jtheo » nagios

Bookmarks for 9 dic 2011 through 13 dic 2011

jtheo — Tue, 13 Dec 2011 20:00:25 +0000

These are my links for 9 dic 2011 through 13 dic 2011:

BAT file tips | Alex @ Net – Let's play with BAT files a little. As you may know, BAT files are intended to be run and processed by the MS command processor, named cmd.exe, and the programming language they are created with is very close to BASIC. The early versions of the BAT-files language (which comes from famous Windows ancestor, MS-DOS) were very limited. Nowadays it has more features and a few days ago I created a small collection of interesting tricks, related to BAT file programming. You can check the following examples that demonstrate which execution flow controlling statements BAT-file language has and show their analogs in PHP.
10 Tools To Add Some Spice To Your UNIX Shell Scripts – here are some misconceptions that shell scripts are only for a CLI environment. You can easily use various tools to write GUI and/or network (socket) scripts under KDE or Gnome desktops. Shell scripts can make use of some of the GUI widget (menus, warning boxs, progress bars etc). You can always control the final output, cursor position on screen, various output effects, and so on. With the following tools you can build powerful, interactive, user friendly UNIX / Linux bash shell scripts.
Nagios plugin for ASE – SybaseWiki – When you are using Nagios (http://www.nagios.org) as a monitoring tool, it's real easy to implement your own checks for Sybase servers. Here's a sample check to see if your ASE server is up and connectable.

Bookmarks for 23 nov 2011 through 30 nov 2011

jtheo — Wed, 30 Nov 2011 18:01:39 +0000

These are my links for 23 nov 2011 through 30 nov 2011:

BILL – Bill strives to be a solution for developing applications which can be run on platforms with limited resources (e.g. embedded systems) on top of the GNU Bash shell, with a focus on quality and reusability of shell code.
Check_whois – Use this plugin with Nagios to be notified when a domain is about to expire.
TIP: Debug squid ACL matches – The FreeBSD Forums – For tricky squid ACL troubleshooting situations, it is helpful to be able to see which access control entries a request matches and does not match. This information can be discovered easily using squid's debugging facility.

Bookmarks for 7 nov 2011 through 8 nov 2011

jtheo — Tue, 08 Nov 2011 00:01:01 +0000

These are my links for 7 nov 2011 through 8 nov 2011:

Testing puppet with Jenkins before deploying | mig5.net – [...] However, I had overlooked one element: I tend to make a lot of typos [...]
funny and very instructive
VMware Monitoring Appliance with Nagios, NagVis, PNP4Nagios, Smokeping, Cacti and OpenNMS – Monitoring in just a few minutes! This VMware appliance based on Ubuntu Server Edition 10.10 64-bit contains the most important monitoring software packages, installed and ready-to-run:
Nagios 3.2.3
NagVis 1.5.5
PNP4Nagios 0.6.7
MK Livestatus 1.1.8
Cacti/Spine 0.8.7g
Smokeping 2.3.6
OpenNMS 1.8.5

You can start immediately. It is especially suitable for comparing these different monitoring solutions. Note that OpenNMS is written in Java and produces a high load on the system. Starting and Stopping OpenNMS takes a long time (several minutes!).
Squid Block – DNSBL Redirector for the Squid Proxy – dnsbl_redir is a shamelessly derived redirector based on the asqredir redirector written by Thomas Zippo < thomas at zippo dot ch >. Thanks!
Its been rewritten to use a DNSBL list (RHS type) to check for and block sites listed in the DNSBL. It will redirect your users to the page/site listed in the top of the dnsbl_redir.h file.

dnsbl_redir is written in C. It consists of one small source file and a small(er) .h file. It has been tested and runs on the current Squid versions. It performs very well on Linux (RedHat/Fedora), BSD and technically should compile and run on any gnu/linux.

