This post includes how to install nginx, uwsgi, flask and python environment.
Some Tools Installation
- yum -y groupinstall "Development tools"
- yum -y install gcc ncurses-devel zlib-devel bzip2-devel openssl-devel make
Python Installation
- cd /var/tmp
- wget http://www.python.org/ftp/python/2.7.5/Python-2.7.5.tgz
- tar zxvf Python-2.7.5taz
- cd Python-2.7.5
- ./configure --with-threads --enable-shared
- make && make altinstall
Python check (check your python installation)
- cd /var/tmp
- python2.7 (after this command if you enter the python console that means your python installation is successful, otherwise maybe you will encounter "python2.7: error while loading shared libraries: libpython2.7.so.1.0: cannot open shared object file: No such file or directory")
- vi /etc/ld.so.conf (add /usr/local/lib into this document)
- /sbin/ldconfig
- /sbin/ldconfig -v
- python2.7 (double check again, this time you can enter the python console)
Pip Installation
- cd /var/tmp
- wget http://python-distribute.org/distribute_setup.py
- python2.7 distribute_setup.py
- wget https://raw.github.com/pypa/pip/master/contrib/get-pip.py
- python2.7 get-pip.py
Virtualenvwrapper Installation
- pip-2.7 install virtualenvwrapper
Create User for nginx
- groupadd nginx
- useradd -g nginx nginx
- passwd nginx
- su nginx
- vi ~/.bashrc (change to nginx user and add the following two lines)
export VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python2.7
source /usr/local/bin/virtualenvwrapper.sh 2 >/dev/null
- source ~/.bashrc #reload this file
Create Virtualenv and uwsgi installation
- su nginx
- mkvirtualenv -p /usr/local/bin/python2.7 env27
- workon env27 ##change to env27
- pip-2.7 install uwsgi # install uwsgi
Nginx Installation
- su root
- yum -y install pcre-devel
- cd /var/tmp
- wget http://nginx.org/download/nginx-1.2.3.tar.gz
- su nginx # change to nginx
- tar xvfz nginx-1.2.3.tar.gz
- cd nginx-1.2.3
- ./configure --user=nginx --group=nginx --prefix=/home/nginx/SAgent --with-http_ssl_module --with-http_gzip_static_module --with-http_stub_status_module
- make && make install
Create some folders for webapps:
- mkdir /home/nginx/SAgent/sites-available
- mkdir /home/nginx/SAgent/sites-enabled
- mkdir /home/nginx/SAgent/webapps
- mkdir /home/nginx/SAgent/uwsgi
- mkdir /home/nginx/SAgent/uwsgi/conf
- mkdir /home/nginx/SAgent/uwsgi/logs
- mkdir /home/nginx/SAgent/uwsgi/run/
Create nginx as service:
- sudo vi /etc/init.d/nginx (put the following content in this new file)
#!/bin/sh
#
# nginx - this script starts and stops the nginx daemin
#
# chkconfig: 2345 80 25
# description: Startup script for nginx webserver. Place in /etc/init.d and
# For CentOS/Redhat run: 'chkconfig --add nginx'
# processname: nginx
# config: /home/nginx/SAgent/conf/nginx.conf
# pidfile: /home/nginx/SAgent/logs/nginx.pid
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0
nginx="/home/nginx/SAgent/sbin/nginx"
prog=$(basename $nginx)
NGINX_CONF_FILE="/home/nginx/SAgent/conf/nginx.conf"
lockfile=/var/lock/subsys/nginx
start() {
[ -x $nginx ] || exit 5
[ -f $NGINX_CONF_FILE ] || exit 6
echo -n $"Starting $prog: "
daemon $nginx -c $NGINX_CONF_FILE
retval=$?
echo
[ $retval -eq 0 ] && touch $lockfile
return $retval
}
stop() {
echo -n $"Stopping $prog: "
killproc $prog -QUIT
retval=$?
echo
[ $retval -eq 0 ] && rm -f $lockfile
return $retval
}
restart() {
configtest || return $?
stop
sleep 1
start
}
reload() {
configtest || return $?
echo -n $"Reloading $prog: "
killproc $nginx -HUP
RETVAL=$?
echo
}
force_reload() {
restart
}
configtest() {
$nginx -t -c $NGINX_CONF_FILE
}
rh_status() {
status $prog
}
rh_status_q() {
rh_status >/dev/null 2>&1
}
case "$1" in
start)
rh_status_q && exit 0
$1
;;
stop)
rh_status_q || exit 0
$1
;;
restart|configtest)
$1
;;
reload)
rh_status_q || exit 7
$1
;;
force-reload)
force_reload
;;
status)
rh_status
;;
condrestart|try-restart)
rh_status_q || exit 0
;;
*)
echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|configtest}"
exit 2
esac
- sudo chmod +x /etc/init.d/nginx
- sudo /sbin/chkconfig nginx on
- sudo /sbin/chkconfig --list nginx # check
Create uwsgi as service:
