What does "no source of entropy found" or "could not open entropy source foo" mean?
- Updated on 10 Oct 2018
- 1 minute to read
The server requires a source of entropy -- i.e., random numbers -- to perform certain cryptographic operations for DNSSEC or to generate keys for TSIG. These messages indicate that you have no
source of entropy. On systems that use
/dev/random or an equivalent device to provide access to the kernel's random number generator, that will be used by default. A source of entropy can also be defined using the
random-device option in named.conf, or specified at compile time using