Episode 1 best B tutorial of VMware virtual machine installation (12 days)

1、 New virtual machine
Customize （ next step ）—— Default —— Install later
operating system —— Client operating system （Linux）; Version selection CentOs7 64 position —— change
Virtual machine name —— Processor configuration 1 Next 2—— Memory size is 2G—— Network type （NAT）—— Default —— Default
—— Default —— The disk size is 50/ Can be split into multiple files —— Default —— complete

2、 install CentOs7 System
Click on hadoop100- double-click CD/DVD- Use IOS Image file - determine

start-up hadoop100 virtual machine
chinese - Simplified Chinese ~ Change the time ~ Software selection （ desktop ）~ Installation target location （ I want to configure the partition ）
Zoning ：/boot=1g; file system ：ext4 ,wap=4g： file system :swap,/=45g; file system ：xfs;
KDUMP= Cancel start
Network and hostname ： Open the network ; Change host name ：hadoop100
SECURITY POLICY： Leave it on by default ; Click finish installation
Set up root password -- establish root user --- restart
Amend to accept the agreement --- Complete the configuration --- Default --- Default --- Default --- allow access to --- skip --- Start using

3、NAT The network configuration
edit --- Virtual Network Editor --- change setting ---- Click on VMnet8---NAT Pattern --- Modify subnet ip Address 192.168.10.0
NAT Set up --- gateway IP192.168.10.2--- determine --- complete
Advanced network settings --- More network adapter options --- choice VMent8--- Right click --- Select Properties
choice Internet Protocol version 4--- Set the default gateway ：192.168.10.2--- The preferred DNS Server address ：192.168.10.2
spare DNS Server address ：8.8.8.8--- determine --- determine

4、 Start virtual machine
i Enter editor  Esc Exit the editor  shift+：+wq Save and exit
Get into root user （ Or enter atguigu The user then enters the command su root Switch to a root Account ）
modify IP Address order ：vim /etc/sysconfig/network-scripts/ifcfg-ens33
Find dynamic modification IP Address changed to static IP Address static
Set up IP Address ：192.168.10.100
Set up the gateway ：192.168.10.2
Set the domain name parser :192.168.10.2
Modify host name command ：hostname
The default is hadoop100
modify hosts file
command ：vim /etc/hosts
192.168.10.100 hadoop100
192.168.10.101 hadoop101
192.168.10.102 hadoop102
192.168.10.103 hadoop103
192.168.10.104 hadoop104
192.168.10.105 hadoop105
192.168.10.106 hadoop106
192.168.10.107 hadoop107
192.168.10.108 hadoop108
reboot restart

5、 install Xshell7： Host and name input 192.168.10.100-- Click user authentication --- user name ：atguigu-- Input password --- Click finish --- Connect --- Accept and save

6、 install xftp（ Enter your user name and company at will )： open xftp There is a green bag on the top , Click on the green package , You can transfer files to the virtual machine

7、 Template virtual machine environment preparation
Use yum The installation requires that the virtual machine can access the Internet normally ,yum Before installation, you can test the networking of virtual machines （root Account ）
Test network commands ：ping www.baidu.com
install epel-release： Equivalent to a software warehouse
[[email protected] ~]# yum install -y epel-release

If you see the picture above PID To be locked, you need to kill the process number ; command ：kill -9 3030 

    Command again [[email protected] ~]# yum install -y epel-release   

How to avoid the above situation   install epel-release Have succeeded           

Be careful ： If Linux The minimum system version is installed , The following tools also need to be installed ; If you install Linux
Desktop standard , You do not need to do the following
* net-tool： Toolkit collection , contain ifconfig Wait for the order
[[email protected] ~]# yum install -y net-tools 
* vim： Editor
[[email protected] ~]# yum install -y vim
Turn off the firewall and turn off the firewall to start automatically
[[email protected] ~]# systemctl stop firewalld
[[email protected] ~]# systemctl disable firewalld.service
To configure atguigu Users have root jurisdiction , Easy to add later sudo perform root Orders of authority
[[email protected] ~]# vim /etc/sudoers
modify /etc/sudoers file , stay %wheel Add a line below this line , As shown below ：
atguigu ALL=(ALL) NOPASSWD:ALL
stay /opt Create a folder in the directory , And modify the master and group
stay /opt Create under directory module、software Folder
[[email protected] ~]# mkdir /opt/module
[[email protected] ~]# mkdir /opt/software
modify module、software The owner and group of the folder are atguigu user
[[email protected] ~]# chown atguigu:atguigu /opt/module 
[[email protected] ~]# chown atguigu:atguigu /opt/software
Uninstall the... From the virtual machine JDK
Be careful ： If your virtual machine is minimized, you don't need to perform this step .
[[email protected] ~]# rpm -qa | grep -i java | xargs -n1 rpm -e 
--nodeps
rpm -qa： Query all installed rpm software package
grep -i： Ignore case
xargs -n1： Means that only one parameter is passed at a time
rpm -e –nodeps： Force uninstall software
[[email protected] ~]# reboot Restart the virtual machine