Internet - divulga disponibilidade de sites - (avaliar, acho que precisa melhorar)

http://downdetector.com.br/

Read More

Zabbix - How To Install Zabbix Server 3.4.4 Into Ubuntu 17.04

Zabbix is an open source network monitoring tools. Now release Zabbix Server 3.4.4 for installation process on Ubuntu 17.04. I have install Zabbix Server 3.4.4 into ubuntu 17.04.

⇒ Install Zabbix server on ubuntu 16.04.

⇒ Send Mail Notification From Zabbix Server Using Gmail

⇒ How To Add Windows Host In Zabbix Server

⇒ Install Zabbix Agent Into Windows

⇒ How to Install And Configure Zabbix Agent on Ubuntu

⇒ Monitor mysql Service In My Zabbix Server.

Step #01: Your server must update and upgrade

root@Zabbix-Server:~# apt-get update 

Successfully completed update then run upgrade command.

root@Zabbix-Server:~#  apt-get upgrade

Then reboot your machine command reboot with root user or using sudo.

Step #02: Now install apache web server

root@Zabbix-Server:~# apt-get install apache2

Step #03: When completed install apache server then install mysql database server.

root@Zabbix-Server:~# apt-get install mysql-server

Mysql server setup then type password two times.

Step #04: Zabbix update version install many php. Copy all code in one line then run it.

root@Zabbix-Server:~# apt-get install php php7.0-cli php7.0-common php7.0-mysql php7.0-mysql php7.0-curl php7.0-json php7.0-cgi php7.0 libapache2-mod-php

Start your apache server command line

root@Zabbix-Server:~# service apache2 start

Step #05: Download Zabbix update deb file using wget command.

root@Zabbix-Server:~# wget http://repo.zabbix.com/zabbix/3.4/ubuntu/pool/main/z/zabbix-release/zabbix-release_3.4-1+xenial_all.deb

Then follow below command for install deb file.

root@Zabbix-Server:~# dpkg -i zabbix-release_3.4-1+xenial_all.deb

Run update command

root@Zabbix-Server:~# apt-get update

Step #06: Install Zabbix mysql and Zabbix frontend-php

root@Zabbix-Server:~# apt-get install zabbix-server-mysql zabbix-frontend-php

Step #06: Create Zabbix mysq database. Goto mysql -u root -p

mysql> create database zabbix character set utf8 collate utf8_bin;
Query OK, 1 row affected (0.00 sec)
mysql> grant all privileges on zabbix.* to zabbix@localhost identified by 'passw0rd';
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> cd database/mysql
     mysql -uzabbix -ppassw0rd zabbix < schema.sql 
     mysql -uzabbix -ppassw0rd zabbix < images.sql 
     mysql -uzabbix -ppassw0rd zabbix < data.sql 
 \q

Step #07: Create  Zabbix mysql table

root@Zabbix-Server:~# cd /usr/share/doc/zabbix-server-mysql/

Using below command for create zabbix database table

root@Zabbix-Server:~# zcat create.sql.gz | mysql -uroot zabbix -p

Step #08: Ensure Zabbix Server conf file inserted below lines such as

root@Zabbix-Server:~# vi /etc/zabbix/zabbix_server.conf

Insert all lines into server conf file.

DBHost=localhost
DBName=zabbix
DBUser=zabbix
DBPassword=passw0rd

Step #09: Edit your Server local time zone where Server located.  When your server Newyork then type America/New_York into php.ini file. Line number 924

root@Zabbix-Server:~# vi /etc/php/7.0/apache2/php.ini 

Example below.

date.timezone ="America/New_York"

Now apache and Zabbix server start all is ok. Going to your browser and type your Zabbix Server IP address and press Enter.

root@Zabbix-Server:~#  service apache2 restart

If you see does’t start Zabbix Server so now start command below.

root@Zabbix-Server:~#  service zabbix-server start

Now goto your browser type Zabbix server IP address as like below.

http://Zabbix-Server-IP/zabbix/

Then complete installation process now login here.

