ConoHa : memcachedインストールスクリプト

install.sh

#!/bin/bash

set -e
set -u

# must replace with your own configuration
WEB_SERVER_A_IP='your_ip_addr'
WEB_SERVER_B_IP='your_ip_addr'
MEMCACHED_SERVER_IP='your_ip_addr'

IS_MEMCACHED_SERVER='yes'

# Prerequisite
[[ ${IS_MEMCACHED_SERVER-} = 'yes' ]] \
    && yum -y install memcached
yum -y install \
    httpd php-pecl-memcached

# setting up PHP memcached
sed -i \
    -e 's|^\(session.save\)|;\1|' \
    /etc/php.ini

cat <<_EOF_ > /etc/php.d/mymemcached.ini
session.save_handler = memcached
session.save_path = "${MEMCACHED_SERVER_IP-}:11211"
_EOF_

# setting up Apache
sed -i \
    -e 's|^\(Listen\)|#\1|' \
    /etc/httpd/conf/httpd.conf
echo 'Listen 8080' > /etc/httpd/conf.d/port.conf
/bin/rm /etc/httpd/conf.d/welcome.conf
mv /var/www/html{,.old}
ln -s /mnt/conohaobj/myfuse /var/www/html

# sample script
cat <<'_EOF_' > /var/www/html/test.php
<?php  
session_start();
if ( ! isset($_SESSION['counter']) ) {
    $_SESSION['counter'] = 0;
}
$_SESSION['counter']++;
print(
    '<pre>'
    . 'This is your '
    . $_SESSION['counter']
    . "th visit.\n"
    . 'I am running @ '
    . $_SERVER['SERVER_ADDR']
);
_EOF_

# nginx
if [[ ${IS_MEMCACHED_SERVER-} = 'yes' ]]; then
    yum -y install nginx
    mv /etc/nginx/conf.d/default.conf{,.orig}
    cat <<_EOF_ > /etc/nginx/conf.d/proxy.conf
upstream app {
    server ${WEB_SERVER_A_IP-}:8080;
    server ${WEB_SERVER_B_IP-}:8080;
}
server {
    listen 80 default_server;
    server_name _;
    location / {
        proxy_pass http://app/;
    }
    proxy_set_header X-Real-IP          \$remote_addr;
    proxy_set_header X-Forwarded-For    \$proxy_add_x_forwarded_for;
    proxy_set_header X-Forwarded-Proto  \$scheme;
}
_EOF_
    chkconfig nginx on
    service nginx start
fi

# spawn services
if [[ ${IS_MEMCACHED_SERVER-} = 'yes' ]]; then
    chkconfig memcached on
    service memcached start
    iptables -I INPUT -p tcp --dport 11211 -j ACCEPT
fi

chkconfig httpd on
service httpd start
iptables -I INPUT -p tcp --dport http -j ACCEPT
iptables -I INPUT -p tcp --dport 8080 -j ACCEPT
service iptables save
service iptables reload