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egrep valid ip address

posted this in Linux, Redhat Centos, Server Setup, Ubuntu on May 20th, 2013

Example to egrep valid ip address

To egrep all valid ip addresses in current directory:

egrep -r '[[:digit:]]{1,3}\.[[:digit:]]{1,3}\.[[:digit:]]{1,3}\.[[:digit:]]{1,3}' .

1	egrep -r '[[:digit:]]{1,3}\.[[:digit:]]{1,3}\.[[:digit:]]{1,3}\.[[:digit:]]{1,3}' .

neo4j SSL howto

posted this in Linux, Redhat Centos, Server Setup, Ubuntu on May 2nd, 2013

Getting SSL to work with neo4j can be very frustrating. The crux of the problem is that their documentation isn’t very robust.

Here’s what they don’t tell you:

Both the cert and the key MUST be in DER format!

example to convert a PEM formatted crt key to a der formatted crt key openssl x509 . . . → Read More: neo4j SSL howto

convert valid godaddy cert key to java keystore for tomcat

posted this in Linux, Redhat Centos, Server Setup, Tomcat, Ubuntu on April 30th, 2013

I spend hours trying to figure this out and here are the fruits of my labor

Howto: Import valid cert and key into a java keystore

note: use the same password in each step

Step 1: Export your key and cert to pkcs12 format

openssl pkcs12 -export -inkey some.key -in some.crt -out some.p12

1	openssl pkcs12 -export -inkey some.key -in some.crt -out some.p12

Step 2: Import p12 file to java key store

keytool -importkeystore -srckeystore some.p12 -srcstoretype PKCS12 -destkeystore truststore.jks

1	keytool -importkeystore -srckeystore some.p12 -srcstoretype PKCS12 -destkeystore truststore.jks

nginx code igniter remove index.php prefix

posted this in nginx, Redhat Centos, Server Setup, Ubuntu on January 30th, 2013

Objective

Remove the index.php prefix from your nginx code igniter instance.

Assumptions In your main nginx conf file you define how php is called (unix socket or ip:port) You will replace foo.example.com with whatever your domain name is The proper logging path will be defined per your system as opposed to the location i have . . . → Read More: nginx code igniter remove index.php prefix

passing bash variable to perl command in bash script

posted this in bash, FreeBSD, Linux, O/S, perl, Redhat Centos, Scripts, Server Setup on January 18th, 2013

Recently I tried passing a bash variable to perl command in bash script, it didn’t end well.

Troy Engel from http://tacticalvim.wordpress.com/ was nice enough to point out the issue:

use sed instead of perl for what you need; it’s simpler, faster and uses the bash variables easily.

I set up a test script /home/someuser/test.sh to show:

linux view disk space usage

posted this in Linux, Server Setup, Ubuntu on November 12th, 2012

Disk Space Usage Visual Tools

Some great tools for viewing disk space usage are: pydf (essential df with colors) Philesight (Web-based implementation of Filelight) ncdu (awesome text-only GUI!)

Philesight

Philesight is a tool to browse your filesystem and see where the diskspace is being used at a glance. Philesight is implemented as a simple command . . . → Read More: linux view disk space usage

Install Django centos redhat

posted this in Linux, Redhat Centos, Server Setup on November 8th, 2012

To install Django on Centos or Redhat

echo "Installing httpd and httpd-devel"
yum -q -y --enablerepo=ius install httpd httpd-devel > /dev/null 2>&1
chkconfig httpd on
sed -i 's/Listen 80/Listen 8080/g' /etc/httpd/conf/httpd.conf
service varnish start
service httpd start		

To Install Python 2.7.2 on redhat or centos

echo "Installing httpd and httpd-devel"

yum -q -y --enablerepo=ius install httpd httpd-devel > /dev/null 2>&1

chkconfig httpd on

sed -i 's/Listen 80/Listen 8080/g' /etc/httpd/conf/httpd.conf

service varnish start

service httpd start

To Install Python 2.7.2 on redhat or centos

echo "Install Python 2.7.2"
mkdir -p /usr/local/src/python.2.7.2.install
cd /usr/local/src/python.2.7.2.install
wget "http://downloads.activestate.com/ActivePython/releases/2.7.2.5/ActivePython-2.7.2.5-linux-x86_64.tar.gz"
tar xzvf ActivePython-2.7.2.5-linux-x86_64.tar.gz
cd ActivePython-2.7.2.5-linux-x86_64
./install.sh -I /opt/ActivePython-2.7

echo "Install mod_wsgi"
wget http://modwsgi.googlecode.com/files/mod_wsgi-3.3.tar.gz
tar -zxvf mod_wsgi-3.3.tar.gz
cd mod_wsgi-3.3
./configure --enable-shared --prefix=/opt/mod_wsgi-3.3 --with-python=/opt/ActivePython-2.7/bin/python
make
make install