User Name : Admin

Password   : zabbix

See video

fonte: http://technologyrss.com/install-zabbix-server-3-4-4-ubuntu-17-04/

Read More

Monitoramento - iperf publico

.\iperf3.exe -c iperf.volia.net -u -b 940M -O2
Connecting to host iperf.volia.net, port 5201
[  4] local *.*.*.* port 64288 connected to 82.144.193.18 port 5201
[ ID] Interval           Transfer     Bandwidth       Total Datagrams
[  4]   0.00-1.00   sec   101 MBytes   846 Mbits/sec  12910  (omitted)
[  4]   1.00-1.00   sec   113 MBytes   473 Mbits/sec  28876
[  4]   1.00-2.00   sec   113 MBytes   946 Mbits/sec  14437
[  4]   2.00-3.00   sec   113 MBytes   946 Mbits/sec  14437
[  4]   3.00-4.00   sec   113 MBytes   946 Mbits/sec  14438
[  4]   4.00-5.00   sec   113 MBytes   946 Mbits/sec  14437
[  4]   5.00-6.00   sec   113 MBytes   946 Mbits/sec  14437
[  4]   6.00-7.00   sec   113 MBytes   946 Mbits/sec  14438

Read More

Librenms - Movendo a instalação para outro servidor

How do I move my LibreNMS install to another server?

If you are moving from one CPU architecture to another then you will need to dump the rrd files and re-create them. If you are in
this scenario then you can use Dan Brown's migration scripts.
If you are just moving to another server with the same CPU architecture then the following steps should be all that's needed:

- Install LibreNMS as per our normal documentation, you don't need to run through the web installer or building the sql schema.     
- Stop cron by commenting out all lines in `/etc/cron.d/librenms`
- Dump the MySQL database `librenms` and import this into your new server.
- Copy the `rrd/` folder to the new server.
- Copy the `config.php` file to the new server.
- Renable cron by uncommenting all lines in `/etc/cron.d/librenms`

Read More

GenieACS - instalacao (tambem funciona para Ubuntu14.04)

Installation in Debian 8.6

For Sable Version

1- Get package dependencies. I like to use joe as editor for later file edition.

aptitude install checkinstall build-essential zlib1g-dev libssl-dev libreadline6-dev libyaml-dev sudo unzip redis-server mongodb libsqlite3-dev curl joe tmux

2- Get, Compile and Install Ruby 2.3.1

cd /opt
wget https://cache.ruby-lang.org/pub/ruby/2.3/ruby-2.3.1.tar.gz
tar -zxvf ruby-2.3.1.tar.gz
cd ruby-2.3.1
./configure
make
make install
gem install rails
gem install bundle --pre

3- Get, Compile and Install Node 0.12.17

cd /opt
wget https://nodejs.org/download/release/v0.12.17/node-v0.12.17.tar.gz
tar -xzvf node-v0.12.17.tar.gz
cd node-v0.12.17
./configure
make
make install

4- Get GenieACS stable 1.0.7

cd /opt
wget https://github.com/zaidka/genieacs/releases/download/v1.0.7/genieacs-1.0.7.tgz
tar -xzvf genieacs-1.0.7.tgz
mv package genieacs
cd genieacs
npm install
npm run configure

5- Get GenieACS GUI stable v1.0

cd /opt
wget https://github.com/zaidka/genieacs-gui/archive/v1.0.zip
unzip v1.0.zip
mv genieacs-gui-1.0 genieacs-gui
cd genieacs-gui
bundle update
cp config/graphs-sample.json.erb config/graphs.json.erb
cp config/index_parameters-sample.yml config/index_parameters.yml
cp config/summary_parameters-sample.yml config/summary_parameters.yml
cp config/parameters_edit-sample.yml config/parameters_edit.yml
cp config/parameter_renderers-sample.yml config/parameter_renderers.yml
cp config/roles-sample.yml config/roles.yml
cp config/users-sample.yml config/users.yml

From this point you can follow other guides like startup/stop scripts and such.

