二：安装过程

1、ANACONDA

（1）登录网址：https://www.anaconda.com/download/

（2）下载对系统和python版本的文件，比如Anaconda3-5.3.0-Linux-x86_64.sh

（3）执行安装命令： 

yum install -y bzip2

bash ./ Anaconda3-5.3.0-Linux-x86_64.sh

接下来按提示操作即可

 

2、Gunicorn

（1）在python下安装，命令：

        pip install gunicorn

（2）查看gunicorn进程：

        pstree -ap|grep gunicorn

（3）杀掉gunicorn进程：

        kill -9 xxxxx

（4）运行命令配置：

   可以用python脚本作为命令配置文件。在flask项目跟目录下建立gunicorn_config.py文件，内容如下（根据实际情况修改）：

# coding=utf-8
import sys
import os
import multiprocessing



path_of_current_file = os.path.abspath(__file__)

path_of_current_dir = os.path.split(path_of_current_file)[0]



_file_name = os.path.basename(__file__)



sys.path.insert(0, path_of_current_dir)



worker_class = 'egg:meinheld#gunicorn_worker'
workers = multiprocessing.cpu_count() * 2 + 1


chdir = path_of_current_dir



worker_connections = 1000
timeout = 30
max_requests = 2000
graceful_timeout = 30
loglevel = 'info'


reload = True
debug = True


bind = "%s:%s" % ("127.0.0.1", 8080)



pidfile = '%s/run/%s.pid' % (path_of_current_dir, _file_name)

errorlog = '%s/logs/%s_error.log' % (path_of_current_dir, _file_name)

accesslog = '%s/logs/%s_access.log' % (path_of_current_dir, _file_name)

注意：run和logs文件夹需要手动创建

 

3、Supervisor

 

（1）安装： 

        yum install epel-release

        yum install -y supervisor

（2）编辑配置文件和设置开机启动：

   服务配置文件文件位置：/usr/lib/systemd/system/supervisord.service

   修改内容如下：

[Unit]

Description=Supervisor daemon

 

[Service]

Type=forking

 

PIDFile=/var/run/supervisord.pid

ExecStart=/bin/supervisord -c /etc/supervisord.conf

ExecStop=/bin/supervisorctl shutdown

ExecReload=/bin/supervisorctl reload

KillMode=process

Restart=on-failure

RestartSec=42s

[Install]

WantedBy=multi-user.target

 

（3）启动服务：

        systemctl enable supervisord   # 开机自启动

        systemctl start supervisord     # 启动supervisord服务

        systemctl status supervisord    # 查看supervisord服务状态

（4）守护任务配置文件：

文件位置：/etc/supervisord.conf

添加内容：

[program:gunicorn_flask_dochelper]

directory = /home/www

command =  /root/anaconda3/bin/gunicorn  -c  /home/www/gunicorn_config.py   app:app

autostart = true    

startsecs = 10

autorestart = true

startretries = 3

user = root

redirect_stderr = true

stdout_logfile_maxbytes = 20MB 

stdout_logfile_backups = 20 

也可以在/etc/supervisord.d目录下新建xxx.ini文件，写入以上内容，会自动加载。

 

（5）常用命令：

启动服务

supervisorctl start all

supervisorctl start service_name

关闭服务

supervisorctl stop all

supervisorctl stop service_name

查看状态

supervisorctl status service_name

重新启动所有服务或者是某个服务

supervisorctl restart all

supervisorctl restart service_name

配置文件修改后重新载入

supervisorctl reload

 

（6）常见错误：

Error: Another program is already listening on a port that one of our HTTP servers is configured to use. Shut this program down first before starting

解决方法：

find / -name supervisor.sock

unlink /name/supervisor.sock 

 

4、nginx

（1）安装：

yum install nginx

 

（2）配置文件

默认路径为：/etc/nginx/nginx.conf

可以通过下面命令查看路径：

nginx –t

 

（3）反向代理配置：

支持https

server {

    listen 443;

    server_name www.xxx.com;

    client_max_body_size 10M;

    ssl on;

    ssl_certificate      "xxx.crt";

    ssl_certificate_key  "xxx.key";

    ssl_session_timeout  10m;

    ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;

    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

    ssl_prefer_server_ciphers on;

 

    location / {

        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        proxy_set_header Host $host;

        proxy_set_header X-Real-IP $remote_addr;

        proxy_set_header X-Scheme $scheme;

        proxy_redirect http:// $scheme://;

        proxy_pass http://127.0.0.1:8080;

    }

    location /static/(.*) {

             root /home/www/app/static/;

    }

}

 

负载均衡

upstream www.test.com { 

     server 192.168.0.118:8080; 

     server 192.168.0.119:8080; 

} 

 

server {

    listen 443;

    server_name www.xxx.com;

    client_max_body_size 10M;

    ssl on;

    ssl_certificate      "xxx.crt";

    ssl_certificate_key  "xxx.key";

    ssl_session_timeout  10m;

    ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;

    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

    ssl_prefer_server_ciphers on;

 

    location / {

        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        proxy_set_header Host $host;

        proxy_set_header X-Real-IP $remote_addr;

        proxy_set_header X-Scheme $scheme;

        proxy_redirect http:// $scheme://;

        proxy_pass http://www.test.com;

    }

    location /static/(.*) {

             root /home/www/app/static/;

    }

}

 

（4）启动服务：

nginx

 

（5）其他命令

nginx -s stop

nginx -s quit

nginx -s reload 

nginx –t  # 测试配置文件是否正确