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Alexandru Zbarcea edited this page Jan 21, 2015 · 6 revisions

Table of Contents

After cloning a new VM

  • old VM: katelloSrv
  • new VM: katello

Post cloning configuration

  • Login onto the cloned machine
  • run the command ifconfig to see the MAC address given by udev:
ifconfig | grep ether
  • edit the interface configuration file and modify the the mac address as well as the IP address
vi /etc/sysconfig/network-scripts/ifcfg-ens3
  • replace the MAC address by the one provided by udev
  • Replace the IP by the appropriate one.
  • Change the hostname: CentOS hostname
  • edit /etc/hosts and add the mapping between the IP address with FQDN. e.g:
192.168.2.200  kattelo.farm.net kattelo
  • restart the Network
# systemctl restart network (CentOS 7)
# service network restart (CentOS 6)

Extend storage

Let's see what disks we have: 

brw-rw----. 1 root disk 8,  0 Jan 21 13:03 /dev/sda
brw-rw----. 1 root disk 8,  1 Jan 21 13:03 /dev/sda1
brw-rw----. 1 root disk 8,  2 Jan 21 13:03 /dev/sda2
brw-rw----. 1 root disk 8, 16 Jan 21 13:03 /dev/sdb
brw-rw----. 1 root disk 8, 17 Jan 21 13:03 /dev/sdb1
brw-rw----. 1 root disk 8, 32 Jan 21 13:08 /dev/sdc

Create partition 

# cfdisk /dev/sdc
# pvcreate /dev/sdc1
# vgs
# vgextend centos /dev/sdc1
# vgs
# df -h
# lvextend -L +100G /dev/mapper/centos-root
# resize2fs /dev/mapper/centos-root
# df -h
# vgs

Manage Services

CentOS7 is using systemd, and not upstart!

Reference: redhat - Managing Services with systemd

References

Transcript

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