2.5. Creating Environment Variables on Node Hosts

Procedure 2.4. Creating Environment Variables on a Node Host

1. Create a new file in the /etc/openshift/env directory on the node hosts that you want the environment variable set. For example, to allow applications to use an external database, set an external database environment variable EXT_DB_CONNECTION_URL with the value of mysql://host.example.com:3306/

   # echo mysql://host.example.com:3306/ > /etc/openshift/env/EXT_DB_CONNECTION_URLecho mysql://host.example.com:3306/ > /etc/openshift/env/EXT_DB_CONNECTION_URLecho mysql://host.example.com:3306/ > /etc/openshift/env/EXT_DB_CONNECTION_URLecho mysql://host.example.com:3306/ > /etc/openshift/env/EXT_DB_CONNECTION_URL

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2. To make the changes take effect for existing applications, ask affected application owners to restart their applications by running the following commands:

   $ rhc app stop -a appnamerhc app stop -a appname
   $ rhc app start -a appnamerhc app start -a appname

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   Alternatively, you can restart all gears on affected node hosts. The downtime caused by restarting all gears is minimal and around a few seconds.

   # oo-admin-ctl-gears restartall

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