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# citrix-netscalers
Slackbot
04/08/2020, 6:43 PMThis message was deleted.
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Mike Streetz (O_P)
04/08/2020, 6:49 PMazure is weird, it’s the only one that can do a single IP config
Mike Streetz (O_P)
04/08/2020, 6:50 PMMike Streetz (O_P)
04/08/2020, 6:50 PMlook at the port address translation bit
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Josh Bernstein
04/08/2020, 6:52 PMThanks, I saw that and will review again. This one is weird it has multiple NICs and IPs. I know it was deployed from the HA template.
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CTXMike
04/08/2020, 6:52 PMYou definitely do not want to do a single IP config. It's a hacky workaround from the days where Azure wouldn't give anyone multiple addresses.
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Josh Bernstein
04/08/2020, 6:52 PMAh
Josh Bernstein
04/08/2020, 6:53 PMSo it doesn’t seem to be setup for single IP. But the ALB doesn’t seem to be passing traffic (or the NS is ignoring it).
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Mike Streetz (O_P)
04/08/2020, 6:54 PMI never had luck with HA in either Azure or AWS
Mike Streetz (O_P)
04/08/2020, 6:54 PMyou’re nearly always better off not doing it and doing GSLB
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Josh Bernstein
04/08/2020, 6:54 PMGSLB in the same region?
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Mike Streetz (O_P)
04/08/2020, 6:54 PMwhy do you need HA in the same region?
Mike Streetz (O_P)
04/08/2020, 6:54 PMif something goes down it’s going to be the whole region generally
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Josh Bernstein
04/08/2020, 6:55 PMI was told that during maintenance it could go down.
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CTXMike
04/08/2020, 6:55 PMyeah honestly in cloud providers I generally push to instead look at independent instances and distribute traffic using GSLB or the analogous cloud function. when doing maintenance you just disable the GSLB service/etc and let it drain
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Josh Bernstein
04/08/2020, 6:56 PMIt’s an Active/Passive between the two regions right now. So maybe that’s why it was suggested that way.
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Mike Streetz (O_P)
04/08/2020, 6:56 PMHA can’t span an AZ, so if your AZ goes down for maintenance what does HA get you?
Mike Streetz (O_P)
04/08/2020, 6:56 PMunless that changed recently
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Josh Bernstein
04/08/2020, 6:57 PMI’d have to confirm, it looked like it could be done.
Josh Bernstein
04/08/2020, 6:57 PMThanks for all of the feedback everyone!
Josh Bernstein
04/08/2020, 6:58 PMThe funny part is this was setup by Citrix initially, but it’s not working.
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Mike Streetz (O_P)
04/08/2020, 7:00 PMI might be thinking of AWS where it couldn’t span zones because of the way it did failover with elastic network cards and not floating IPs
Mike Streetz (O_P)
04/08/2020, 7:01 PMI still firmly believe you’re better off with GSLB due to the huge amount of time a failover can take, but understand that some people balk at the cost
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CTXMike
04/08/2020, 7:05 PMHA can span zones in AWS and Azure now. AWS migrates EIPs using ip sets, Azure still relies on a frontend ALB
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Mike Streetz (O_P)
04/08/2020, 7:06 PMgood to know, cheers
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Cormac Long
04/08/2020, 9:48 PMWent through this recently. Azure can do multi nic, multi ip now via the HA template config but it still relies on the alb to route the traffic. Gateway vips are the alb front end ip as you say. Citrix docs are terrible on it. This one is pretty good - https://vzerotohero.com/2018/06/deploying-netscaler-ha-template-on-microsoft-azure-ultimate-guide/. Steps through the different setups and runs through the deployment of the method you are talking about.
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Josh Bernstein
04/09/2020, 2:52 PM@Cormac Long Thank you! That answered my question. Still having an issue, but think it’s something in Azure vs the ADC.