Bookmarks for 12 set 2011 from 09:56 to 16:34

jtheo — Mon, 12 Sep 2011 15:00:31 +0000

These are my links for 12 set 2011 from 09:56 to 16:34:

Command Line Hack for: "Terminal Server Has Exceeded the Maximum Number of Allowed Connections" – How-To Geek – If you’ve worked on a network with Windows servers, you’ve encountered this error message at least 37,000 times:

“The terminal server has exceeded the maximum number of allowed connections. The system can not log you on. The system has reached its licensed logon limit. Please try again later.”[...]
check_rbl – nagios_plugins – check_rbl is a Nagios plugin to check if an SMTP server is blacklisted
TinyApps.Org Blog : Remotely enable Remote Desktop under Windows XP –

Bookmarks for 28 ago 2011 from 10:48 to 11:35

jtheo — Sun, 28 Aug 2011 11:03:56 +0000

These are my links for 28 ago 2011 from 10:48 to 11:35:

SourceForge.net: Integrating iTop with Nagios – itop – This page explains how to integrate iTop and Nagios. Through this integration:

Nagios alarms are turned into Incident tickets in iTop

The details of the Nagios status for a device is visible directly within iTop (as an extra tab on the object)
itop – ITSM & CMDB OpenSource | Download itop – ITSM & CMDB OpenSource software for free at SourceForge.net – IT Operations Portal: a complete open source, ITIL, web based service management tool including a fully customizable CMDB, a helpdesk system and a document management tool. iTop also offers mass import tools and web services to integrate with your IT
Scanning for new LUNs on Linux servers – [...] If your servers are connected to a Fibre channel or iSCSI SAN, you probably need to periodically poke your systems to see new storage that is made available to them [...]

Bookmarks for 26 apr 2011 from 02:00 to 14:52

jtheo — Tue, 26 Apr 2011 13:01:36 +0000

These are my links for 26 apr 2011 from 02:00 to 14:52:

Putty, Active Directory and Kerberos – [...] This is a short and simple tutorial about setting up Kerberos authentication with putty and Active Directory. [...]
Checkpoint HA Nagios monitoring – [...] For a number of reasons I need to be able to know which firewall is the active on in a Checkpoint cluster. I’d like to be notified when the active node switches to the secondary box [...]
Michele’s blog " Active Directory and Apache Kerberos … – [...] In this article I’ll explore how to set up an Apache web server on a Linux Debian box (squeeze testing as of 05/2009) with kerberos authentication integrated with Active Directory on Windows 2003R2 [...]
Integrating Active Directory and Squid3 – [...] Here’s my third and probably last post on a topic about AD integration and linux. This time around the goal is to have Kerberos authentication integrated with Squid, so that users do not have to be prompted for additional authentication when surfing the web[...]
500 Internal Server Error – 500 Internal Server Error

Bookmarks for 23 feb 2011 through 28 feb 2011

jtheo — Mon, 28 Feb 2011 16:00:47 +0000

These are my links for 23 feb 2011 through 28 feb 2011:

Openfiler 2.3 Active/Passive Cluster (heartbeat,DRBD) With … – [...] Openfiler is a Linux based NAS/SAN application which can deliver storage over nfs/smb/iscsi and ftp. It has a web interface over that you can control these services. The howto is based on the Howto from Kyle Gililland. A lot of thanks to him for this.

The cluster we build will consist of two nodes replicating each other and taking over services and storage in case of emergency. Furthermore we have an Offsite Replication Server, which ideally stands in a physically different position and replicates the configurations/storage from which ever node is active. In case of emergency this Offsite Replication Server can be used to restore the cluster and to deliver the services [...]
Using m4 with Nagios: Advanced Ideas – Nagios configuration has been traditionally cumbersome and extensive; there are a lot of things to configure. The addition of templating some time ago helped, but not entirely. A configuration element such as a server or a switch can take up a huge amount of configuration and be quite repetitive, too.Using m4 can alleviate all of these problems. When combined with GNU Make and Nagios configuration directories, changing the configuration can be done quite simply and easily.
Random.org – RANDOM.ORG offers true random numbers to anyone on the Internet. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs. People use RANDOM.ORG for holding drawings, lotteries and sweepstakes, to drive games and gambling sites, for scientific applications and for art and music. The service has existed since 1998 and was built and is being operated by Mads Haahr of the School of Computer Science and Statistics at Trinity College, Dublin in Ireland.

[ via http://schiseta.com ]

Bookmarks for 2 dic 2010 through 14 dic 2010

jtheo — Tue, 14 Dec 2010 17:01:25 +0000

These are my links for 2 dic 2010 through 14 dic 2010:

TSMmonitor – This script is developed to provide an easy, customizable and effective way to monitor TSM (Tivoli Storage Manager) Servers.

