Bad file descriptor error when running AutoSSL

Operating System & Version
CLOUDLINUX 6.10
cPanel & WHM Version
96.0.14

sneader

Well-Known Member
Aug 21, 2003
1,195
63
178
La Crosse, WI
cPanel Access Level
Root Administrator
At the end of every AutoSSL run, we see the following error logged:

The system finished checking 340 users.
Emptying Let’s Encrypt’s DCV (Domain Control Validation) cache …
[1627840001] libunbound[3341577:0] error: cannot fcntl F_GETFL: Bad file descriptor
[1627840001] libunbound[3341577:0] error: cannot fcntl F_SETFL: Bad file descriptor


Any idea what's going on here and how to fix it?

- Scott
 

ankeshanand

Well-Known Member
Mar 29, 2021
194
58
103
India
cPanel Access Level
Root Administrator
libunbound is an implementation of a DNS resolver, that does caching and DNSSEC validation. Mainly, These occur due to some sort of Network Problem. Bad File Descriptor problems arise due to LetsEncrypt requiring a higher number of file descriptors in some cases or /tmp Folder having wrong Permissions.
Can you share your OS Specs? or Maybe Open a Ticket with cPanel directly so that they may look into it.