ubuntu

Sometimes you may find the need to shutdown a site for any reason an a specific server, basically the server that is listening to the web, so of course you will always want to keep that site(s) up and running while you perform whatever is needed on it, let's call it, 'external server', on a different environment, 'internal server'.
To do so you need to use an apache module called mod_proxy which enables a web server act as a router of traffic to another server, a tunnel.

- Enable mod_proxy and mod_proxy_http mod_proxy_html on external server
- create a virtual host on internal server…
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Sometimes when updating or upgrading different packages on your Ubuntu specially kernel updates, Zend Server tends to break up and the whole packages system too, you usually get errors like "bad inconsistency" of package php-zend-server-ce-php-5.x and you are asked by the system to reinstall this package but that's also impossible due to the changes the update has performed.
In order to fix this issue try following the next steps:

    sudo /usr/local/zend/bin/zendctl.sh stop   => stop zend server service
    sudo rm -rfv /usr/local/zend/tmp/*     …
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