How to record linux ssh terminal output and replay it for all users

How to record linux ssh terminal output and replay it for all users

we can get it done using script command .you can save all the session from all users login in to your server and there activity. this will help you to troubleshoot the issues .

1-  edit the profile file ( /etc/profile )and insert the below code.

……………………………………………………
if [ "x$SESSION_RECORD" = "x" ]
then
timestamp=$(date +%d-%m-%Y-%T)
session_log=/var/log/session/session.$USER.$$.$timestamp
SESSION_RECORD=started
export SESSION_RECORD
script -t -f -q 2>${session_log}.timing $session_log
exit
fi
……………………………………………………
2- create a directory to record session

Continue reading How to record linux ssh terminal output and replay it for all users

How to install bigbluebutton web conference server.

How to install BigBlueButton web conference server.

The minimum requirements for a BigBlueButton server are

  • Ubuntu 16.04 64-bit OS running Linux kernel 4.x
  • 8 GB of memory with swap enabled (16 GB of memory is better)
  • 4 CPU cores (8 is better)
  • TCP ports 80 and 443 are accessible
  • UDP ports 16384 – 32768 are accessible
  • Port 80 is not in use by another application

Continue reading How to install bigbluebutton web conference server.

Backup and Restore your Centos

Some time you want to take backup of your server including application and settings .below are the easy method a small example

1- The first step is to create a location to store the backup. For this article we’re going to store the backup on the same hard drive as the installed operating system

2-Make a backup directory where you will keep backup file.

mkdir /backup

3- Now we will create a compressed version of the Operating System in one single file (tarball) using the tar command.

tar cvpzf /backups/backup.tgz --exclude=/proc --exclude=/lost+found --exclude=/backups --exclude=/dev --exclude=/sys --exclude=/boot/grub --exclude=/boot/grub2 --exclude=/etc/fstab --exclude=/etc/sysconfig/network-scripts/ --exclude=/etc/udev/rules.d/70-persistent-net.rules  /

Now transfer your backup.tgz file to new server .In order to restore your server from the previously created tarball the server must have the same Operating System version loaded on it.

To Restore your backup use the following.

tar xvpfz /backups/backup.tgz -C /