Cloud Hostpro — Запуск нескольких ruby микро-приложений на одном веб-сервере

[sourcecode language=»plain»]$ git submodule add git clone [email protected]:stanisla/tarot.git tarot
$ git submodule add git clone [email protected]:stanisla/blog.git blog[/sourcecode]

[sourcecode language=»plain»]gem «rack-stack», :git => «https://github.com/remi/rack-stack.git»
gem ‘puma’

Dir.glob(File.join(File.dirname(__FILE__), ‘*’, «Gemfile»)) do |gemfile|
eval(IO.read(gemfile), binding)
end[/sourcecode]

bundle

[sourcecode language=»plain»]require ‘rack-stack’

# Требуем мини-приложения:

# Sinatra-приложение
require ‘./tarot/tarot’
# Стандартная строка загрузки Rails-приложения с классической структурой
require ‘./blog/config/environment’

# Задаём хосты для миниприложений
tarot_host = ENV[‘RACK_ENV’] == ‘production’ ? ‘tarot.example.ru’ : ‘tarot.localhost’
blog_host = ENV[‘RACK_ENV’] == ‘production’ ? ‘blog.example.ru’ : ‘blog.localhost’

run(RackStack.app do
run TarotApp, :when => { :host => tarot_host }
run Blog::Application, :when => { :host => blog_host }
end)[/sourcecode]

[sourcecode language=»plain»]require ‘sinatra’

# …

class TarotApp < Sinatra::Base
# Тут про расклады Taрo
end[/sourcecode]

[sourcecode language=»plain»]# micro-apps/puma/config.rb
environment «production»
pidfile «./puma/puma.pid»
state_path «./puma/puma.state»
bind «unix://./puma/puma.sock»[/sourcecode]

[sourcecode language=»bash»]#!/bin/sh
#
# puma — this script starts and stops the puma daemon
#
# chkconfig: — 85 15
# description: Description \
# goes here…
# processname: puma
# config: /etc/puma.conf
# pidfile: /home/stanislaw/apps/micro-apps/puma/puma.pid

# Author: Darío Javier Cravero <[email protected]>
#
# Do NOT «set -e»

# Original script https://github.com/puma/puma/blob/master/tools/jungle/puma
# It was modified here by Stanislaw Pankevich <[email protected]>
# to run on CentOS 5.5 boxes.
# Script works perfectly on CentOS 5: script uses its native daemon().
# Puma is being stopped/restarted by sending signals, control app is not used.

# Source function library.
. /etc/rc.d/init.d/functions

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/usr/local/bin:/usr/local/sbin/:/sbin:/usr/sbin:/bin:/usr/bin
DESC=»Puma rack web server»
NAME=puma
DAEMON=$NAME
SCRIPTNAME=/etc/init.d/$NAME
CONFIG=/etc/puma.conf
JUNGLE=`cat $CONFIG`
RUNPUMA=/usr/local/bin/run-puma

# Skipping the following non-CentOS string
# Load the VERBOSE setting and other rcS variables
# . /lib/init/vars.sh

# CentOS does not have these functions natively
log_daemon_msg() { echo «[email protected]»; }
log_end_msg() { [ $1 -eq 0 ] && RES=OK; logger ${RES:=FAIL}; }

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions

#
# Function that performs a clean up of puma.* files
#
cleanup() {
echo «Cleaning up puma temporary files…»
# echo $1;
PIDFILE=$1/puma/puma.pid
STATEFILE=$1/puma/puma.state
SOCKFILE=$1/puma/puma.sock
rm -f $PIDFILE $STATEFILE $SOCKFILE
}

