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nextcloud-docs/admin_manual/configuration_server/security_setup_warnings.rst
2015-05-01 14:48:45 -07:00

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======================
Warnings on Admin Page
======================
Your ownCloud server has a built-in configuration checker, and it reports its
findings at the top of your Admin page. These are some of the warnings you
might see, and what to do about them.
.. figure:: ../images/security-setup-warning-1.png
Cache Warnings
--------------
"No memory cache has been configured. To enhance your performance please
configure a memcache if available." PHP has three caching extentions: APCu,
OPCache, and Xcache. You will see this warning if you have no caches installed,
and you may see it if you have APCu < 4.0.6 installed; older versions are
disabled because of performance problems.
If you see "APCu below version 4.0.6 is installed. for stability and
performance reasons we recommend to update to a newer APCu version" then you
need to upgrade, or, if you're not using it, remove it.
It is not required to use any caches, but caches improve server performance. See
:doc:`performance_tuning` for more information on installing and using caches.
You are accessing this site via HTTP
------------------------------------
"You are accessing this site via HTTP. We strongly suggest you configure your
server to require using HTTPS instead." Please take this warning seriously;
using HTTPS is a fundamental security measure. You must configure your Web
server to support it, and then there are some settings in the **Security**
section of your ownCloud Admin page to enable. The following manual pages
describe how to enable HTTPS on the Apache and Nginx Web servers.
`Enabling SSL (on Apache)
<https://doc.owncloud.org/server/8.1/admin_manual/installation/
source_installation.html#enabling-ssl>`_
`Use HTTPS
<https://doc.owncloud.org/server/8.1/admin_manual/configuration_server/
harden_server.html#use-https>`_
`Nginx
Configuration <https://doc.owncloud.org/server/8.1/admin_manual/installation/
nginx_configuration.html>`_