For Alpha (1.1.0) Version

1- Get package dependencies. I like to use joe as editor for later file edition.

aptitude install checkinstall build-essential zlib1g-dev libssl-dev libreadline6-dev libyaml-dev sudo unzip redis-server mongodb libsqlite3-dev curl joe tmux

2- Get, Compile and Install Ruby 2.3.1

cd /opt
wget https://cache.ruby-lang.org/pub/ruby/2.3/ruby-2.3.1.tar.gz
tar -zxvf ruby-2.3.1.tar.gz
cd ruby-2.3.1
./configure
make
make install
gem install rails
gem install bundle --pre

3- Get, Compile and Install Node 4.6.2

cd /opt
wget https://nodejs.org/download/release/v4.6.2/node-v4.6.2.tar.gz
tar -xzvf node-v4.6.2.tar.gz
cd node-v4.6.2
./configure
make
make install

4- Get GenieACS alpha 1.1.0

cd /opt
wget https://github.com/zaidka/genieacs/archive/master.zip
unzip master.zip
rm master.zip
cd genieacs-master
npm install
npm run configure
npm run compile

5- Get GenieACS GUI alpha v1.1.0

cd /opt
wget https://github.com/zaidka/genieacs-gui/archive/master.zip
unzip master.zip
cd genieacs-gui-master
bundle install
bundle update
cp config/graphs-sample.json.erb config/graphs.json.erb
cp config/index_parameters-sample.yml config/index_parameters.yml
cp config/summary_parameters-sample.yml config/summary_parameters.yml
cp config/parameters_edit-sample.yml config/parameters_edit.yml
cp config/parameter_renderers-sample.yml config/parameter_renderers.yml
cp config/roles-sample.yml config/roles.yml
cp config/users-sample.yml config/users.yml
bin/rails db:migrate RAILS_ENV=development

From this point you can follow other guides like startup/stop scripts and such.

fonte: https://github.com/zaidka/genieacs/wiki/Installation-in-Debian-8.6
-------- Comentários ----
 - há uma carencia grande de documentação para configurar corretamente os CPEs.
- os scripts passa-a-passo para Ubuntu 14.04 ou qq outro que está no site não funcionam corretamente, acreditem testei todos, inclusive o scrip .sh que dá uma m...a!
- para mim o produto não é escalavel o suficiente e nem gera relatorios que eu preciso.
- falta eu incluir os adendos como fail2ban e log.io e concatenar as informações de criação de scripts de down e up que estao espalhado pelo site do projeto. (não sei se farei já que ele não me atendo para aquilo que eu preciso)
  - tem um bug violento na aba de Devices cuja tabela vem em branco na versão 1.1.0, sei que na versao anterior estava funcionando....mas acho que perco alguma features da 1.1 que talvez me seja util.

Read More

Redes - Net Monitoring For Employees & Schools (Monitor, Record and Report All Employee Activity)

Employee monitoring software has become an essential tool for tracking your employee activity to increase productivity in offices.

If you are a business leader, a teacher, a chairman of a company or project supervisor, you need strong tracking application to keep an eye over the screen of your team members.

It happens many times that many team members spare their time in watching unnecessary content on the Internet or using your resources for their personal use or just spending time in web browsing.

If you want to monitor their activities, you need nothing more than installing our software. You don't need to register - just download and install.

Net Monitor for Employees Professional lets you see the screens of all network computer monitors, making it easy to detect an unauthorized and prohibited PC or Mac use.

With this tool, not only can you monitor screens, you can also take control of any network PC or Mac by controlling the mouse and keyboard.

When you are not at your desk, you can record screens, visited web sites and used applications for later review of your team member activity.

You can easily log which websites your employees are visiting or log application use activity - see if employee is using the application and for how long.

