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Python Sinhala Tutorial with Example - 1  

Python Sinhala Tutorial with Example - 2

Python Sinhala Tutorial with Example - 3

  

Python Sinhala Tutorial with Example - 4

  

Python Sinhala Tutorial with Example - 5

  

Install GlassFish Server on Cent OS VPS

Install JDK

Create a directory where you want to install JDK:

# mkdir /usr/java

Change to the directory:

# cd /usr/java

Download the latest stable JDK (32 bit or 64 bit):

wget -- no-cookies -- no-check- certificate -- header "Cookie:
gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" “http://download.oracle.com/otn-pub/java/jdk/8u25- b17/jdk-8u25-linux- i586.tar.gz”

Unpack the downloaded JDK file into the newly created directory:

# tar -xzf jdk-8u25- linux-i586.tar.gz

Set the PATH for the JDK installation by editing your ‘~/.bash_profile’ file

and adding the following lines:

JAVA_HOME=/usr/java/jdk1.8.0_25
PATH=$JAVA_HOME/bin:$PATH

After setting the PATH variable, execute:

# .bash_profile

Or you can simply exit and open the command prompt again.

Check if the PATH is set correctly:

# echo $JAVA_HOME

Install the GlassFish Server

Change to the directory where you want to install the GlassFish application:

# cd /opt

Download the latest GlassFish zip installation file:

# wget http://download.java.net/glassfish/4.1/release/glassfish-4.1.zip

Unpack the downloaded zip file:

# unzip glassfish-4.1.zip

Usually the zip file is extracted to a directory called ‘/glassfish4′

Since it is not recommended to run the glassfish process as root, we need to add group and user for the GlassFish application:

# groupadd glassfish

# useradd -s /bin/bash -g glassfish glassfish

# chown -R glassfish: /opt/glassfish4/

Change the password for the ‘glassfish’ user:

# passwd glassfish

Changing password for user glassfish.

New password:

Create a start/stop/restart script:

#!/usr/bin/env bash

# description: Glassfish start/stop/restart

# processname: glassfish

# chkconfig: 2445 20 80

JAVA_HOME=/usr/java/jdk1.7.0_05

export JAVA_HOME

PATH=$JAVA_HOME/bin:$PATH

export PATH

GLASSFISH_HOME=/opt/glassfish3/glassfish/

GLASSFISH_USER=glassfish

case $1 in

start)

    su $GLASSFISH_USER -c "$GLASSFISH_HOME/bin/asadmin start-domain domain1"

;;

stop)

    su $GLASSFISH_USER -c "$GLASSFISH_HOME/bin/asadmin stop-domain domain1"

;;

restart)

    su $GLASSFISH_USER -c "$GLASSFISH_HOME/bin/asadmin stop-domain domain1"

    su $GLASSFISH_USER -c "$GLASSFISH_HOME/bin/asadmin start-domain domain1"

;;

esac

exit 0

Save the script and make it executable:

# chmod +x /etc/init.d/glassfish

If you want to start up your GlassFish application on boot execute the following commands:

# chkconfig --add glassfish
# chkconfig glassfish on

To start/stop/restart Glassfish use the command:

# /etc/init.d/glassfish start/stop/restart

Once the installation is completed, you can open the default GlassFish homepage at http://domain.com:8080 or the GlassFish admin console at http://domain.com:4848 

To access GlassFish admin 

Go to the ‘bin’ directory in Glashfish directory

Change the password of admin this way:

./asadmin -- host localhost -- port 4848 change-admin-password

It will prompt you with user, type "admin", admin password, retype admin password.

Once this is done, enable the security with the following command:

./asadmin -- host localhost -- port 4848 enable-secure-admin

(Default admin password is [empty])

References:

https://www.rosehosting.com/blog/install-glassfish- on-a- centos-6- vps/

https://ivan-site.com/2012/05/download- oracle-java- jre-jdk- using-a- script/

http://stackoverflow.com/questions/8619063/glassfish-3- 1-1- how-to- enable-secure-admin- for-different- domains

http://www.howtogeek.com/102468/a-beginners- guide-to- editing-text- files-with-vi/

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