Basics What are the different service group types ? Service groups can be one of the 3 type : 1. Failover – Service group runs on one system at a time. 2. Parallel – Service group runs on multiple systems simultaneously. 3. Hybrid – Used in replicated data clusters (disaster recovery setups). SG behaves as […]
Archives for March 2014
How to enable/disable SELinux Modes in RHEL/CentOS
SELinux modes SELinux gives that extra layer of security to the resources in the system. It provides the MAC (mandatory access control) as contrary to the DAC (Discretionary access control). Before we dive into setting the SELinux modes, let us see what are the different SELinux modes of operation and how do they work. SELinux […]
UNIX/Linux : Access control lists (ACLs) basics
Why we need ACLs ? Every file on any UNIX file system will have an owner/group and set of permissions. Imagine a case when multiple users need access to the same file and the users are from different groups. The file access control lists (FACLs) or simply ACLs are the list of additional users/groups and […]