Symptoms

It is not possible to retrieve Plesk packages from the repository at autoinstaller.plesk.com. The following error is displayed:

Getting new version of Parallels Installer...
File downloading parallels_installer_CloudLinux_5.7.1_x86_64.md5sum :
ERROR: The required version '3.11.0' was not found on the server.
This could happen because of configuration error at the download site.
Failed to download the package http://autoinstall.plesk.com/Paralle...x86_64.md5sum:
The requested URL returned error: 404
Not all packages were installed.

OR

http://autoinstall.plesk.com/PHP_5.3.29/dist-rpm-CentOS-7-x86_64/packages/plesk-php53-ioncube-loader-4.7.2-centos7.15020319.x86_64.rpm: [Errno -1] Package does not match intended download. Suggestion: run yum --enablerepo=PHP_5_3_29-dist clean metadata
Trying other mirror.
centos7.15020319.x86_64: [Errno 256] No more mirrors to try.', u'plesk-php53-ioncube-loader-4.7.2-centos7.15020319.x86_64: [Errno 256] No more mirrors to try.', u'plesk-php52-xdebug-2.2.3-
ERROR: Failed to run the Yum utility.
The Yum utility failed to install the required packages.

It is also not possible to download the file using wget:

wget http://autoinstall.plesk.com/plesk.inf3

Resolving autoinstall.plesk.com... 93.184.221.133
Connecting to autoinstall.plesk.com|93.184.221.133|:80... connected.
HTTP request sent, awaiting response... 200 OK 
Length: 222396 (217K) [text/xml] 
Saving to: `plesk.inf3.9' 3% [====> ] 6,960 --.-K/s in 0.001s 
2013-09-01 00:21:21 (6.56 MB/s) - Read error at byte 6960/222396 (Connection reset by peer). Retrying.

Cause

  1. Odin uses a content delivery network (CDN) to distribute Plesk packages. This technology uses several cache servers which are distributed across different parts of the internet. All of the servers share a common domain name, autoinstall.plesk.com, which resolves to different IP addresses depending on the network segment that a request comes from. Sometimes, a server becomes out of sync with the main replica and files go missing.

  2. Network issues (TCP window scaling).

Resolution

Use the main replica of the Plesk repository until your local CDN server synchronizes with it. To do this, configure a static resolution rule in the file /etc/hosts:

68.232.34.73 autoinstall.plesk.com

Alternatively:

93.184.221.133 autoinstall.plesk.com

If this does not help, disable TCP window scaling: 

echo 0 > /proc/sys/net/ipv4/tcp_window_scaling

See the following link for more details on TCP window scaling http://lwn.net/Articles/92727/

If the issue still persists, open the /etc/hosts file and replace: 

68.232.34.73 autoinstall.plesk.com

With:

199.115.104.31 pleskwin.download.swsoft.com download1.parallels.com autoinstall.plesk.com origin.autoinstall.plesk.com

Internal content