rhcsa notes: 1-6

 rhcsa notes: 

1. change root password via grub

2. set repository

dnf config-manager --add-repo nazov_repo

3.ntp configure: (chronyd)

timedatectl set-timezone "Europe/Bratislava"

timedatectl set-ntp yes

dnf install chronyd

systemctl status chronyd 

vi /etc/chrony.conf

timedatectl

4. add secondary IP addresses

ipv4 : 10.0.0.5/24

ipv6: fd01::100/64

nmcli connection show 

nmcli connection modify System\ eth1 +ipv4.address 10.0.0.5/24

nmcli connection reload 

ifconfig

nmcli connection modify System\ eth1 +ipv6.method manual ipv6.addresses fd01::100/64

nmcli connection show System\ eth

5. enable packet forwarding on system 1

/etc/sysctl.conf

net.ipv4.ip_forward=1

sysctl -p

cat /proc/sys/net/ipv4/ip_forward

6. system should boot into the multiuser target and boot messages shoudl be present

a) systemctl set-default multi-user.target

b) vi /etc/default/grub

--> delete rhgb quiet 

---> 

grub2-mkconfig -o /boot/grub2/grub.cfg