django（channel）到 ubuntu

1。准备工作

　　删除各app/migrations/下的以数字开头的数据库同步日志文件：

  假设你使用的是Pycharm，我们要生成环境包：

pip freeze > requirements.txt

阿里云安全组的配置，也就是打开80和22端口

2、正式部署

// pip -V  无效
// 安装pip
apt install python-pip
pip install --upgrade pip

// 1.虚拟环境安装
pip install virtualenv
// 2.虚拟环境管理包
apt install virtualenvwrapper
// 3.新建.virtualenvs文件夹
mkdir .virtualenvs
// 4.修改.bashrc文件，在最后添加
export WORKON_HOME=/root/.virtualenvs
source /usr/share/virtualenvwrapper/virtualenvwrapper.sh
// 5.执行以下命令
source .bashrc
//安装Python3.6.4

sudo mkidr /usr/local/python3  

wget https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tgz

cd /usr/local/python3
sudo tar -xvf Python-3.6.4.tgz

cd /usr/local/python3/Python-3.6.4
sudo ./configure --prefix=/usr/local/python3

make
make install

//注：若出现

zipimport.ZipImportError: can't decompress data; zlib not available
Makefile:1079: recipe for target 'install' failed
make: *** [install] Error 1

等错误，需要安装依赖文件：

 sudo apt-get install -y make build-essential libssl-dev zlib1g-dev libbz2-dev  libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev  xz-utils tk-dev

//  注最好不要修改默认python 为3.6，某些系统功能需要python3.5

// 6.新建虚拟环境

mkvirtualenv EnvName -p /usr/local/python3.6.4/bin/python3
// 查看 可用的环境
lsvirtualenv
// 切换环境

  workon online

注： 此时pip install -r requirements  还是失败。所以我就一个一个装了

pip install django 

pip install mysqlclient

pip3 install mysqlclient 报错 “/bin/sh: 1: mysql_config: not found”的解决方法

执行 sudo apt-get install libmysqlclient-dev，

然后执行 pip install mysqlclient

pip install -U channels


mysql -uroot -h 127.0.0.1 -p

create database mydatabase charset utf8;
exit;

python manage.py makemigrations
python manage.py migrate

python manage.py runserver 0.0.0.0:80

pip install uwsgi

uwsgi --ini uwsgi.ini

// 关闭uwsgi
killall -9 uwsgi

// 安装nginx
apt-get install nginx

// 配置 参照： https://www.cnblogs.com/Mvloveyouforever/p/8627777.html

// 

 修复样式

nginx 配置

location /static {
            alias /var/searchlog/static/;
        }

先在settings.py配置文件中设置一个：STATIC_ROOT = '/var/searchlog/static/'

然后再运行python manage.py collectstatic ，这样django会将相应的静态文件放到static的目录下面。

 

 

安装 redis

apt-get install redis-server

安装驱动

pip3 install channels_redis

安装  supervisor

apt install supervisor

现在，您将需要创建超级用户配置文件（通常位于 /etc/supervisor/conf.d/- 这里，我们让Supervisor监听TCP端口，然后将该套接字关闭到子进程，以便它们可以共享相同的绑定端口：

[fcgi-program:asgi]
# TCP socket used by Nginx backend upstream
socket=tcp://localhost:8002

# Directory where your site's project files are located
directory=/var/www/SevOnline

#environment=PATH="/root/.virtualenvs/online/bin"
# Each process needs to have a separate socket file, so we use process_num
# Make sure to update "mysite.asgi" to match your project name
command=/root/.virtualenvs/online/bin/daphne -u /tmp/daphne%(process_num)d.sock --fd 0 --access-log - --proxy-headers SevOnline.asgi:application

# Number of processes to startup, roughly the number of CPUs you have
numprocs=2

# Give each process a unique name so they can be told apart
process_name=asgi%(process_num)d

# Automatically start and recover processes
autostart=true
autorestart=true

# Choose where you want your log to go
stdout_logfile=/var/www/SevOnline/asgi.log
redirect_stderr=true

// supervisor 相关命令
// 开启/关闭 supervisor  
/etc/init.d/supervisor start

/etc/init.d/supervisor stop

// 查看所管进程状态
supervisorctl status

让主管（程序管理）重读并更新其工作：

$ sudo supervisorctl reread
$ sudo supervisorctl update

创建 asgi.py 放在 setting同目录下

"""
ASGI entrypoint. Configures Django and then runs the application
defined in the ASGI_APPLICATION setting.
"""

import os
import django
from channels.routing import get_default_application

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "myproject.settings")
django.setup()
application = get_default_application()

运行 daphne   仅为测试用，不能保存日志。推荐使用上边的supervisor 

daphne -p 8001 myproject.asgi:application  

配置nginx跳转

upstream channels-backend {
    server localhost:8002;
}

location /chat {
        proxy_pass http://channels-backend;    # 转发到daphne-worker
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_redirect     off;
        proxy_set_header   Host $host;
        proxy_set_header   X-Real-IP $remote_addr;
        proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header   X-Forwarded-Host $server_name;
        proxy_read_timeout  36000s;
        proxy_send_timeout  36000s;
    }