It is composed of functions to check specific TSM resources. Each check returns the resource status. The available status for a resource are:

Ok / Warning / CriticalThe status returned is based on defined thresholds for each check
How to: Ubuntu PHP Remove Suhosin – [...] One of my projects for the "holidays" is moving one of my servers from Gentoo to Ubuntu. During planning for this, I noticed that the Ubuntu version of PHP5 includes Suhosin. That's a problem.

The problem with Suhosin is that it's designed to stop sloppy applications from doing bad things. I'm sure it does a reasonable job of that, but in the process it can interfere with good applications (see examples for Joomla). Since I'm in the business of writing good applications, Suhosin is a bad idea. Worse yet, it can provide a false sense of security, since it can't deal with anything except typical PHP errors. As far as I'm concerned, this class of "security blanket" provides false comfort and is no replacement for auditing and testing.

[...]
Jean Baptiste FAVRE – Publications – Appunti e documentazione su linux, xen, DRBD, pacemaker in francese

Gli articoli su nodi xen in cluster e migrazione da xen 3.2 a 4 sono tradotti anche in inglese
140 Google Interview Questions | Seattle Interview Coach – Here's a list of 140 Google interview questions. Many of our clients have interviewed and received Google job offers.

Bookmarks for 26 gen 2010 through 30 gen 2010

jtheo — Sat, 30 Jan 2010 01:03:52 +0000

These are my links for 26 gen 2010 through 30 gen 2010:

Network monitoring with Nagios and OpenBSD – Una guida in italiano all'installazione configurazione di nagios sotto BSD
UNIX Performance Management – The purpose of this paper is to introduce the performance analyst to some of the free tools available to monitor and manage performance on UNIX systems, and to provide a guideline on how to diagnose and fix performance problems in that environment. The paper is based on the author’s experiences with AIX and will cover many of the tools available on that and other UNIX platforms. It will also provide some Rules of Thumb for analyzing the performance of UNIX systems. The paper has been updated to include some of the things that can be done in order to make sure that the web server will perform well.
UNIX BASH scripting: Replace values in XML using sed and awk – [...]Even though sed or awk is not suggested to work with XMLs (generally a programing language like Perl or Python is more preferred), there can be simple cases where we can make use of sed or awk to perform certain search and replace in simple XML s. Here is an simple example[...]
che fico

Bookmarks for 6 gen 2010 through 8 gen 2010

jtheo — Thu, 07 Jan 2010 23:01:02 +0000

These are my links for 6 gen 2010 through 8 gen 2010:

Tools – Mt Xia – Downloads,Business Continuity,Disaster Recovery,High Availability,Virtualization,Data Center Automation,Audit Response,Audit Compliance,Security Assessment,Technical Support
pWare – AIX Open Source software for IBM AIX 5.3 and 6.1 – AIX Open Source software for IBM System p server (formerly pSeries and RS/6000) machines running AIX 5.3 and higher. My name is Bill Jojo and I work at Hudson Valley Community College where we use a significant amount of Open Source software to manage our environment.
Create AIX NIM master – NIM is better in that you can install a new OS from a mksysb in as little as 5 minutes versus installing from CD which can take 40 minutes or longer. You can also keep your builds consistent if you have one mksysb image to build an AIX server. This also makes server builds easier at remote locations, no more swapping CD’s[...]
AixErrorLogCustomization < AIS < TWiki – AIX has a very flexible error logging daemon to log hardware and software errors. The log is typically accessed with the errpt command.
Unfortunately, checking the log is a manual process. Using some custom ODM entries, we can cause AIX to run commands in response to errors, which can then be used for notification.
Below I document a simple configuration which uses the ODM to log each error entry to syslog, and forward the complete entry via email.
c99madshell Security Review – Derek Fountain – A friend of mine got hacked recently. Some charming person managed to upload a rogue file to his server and replaced some of the software executables he produces with versions containing trojans and viruses.
It seems there's not a lot of information available that describes just what is possible from an uploaded file vulnerability. So I grabbed a copy of 'c99madshell', which is one of the more popular scripts used by script kiddies, and had a look at what it can do. Here's what I found…