2 subnets in the same region

[kiahmed]

why can't I mention 2 different subnet in the same AZ ? How to do that. Also, is there a way to attach a node-group to selected subnets only?

[errordeveloper]

We currently only support subnet-per-AZ. You can attach a nodegroup to a particular subset of AZs, e.g. single AZ or two instead of 3 (default).

What is you use-case for multiple subnets per AZ?

[kiahmed]

well, it requires 2x by 2x so. I have 2 private subnets but when I create another 2 public in the same AZ as the AWS Tokyo region has only 3 az, could'd find a way to feed in to eksctl config whereas aws cli and console itself accepts it. Ins't it superposed to covert all to aws compatible clouformation then why eksclt has this lacking or coming up with its own settings /restrictions ?

[errordeveloper]

It's not very clear where is the issue exactly. Please show the commands you tried to use and be more specific - what is it that you are trying to achieve overall? Why do you need to create two public subnets in the same AZ - do you need to use them for isolation, or you want to avoid wasting IP addresses, or is it something else?

[kiahmed]

it is simple .. i want 4 subnets but have only 3 AZ . I could go with 1 subnet in each AZ but it doenst work like that .. trying to create eks cluster

[errordeveloper]

Ok, so it's to do with IP addresses being wasted if you were to use only 3 subnets.

We are considering to review this, but I'm not sure when we would be able to implement a change that would allow you to do this. In the meantime, perhaps you could use 2 larger subnets in 2 AZs, or 3 subnets in 3 AZs and leave one unused until we fix this issue.

If you need urgent help, please contact me on Slack.

[kiahmed]

" 2 larger subnets in 2 AZs" didnt work for me . .you mean one in private and another public in two different AZ i?

[errordeveloper]

No. I mean 2 AZs with 2 private and/or 2 public subnets, total of either 2 or 4 subnets (depending on whether you need just private ones or public also).

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On Tue, 4 Jun 2019, 6:53 pm kiahmed, ***@***.***> wrote: " 2 larger subnets in 2 AZs" didnt work for me . .you mean one in private and another public in two different AZ i? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#833>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAB5MS2X5BEUG6TLRI4HK6LPY2T3BANCNFSM4HSKTXMA> .

[errordeveloper]

Your use-case is still not very clear to me, but I would assume that this is will be covered by #806, which we are planning to address as the use-cases are very clear now.

[kiahmed]

my case is i need to use 4 subnets spreading across 2/3 AZ, but when eksctl sees an AZ was already used it complains why? Then how we supposed to have multiple subnets in same AZ

[aravindgv]

I am also looking for multipe Az's