Citrix XenServer 6.2 Zabbix Agent installation

Install packages:

rpm -ivh http://repo.zabbix.com/zabbix/2.0/rhel/5/i386/zabbix-release-2.0-1.el5.noarch.rpm
rpm -ivh http://repo.zabbix.com/zabbix/2.0/rhel/5/i386/zabbix-2.0.12-1.el5.i386.rpm
rpm -ivh http://repo.zabbix.com/zabbix/2.0/rhel/5/i386/zabbix-agent-2.0.12-1.el5.i386.rpm

Add Zabbix agent to services:

echo -e "zabbix\t\t10050/tcp\t\t\t#Zabbix-Agent"  >> /etc/services

Enable the traffic (iptables rule)

lokkit
- customize
- other services: zabbix:tcp

Check whether the traffic is already enabled:

iptables-save  | grep 10050

Set the Zabbix server IP/DNS:

sed -i 's/Server=127.0.0.1/Server=monserver/' /etc/zabbix/zabbix_agentd.conf

Restart the agent:

/etc/init.d/zabbix-agent restart

Done

Dlink DNS 323 fan always runs

I have a Dlink DNS 323 NAS with original firmware.
The device works great but sometimes the fan runs continously but no reason, because the temperature is not high.

When I login into the administration page and set the fan control to "always high" then save the configuration, the fan switch to maximum RPM.
After that I set the fan control to off/ low/high and save the config, the fan switchs off. After that the fan control works good for a period again.
It switch to low and switch off depending the temperature.

I've wrote a small script which can help me to resolve this issue. It can be run manually or with some modification from cron.

Here is the script:

#!/bin/bash

USER="admin"
echo -n "Admin pasword: "
read PASS
echo -n "NAS IP: "
read IP
echo "Logging in..."
wget -q --save-cookies cookies.txt --post-data 'f_LOGIN_NAME=$USER&f_LOGIN_PASSWD=$PASS&Config_Button=Configuration' http://$IP/goform/formLogin -O - > /dev/null
echo "Switch to high RPM"
wget -q --load-cookies cookies.txt --post-data 'f_onoff0=1&f_time=15&f_fan=2&power_onoff0=1' http://$IP/goform/SetPowerManagement -O - > /dev/null
echo "Wait a sec..."
sleep 1
echo "Switch off"
wget -q --load-cookies cookies.txt --post-data 'f_onoff0=1&f_time=15&f_fan=0&power_onoff0=1' http://$IP/goform/SetPowerManagement -O - > /dev/null
echo "Finished"
rm -f cookies.txt

Please feel free to use it.

Cheap car GPS tracking with OpenWRT I. The basics

My goal to assembly a reliable GPS tracking system by cheap components with OpenWRT.
I would like to install it into my car. It would record the GPS data (latitude, longitude, speed) in 10 seconds and uploads to a server when it hase WIFI connection.
In my firs run it would scan the available wifi connections frequently and try to connect and upload the recorded data trough non-secure access points.
I would like to make a simple web page where I can follow the car's movement on the google map.


I'm good with it. It is running in pilot mode.

The parts of the project:

• TP-LINK  TL-MR3020 router running OpenWRT
• USB Hub to share to multiple the USB connectors
• Flash drive to store recorded data
• GPS receiver  to collect data
• Power bank to work in case the car's battery disconnected
• PCA with power connectors, fuse, DC-DC converter, etc
• Webserver listening on the Internet

Here you can see a picture from the current status:

First I present the components then I write the "why" in the following posts.

TP-LINK  TL-MR3020 
This is a cheap, portable router which can share your 3G mobile connection as a wifi access point. It has one piece of USB connector, one peace 10/100Mb/s LAN connector and built-in 5DBm WIFI antenna.
An advantage of this device is it can run by USB power (5V, max 500mA).
I've replaced the original firware to OpenWRT by this tutorial.
It was very simply, works out of the box.

USB Hub
It is a cheap one, but can work with external power. The external power is important because the GPS receiver use approx 300mA. Without the extra power the Linux wrote I/O error into the log...
In the first step I use one connector for the USBdrive and another for the GPS receiver. (I plan to complete the system with a 3G stick to send the recorded data to the server immediately)

Flash drive
The router have only 4MB Flash storage, therefore it needs more space to store the recorded data. I've used a flashdrive 2GB space.

GPS receiver
During the period I've collected data to my project I found this and this article. They used the Globalsat BU-353 GPS Reciever. It is the most expensive part of the project, but it works pretty good.

