Alibaba cloud notes for the first time

The cause of the outbreak , Determined to recharge at home .
Today, I just started to try Alibaba cloud , Buy 89 Yuan minimum configuration package .^_
centOS8.0 V64 CPU2.0G beginner

Next , Take a look at the online Daniel tutorial , To configure .

One . The process of logging in to the remote server

1. Enter instance ：
   Change the password first
   
2. Remote connection again
   
3. SSHD Login failed , Not allowed by default root Sign in , You need to change the configuration file .

4. Remote desktop login is not good ,

5. Try adding the white list of security groups as required

6. After restarting the instance , use SSHD You can log in . Get into linux Interface .

Two . Next install python

1. First loading gcc The smooth
   yum -y install gcc
   Next download python decompression compile Create a soft connection

2. Legend has it that linux The lower version is slightly stable , choice 3.7.6 Well
   wget https://www.python.org/ftp/python/3.7.6/Python-3.7.6.tgz
   Download speed 2-3k It's too slow ,

3. change to the use of sth. FTP Transfer the installation package ,10 Seconds pass
   

4. decompression python3.7.6 To local/install, You need to create a directory in advance The smooth
   tar zxvf Python-3.7.6.tgz

5. install python rely on On the Internet The smooth

yum install libffi-devel -y
yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel gcc libffi-devel gcc make automake autoconf libtool libffi-devel

6. Get into python Extract directory

cd Python-3.7.6

7. Set up python Install the directory and install

CD Go to the decompression Directory then
./configure --prefix=/local/python3
Then enter the installation instructions
make && make install

8. Python Installation successful

It is similar to a burst of frantic shaking of various character codes in the matrix

There is a mistake zlib Not loaded , But it doesn't affect , We'll deal with it later .
zipimport.ZipImportError: can’t decompress data; zlib not available
make: *** [Makefile:1141: install] Error 1

I didn't do soft connection , however python The command is still successful , It could be an example .
The following is the soft connect command , The directories are changed according to the settings , I didn't do .
/*********************************************************
Soft connect command ln -s /usr/local/python3/bin/python3 usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
Test after verification
python3 -V
pip3 -V
/*********************************************************
Enter... On the command line python3, success ！