Advanced key logger reports allow you to see what your employee are typing in each application.

With the ability to block individual websites, you'll find Net Monitor for Employees Professional invaluable for preventing unproductive web browsing during work time.

Now you can know for sure whether the employee are working hard or they are just wasting time. Record computer screens to get a proof.

fonte: http://www.itlearnweb.com/2016/10/net-monitoring-for-employees-schools.html

nota: nesta fonte tem um link "alternativo" para baixar o software (por sua conta e risco)

Read More

avaliar - Real-time performance monitoring

https://github.com/firehol/netdata

Read More

NetSurveyor - avaliar pois é free

NetSurveyor — 802.11 Network Discovery / Wi-Fi Scanner

NetSurveyor is an 802.11 (Wi-Fi) network discovery tool that gathers information about nearby wireless access points in real time and displays it in useful ways.  Similar in purpose to NetStumbler, it includes many more features. The data is displayed using a variety of different diagnostic views and charts.  Data can be recorded for extended periods and played-back at a later date/time.  Also, reports can be generated in Adobe PDF format. Applications for NetSurveyor include the following:

• During the installation of a wireless network, as an aid in verifying the network is properly configured and antennas are positioned at locations to achieve efficient transmission / reception — that is, for use in verifying Wi-Fi coverage and maximizing beacon signal strength
• Trouble-shooting an existing network or wireless environment that is performing poorly
• Reporting the presence of Wi-Fi networks and local access points and the signal strengths of their beacons
• Conducting wireless site surveys where the installer is interested in learning about the coverage of a new or existing access point, roaming capability, presence of RF interference or “dead spots”, and optimum location of access points, their antennas and client stations
• In a secure business environment, for use in detecting the presence of rogue access points
• As a learning tool to help understand the relationship between access points (BSSIDs), wireless networks (SSIDs), and client stations (STAs)

NetSurveyor is a diagnostic tool that falls under the category of Wi-Fi Scanners or 802.11 Network Discovery Tools. The best known in this category is NetStumbler. A discovery tool reports the Service Set Identifier (SSID) for each wireless network it detects, along with the channel used by the access point (AP) servicing that network. The way this works is that roughly every 100 mSec an AP sends an “I’m here” beacon – and the discovery tool (running on your laptop and using its 802.11 wireless adapter, also known as a station or STA) picks-up that beacon and adds the SSID to its list of known wireless networks. In addition, the discovery tool reports the RSSI (Received Signal Strength Indication) for each AP, which is roughly an indication of how close the AP is to your current location (i.e. how close it is to the client STA). Just to be clear, the RSSI reflects the strength of the beacon as received by the STA – it is not an indication of performance.
NetSurveyor distinguishes itself from other tools in its category in the following ways:

• It’s free.
• In addition to the grid that repeatedly updates information about each access point, there are 6 graphical, diagnostic views: (1) Timecourse of Beacon Qualities For Each Access Point, (2) Differential Display of Beacon Qualities for Each Access Point, (3) Usage of Each of the 802.11 b/g Channels, (4) Timecourse of the Usage of Each of the 802.11 b/g Channels, (5) Heatmap / Waterfall Chart of the 802.11 b/g Channels and (6) Channel Spectrogram of the 802.11 b/g Channels. The more (and different) ways you have at looking at data then the greater the chance something will catch your eye that you might otherwise miss if only a single type of chart were used.
• Generates reports in Adobe PDF format that include the list of access points and their properties along with images of each of the 6 diagnostic charts.
• Powerful and innovative logging and recording capability. Other products, if they even offer a recording/playback feature, usually follow the “tape recorder” paradigm. NetSurveyor's playback mode is unique in that it shows you all the recorded data – that is, you do not press a ‘play’ button and then forced to watch minutes or hours of data scroll by in the hope that some unusual event will catch your eye.  NetSurveyor’s unique approach makes reviewing recorded data a snap.
• If your laptop or PC has multiple wireless adapters installed – not a problem. When NetSurveyor launches it detects each of these and asks you to choose which one to use for that session.
• Supports most all wireless adapters – that is, those that are installed with an NDIS 5.x driver (or later).  This would include wireless adapters running on Windows XP, Vista and Windows 7.
• Can be run in ‘Demo’ mode – so, even if you don’t have a wireless adapter attached to your desktop or laptop machine you can still experiment with the application to see whether it suits your needs.

