Example setup for Apache Site Mainten...

Example setup for Apache Site Maintenance pages for proxied applications

 

Create a directory in /etc/httpd/conf called scontrol owned by root and another subdirectory called control owned by the account apache runs as.

 

/etc/httpd/conf/scontrol/control

 

in /etc/httpd/conf/scontrol create the following files owned by root

 

myapp_inet_set_default.sh

#!/bin/sh

cd /etc/httpd/conf/scontrol

ln -sf control/myapp.default.conf myapp.conf

/etc/init.d/httpd reload

 

myapp_inet_set_offline.sh

 #!/bin/sh

cd /etc/httpd/conf/scontrol

ln -sf control/myapp.offline.conf myapp.conf

/etc/init.d/httpd reload

 

in the control subfolder create the following files owned by the account apache runs under

 

myapp.default.conf

RewriteRule /myapp$ /myapp/ [R,L]

<Location "/myapp/">

    ProxyPass http://myapp.sysxperts.com:8080/myapp/

    ProxyPassReverse http://myapp.sysxperts.com:8080/myapp/

    ProxyPassReverse /

</Location>

myapp.offline.conf

RewriteRule ^/myapp/? http://www.sysxperts.com/main/myappmaintenance.html [NC,R,L]

Create the myappmaintenance.html page and put it into the main subfolder that you created under your Document Root or anywhere you'd like to configure it to go provided you use an appropriate RewriteRule.

 

 

In the vhost configuration under /etc/httpd/conf/sites/www.sysxperts.com.conf find the Rewrite and Location entries for the app and replace them with:

 Include conf/scontrol/myapp.conf

 

Create a cron job under root to turn on site maintenance page at start  of maintenance and one to turn the app back on at end or manually run the scripts as necessary

 

28 19 * * * /etc/httpd/conf/scontrol/myapp_inet_set_offline.sh

0 0 * * * /etc/httpd/conf/scontrol/myapp_inet_set_default.sh

  

This example turns on site maintenance page at 7:28PM and brings the app back online at midnight.