rhn-plugin: Network error: ECONNRESET

Issue

This error appears during the server registration/update:

# /usr/sbin/clnreg_ks --force
Server does not have active license yet. Trying to get one using IP licensing flow.
An error has occurred:
rhn-plugin: Network error: ECONNRESET
See /var/log/up2date for more information

Environment

• CloudLinux
• rhn-plugin

Solution

The reason for this error is some of the network/firewall settings blocking connectivity to CLN or problems in the operation of the services themselves that make it impossible to connect to them. You need to check the availability of these services. The following commands are useful for this purpose:

# ping xmlrpc.cln.cloudlinux.com
# ping cln.cloudlinux.com 

# telnet xmlrpc.cln.cloudlinux.com 443
# telnet cln.cloudlinux.com 80

# iptables -L |grep 443 
# csf -l | grep 443

Also, it is worth checking with traceroute, in case the connection is blocked by the ISP, for example:

# traceroute -4 xmlrpc.cln.cloudlinux.com
# traceroute -4 cln.cloudlinux.com

When the connection is re-established, re-execute the server registration:

# /usr/sbin/clnreg_ks --force

If the services are still unavailable, you will need to check the status of CloudLinux Network on our https://cloudlinux.statuspage.io/ or contact CloudLinux support.