NetSurveyor is distributed as freeware and does not require a license.  You are free to download it and use it on as many machines as you like.

Read More

RRD - removendo pontos fora da curva

Removing spikes from RRD databases

August 31, 2007 | Filed under: cricket, genDevConfig

RRDs are fixed size databases for storing time series data. They collect information given to them and normalize it to permit trending over long periods of time.
Spurious data may inadvertently make it’s way into a database. Treating this data is possible using the following means:

• Set the rrd-min and/or rrd-max variable(s) for each datasource when creating new RRD databases
• Use rrdtool dump to export the RRD database to XML format, edit out the spurious values and import the data back into the RRD database
• Use rrd tune to apply rrd-min and/or rrd-max variable(s) to an existing RRD database. All values outside the minimum or maximum defined bounds will be set to NaN.

rrdtool tune  --maximum :

• Use the perl script removespikes.pl. This would remove all spikes within 1% of the datapoints in the rrd file. If 1% does not fix them, modify the % value up until all the spikes are removed. Though this may eat up some valid values in the process, use with caution!

perl removespikes.pl -l 1 fastrouter_ethernet0_1.rrd

• Use rrd_editor, a cross platform win32 or perl/tk tool to seek and remove spikes in an RRD. I have not used the tool, but according to comments it works as advertised. It also lets you easily add or remove RRAs and datasources from an RRD, which is a golden feature for many of us.
• Use killspike2 an RRD spike removal script distributed as part of the Cricket network management system. I have not used the script, but it is known to work.

As with any solution, automation and prevention are the keys to a fluid system.
genDevConfig will automatically set rrd-min and rrd-max values for all config-tree targets it creates for Cricket.


fonte: http://acktomic.com/2007/08/31/removing-spikes-from-rrd-databases/

(avaliar pois é muito antigo)
---- manual
rrdtool dump filename.rrd > filename.xml

vi filename.xml

rrdtool restore filename.xml filename.rrd

Read More

IPERF - Testando performance

Testing Network Throughput with an Iperf Server

Every now and again I need to test throughput on a local segment of our LAN. Other times I want to test the throughput of an offsite VPN connection. I am able to accomplish this with Iperf, Iperf2 specifically.  This post will focus on setting up iperf2 in server mode on an Ubuntu 14.04 machine and then using iperf2 from a Macbook.

Note: Iperf3 is available with a few added features. However, I occasionally want to use jperf so that I can pass along graphs to the management team. 

Building the Server

We are going to assume that you already have Ubuntu 14.04 up and running on a VM somewhere. If you need help doing that, check out this article from Frank Hinek.
Launch a SSH session or open terminal and type:
sudo apt-get install iperf
Once installed, you can run:
sudo iperf -s
The -s switch starts iperf in server mode. However, I was interested in automating this a bit more. I wanted to be able to have iperf startup when the server did, with no interaction necessary. This allows for any of our engineers to use iperf without worrying if it has been started up. To do this, run the following commands:
sudo touch /etc/init.d/iperf
sudo chmod +x /etc/init.d/iperf
These two commands create a script called iperf and make it executable. Next, we’ll load the script in nano:
sudo nano /etc/init.d/iperf
and add the following lines:
!#/bin/bash
/usr/bin/iperf -s &
then save the file. You can add any switch you would like. Run iperf –help to see a full list of switches. Finally, we need to tell Ubuntu when we want iperf to run during the boot sequence:
sudo update-rc.d iperf defaults
Ok, our server should be setup. To recap, we installed iperf from the default Ubuntu repos and automated its startup. The service should be running after a reboot, so lets move on to the client setup.

