Linux Basics (6)

One, temporary configuration network (IP, gateway, DNS)

Ifconfig View Network Configuration

Modify the IP address ifconfig ens33 192.168. 255.129/

ENS33 nic name, 192.168. 255.129/24 is the IP address/subnet mask to configure

Two , Permanent configuration network (IP, gateway, DNS)

Ifconfig View Network Configuration

Modify the network configuration, save.

Third, for the machine in the cluster to set the hostname, the use of/etc/hosts file to resolve all the host names in their own cluster, the corresponding, the cluster configuration should be changed to use the host name of the way

Hostnamectl set-hostname python #设置主机名

Hostname #查看主机名

Host:

Ext. 1

Ext. 2

Ext. 3

Test

Enter the following command on the host

Enter the domain name separately in the webpage, PYTHON-WEB1,PYTHON-WEB2,PYTHON-WEB3, the test succeeds.

Iv. ssh login, scp upload, download, ssh key login, modify SSH server port to 8888 and then sign in and SCP test

SSH login: ssh+ domain name or IP address

SCP upload

SCP download

SSH secret key Login

Ssh-kengen #生成秘钥

ls/root/.ssh/#秘钥生成目录

ssh-copy-id-i + domain name #发送锁给服务机

Vim/etc/ssh/sshd_config #修改主机ssh端口为888

Systemctl Restart sshd #重启主机ssh服务

SSH + domain or IP address-P 888 #客户端使用主机名 + PORT login

SSH [email protected]+ domain name or IP address-P 888 #登录测试

V. Organize the bash command type to verify the priority of finding a command

Command interpreter Bash priority descending from left to right:

Alias>compound commands>function>build_in>hash> $PATH >error

Linux Basics (6)