#
# Function that starts the jungle
#
do_start() {
log_daemon_msg «=> Running the jungle…»
for i in $JUNGLE; do
dir=`echo $i | cut -d , -f 1`
user=`echo $i | cut -d , -f 2`
config_file=`echo $i | cut -d , -f 3`
if [ «$config_file» = «» ]; then
config_file=»$dir/puma/config.rb»
fi
log_file=`echo $i | cut -d , -f 4`
if [ «$log_file» = «» ]; then
log_file=»$dir/puma/puma.log»
fi
do_start_one $dir $user $config_file $log_file
done
}

do_start_one() {
PIDFILE=$1/puma/puma.pid
if [ -e $PIDFILE ]; then
PID=`cat $PIDFILE`
# If the puma isn’t running, run it, otherwise restart it.
if [ «`ps -A -o pid= | grep -c $PID`» -eq 0 ]; then
do_start_one_do $1 $2 $3 $4
else
do_restart_one $1
fi
else
do_start_one_do $1 $2 $3 $4
fi
}

do_start_one_do() {
log_daemon_msg «—> Woke up puma $1»
log_daemon_msg «user $2»
log_daemon_msg «log to $4»
cleanup $1;
daemon —user $2 $RUNPUMA $1 $3 $4
}

#
# Function that stops the jungle
#
do_stop() {
log_daemon_msg «=> Putting all the beasts to bed…»
for i in $JUNGLE; do
dir=`echo $i | cut -d , -f 1`
do_stop_one $dir
done
}
#
# Function that stops the daemon/service
#
do_stop_one() {
log_daemon_msg «—> Stopping $1»
PIDFILE=$1/puma/puma.pid
STATEFILE=$1/puma/puma.state

echo $PIDFILE

if [ -e $PIDFILE ]; then
PID=`cat $PIDFILE`
echo «Pid:»
echo $PID
if [ «`ps -A -o pid= | grep -c $PID`» -eq 0 ]; then
log_daemon_msg «—> Puma $1 isn’t running.»
else
log_daemon_msg «—> About to kill PID `cat $PIDFILE`»
# pumactl —state $STATEFILE stop
# Many daemons don’t delete their pidfiles when they exit.
kill -9 $PID
fi
cleanup $1
else
log_daemon_msg «—> No puma here…»
fi
return 0
}

#
# Function that restarts the jungle
#
do_restart() {
for i in $JUNGLE; do
dir=`echo $i | cut -d , -f 1`
do_restart_one $dir
done
}

#
# Function that sends a SIGUSR2 to the daemon/service
#
do_restart_one() {
PIDFILE=$1/puma/puma.pid
i=`grep $1 $CONFIG`
dir=`echo $i | cut -d , -f 1`

if [ -e $PIDFILE ]; then
log_daemon_msg «—> About to restart puma $1»
# pumactl —state $dir/tmp/puma/state restart
kill -s USR2 `cat $PIDFILE`
# TODO Check if process exist
else
log_daemon_msg «—> Your puma was never playing… Let’s get it out there first»
user=`echo $i | cut -d , -f 2`
config_file=`echo $i | cut -d , -f 3`
if [ «$config_file» = «» ]; then
config_file=»$dir/config/puma.rb»
fi
log_file=`echo $i | cut -d , -f 4`
if [ «$log_file» = «» ]; then
log_file=»$dir/log/puma.log»
fi
do_start_one $dir $user $config_file $log_file
fi
return 0
}

#
# Function that statuss then jungle
#
do_status() {
for i in $JUNGLE; do
dir=`echo $i | cut -d , -f 1`
do_status_one $dir
done
}

#
# Function that sends a SIGUSR2 to the daemon/service
#
do_status_one() {
PIDFILE=$1/tmp/puma/pid
i=`grep $1 $CONFIG`
dir=`echo $i | cut -d , -f 1`

if [ -e $PIDFILE ]; then
log_daemon_msg «—> About to status puma $1»
pumactl —state $dir/tmp/puma/state stats
# kill -s USR2 `cat $PIDFILE`
# TODO Check if process exist
else
log_daemon_msg «—> $1 isn’t there :(…»
fi

return 0
}

do_add() {
str=»»
# App’s directory
if [ -d «$1» ]; then
if [ «`grep -c «^$1″ $CONFIG`» -eq 0 ]; then
str=$1
else
echo «The app is already being managed. Remove it if you want to update its config.»
exit 1
fi
else
echo «The directory $1 doesn’t exist.»
exit 1
fi
# User to run it as
if [ «`grep -c «^$2:» /etc/passwd`» -eq 0 ]; then
echo «The user $2 doesn’t exist.»
exit 1
else
str=»$str,$2″
fi
# Config file
if [ «$3» != «» ]; then
if [ -e $3 ]; then
str=»$str,$3″
else
echo «The config file $3 doesn’t exist.»
exit 1
fi
fi
# Log file
if [ «$4» != «» ]; then
str=»$str,$4″
fi