Client Setup – Mac OS X

Setting up a Mac with iperf2 is a simple task thanks to rudix. You can grab the package from this link and install it like any other application. Depending on how your security settings are configured, you may see the following message:

Go ahead and open the Security settings for your Mac and click ‘Open Anyway.’ Go through the standard install process and things should be ready to go in just a few minutes. Once installed, launch terminal and type:
iperf -c *serverIpAddress*
Where *serverIpAddress* is your iperf server. This will launch a single 10 second test, the results should be similar to this screenshot.
Great! So now we have setup our iperf server and verified that we can test. From this point on, you should be able to connect to any LAN segment that has access back to your iperf server and run a throughput test. Please remember this is just a basic overview of what iperf is capable of, and with a little tuning you can hit even better speeds. Have a look at the manual for iperf here or by using the –help switch in terminal.
Note: Windows users can grab a client .exe from iperf.fr as well.

Wrap-Up

There you have it, a quick guide to setting up an Ubuntu 14.04 server with iperf2 and a Mac (or Windows) client setup guide. Overall this is quick and easy setup, and iperf is a great tool to have in your arsenal. It is a nice utility that helps troubleshoot LAN to datacenter connections and with an add-on like jperf you can even report you findings with a visual graph.
In the next week or so I will have another post detailing some of the more advanced features of iperf. If you use iperf and have any good tips or tricks, leave a comment below!


fonte: https://vlan50.com/2015/04/07/testing-network-throughput-with-an-iperf-server/#more-75

Read More

Librenms - dump database

We've had a few reports of database problems with the latest database schema update (055 -> 056).  Symptoms are that lots of pollers are running, but are unable to query the database due to the schema update taking a very long time.  This results in gaps in the graphs due to the hanging pollers.  On most systems, a simple restart of mysql seems to resolve the issue:

service mysql restart          # or equivalent on your distro
./discovery.php -h new         # run the schema update

On one system, a dump & reload of the LibreNMS database was necessary:
vi /etc/cron.d/librenms        # comment out all entries
ps -ef | grep librenms         # wait until all librenms processes are stopped, or kill them
cd /opt/librenms               # (or your install location, if not the standard)
mysqldump --add-drop-database librenms > librenms-backup.sql
mysql librenms < librenms-backup.sql
./discovery.php -h new         # run the schema update
vi /etc/cron.d/librenms        # uncomment all entries to start pollers again



---- ou 

https://dev.mysql.com/doc/workbench/en/wb-admin-export-import-management.html 

---- log all queries from mysql

http://dba.stackexchange.com/questions/62129/how-to-log-all-mysql-queries-into-log-file 

--- liberar acesso remoto a mysql
https://rbgeek.wordpress.com/2014/09/23/enable-remote-access-of-mysql-on-ubuntu/


https://elias.praciano.com/2014/03/mysql-use-o-mysqlcheck-para-fazer-manutencao-das-suas-tabelas/

Read More

LibreNMS - instalação

--- mesclar a informação de dois sites 

http://docs.librenms.org/Installation/Installation-(Debian-Ubuntu)/

http://olivermarshall.net/how-to-install-librenms-on-ubuntu/

 --- habilitar mib - para account users

http://docs.librenms.org/Extensions/MIB-based-polling/

--- meio desatualizado mas bem direto

http://www.magpiebd.net/2015/12/installing-librenms-graph-monitoring-in-redhatcentos-linux-7/ 

Read More

Observium: A Complete Network Management and Monitoring System for RHEL/CentOS

Observium is a PHP/MySQL driven Network Observation and Monitoring application, that supports a wide range of operating systems/hardware platforms including, Linux, Windows, FreeBSD, Cisco, HP, Dell, NetApp and many more. It seeks to present a robust and simple web interface to monitor health and performance of your network.

