Detailed explanation of linux crm deployment code

Linux basic configuration

Compile and install python3 in the Linux environment 1. How to install software under Linux - the preferred yum tool is convenient, solve the dependencies between software by yourself, and automatically download and install 1. Configure the yum source (a software warehouse with a bunch of rpm software packages)
      You can choose Alibaba Cloud source, Tsinghua yum source to configure the first warehouse, which contains a large number of commonly used system software wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
      You also need to configure a second warehouse to carry a lot of third-party software (nginx, redis, mongodb, mairadb, etc.)
        wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

    2. You need to understand the yum warehouse directory cd /etc/yum.repos.d/ #The repo files on the first level of this directory will be identified and asked about the yum software warehouse 3. Clear the yum cache, clear the centos official yum software cache yum clean all 
    
    4. Generate a new Alibaba Cloud yum cache yum makecache 
    
    -wget command in a resource URL -apt-get yum under ubuntu
    
  -Using yum repositories, you can not only use third-party yum repositories, but also specify official yum sources (such as the official yum source of mariadb database, the latest software package)
  
    
  -rpm manual installation, which requires handling dependencies -freely select versions, and can extend third-party functions, called source code compilation and installation

View dependent modules

pip3 freeze > requirements.txt
#This requirements.txt file is a module dependency file that Python programmers know

Step 1. Start the mariadb database

Configure yum source

1.yum
  Configure the yum source yum install mariadb-server mariadb -y 
  
2. How to start the software installed through yum systemctl start mariadb
  # systemctl start/stop/status/restart mariadb 
  
3. Log in to the database cmd login

Export the Windows database and import it to the Linux machine

cmd login export command mysqldump -uroot -p se_crm > se_crm.sql #Specify the database to be exported to the se_crm.sql data file and transferred to Linux for import. Simply use the lrzsz tool to transfer or download the xftp tool to import data. Mariadb installation yum install mariadb-server


Method 1:
1. Create a se_crm database create database se_crm; 
#Command to import datamysql -uroot -p se_crm < /opt/se_crm.sql #Specify the se_crm database and import a sql file Method 2:
After logging in to the database, use the command to import data 1. Create a se_crm database create database se_crm; 
  2. Switch database use se_crm;
  3. Read the sql file and write the data set mareiadb> source /opt/se_crm.sql;

Step 2: Prepare Python 3 environment and virtual environment

Compile and install python3 to solve environment variables

How to compile and install python3 under centos7

1. The basic development environment required for compilation must be solved
yum install gcc patch libffi-devel python-devel zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel -y
2. Download the python3 code package and decompress it
wget https://www.python.org/ftp/python/3.6.7/Python-3.6.7.tar.xz
xz -d Python-3.6.7.tar.xz
tar -xf Python-3.6.7.tar

4. Enter the decompressed source code folder
cd Python-3.6.7

5. Execute the command of the compilation trilogy. The first step: find a [configuration executable file, configure], execute it, and specify the software installation location
./configure --prefix=/opt/python367/

Second song: In the previous step, a makefile will be generated, compiled and installed. Under Linux, you must use the gcc tool to compile, and the command used is make
make
The third step is to perform the installation. A /opt/python367 folder will be generated, and all the available interpreters are here.
make install

6. Configure environment variables to facilitate quick use of python3
1. First get the current PATH variable, and then add the bin directory of python3
echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/root/bin

2. Permanently modify the value of PATH
-The first one is a soft link
-Directly modify /etc/profile, the system-wide configuration file. Each user will load this file when logging into the system
vim /etc/profile
Write the new PATH variable

PATH="/opt/python367/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/root/bin"


3. You have to log in again or read this /etc/profile manually
source /etc/profile #Make the variables in this file take effect

Download virtualenvwrapper tool

virtualenvwrapper, an upgraded virtual environment tool

1. Install, do not activate the virtual environment
pip3 install -i https://pypi.douban.com/simple virtualenvwrapper

2. Modify the configuration file to load the virtualenvwrapper tool every time you start the computer

1. Open a user's personal environment variable configuration file Global configuration file /etc/profile #Each user login takes effect User personal configuration file ~/.bash_profile

vim ~/.bash_profile #root will read the code in this file when logging in

2. Fill in the following information and modify it according to your own Python environment

export WORKON_HOME=~/Envs #Set the unified management directory of virtualenv
export VIRTUALENVWRAPPER_VIRTUALENV_ARGS='--no-site-packages' #Add virtualenvwrapper parameters to generate a clean and isolated environment
export VIRTUALENVWRAPPER_PYTHON=/opt/python367/bin/python3.6 #Specify Python interpreter
source /opt/python367/bin/virtualenvwrapper.sh #Execute the virtualenvwrapper installation script

3. At this time, you can use this tool to quickly create a virtual environment

mkvirtualenv virtual environment name#Create a virtual environment
lsvirtualenv #List the names of virtual environments
workon virtual environment name#Activate or switch virtual environment
lssitepackages #Lists the module information in the virtual environment, which is actually
cdvirtualenv #Enter the virtual environment home directory
cdsitepackages #Enter the virtual environment third-party module directory

Use the mkvirtualenv command to create a new virtual environment for starting crm

mkvirtualenv s23_crm

Copy the crm code to the linux machine

rz # Drag the crm project compression package to linux,
# Unzip

Solve the dependent environment required for crm operation, django and other modules, and pymysql

Solution 1:
The stupid way is to check and solve the errors one by one.
pip3 install -i https://pypi.douban.com/simple django==1.11.23
pip3 install -i https://pypi.douban.com/simple-pymysql
pip3 install -i https://pypi.douban.com/simple django-multiselectfield
pip3 install -i https://pypi.douban.com/simple django==1.11.23

The less stupid way:
Command to export Python interpreter module
pip3 freeze > requirements.txt #This requirements.txt file is a module dependency file that Python programmers know.

Install all modules in the requirements.txt file

pip3 install -r requirements.txt #Specify dependency file installation and read all module information in the file

The above are all the relevant knowledge points introduced this time. Thank you for your learning and support for 123WORDPRESS.COM.