Note_Tech

All technological notes.

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RHCSA Network

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• RHCSA Network
  • Qestion
  • Solution A: nmtui
  • Solution B: nmcli
  • Confirm

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Qestion

Q1-ServerA-Network Configuration Configure TCP/IP and “hostname” as following:

IP ADDRESS = 192.168.128.100
NETMASK = 255.255.255.0
GATEWAY = 192.168.128.2
DNS = 192.168.128.2
Hostname = serverA

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Solution A: nmtui

• Using nmtui

Solution 1:

Using nmtui Terminal> nmtui Select interface > edit > Select IPv4 configuration: Manual show >

• Addresses: 192.168.128.100/24
• Gateway: 192.168.128.2
• DNS servers: 192.168.128.2 OK select activation connection Set Hostname: serverA quit

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Solution B: nmcli

• Network

# check the dev
nmcli d

# modify connection
nmcli c modify ens160 ipv4.addresses 192.168.128.100/24
nmcli c modify ens160 ipv4.gateway 192.168.128.2
nmcli c modify ens160 ipv4.dns 192.168.128.2
nmcli c modify ens160 ipv4.method manual
nmcli c modify ens160 connection.autoconnect yes

# confirm
nmcli c show ens160

# Apply the changes
nmcli c up ens160

• Hostname

hostnamectl set-hostname serverA

# Verify the hostname
hostnamectl status

# Ensure the hostname resolves locally
vi /etc/hosts
# 192.168.128.100 serverA

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Confirm

# verify ip addresses
ip a

# hostname
hostname
cat /etc/hostname

# gateway
route -n
ip r

# DNS
cat /etc/resolv.conf

# connectivity
ping -c 4 192.168.128.2
nslookup google.com