echo "Installing memcached"
yum -y --enablerepo=ius install memcached
sed -i 's/1024/20480/g' /etc/sysconfig/memcached
sed -i 's/64/1024/g' /etc/sysconfig/memcached
service memcached restart

echo "Installing Django"
export PATHOLD=$PATH
export PATH=/opt/ActivePython-2.7/bin:/root/.local/bin:$PATH
pypm -g install django
pypm -g install mysql-python
pypm -g install python-memcached 1.48
export PATH=$PATHOLD

echo "Install Python 2.7.2"

mkdir -p /usr/local/src/python.2.7.2.install

cd /usr/local/src/python.2.7.2.install

wget "http://downloads.activestate.com/ActivePython/releases/2.7.2.5/ActivePython-2.7.2.5-linux-x86_64.tar.gz"

tar xzvf ActivePython-2.7.2.5-linux-x86_64.tar.gz

cd ActivePython-2.7.2.5-linux-x86_64

./install.sh -I /opt/ActivePython-2.7

echo "Install mod_wsgi"

wget http://modwsgi.googlecode.com/files/mod_wsgi-3.3.tar.gz

tar -zxvf mod_wsgi-3.3.tar.gz

cd mod_wsgi-3.3

./configure --enable-shared --prefix=/opt/mod_wsgi-3.3 --with-python=/opt/ActivePython-2.7/bin/python

make

make install

echo "Installing memcached"

yum -y --enablerepo=ius install memcached

sed -i 's/1024/20480/g' /etc/sysconfig/memcached

sed -i 's/64/1024/g' /etc/sysconfig/memcached

service memcached restart

echo "Installing Django"

export PATHOLD=$PATH

export PATH=/opt/ActivePython-2.7/bin:/root/.local/bin:$PATH

pypm -g install django

pypm -g install mysql-python

pypm -g install python-memcached 1.48

export PATH=$PATHOLD

Install Python 2.7.2 redhat centos

posted this in Linux, Redhat Centos, Server Setup on November 8th, 2012

To Install Python 2.7.2 on redhat or centos

echo "Install Python 2.7.2"
mkdir -p /usr/local/src/python.2.7.2.install
cd /usr/local/src/python.2.7.2.install
wget "http://downloads.activestate.com/ActivePython/releases/2.7.2.5/ActivePython-2.7.2.5-linux-x86_64.tar.gz"
tar xzvf ActivePython-2.7.2.5-linux-x86_64.tar.gz
cd ActivePython-2.7.2.5-linux-x86_64
./install.sh -I /opt/ActivePython-2.7

echo "Install Python 2.7.2"

mkdir -p /usr/local/src/python.2.7.2.install

cd /usr/local/src/python.2.7.2.install

wget "http://downloads.activestate.com/ActivePython/releases/2.7.2.5/ActivePython-2.7.2.5-linux-x86_64.tar.gz"

tar xzvf ActivePython-2.7.2.5-linux-x86_64.tar.gz

cd ActivePython-2.7.2.5-linux-x86_64

./install.sh -I /opt/ActivePython-2.7

howto set up local svn repository

posted this in Server Setup on November 2nd, 2012

Objective

Set up a local svn repository to store some code

Install subversion

yum install subversion

1	yum install subversion

Repository Setup

We will set up a path to store the repositories then create the initial repository

mkdir -p /usr/local/svn
svnadmin create /usr/local/svn/repo1

1 2	mkdir -p /usr/local/svn svnadmin create /usr/local/svn/repo1

Initial Import of content to the repository Linux/Unix

svn import /path/to/files/to_checkin file:///usr/local/svn/repo1/trunk -m "first Import"

1	svn import /path/to/files/to_checkin file:///usr/local/svn/repo1/trunk -m "first Import"

Windows

svn import project file:///d:/repository_name/project -m "First Import"

1	svn import project file:///d:/repository_name/project -m "First Import"

Network

svn import project http://host_name/svn_dir/repository_name/project -m "First Import"

1	svn import project http://host_name/svn_dir/repository_name/project -m "First Import"

Accessing your svn repository remotely

If you aren’t using apache . . . → Read More: howto set up local svn repository

RHCSA Training Labs

posted this in Linux, Redhat Centos, Server Setup on August 16th, 2012

These are some labs I have crafted to prep for the RHCSA exam. Hopefully you will find this useful!

Brakertech’s RHCSA Training Labs Objective: Configure NTP Client to sync against a custom NTP server Configure Local NTP Server

The first step is to get your local ntp server running

Install Required Package

# yum install ntp

1	# yum install ntp

Modify /etc/ntp.conf . . . → Read More: RHCSA Training Labs

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