# Add it to the jungle
echo $str >> $CONFIG
log_daemon_msg «Added a Puma to the jungle: $str. You still have to start it though.»
}

do_remove() {
if [ «`grep -c «^$1″ $CONFIG`» -eq 0 ]; then
echo «There’s no app $1 to remove.»
else
# Stop it first.
do_stop_one $1
# Remove it from the config.
sed -i «\\:^$1:d» $CONFIG
log_daemon_msg «Removed a Puma from the jungle: $1.»
fi
}

case «$1» in
start)
[ «$VERBOSE» != no ] && log_daemon_msg «Starting $DESC» «$NAME»
if [ «$#» -eq 1 ]; then
do_start
else
i=`grep $2 $CONFIG`
dir=`echo $i | cut -d , -f 1`
user=`echo $i | cut -d , -f 2`
config_file=`echo $i | cut -d , -f 3`
if [ «$config_file» = «» ]; then
config_file=»$dir/config/puma.rb»
fi
log_file=`echo $i | cut -d , -f 4`
if [ «$log_file» = «» ]; then
log_file=»$dir/log/puma.log»
fi
do_start_one $dir $user $config_file $log_file
fi
case «$?» in
0|1) [ «$VERBOSE» != no ] && log_end_msg 0 ;;
2) [ «$VERBOSE» != no ] && log_end_msg 1 ;;
esac
;;
stop)
[ «$VERBOSE» != no ] && log_daemon_msg «Stopping $DESC» «$NAME»
if [ «$#» -eq 1 ]; then
do_stop
else
i=`grep $2 $CONFIG`
dir=`echo $i | cut -d , -f 1`
do_stop_one $dir
fi
case «$?» in
0|1) [ «$VERBOSE» != no ] && log_end_msg 0 ;;
2) [ «$VERBOSE» != no ] && log_end_msg 1 ;;
esac
;;
status)
# TODO Implement.
log_daemon_msg «Status $DESC» «$NAME»
if [ «$#» -eq 1 ]; then
do_status
else
i=`grep $2 $CONFIG`
dir=`echo $i | cut -d , -f 1`
do_status_one $dir
fi
case «$?» in
0|1) [ «$VERBOSE» != no ] && log_end_msg 0 ;;
2) [ «$VERBOSE» != no ] && log_end_msg 1 ;;
esac
;;
restart)
log_daemon_msg «Restarting $DESC» «$NAME»
if [ «$#» -eq 1 ]; then
do_restart
else
i=`grep $2 $CONFIG`
dir=`echo $i | cut -d , -f 1`
do_restart_one $dir
fi
case «$?» in
0|1) [ «$VERBOSE» != no ] && log_end_msg 0 ;;
2) [ «$VERBOSE» != no ] && log_end_msg 1 ;;
esac
;;
add)
if [ «$#» -lt 3 ]; then
echo «Please, specifiy the app’s directory and the user that will run it at least.»
echo » Usage: $SCRIPTNAME add /path/to/app user /path/to/app/config/puma.rb /path/to/app/config/log/puma.log»
echo » config and log are optionals.»
exit 1
else
do_add $2 $3 $4 $5
fi
case «$?» in
0|1) [ «$VERBOSE» != no ] && log_end_msg 0 ;;
2) [ «$VERBOSE» != no ] && log_end_msg 1 ;;
esac
;;
remove)
if [ «$#» -lt 2 ]; then
echo «Please, specifiy the app’s directory to remove.»
exit 1
else
do_remove $2
fi
case «$?» in
0|1) [ «$VERBOSE» != no ] && log_end_msg 0 ;;
2) [ «$VERBOSE» != no ] && log_end_msg 1 ;;
esac
;;
*)
echo «Usage:» >&2
echo » Run the jungle: $SCRIPTNAME {start|stop|status|restart}» >&2
echo » Add a Puma: $SCRIPTNAME add /path/to/app user /path/to/app/config/puma.rb /path/to/app/config/log/puma.log»
echo » config and log are optionals.»
echo » Remove a Puma: $SCRIPTNAME remove /path/to/app»
echo » On a Puma: $SCRIPTNAME {start|stop|status|restart} PUMA-NAME» >&2
exit 3
;;
esac
:[/sourcecode]

