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]

[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 "$@"; }
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]

<div>
<pre># 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</pre>
</div>

[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]