WorkingWithRHEL7

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Getting rid of firewalld and coming back to iptables

Here are the magic commands :

systemctl stop firewalld
systemctl disable firewalld
yum remove firewalld
yum install iptables-services
systemctl enable iptables.service
systemctl enable ip6tables.service

Don't forget to configure SSH with system-config-firewall-tui. And after that :

systemctl start iptables.service
systemctl start ip6tables.service

Replacing NetworkManager by network

Type these commands :

systemctl stop NetworkManager
systemctl disable NetworkManager

And now, we can restart network :

service network restart

Adoption of Predictable Network Interface Names

Names of NICs will change. To prepare yourself to the new naming rules, please read these documents :

Default filesystem : xfs

RHEL7 adopts XFS as the default filesystem. It might generates troubles with our Quattor scdb -> check our filesystem layout templates.


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