SELinux Configuration

When you have SELinux enabled on your Linux distribution, you may run into permissions problems after a new Nextcloud installation, and see permission denied errors in your Nextcloud logs.

The following settings should work for most SELinux systems that use the default distro profiles. Run these commands as root, and remember to adjust the filepaths in these examples for your installation:

semanage fcontext -a -t httpd_sys_rw_content_t '/var/www/html/nextcloud/data'
restorecon '/var/www/html/nextcloud/data'
semanage fcontext -a -t httpd_sys_rw_content_t '/var/www/html/nextcloud/config'
restorecon '/var/www/html/nextcloud/config'
semanage fcontext -a -t httpd_sys_rw_content_t '/var/www/html/nextcloud/apps'
restorecon '/var/www/html/nextcloud/apps'

If you uninstall Nextcloud you need to remove the Nextcloud directory labels. To do this execute the following commands as root after uninstalling Nextcloud:

semanage fcontext -d -t httpd_sys_rw_content_t '/var/www/html/nextcloud/data'
restorecon '/var/www/html/nextcloud/data'
semanage fcontext -d -t httpd_sys_rw_content_t '/var/www/html/nextcloud/config'
restorecon '/var/www/html/nextcloud/config'
semanage fcontext -d -t httpd_sys_rw_content_t '/var/www/html/nextcloud/apps'
restorecon '/var/www/html/nextcloud/apps'

If you have customized SELinux policies and these examples do not work, you must give the HTTP server write access to these directories:

/var/www/html/nextcloud/data
/var/www/html/nextcloud/config
/var/www/html/nextcloud/apps

Allow access to a remote database

An additional setting is needed if your installation is connecting to a remote database:

setsebool -P httpd_can_network_connect_db on

Allow access to LDAP server

Use this setting to allow LDAP connections:

setsebool -P httpd_can_connect_ldap on

Allow access to remote network

Nextcloud requires access to remote networks for functions such as Server-to-Server sharing, external storages or the app store. To allow this access use the following setting:

setsebool -P httpd_can_network_connect on

Allow access to SMTP/sendmail

If you want to allow Nextcloud to send out e-mail notifications via sendmail you need to use the following setting:

setsebool -P httpd_can_sendmail on

Allow access to CIFS/SMB

If you have placed your datadir on a CIFS/SMB share use the following setting:

setsebool -P httpd_use_cifs on

Troubleshooting

For general Troubleshooting of SELinux and its profiles try to install the package setroubleshoot and run:

sealert -a /var/log/audit/audit.log > /path/to/mylogfile.txt

to get a report which helps you configuring your SELinux profiles.

All documentation licensed under the Creative Commons Attribution 3.0 Unported license.