- sudo vi /etc/init.d/uwsgi # put the following content in this new file
#!/bin/sh
#
# uwsgi - This script starts and stops all configured uwsgi applications
#
# chkconfig: 2345 80 25
# description: uWSGI is a program to run applications adhering to the
# Web Server Gateway Interface.
# processname: uwsgi
# config: /etc/sysconfig/uwsgi
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0
# initialize python virtualenv
VIRT_ENV=env27 #env33 #env27 #env3.21
PY_VER=2.7 #3.3 #2.7 #3.2
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
WORKON_HOME=/home/nginx/.virtualenvs
VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python$PY_VER
. /usr/local/bin/virtualenvwrapper.sh 2> /dev/null
workon $VIRT_ENV
uwsgi=`which uwsgi`
prog=$(basename "$uwsgi")
UWSGI_ROOT="/home/nginx/SAgent/uwsgi"
UWSGI_CONF_DIR="$UWSGI_ROOT/conf"
UWSGI_LOG_FILE="$UWSGI_ROOT/uwsgi.log"
UWSGI_PID_FILE="/var/run/uwsgi.pid"
# force to all vassals
export UWSGI_VASSAL_HOME="$WORKON_HOME/$VIRT_ENV"
UWSGI_ARGS="--emperor $UWSGI_CONF_DIR --binary-path $uwsgi"
start() {
[ -x $uwsgi ] || exit 5
[ -d $UWSGI_CONF_DIR ] || exit 6
echo -n $"Starting $prog: "
daemon --pidfile="$UWSGI_PID_FILE" $uwsgi $UWSGI_ARGS --pidfile $UWSGI_PID_FILE --daemonize $UWSGI_LOG_FILE
retval=$?
echo
return $retval
}
stop() {
echo -n $"Stopping $prog: "
killproc -p "$UWSGI_PID_FILE" $prog
retval=$?
echo
return $retval
}
restart() {
stop
sleep 1
start
}
reload() {
echo -n $"Reloading $prog: "
killproc -p "$UWSGI_PID_FILE" "$prog" -HUP
retval=$?
echo
return $retval
}
force_reload() {
restart
}
rh_status() {
status -p "$UWSGI_PID_FILE" "$prog"
}
rh_status_q() {
rh_status >/dev/null 2>&1
}
case "$1" in
start)
rh_status_q && exit 0
$1
;;
stop)
rh_status_q || exit 0
$1
;;
restart)
$1
;;
reload)
rh_status_q || exit 7
$1
;;
force-reload)
force_reload
;;
status)
rh_status
;;
*)
echo $"Usage: $0 {start|stop|status|restart|reload|force-reload}"
exit 2
esac
- sudo chmod +x /etc/init.d/uwsgi
- sudo /sbin/chkconfig uwsgi on
- sudo /sbin/chkconfig --list uwsgi # check
Flask webframework installation
- cd /var/tmp
- wget http://pypi.python.org/packages/source/F/Flask/Flask-0.10.tar.gz
- tar zxvf Flask-0.10.tar.gz
- cd Flask-0.10
- python2.7 setup.py install
Create demo application
- mkdir /home/nginx/DemoAgent/sites-available/demo
- mkdir /home/nginx/DemoAgent/webapps/demo
- vim /home/nginx/DemoAgent/webapps/demo/demo.py # add the following python code in demo.py
from flask import Flask
app = Flask(__name__)
@app.route("/")
def hello():
return "Hello World!"
if __name__ == "__main__":
app.run()
- python2.7 demo.py # check 127.0.0.1:5000, you can see the hello world.
Some configurations for nginx and uwsgi
- ln -s /home/nginx/DemoAgent/sites-available/demo /home/nginx/DemoAgent/sites-enabled/demo # create symbolic link
- vi /home/nginx/DemoAgent/uwsgi/conf/demo.ini # the ini file must has the same name as webapps folder. e.g., demo, add the following content into demo.ini
[uwsgi]
processes = 1
master = true
limit-as = 1024
reload-on-as = 512
reload-on-rss = 256
memory-report = true
socket = /home/nginx/DemoAgent/uwsgi/run/%n.sock
logto = /home/nginx/DemoAgent/uwsgi/logs/%n.log
manage-script-name = 1
auto-procname = true
enable-threads = 5
procanme-prefix-spaced = %n
chdir = /home/nginx/DemoAgent/webapps/%n
mount = /%n=/home/nginx/DemoAgent/webapps/%n/demo.py
callable = app
- vim /home/nginx/DemoAgent/conf/nginx.conf # in {http{server}} section, modify location section content
location /demo {
set $app demo;
include uwsgi_params;
uwsgi_param SCRIPT_NAME "/${app}";
uwsgi_param UWSGI_SCRIPT index;
uwsgi_param UWSGI_MODULE index;
uwsgi_param UWSGI_PYHOME "${document_root}/${app}";
uwsgi_param UWSGI_CHDIR "${document_root}/${app}";
uwsgi_pass unix:/home/nginx/DemoAgent/uwsgi/run/${app}.sock;
}
- service nginx start
- service uwsgi start
URL: 127.0.0.1/demo # you can see the Hello World responded from demo.py
