安装flask

# pip install flask

创建工作目录

# mkdir /home/myproject  #创建项目目录

在myproject下写一个简单的run.py测试

from flask import Flask
app = Flask(__name__)
@app.route('/')
def index():
    return 'Hello World'
if __name__ == '__main__':
    app.run()

启动

# python run.py

此时，用浏览器访问 http://127.0.0.1:5000 就能看到网页显示 Hello World

安装gunicorn

# pip install gunicorn

使用命令启动

gunicorn -w4 -b 0.0.0.0:5000 run:app

-w 表示开启多少个 worker，-b 表示 gunicorn 开发的访问地址,结束 gunicorn 只需执行 pkill gunicorn.由于退出终端后服务就会停止，所以我们需要另一个工具来帮我们管理。

安装supervisor

# pip install supervisor

安装报错，不支持Python3

Complete output from command python setup.py egg_info:
Supervisor requires Python 2.4 or later but does not work on any version of Python 3. You are using version 3.6.2 (default, Aug 27 2017, 12:28:32)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-11)]. Please install using a supported version.

解决方法：

# pip install virtualenv
# virtualenv --distribute -p /usr/bin/python2 super #super目录可自己命名
# cd super
# source bin/activate
# ./bin/pip install supervisor

生成 supervisor 默认配置

# echo_supervisord_conf > /etc/supervisord.conf

修改supervisorpei配置

; Sample supervisor config file.
;
; For more information on the config file, please see:
; http://supervisord.org/configuration.html
;
; Notes:
;  - Shell expansion ("~" or "$HOME") is not supported.  Environment
;    variables can be expanded using this syntax: "%(ENV_HOME)s".
;  - Quotes around values are not supported, except in the case of
;    the environment= options as shown below.
;  - Comments must have a leading space: "a=b ;comment" not "a=b;comment".
;  - Command will be truncated if it looks like a config file comment, e.g.
;    "command=bash -c 'foo ; bar'" will truncate to "command=bash -c 'foo ".

[unix_http_server]
file=/tmp/supervisor.sock   ; the path to the socket file
;chmod=0700                 ; socket file mode (default 0700)
;chown=nobody:nogroup       ; socket file uid:gid owner
;username=user              ; default is no username (open server)
;password=123               ; default is no password (open server)

;[inet_http_server]         ; inet (TCP) server disabled by default
;port=127.0.0.1:9001        ; ip_address:port specifier, *:port for all iface
;username=user              ; default is no username (open server)
;password=123               ; default is no password (open server)

[supervisord]
logfile=/tmp/supervisord.log ; main log file; default $CWD/supervisord.log
logfile_maxbytes=50MB        ; max main logfile bytes b4 rotation; default 50MB
logfile_backups=10           ; # of main logfile backups; 0 means none, default 10
loglevel=info                ; log level; default info; others: debug,warn,trace
pidfile=/tmp/supervisord.pid ; supervisord pidfile; default supervisord.pid
nodaemon=false               ; start in foreground if true; default false
minfds=1024                  ; min. avail startup file descriptors; default 1024
minprocs=200                 ; min. avail process descriptors;default 200
;umask=022                   ; process file creation umask; default 022
;user=chrism                 ; default is current user, required if root
;identifier=supervisor       ; supervisord identifier, default is 'supervisor'
;directory=/tmp              ; default is not to cd during start
;nocleanup=true              ; don't clean up tempfiles at start; default false
;childlogdir=/tmp            ; 'AUTO' child log dir, default $TEMP
;environment=KEY="value"     ; key value pairs to add to environment
;strip_ansi=false            ; strip ansi escape codes in logs; def. false

; The rpcinterface:supervisor section must remain in the config file for
; RPC (supervisorctl/web interface) to work.  Additional interfaces may be
; added by defining them in separate [rpcinterface:x] sections.

[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface

; The supervisorctl section configures how supervisorctl will connect to
; supervisord.  configure it match the settings in either the unix_http_server
; or inet_http_server section.

[supervisorctl]
serverurl=unix:///tmp/supervisor.sock ; use a unix:// URL  for a unix socket
;serverurl=http://127.0.0.1:9001 ; use an http:// url to specify an inet socket
;username=chris              ; should be same as in [*_http_server] if set
;password=123                ; should be same as in [*_http_server] if set
;prompt=mysupervisor         ; cmd line prompt (default "supervisor")
;history_file=~/.sc_history  ; use readline history if available

; The sample program section below shows all possible program subsection values.
; Create one or more 'real' program: sections to be able to control them under
; supervisor.


; The sample eventlistener section below shows all possible eventlistener
; subsection values.  Create one or more 'real' eventlistener: sections to be
; able to handle event notifications sent by supervisord.

