Zombie VMs - is this possible?

Discussions related to using VirtualBox on Linux hosts.
fth0
Volunteer
Posts: 5677
Joined: 14. Feb 2019, 03:06
Primary OS: Mac OS X other
VBox Version: PUEL
Guest OSses: Linux, Windows 10, ...
Location: Germany

Re: Zombie VMs - is this possible?

Post by fth0 »

Emma2 wrote:Is there any tool to "compare" two different Linux installations?
Yes. There are a lot of tools that can somehow compare something related, but they usually won't tell you what the differences mean.

For example, you could use meld to compare any files and folders. If you'd compare the complete filesystem of two hosts, it might tell you that a few hundred or a few thousand of the more than 300.000 existing files are different, but you'd naturally be overwhelmed if you'd try to understand all the differences.

On the other hand, if you explicitly wanted to compare your cron configuration, you'd first have to identify the corresponding files (e.g. by reading the corresponding Linux man pages), and then compare them (e.g. /etc/cron*, /var/spool/cron). Likewise, you could compare the whole contents of /etc to identify differences in (part of) the global configuration of the Linux hosts.

The general rule of thumb is that you first have to know how something is supposed to work, and then you can check where the reality deviates from the assumptions.

Personally, I would not suspect the CPU itself in this case BTW, but wouldn't exclude it either (kudos to Sherlock Holmes ;)). I'm curious what we'll find out ...
Post Reply