Last friday I passed the 1Y0-351 (Citrix NetScaler 10.5 Essentails and Networking) exam with a pretty good score. The exam was necessary, not only because I will do much more NetScaler projects in the future, but also because Citrix has made it mandatory to have a CCP-N in your company to to sell Citrix NetScaler.
Preparation My employer booked me a 5-day course (CNS-220 Citrix NetScaler Essentials and Traffic Management). Very nice, although I already had experience with NetScaler deployments.
Starting with release 11.1, NetScaler ADC offers an easy way to redirect traffic from HTTP to HTTPS within the configuration of a load-balanced vServer. With 11.1, Citrix introduced the paramter -redirectFromPort and -redirectURL.
While playing with a NetScaler ADC in my lab, I discovered a strange error message as I tried to configure the redirect.
Patrick Terlisten/ vcloudnine.de/ Creative Commons CC0
Internal vserver couldn’t be set?! Okay, there was already a vServer, that was listening on port 80.
This is not a brand new issue and it’s well discussed in the VMTN. After applying the ESXi 5.5.0 U2 patches from 15. October 2014, you may notice the following symptoms:
Some Citrix NetScaler VMs with e1000 vNICs loses network connectivity You can’t access the VM console after applying the patches VMware has released a couple of patches in October:
ESXi550-201410101-SG (esx-base) ESXi550-201410401-BG (esx-base) ESXi550-201410402-BG (misc-drivers) ESXi550-201410403-BG (sata-ahci) ESXi550-201410404-BG (xhci-xhci) ESXi550-201410405-BG (tools-light) ESXi550-201410406-BG (net-vmxnet3) More specifically, it’s the patch ESXi550-201410401-BG that is causing the problem.
