系統：Ubuntu 14.04 LTS

搭建python的運行環境：Nginx+Supervisor+Pypy+Virtualenv

軟件說明：

Nginx：通過upstream進行負載均衡

Supervisor：管理python進程

Pypy：用Python實現的Python解釋器PyPy is a fast, compliant alternative implementation of the Python language (2.7.6 and 3.2.3).

Virtualenv：搭建python虛擬環境

環境搭建：

安裝pypy：

Shell

sudo apt-get install pypy

1sudoapt-getinstallpypy

安裝virtualenv：

Shell

sudo apt-get install virtualenv

1sudoapt-getinstallvirtualenv

創建pypy+virtualenv虛擬環境：

Shell

#在當前目錄下創建PYPYENV

virtualenv -p /usr/bin/pypy PYPYENV

cd PYPYENV

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3#在當前目錄下創建PYPYENV

virtualenv-p/usr/bin/pypyPYPYENV

cdPYPYENV

導出原有 python 安裝的包列表:

Shell

pip freeze > list.txt

1pipfreeze>list.txt

進入virtualenv(PYPYENV)虛擬環境，同時導入list.txt列表：

Shell

source bin/activate

pip install -r list.txt

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2sourcebin/activate

pipinstall-rlist.txt

退出virtualenv虛擬環境：

Shell

deactivate

1deactivate

安裝 supervisor：

Shell

sudo apt-get install supervisor

1sudoapt-getinstallsupervisor

配置supervisor：

Shell

vim /etc/supervisor/supervisord.conf

1vim/etc/supervisor/supervisord.conf

添加

Shell

[inclue]

files=conf.d/*.conf

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2[inclue]

files=conf.d/*.conf

Shell

vim /etc/supervisor/conf.d/xxxx.conf

1vim/etc/supervisor/conf.d/xxxx.conf

代碼示例：

Shell

[program:blog]

command= runinenv.sh /pathaa/PYPYENV python /pathbb/xxx.py --port=80%(process_num)02d --log_file_prefix=/tmp/xxx-80%(process_num)02d.log

directory=/path

numprocs=4

process_name=%(program_name)s-80%(process_num)02d

autostart=true

autorestart=true

startsecs=3

stdout_logfile=/tmp/xxx.log

stderr_logfile=/tmp/xxxerror.log

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10[program:blog]

command=runinenv.sh/pathaa/PYPYENVpython/pathbb/xxx.py--port=80%(process_num)02d--log_file_prefix=/tmp/xxx-80%(process_num)02d.log

directory=/path

numprocs=4

process_name=%(program_name)s-80%(process_num)02d

autostart=true

autorestart=true

startsecs=3

stdout_logfile=/tmp/xxx.log

stderr_logfile=/tmp/xxxerror.log

runinenv.sh文件代碼示例：

Shell

#!/bin/bash

VENV=$1

if [ -z $VENV ]; then

echo "usage:runinenv [virtualenv_path] CMDS"

exit 1

fi

source ${VENV}/bin/activate

shift 1

echo "Executing $@ in ${VENV}"

exec "$@"

deactivate

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11#!/bin/bash

VENV=$1

if[-z$VENV];then

echo"usage:runinenv [virtualenv_path] CMDS"

exit1

fi

source${VENV}/bin/activate

shift1

echo"Executing $@ in ${VENV}"

exec"$@"

deactivate

supervisor管理

啟動：

Shell

sudo supervisord

1sudosupervisord

管理：

Shell

sudo supervisorctl

supervisord > reload

supervisord > status

supervisord > start

supervisord > stop

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6sudosupervisorctl

supervisord>reload

supervisord>status

supervisord>start

supervisord>stop

安裝Nginx：

Shell

sudo apt-get install nginx sudo /etc/init.d/nginx start

1sudoapt-getinstallnginxsudo/etc/init.d/nginxstart

瀏覽器訪問localhost即可看到Welcome to Nginx。

修改nginx配置：

Shell

vim /etc/nginx/sites-available/default

1vim/etc/nginx/sites-available/default

Shell

#在http中添加

upstream xxxx{

ip_hash;

server localhost:8001;

server localhost:8002;

server localhost:8003;

server localhost:8004;

……

}

#在server中修改：

location / {

proxy_pass http://xxxx

}

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14#在http中添加

upstreamxxxx{

ip_hash;

serverlocalhost:8001;

serverlocalhost:8002;

serverlocalhost:8003;

serverlocalhost:8004;

……

}

#在server中修改：

location/{

proxy_passhttp://xxxx

}

nginx壓力測試：

Shell

sudo apt-get install apache2-utils

# 并發數1000，總請求數10000

ab -c 1000 -n 10000 http://localhost/

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4sudoapt-getinstallapache2-utils

# 并發數1000，總請求數10000

ab-c1000-n10000http://localhost/

參考資料：

1 、使用 ab 進行測試 nginx 時，結果發現 Failed requests 很大，查看日志( /var/log/nginx/error.log )，發現錯誤是: socket() failed (24: Too many open files)，參考這里；

2、Nginx中的一些優化