What is the hostid on my Red Hat Enterprise Linux system and how can I change it?

Release Found: Red Hat Enterprise Linux, all versions

Solution

The hostid of a system is an integer which can be considered reasonably unique among Linux hosts. The value is stored in the file /etc/hostid, and may be changed by the superuser. For example, the following python snippet will set the hostid to an arbitrary value, 0x210a2501...