Resolved Couldn't resolve host 'autoinstall.plesk.com'

[wmgilligan27]

Yesterday I realized our server was not forwarding emails. Turned out we were missing sendmail.postfix ... which was there previously...

Today I logged int to the admin and got this message:
Failed to update Plesk. To solve this problem, you can send the update log to Odin support. View the update logs (Sept 12, 2016). View the update logs (Sept 13, 2016). Copy the logs to your computer before you close this message. To close this message, click here.

I tried to do a manual update, and got this:
Failed to read product information from the file : Can't process products.inf3: Failed to download the package http://autoinstall.plesk.com/products.inf3:
Couldn't resolve host 'autoinstall.plesk.com'

Can't process versions.inf3: Failed to download the package http://autoinstall.plesk.com/versions.inf3:
Couldn't resolve host 'autoinstall.plesk.com'

I Googled all over, and completed this:
https://kb.plesk.com/en/121240

Still it fails.. here is the log:
Execution failed.
Command: autoinstaller
Arguments: Array
(
[0] => --select-product-id
[1] => plesk
[2] => --select-release-current
[3] => --upgrade-installed-components
)

Details: Doing restart of Plesk Installer...
File downloading products.inf3: Error: Couldn't resolve host 'autoinstall.plesk.com', retry...
Error: Couldn't resolve host 'autoinstall.plesk.com', retry...
Error: Couldn't resolve host 'autoinstall.plesk.com', retry...
File downloading versions.inf3: Error: Couldn't resolve host 'autoinstall.plesk.com', retry...
Error: Couldn't resolve host 'autoinstall.plesk.com', retry...
Error: Couldn't resolve host 'autoinstall.plesk.com', retry...

ERROR: Failed to read product information from the file : Can't process products.inf3: Failed to download the package http://autoinstall.plesk.com/products.inf3:
Couldn't resolve host 'autoinstall.plesk.com'

Can't process versions.inf3: Failed to download the package http://autoinstall.plesk.com/versions.inf3:
Couldn't resolve host 'autoinstall.plesk.com'


Not all packages were installed.
Please resolve this issue and try installing the packages again.
If you cannot resolve the issue on your own, contact product technical support for assistance.

 

[UFHH01]

Hi wmgilligan27,

I Googled all over, and completed this:
https://kb.plesk.com/en/121240

Could you pls POST the results of the tests, mentioned in the KB - article ( 1. / 2. / 4. / )?

 

[wmgilligan27]

1.
PING gp1.wpc.v2cdn.net (72.21.81.253) 56(84) bytes of data.
64 bytes from 72.21.81.253: icmp_seq=1 ttl=62 time=0.359 ms
64 bytes from 72.21.81.253: icmp_seq=2 ttl=62 time=0.419 ms
64 bytes from 72.21.81.253: icmp_seq=3 ttl=62 time=0.457 ms

2.
# nslookup autoinstall.plesk.com
Server: 8.8.8.8
Address: 8.8.8.8#53
Non-authoritative answer:
autoinstall.plesk.com canonical name = wpc.051C.thetacdn.net.
wpc.051C.thetacdn.net canonical name = gp1.wpc.v2cdn.net.
Name: gp1.wpc.v2cdn.net
Address: 72.21.81.253

4.
more /etc/resolv.conf
# Generatedby NetworkManager
# search serers.dmscp.net
nameserver 8.8.8.8
nameserver 8.8.4.4
# nameserver 127.0.0.1

 

[Thomas Mathew]

Try this KB article: https://kb.plesk.com/en/113175

 

[wmgilligan27]

setting the etc/hosts file dod the trick. Thanks!
At what point should I change it back?

 

[Thomas Mathew]

No need for change it back. Or check with your firewall settings why the connection is not establishing to ""autoinstall.plesk.com""