I recently mounted a new partition and moved /home and /var/lib/mysql to the new drive and did a symlink to them.
Now I've noticed that the entropy (using munin) has dropped from around 3000 to around 100-200. Could the data mount and move caused this?
I use this as an apache webserver to host a site facing public users and I've noticed an increase in load as well (could the low entropy caused this?)
If this is a big issue, I would like to figure out a way to solve the low-entropy problem.
I've read that I can add entropy by using rng-tools and switching to using urandom. People say this is not a good approach for security-conscious systems. But would this be fine for a web app? How much less secure would that make my web app (we utilize encryption (hashing) for things like passwords and confirmation links and such, but I'm not sure how much of that falls under as "security-conscious")
I'm using a cloud instance CentOS 5 (virtual machine).