open, edit, save and share your document or file on owncloud and monitor your instance with netdata
After installing, login your owncloud -> click market > search "onlyoffice" > install plugin > setting > additional > only office & put your ip(same with yourowncloudserver):8080 > save > enjoy
Using curl
run --> curl -sL https://raw.githubusercontent.com/Adepurnomo/Owncloud_only_office_document_server_Installer_CentOS_7/master/owncloud-installer.sh | sh