Symptoms
-
The Extensions menu is not available and fails with:
external server error
-
The following error in logged to the file
/var/log/plesk/panel.log
:ERR [extension/catalog] Failed connect to ext.plesk.com:443; No route to host
-
A manual connection attempt to
ext.plesk.com
from CLI fails:# curl -vvv https://ext.plesk.com
* About to connect() to ext.plesk.com port 443 (#0)
* Trying 195.181.175.6...
* No route to host
* Failed connect to ext.plesk.com:443; No route to host
* Closing connection 0
curl: (7) Failed connect to ext.plesk.com:443; No route to host -
The host
ext.plesk.com
resolves a different IP address(s) from the one on thecurl
error above:# host ext.plesk.com
ext.plesk.com is an alias for 1648825949.rsc.cdn77.org.
1648825949.rsc.cdn77.org has address 89.187.164.8
Cause
A record in /etc/hosts
force the resolution of ext.plesk.com
to an old or wrong IP address.
Resolution
-
Connect to the server using SSH.
-
Edit the
/etc/hosts
file. -
Comment out the line(s) contaiting
ext.plesk.com
by adding a preceding#
at the beginning of it, e.g.:#195.181.175.6 ext.plesk.com