CentOS MATE to CentOS Core

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Description:

Over the last few months I’ve been moving my CentOS MATE VM’s to CentOS core. Here is how I setup my template Core VM:

To Resolve:

  1. Used GUI installer to create the VM. Created root password and admin user.

  2. At first login:

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    yum update
yum install net-tools

  3. First tasks after updates is to set a static IP:

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    vi /etc/sysconfig/network-scripts/enp0s3

#set it like:

TYPE="Ethernet"
BOOTPROTO="none"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="no"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_PEERDNS="yes"
IPV6_PEERROUTES="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="enp0s3"
UUID="233f2b4b-877c-4b28-b17d-1eb091ded288"
DEVICE="enp0s3"
ONBOOT="yes"
IPADDR="192.168.1.100"
PREFIX="24"
GATEWAY="192.168.1.1"
DNS1="8.8.8.8"

  4. Next we configure SSH:

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    #check version
ssh -v

#edit the config file
vi /etc/ssh/sshd_config

#change the following:

# Protocol 2,1
Protocol 2

# PermitRootLogin yes
PermitRootLogin no

#save, exit, restart the service so it will take effect
systemctl restart sshd.service

  5. Setup firewall

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