Install Observium in CentOS/RHEL

Observium gathers data from devices with the help of SNMP and display those data in graphical pattern via a web interface. It makes hefty use of the RRDtool package. It has a number of thin core design goals, which includes collecting as much historical information about devices, being totally auto-discovered with slight or no manual interruption, and having a very simple yet powerful interface.

Read More

LibreNMS – alternative to Observium + others

So a while ago (a year) I wrote a blog post about LibreNMS being an alternative NMS. For me back then LibreNMS was already an alternative anyway but is that still the case a year later?
Well without a doubt – a huge amount of things have changed in the last year with regards LibreNMS and all of them positive so I thought it was worth an update to go through some of those in more detail.

Read More

PRTG - API

https://kb.paessler.com/en/topic/29983-how-to-export-a-list-of-devices-only

---- custom netflow channel definition
https://kb.paessler.com/en/topic/2143-can-i-add-custom-channels-to-standard-packet-sniffer-and-netflow-sensors

Read More

FAN Nagios - Instalação

Procedimetos de Instalação e Configuração do FAN (Fully Automated Nagios) v2.0

Install

Iremos ver o procedimento padrão para a instalação/configuração do FAN (Fully Automated Nagios) v2.0.

A utilização do recurso de servidores de Nagios em uma rede tem como objetivo de monitorar os status dos serviços e sistemas operacionais Microsoft Windows ou GNU/Linux, monitorar Roteadores, Switches e Links de Internet.
Baixa a versão do site oficial do FAN, a versão utilizada nesse procedimento e: FAN-2.0.iso utilize qualquer software para gravar a ISO.

Read More

Zabbix - instalação no Ubuntu 14.04

http://idroot.net/tutorials/how-to-install-zabbix-on-ubuntu-14-04/

https://thedutchlab.com/en/news/installing-zabbix-on-ubuntu-14-04

https://www.zabbix.com/documentation/2.4/manual/installation/install_from_packages#debian_ubuntu

há alguns erros ...revisar

--- suporte a snmp
http://blog.stack.systems/index.php/5-steps-to-zabbix-install/

--- suporte a smokeping
https://github.com/komeiy/Smokeping_Zabbix

Read More

Ferramentas de monitoramento - avaliar

http://blog.aeciopires.com/zabbix-zenoss-ou-pandora-quem-vai-ganhar-esta-briga

http://www.lbd.dcc.ufmg.br/colecoes/erad-rs/2013/009.pdf

http://blog.unicsolution.com/2013/11/best-monitoring-solution-omd-nagios.html

http://www.hardware.com.br/dicas/monitorando-servidores.html

Read More

Cisco WLC SNMP Historical User Statistics Monitoring (w/ Syslog or Splunk)

Purpose:
This document aims to outline a way to extract client association data from a Cisco WLC so that it can be referenced later.  My organization has a business requirement to track all wireless users.  We use the techniques outlined in this document to take a "snap-shot" of our wireless clients associated with a Cisco WLC every 5 minutes and import that data into Splunk, where we can index and search through it any time we want.
This document will cover some basics needed to successfully extract connected client data from a Cisco WLC via SNMP.  Although this feat has probably been done before, I was able to find little documentation on how to extract this specific data and use it for historical purposes.  This document will provide MIB information to key OIDs of value, a bash scripting example, and lessons learned.

Read More

Como monitorar servidor DHCP - CentOS 7

Precisava monitorar os pools de um servidor DHCP rodando em CentOS7 via snmp.

Enfrentei vários problemas e depois de muita pesquisa, consegui reunir um passo-a-passo que me ajudou muito...

1- Inicio, 

Usei o seguinte link para baixar a aplicação escrita em perl:

https://github.com/ohitz/dhcpd-snmp

Dai, vieram os problemas, típicos de quem trabalha com Linux

Read More