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Citrix NetScaler Autoscaling

Citrix NetScaler Autoscaling

So had a case appear earlier today where we needed to scale out the NetScaler deployment within a container environment. More specific we needed a good way for NetScaler to automatic add new entries within a load balanced vserver when a container orchestration environment scaled out a stack with new containers.

So in most cases a container orchestration platform already has a built-in load balancing mechanism like HAproxy for instance which is used to load balance between the different containers within a host. In most cases you have multiple container hosts and therefore have multiple HAproxy instances with its own IP address and exposed port which represents a service.

Now we could of course have each HAproxy IP within a DNS entry with round robin, but that would not provide us with a good health monitoring service, so if a host went down and suddenly a service would be unavailable for some users who would connect.

Now we often need a new load balanced layer above the HAproxy tier to provide load balanced between the different HAproxy instances with  proper health monitoring.  The issue is that we need to insert the new container instances when they get provisioned so they are automatically load balanced.

Read the entire article here, NetScaler Autoscaling | Marius Sandbu

via Marius Sandbu.

IT Blog by Marius Sandbu Marius Sandbu (@msandbu on Twitter), works as an Cloud Architect at Exclusive Networks/BigTec in Norway. Primary focusing on Software defined datacenter solution and how they integrate with end-user computing technology and also works alot with cloud solutions like Microsoft Azure. Marius is also an Microsoft MVP, Veeam Vanguard, VMware vExpert and is also the author of many Citrix NetScaler books and shares his thought and ideas about technolgy on his blog.

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