day11-report.org

2016-Feb-10 Thursday

From 9:00 AM TO 01:00 AM:

• I have gone through install Openvz and Creating Containers from online tutorial which is available at here .And done the tutorial.Here I have learned about container and creating containers using following commands those are

Container:

• The Virtual machines are known as Containers in OpenVZ.the main advantage of Containers is that they will share the resources of the physical machine dynamically. That means, a particular amount of RAM or Disk space will not be allocated to any particular container.

Creating Containers in Openvz:

• The list of available pre-created templates availale here for dowbload centos minimal template
• vzctl (It is a command, which is used to manage containers)
• cd vz/template/cache (which is the default directory to store the downloaded templates.)
• vzctl create 101 –ostemplate centos-7-x86_64-minimal (which is used to create the first virtual machine)
• 101 – Container ID (It typically starts from 100)
• Next, we have to setup the IP address to the Container, for example: 192.168.1.103.
• vzctl set 101 –ipadd 192.168.1.103 –save (which is used to set ip address)
• vzctl set 101 –nameserver 8.8.8.8 –save (which is used to assign DNS server)
• vzctl start 101 (To start container)
• vzctl enter 101 (Entering the container)

From 02:00 AM TO 06:00 PM:

• I read about basic commands of Opnenvz and practiced following commands those are
• vzlist (It is a command, which is used to list the running vpss(virtual private service))

vzlist

• vzctl start CTID (which is used to start container)

vzctl start 101

• vzctl stop CTID (which is used to stop container)

vzctl stop 101

• vzctl status CTID (which is used to view the status of vpps)

vzctl status 101

• vzctl enter CTID (which is used to entering container)

vzctl enter 101

• vzctl set CTID –hostname New_hostname –save (Set hostname for a Server)

vzctl set 101 --hostname raghu --save

• vzctl set CTID –ipadd xx.xx.xx.xx –save (Set IP address)

vzctl set 101 --ipadd 10.2.56.110 --save

• vzctl set CTID –ipdel xx.xx.xx.xx –save (Delete IP address)

vzctl set 101 --ipdel 10.2.56.110 --save

• vzctl set CTID –nameserver xx.xx.xx.xx –save (Add name server)

vzctl set 101 --nameserver 10.4.2.222 --save

• vzctl set CTID –userpasswd root:new_password –save (Reset userpassword and rootpassword)

vzctl set 101 --raghu root:xxxx --save

• vzctl destroy CTID (Delete container)

vzctl destroy 101

• vzctl suspend CTID (suspended container)

vzctl suspend 101

• vzctl restart 101 (To Restart container)

vzctl restart 101

• vzyum 101 -y update (Updating system)

vzctl 101 -y update

• vzyum 101 -y install <package> (To intall package)

vzyum 101 -y install firefox

• vzctl set {ctid} –ram {ram} –swap {swap} –save (Set the ram size)

vzctl set 101 --ram 1.2G --swap 10M --save

• vzctl set 101 –diskspace <disksize> –save (set diskspace)

vzctl set 101 --diskspace 100G --save

• vzctl set CTID –diskspace $SoftLimit$:$HardLimit$ –save

vzctl set 101 --diskspace 10G:20G --save

• vzctl exec 101 command (replace command with the command you need to execute)

vzctl exec 101 df -h (replace command with the command you need to execute)