plugin is that it requires also the nagios-plugins to be installed on the client server. At least part of the nagios-plugins, because in the end all we need is to perform the local […]
How to Setup a DNS server with BIND9
. . How to Setup a DNS server with BIND9. # apt-get install bind9 Configure a master domain: # vim /etc/bind/named.conf zone “provaes.com” { type master; file “/etc/bind/db.provaes.com”; }; Create the master zone file: # vim /etc/bind/db.provaes.com ; register SOA […]
GetMail from command line
. . Getting email from the command line was always something I wanted, also to be able to filter what I get. This great tool is something like fetchmail but better, thanks to Charles Cazabon who wrote this amazing tool […]
Install NRPE in Linux
. . Overview of NRPE: Installing and Configuring Nagios NRPE in Linux: # cd /tmp # wget http://internap.dl.sourceforge.net/sourceforge/nagios/nrpe-2.12.tar.gz # tar -zxvf nrpe-2.12.tar.gz # cd nrpe-2.12 # ./configure –enable-ssl –enable-command-args (should create users/groups) General Options: ————————- NRPE port: 5666 NRPE user: […]
Nagios/Centreon TroubleShooting
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WMI Isn't Working
. . Wmi sometimes do not have the counter it should have.Servers with same configurations miss some wmi class. Strange things can happen with WMI. I have the solution, recreate: 1. Stop the WMI(Windows Management Instrumentation) service 2. Deleter %windir%system32wbemrepository*.* […]