[sourcecode language=»bash»]#!/bin/bash
app=$1; config=$2; log=$3;

# We are using local RVM-based ruby environment. We need to source it:
source ~/.bash_profile

cd $app && exec bundle exec puma -C $config 2>&1 >> $log &

exit 0[/sourcecode]

/home/stanislaw/apps/micro-apps,stanislaw,/home/stanislaw/apps/micro-apps/puma/config.rb,/home/stanislaw/apps/micro-apps/puma/puma.log

# https://github.com/puma/puma/tree/master/tools/jungle
# Copy the init script to services directory 
sudo cp puma /etc/init.d
sudo chmod +x /etc/init.d/puma

# Make it start at boot time. 
/sbin/chkconfig --add /etc/init.d/puma 
/sbin/chkconfig --level 3 puma on

# Copy the Puma runner to an accessible location
sudo cp run-puma /usr/local/bin
sudo chmod +x /usr/local/bin/run-puma

[sourcecode language=»plain»] # …

upstream micro-apps_server {
server unix:/home/stanislaw/apps/micro-apps/puma/puma.sock
fail_timeout=0;
}

# …

# Директива для хоста tarot.example.ru
server {
listen 80;
client_max_body_size 4G;

server_name tarot.example.ru;

# location /robots.txt { alias /usr/local/etc/nginx/robots_disallow.txt; }

location ~ ^/assets/ {
expires 1y;
add_header Cache-Control public;
add_header Last-Modified «»;
add_header ETag «»;
break;
}

keepalive_timeout 5;

# path for static files
root /home/stanislaw/apps/micro-apps/tarot/public;

try_files $uri/index.html $uri.html $uri @app;

location @app {
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_redirect off;
proxy_pass http://micro-apps_server;
}

# Rails error pages
error_page 500 502 503 504 /500.html;
location = /500.html {
root /home/stanislaw/apps/micro-apps/tarot/public;
}
}

# Директива для хоста blog.example.ru
server {
listen 80;
client_max_body_size 4G;

server_name blog.example.ru;

# location /robots.txt { alias /usr/local/etc/nginx/robots_disallow.txt; }

location ~ ^/assets/ {
expires 1y;
add_header Cache-Control public;
add_header Last-Modified «»;
add_header ETag «»;
break;
}

keepalive_timeout 5;

# path for static files
root /home/stanislaw/apps/micro-apps/blog/public;

try_files $uri/index.html $uri.html $uri @app;

location @app {
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_redirect off;
proxy_pass http://micro-apps_server;
}

# Rails error pages
error_page 500 502 503 504 /500.html;
location = /500.html {
root /home/stanislaw/apps/micro-apps/blog/public;
}
}[/sourcecode]

# От имени администратора
/etc/init.d/puma start
/etc/init.d/puma stop
/etc/init.d/puma restart

[[email protected] micro-apps]# ls -l
total 24
drwxr-xr-x 14 stanislaw users 4096 Sep  8 06:09 blog
-rw-r--r--  1 stanislaw users  287 Sep  8 02:08 config.ru
-rw-r--r--  1 stanislaw users  191 Sep  8 01:59 Gemfile
-rw-r--r--  1 stanislaw users 4030 Sep  8 04:41 Gemfile.lock
drwxr-xr-x 14 stanislaw users 4096 Sep  8 06:06 tarot
drwxr-xr-x  2 stanislaw users 4096 Sep  8 14:00 puma

[[email protected] micro-apps]# ls -l puma/
total 28
-rw-r--r-- 1 stanislaw users   113 Sep  8 08:44 config.rb
-rw-r--r-- 1 stanislaw users 15858 Sep  8 10:25 puma.log
-rw-r--r-- 1 stanislaw users     5 Sep  8 10:25 puma.pid
srwxrwxrwx 1 stanislaw users     0 Sep  8 10:10 puma.sock
-rw-r--r-- 1 stanislaw users   378 Sep  8 10:25 puma.state