Mimix installation fails with error "Failed to open connection to server at host gw and port 80"

When installing Mimix on a Kyndryl Cloud Uplift IBMi LPAR the installation will fail with the following errors when using a manual network:

The joblog may show the following:

Cannot open a channel to the remote end. Failed to open connection to server at host gw and port
80. Error is 3401 - Permission denied.

Resolution:

The Mimix installation script runs a command that downloads the main installer from the Kyndryl Cloud Uplift repository.

This repository is accessed via the Kyndryl Cloud Uplift metadata service at http://gw/skytap

Kyndryl Cloud Uplift metadata service can only be accessed by LPARs attached to an automatic network. If your LPAR is only connected to a manual network and converting it to an automatic network is not feasible, you may add a new automatic network to the environment. Then add a new NIC on the LPAR connected to the automatic network to access the metadata service.

Follow the procedure here to add an automatic network to your environment using the Kyndryl Cloud Uplift UI

The following steps detail how to configure a network interface in IBMi:

• Login to the IBMi VM with High privileged User profile e.g. "QSECOFR"
• After adding the new automatic network, in the Guest OS, check for the new CMN adapter by running WRKHDWRSC *CMN and note down the new CMN name.
  
  Use the CMN name noted in the above step to create a new Eth Line, vary on and add the new interface, and start the network.
  
   
• CRTLINETH LIND(<ETHLINE name>) RSRCNAME(<New CMNXX>)
• VRYCFG CFGOBJ(<ETHLINE name>) CFGTYPR(*LIN) STATUS(*ON)
• ADDTCPIFC INTNETADR(*IP4DHCP) LIND(<ETHLINE name>) SUBNETMASK(*)

• STRTCPIFC(*IP4DHCP) LIND(<ETHLINE name>)

Confirm that the LPAR can reach the metadata service by pinging gw. 

Reference links

• Accessing the VM metadata service: https://help.skytap.com/accessing-vm-metadata-service-from-within-a-vm.html
• Installing Precisely Azure MIMIX software on Skytap VMs: https://help.skytap.com/pwr-mimix-installation.html 
• Creating an automatic network: https://help.skytap.com/creating-automatic-networks.html