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# kubernetes

sparse-intern-71089

11/02/2021, 7:02 PM

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billowy-army-68599

11/02/2021, 7:03 PM

you should be able to do this, but you'll need to use an

apply

I think

billowy-army-68599

11/02/2021, 7:03 PM

can you share what you have already?

salmon-raincoat-19475

11/02/2021, 7:05 PM

thanks, jaxx... I have tried a few things, latest, being an

apply

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kubeconfig = open('kubeconfig', 'w')
kjson = self.cluster.kubeconfig.apply(json.dumps)
kubeconfig.write(kjson)

salmon-raincoat-19475

11/02/2021, 7:05 PM

I def. have the kubeconfig when doing

pulumi.export('kubeconfig', self.cluster.kubeconfig)

billowy-army-68599

11/02/2021, 7:06 PM

you should be able to use the

BucketObject

resource to write the file, you're trying to write locally at the moment?

salmon-raincoat-19475

11/02/2021, 7:06 PM

correct, just to validate

salmon-raincoat-19475

11/02/2021, 7:07 PM

error:

Copy code

kubeconfig.write(kjson)
    TypeError: write() argument must be str, not Output

billowy-army-68599

11/02/2021, 7:10 PM

try something like this:

Copy code

def write_to_file(kubeconfig):
    f = open("kubeconfig.json", "a")
    f.write(kubeconfig)
    f.close()

json = self.cluster.kubeconfig.apply(lambda k: write_to_file(kubeconfig=k))

billowy-army-68599

11/02/2021, 7:11 PM

your

apply

needs to take a function to operate on, so simply doing

json.dumps

won't get it, and you need to actually do the write inside the apply

billowy-army-68599

11/02/2021, 7:11 PM

https://www.leebriggs.co.uk/blog/2021/05/09/pulumi-apply.html have a read of this and see if it helps

salmon-raincoat-19475

11/02/2021, 7:43 PM

awesome, thanks, that makes sense! this worked:

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bucket = pulumi_aws.s3.get_bucket("my_bucket_name")
        source = self.cluster.kubeconfig.apply(lambda s: pulumi.asset.StringAsset(json.dumps(s)))
        filename = f'{self.env_stack}-kubeconfig'
        pulumi_aws.s3.BucketObject(resource_name=filename,
            bucket=bucket.id,
            key=f'some/sub_dir/{filename}',
            source=source
        )

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