- While Plesk is applying new DNS records the following can be found in
systemd: Reloading BIND Domain Name Server.
named: received control channel command 'reload'
named: loading configuration from '/etc/named.conf'
systemd: bind9.service: Reload operation timed out. Killing reload process.
systemd: Reload failed for BIND Domain Name Server.
- Then all websites stopped resolving:
# dig @localhost example.com
; <<>> DiG 9.10.3-P4-Ubuntu <<>> @localhost example.com
; (1 server found)
;; global options: +cmd
;; connection timed out; no servers could be reached
While signing DNS zone with DNSSEC - BIND generates signatures and can hang on /dev/random due to lack of entropy.
1) Specify random-device
/etc/named.conf in 'options' section:
2) Restart the service:
# service bind9 restart
# service named-chroot restart
3) Or install
haveged package which would increase entropy on the server.