008day--linux basic Network configuration and SSH service

First, the Linux network configuration

Ifconfig eno16777736 192.168.19.48/24 | eno16777736   (NIC name) 192.168.19.48/24(temporary IP address)

DNS : vim/etc/resolv.conf content display (nameserver 202.156.16.47 (DNS address))

Gateway : route add default GW (gateway address) netmask 255.255.255.0

View gateway Information : routing Table

change to static IP : cd/etc/sysconfig/network-scripts/ vim ifcfg-eno16777736(NIC name)

Change bootproto= ' static ' ------>static static meaning

After entering the VIM editor, add the following specified content under bootproto= ' static ':

ipaddr=192.168.19.48

netmask=255.255.255.0

gateway=192.168.16.254

dns1= 192.168.16.254

:Wq Save exit

Restart service :systemcal Restart Network

View DNS:cat/etc/resolv.conf

Vim/etc/hosts IP Address domain name

Set host name : hostnamectl set-hostname new_name(new hostname)

SCP /etc/hosts 192.16.19.47 (Destination IP) :/tmp #类似上传

SCP: copy /etc/hosts: file address to be copied 192.16.19.47 (Destination IP): object to be passed to /tmp: Save Address (To be preceded by:)

SCP 192.16.19.47 (Destination IP):/tmp/etc/hosts #类似下载

the client creates the lock and key : Ssh-keygen and then returns

View the locks and keys created : ls/root/.ssh

Display content :id_rsa(key) id_rsa.pub(lock)

s sh-copy id-i 192.168.19.47(Destination IP address, service-side lock)

on the service side :cd/root/.ssh

View content :ls

Display content :authorized_keys(the lock just passed over)

Now the Client Access server does not have to enter the password every time.

008day--linux basic Network configuration and SSH service