Power bank
I've chosen a 5V and 2600mAh  power bank which can charge from USB connector. Optimally it will not works because I will connect the stuff onto constant current source in the car. One of my expectation is it have to works for a while when  external power is not available. It has a normal USB connector for power input and a micro USB for power output. Both connectors are connected constantly.

PCA
As you can see in the picture I soldered some components onto a project board. The most important component is the DC-DC converter which makes stable 5V  from the car's 12-14V.

Webserver
Basically the system store the collected data on the flash drive but in case it has connection to the internet it synchronize the local data with the remote database.
I would like to make a simple web page where i can follow the car's movement on the google map.
It would inform the visitor about the car's current position, the last "hearthbeat" when the car logged in the page, etc


I will coming soon with the presentation of the components

Logalyze Installation

I've installed the the Logalyzer on Debian Linux 7.1 64bit  by the followings:

Required packages:

apt-get install -y jbossas4 libapache2-mod-jk libjetty-java  libapache2-mod-jk openjdk-6-jdk

Delete the cache:
apt-get clean

Download the installer:
cd /usr/src
wget http://www.logalyze.com/downloads/finish/2-installer/20-logalyze-full-package-tar-gz-archive -P .
tar xzvf 20-logalyze-full-package-tar-gz-archive

cd logalyze/conf
 

Configure the Logalyze:

 rename 's/\.sample$//' *.sample
 

Not the best but works:
 

echo -e "\n\nexport JAVA_HOME=/usr/lib/jvm/java-6-openjdk-amd64/ \n" >> ../bin/setenv.sh

Start the stuff:

cd /usr/src/logalyze/bin/
./setenv.sh
./startup.sh
cd /usr/src/logalyze/admin/bin/
 ./startup.sh

Shutdown the service:

cd /usr/src/logalyze/bin/
./shutdown.sh
cd ../admin/bin/
./shutdown.sh

Open the browser
http://IPADDRESS:8080
Username: admin
password:logalyze

Graylog2 Installation

I've installed the the Graylog2 on Debian Lnux 6.0.7 by the following script:

#! /bin/bash



#Provided by @mrlesmithjr
#EveryThingShouldBeVirtual.com
# KP mod
# Debian 6.0 Install Script
#
# setup logging
# Logs stderr and stdout to separate files.
exec 2> >(tee "./graylog2/install_graylog2.err")
exec > >(tee "./graylog2/install_graylog2.log")
#
# Apache Settings
#change x.x.x.x to whatever your ip address is of the server you are installing on or let the script auto detect your IP
#which is the default
#SERVERNAME="x.x.x.x"
#SERVERALIAS="x.x.x.x"
#
#
echo "Detecting IP Address"
IPADDY="$(sudo ifconfig | grep -A 1 'eth0' | tail -1 | cut -d ':' -f 2 | cut -d ' ' -f 1)"

SERVERNAME=$IPADDY
SERVERALIAS=$IPADDY

echo "Disabling CD Sources and Updating Apt Packages and Installing Pre-Reqs"
sudo sed -i -e 's|deb cdrom:|# deb cdrom:|' /etc/apt/sources.list
sudo apt-get -qq update
sudo apt-get -y install git curl apache2 libcurl4-openssl-dev apache2-prefork-dev libapr1-dev libcurl4-openssl-dev apache2-prefork-dev libapr1-dev build-essential openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison subversion pkg-config python-software-properties

#Debian 6.0 Testing of all-in-one script
#sudo apt-get -y install apt-file
#sudo apt-file update

#Install Oracle Java 6
echo "Installing Oracle Java 6"
sudo apt-get install openjdk-6-jre

echo "Downloading Elasticsearch"

git clone https://github.com/elasticsearch/elasticsearch-servicewrapper.git
sudo chown -R $USER:$USER /opt

cd /opt
git clone https://github.com/elasticsearch/elasticsearch-servicewrapper.git

echo "Downloading Elastic Search, Graylog2-Server and Graylog2-Web-Interface to /opt"

wget https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-0.20.6.tar.gz
wget http://download.graylog2.org/graylog2-server/graylog2-server-0.11.0.tar.gz
wget http://download.graylog2.org/graylog2-web-interface/graylog2-web-interface-0.11.0.tar.gz

#extract files
echo "Extracting Elasticsearch, Graylog2-Server and Graylog2-Web-Interface to /opt"

for f in *.tar.gz
do
tar zxf "$f"
done

# Create Symbolic Links
echo "Creating SymLinks for elasticsearch and graylog2-server"
ln -s elasticsearch-0.20.6/ elasticsearch
ln -s graylog2-server-0.11.0/ graylog2-server

