Accessing the nodes

Access through SSH

The nodes from the Virtual Wall and w-iLab.t are accessible natively and publicly through IPv6 SSH (based on SSH keys which are installed by the Aggregate Manager). The RSpec manifests return DNS names, and these resolve to IPv6 addresses. This is true for physical hosts and XEN VMs.

If you don’t have native IPv6 address, you can access the nodes in two ways:

  • you can register for an IPv6 address and tunnel, e.g. at Sixxs (choose AYIYA tunnel) and install Aiccu.
  • jFed currently supports SSH proxy login, which means that you transparently log in through an IPv4 SSH proxy. Go to jFed preferences, click Run Proxy Test at the bottom right, and then click Always besides Proxy for SSH connections followed by Save. Note: this only works out of the box with the iMinds ssh proxy, if you have an account on the Virtual Wall authority (as we copy the ssh public keys from there).

Accessing OpenVZ containers

The OpenVZ hosts only have a private IPv4 address, so you need to use the jFed SSH proxy option to login on them. Go to jFed preferences, click Run Proxy Test at the bottom right, and then click Always besides Proxy for SSH connections followed by Save.

Accessing Windows 7 machines

The Windows 7 images (see Install a specific disk image on a node how to use these images) in the Virtual Wall have by default only a private IPv4 address. There is installed a cygwin environment with an SSH daemon. For login in through SSH, you have to use the jFed SSH proxy option (see above).

Enable Remote Desktop

If you want graphical access, you can enable RDP as follows:

net user <username> <somepassword>

Your username should be the same, as the one which was used for SSH. This username/password combination should then work with whatever RDP client you want to use. Note that this would need to be done on each Windows node in the slice.

Enable IPv6 on the windows node

When you want to use RDP natively (without port forward or so), you have to enable IPv6 as follows:

reg add "HKLM\SYSTEM\CurrentControlSet\services\TCPIP6\Parameters" /v DisabledComponents /t REG_DWORD /d 0 /f
netsh interface ipv6 set privacy state=disabled store=active
netsh interface ipv6 set privacy state=disabled store=persistent
netsh interface ipv6 set global randomizeidentifiers=disabled store=active
netsh interface ipv6 set global randomizeidentifiers=disabled store=persistent
Check ipconfig, if there is no IPv6 address, then reboot

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