;[eventlistener:theeventlistenername]
;command=/bin/eventlistener    ; the program (relative uses PATH, can take args)
;process_name=%(program_name)s ; process_name expr (default %(program_name)s)
;numprocs=1                    ; number of processes copies to start (def 1)
;events=EVENT                  ; event notif. types to subscribe to (req'd)
;buffer_size=10                ; event buffer queue size (default 10)
;directory=/tmp                ; directory to cwd to before exec (def no cwd)
;umask=022                     ; umask for process (default None)
;priority=-1                   ; the relative start priority (default -1)
;autostart=true                ; start at supervisord start (default: true)
;startsecs=1                   ; # of secs prog must stay up to be running (def. 1)
;startretries=3                ; max # of serial start failures when starting (default 3)
;autorestart=unexpected        ; autorestart if exited after running (def: unexpected)
;exitcodes=0,2                 ; 'expected' exit codes used with autorestart (default 0,2)
;stopsignal=QUIT               ; signal used to kill process (default TERM)
;stopwaitsecs=10               ; max num secs to wait b4 SIGKILL (default 10)
;stopasgroup=false             ; send stop signal to the UNIX process group (default false)
;killasgroup=false             ; SIGKILL the UNIX process group (def false)
;user=chrism                   ; setuid to this UNIX account to run the program
;redirect_stderr=false         ; redirect_stderr=true is not allowed for eventlisteners
;stdout_logfile=/a/path        ; stdout log path, NONE for none; default AUTO
;stdout_logfile_maxbytes=1MB   ; max # logfile bytes b4 rotation (default 50MB)
;stdout_logfile_backups=10     ; # of stdout logfile backups (0 means none, default 10)
;stdout_events_enabled=false   ; emit events on stdout writes (default false)
;stderr_logfile=/a/path        ; stderr log path, NONE for none; default AUTO
;stderr_logfile_maxbytes=1MB   ; max # logfile bytes b4 rotation (default 50MB)
;stderr_logfile_backups=10     ; # of stderr logfile backups (0 means none, default 10)
;stderr_events_enabled=false   ; emit events on stderr writes (default false)
;environment=A="1",B="2"       ; process environment additions
;serverurl=AUTO                ; override serverurl computation (childutils)

; The sample group section below shows all possible group values.  Create one
; or more 'real' group: sections to create "heterogeneous" process groups.

;[group:thegroupname]
;programs=progname1,progname2  ; each refers to 'x' in [program:x] definitions
;priority=999                  ; the relative start priority (default 999)

; The [include] section can just contain the "files" setting.  This
; setting can list multiple files (separated by whitespace or
; newlines).  It can also contain wildcards.  The filenames are
; interpreted as relative to this file.  Included files *cannot*
; include files themselves.

[program:run]
command=gunicorn -w4 -b 0.0.0.0:5000 run:app    ; supervisor启动命令
directory=/home/myproject                           ; 项目的文件夹路径
startsecs=0                                     ; 启动时间
stopwaitsecs=0                                  ; 终止等待时间
autostart=false                                 ; 是否自动启动
autorestart=false                               ; 是否自动重启
stdout_logfile=/home/myproject/web/log/gunicorn.log                           ; log 日志
stderr_logfile=/home/myproject/web/log/gunicorn.err                           ; 错误日志

[include]
files = /etc/supervisor/*.conf

基本使用命令：

supervisord -c supervisor.conf   # 通过配置文件启动supervisor
supervisorctl -c supervisor.conf status        # 察看supervisor的状态
supervisorctl -c supervisor.conf reload       # 重新载入 配置文件
supervisorctl -c supervisor.conf start [all]|[appname]     #启动指定/所有 supervisor管理的程序进程
supervisorctl -c supervisor.conf stop [all]|[appname]      #关闭指定/所有 supervisor管理的程序进程

启动项目：

# /root/super/bin/supervisord -c /etc/supervisord.conf
# supervisorctl
supervisor> start run #启动
supervisor> stop run #停止

配置和运行好supervisor之后，就可以退出virtulenv了

# deactivate 

安装nginx

以centos7为例：

# wget http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm
# yum install nginx-release-centos-7-0.el7.ngx.noarch.rpm
# yum install nginx

修改nginx配置/etc/nginx/conf.d/default.conf

server {
    listen       80;
    server_name  localhost; # 域名或IP
    location / {
        proxy_pass http://127.0.0.1:5000;
        proxy_redirect off;
        proxy_set_header Host $host:80;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

}

启动nginx

# /bin/systemctl start nginx.service # 启动nginx
# /bin/systemctl reload nginx.service #重新载入nginx配置
# /bin/systemctl restart nginx.service #重启nginx

参考

http://www.jianshu.com/p/be9dd421fb8d
http://www.cnblogs.com/shijingjing07/p/6024066.html
https://zhuanlan.zhihu.com/p/21262280