#Install elasticsearch
echo "Installing elasticsearch"

mv *servicewrapper*/service elasticsearch/bin/
rm -Rf *servicewrapper*
sudo /opt/elasticsearch/bin/service/elasticsearch install
sudo ln -s `readlink -f elasticsearch/bin/service/elasticsearch` /usr/bin/elasticsearch_ctl
sed -i -e 's|# cluster.name: elasticsearch|cluster.name: graylog2|' /opt/elasticsearch/config/elasticsearch.yml
/etc/init.d/elasticsearch start

#Test elasticsearch
# curl -XGET 'http://localhost:9200/_cluster/health?pretty=true'

#Install mongodb
echo "Installing MongoDB"
# KP valtoztatasa
apt-key adv --keyserver keyserver.ubuntu.com --recv 7F0CEB10
echo "deb http://downloads-distro.mongodb.org/repo/debian-sysvinit dist 10gen" | sudo tee /etc/apt/sources.list.d/10gen.list
sudo apt-get -qq update
sudo apt-get -y install mongodb-10gen

#Install graylog2-server
echo "Installing graylog2-server"

cd graylog2-server-0.11.0/
cp /opt/graylog2-server/elasticsearch.yml{.example,}
sudo ln -s /opt/graylog2-server/elasticsearch.yml /etc/graylog2-elasticsearch.yml
cp /opt/graylog2-server/graylog2.conf{.example,}
sudo ln -s /opt/graylog2-server/graylog2.conf /etc/graylog2.conf
sed -i -e 's|mongodb_useauth = true|mongodb_useauth = false|' /opt/graylog2-server/graylog2.conf

echo "Creating /etc/init.d/graylog2-server startup script"

(
cat <<'EOF'
#!/bin/sh
#
# graylog2-server: graylog2 message collector
#
# chkconfig: - 98 02
# description: This daemon listens for syslog and GELF messages and stores them in mongodb
#
CMD=$1
NOHUP=`which nohup`
JAVA_CMD=/usr/bin/java
GRAYLOG2_SERVER_HOME=/opt/graylog2-server
start() {
 echo "Starting graylog2-server ..."
$NOHUP $JAVA_CMD -jar $GRAYLOG2_SERVER_HOME/graylog2-server.jar > /var/log/graylog2.log 2>&1 &
}

stop() {
PID=`cat /tmp/graylog2.pid`
echo "Stopping graylog2-server ($PID) ..."
kill $PID
}

restart() {
echo "Restarting graylog2-server ..."
stop
start
}

case "$CMD" in
start)
start
;;
stop)
stop
;;
restart)
restart
;;
*)
echo "Usage $0 {start|stop|restart}"
RETVAL=1
esac
EOF
) | sudo tee /etc/init.d/graylog2-server

sudo chmod +x /etc/init.d/graylog2-server

#Start graylog2-server on bootup
echo "Making graylog2-server startup on boot"

sudo update-rc.d graylog2-server defaults

#Install graylog2 web interface
echo "Installing graylog2-web-interface"

cd /opt/
ln -s graylog2-web-interface-0.11.0 graylog2-web-interface

#Install Ruby
echo "Installing Ruby"

sudo apt-get -y install libgdbm-dev libffi-dev
\curl -L https://get.rvm.io | bash -s stable
# KP valtoztatasa
source /etc/profile.d/rvm.sh
#source $HOME/.rvm/scripts/rvm
rvm install 1.9.2

#Install Gems
echo "Installing Ruby Gems"

cd /opt/graylog2-web-interface
gem install bundler --no-ri --no-rdoc
bundle install

#Set MongoDB Settings
echo "Configuring MongoDB"

echo "
production:
 host: localhost
 port: 27017
 username: grayloguser
 password: password123
 database: graylog2" | tee /opt/graylog2-web-interface/config/mongoid.yml

#Create MongoDB Users and Set Passwords
echo "Creating MongoDB Users and Passwords"

mongo admin --eval "db.addUser('admin', 'password123')"
mongo admin --eval "db.auth('admin', 'password123')"
mongo graylog2 --eval "db.addUser('grayloguser', 'password123')"
mongo graylog2 --eval "db.auth('grayloguser', 'password123')"

#Test Install
#cd /opt/graylog2-web-interface
#RAILS_ENV=production script/rails server

# Install Apache-passenger
echo "Installing Apache-Passenger Modules"

gem install passenger
passenger-install-apache2-module --auto

#Add passenger code
echo "Adding Apache Passenger modules to /etc/apache2/httpd.conf"

echo "LoadModule passenger_module $HOME/.rvm/gems/ruby-1.9.2-p320/gems/passenger-3.0.18/ext/apache2/mod_passenger.so" | sudo tee -a /etc/apache2/httpd.conf
echo "PassengerRoot $HOME/.rvm/gems/ruby-1.9.2-p320/gems/passenger-3.0.18" | sudo tee -a /etc/apache2/httpd.conf
echo "PassengerRuby $HOME/.rvm/wrappers/ruby-1.9.2-p320/ruby" | sudo tee -a /etc/apache2/httpd.conf

#Restart Apache2
echo "Restarting Apache2"

sudo /etc/init.d/apache2 restart
#If apache fails and complains about unable to load mod_passenger.so check and verify that your passengerroot version matches

#Configure virtualhost
echo "Configuring Apache VirtualHost"

echo "
<VirtualHost *:80>
ServerName ${SERVERNAME}
ServerAlias ${SERVERALIAS}
DocumentRoot /opt/graylog2-web-interface/public

#Allow from all
Options -MultiViews

ErrorLog /var/log/apache2/error.log
LogLevel warn
CustomLog /var/log/apache2/access.log combined
</VirtualHost>" | sudo tee /etc/apache2/sites-available/graylog2

# Enable virtualhost
echo "Enabling Apache VirtualHost Settings"

sudo a2dissite 000-default
sudo a2ensite graylog2
sudo service apache2 reload

# Restart apache
echo "Restarting Apache2"

sudo /etc/init.d/apache2 restart

#Now we need to modify some things to get rsyslog to forward to graylog. this is useful for ESXi syslog format to be correct.
echo "Updating graylog2.conf, rsyslog.conf"

sudo sed -i -e 's|syslog_listen_port = 514|syslog_listen_port = 10514|' /etc/graylog2.conf
sudo sed -i -e 's|mongodb_password = 123|mongodb_password = password123|' /etc/graylog2.conf
sudo sed -i -e 's|#$ModLoad immark|$ModLoad immark|' /etc/rsyslog.conf
sudo sed -i -e 's|#$ModLoad imudp|$ModLoad imudp|' /etc/rsyslog.conf
sudo sed -i -e 's|#$UDPServerRun 514|$UDPServerRun 514|' /etc/rsyslog.conf
sudo sed -i -e 's|#$ModLoad imtcp|$ModLoad imtcp|' /etc/rsyslog.conf
sudo sed -i -e 's|#$InputTCPServerRun 514|$InputTCPServerRun 514|' /etc/rsyslog.conf
sudo sed -i -e 's|*.*;auth,authpriv.none|#*.*;auth,authpriv.none|' /etc/rsyslog.confQ
echo '$template GRAYLOG2,"<%PRI%>1 %timegenerated:::date-rfc3339% %HOSTNAME% %syslogtag% - %APP-NAME%: %msg:::drop-last-lf%\n"' | sudo tee /etc/rsyslog.d/32-graylog2.conf
echo '$ActionForwardDefaultTemplate GRAYLOG2' | sudo tee -a  /etc/rsyslog.d/32-graylog2.conf
echo '$PreserveFQDN on' | sudo tee -a  /etc/rsyslog.d/32-graylog2.conf
echo '*.err;*.crit;*.alert;*.emerg;cron.*;auth,authpriv.* @localhost:10514' | sudo tee -a  /etc/rsyslog.d/32-graylog2.conf

#Restart All Services
echo "Restarting All Services Required for Graylog2 to work"

sudo service elasticsearch restart
sudo service mongodb restart
sudo service graylog2-server restart
sudo service rsyslog restart
sudo service apache2 restart

#All Done
echo "Installation has completed!!"
echo "Browse to IP address of this Graylog2 Server Used for Installation"
echo "IP Address detected from system is $IPADDY"
echo "Browse to http://$IPADDY"
echo "You Entered $SERVERNAME During Install"
echo "Browse to http://$SERVERNAME If Different"
echo "EveryThingShouldBeVirtual.com"
echo "@mrlesmithjr"

# KP valtoztatasa
mkdir -p /opt/graylog2-web-interface/tmp/cache
chmod 777 -R /opt/graylog2-web-interface/tmp/
Start the web-interface with the following:

cd /opt/graylog2-web-interface/ ; /usr/local/rvm/gems/ruby-1.9.2-p320/bin/passenger  start -e production | logger -t graylog-web-interface





The original script is from this site:

http://everythingshouldbevirtual.com/ubuntu-12-04-graylog2-installation