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TManhente avatar TManhente commented on July 21, 2024 4

The same seems to be happening with the psycopg2-py38:2 layer in us-east-1 region:

$ aws lambda get-layer-version-by-arn --arn 'arn:aws:lambda:us-east-1:898466741470:layer:psycopg2-py38:2'

An error occurred (AccessDeniedException) when calling the GetLayerVersionByArn operation: User: arn:****** is not authorized to perform: lambda:GetLayerVersion on resource: arn:aws:lambda:us-east-1:898466741470:layer:psycopg2-py38:2 because no resource-based policy allows the lambda:GetLayerVersion action

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revmischa avatar revmischa commented on July 21, 2024 1

I ran this stupid script, does that fix everyone's issues?

#!/bin/bash

# Array of Layer ARNs without version numbers and their corresponding version numbers
declare -a layers=(
    "arn:aws:lambda:ca-central-1:898466741470:layer:psycopg2-py38 1"
    "arn:aws:lambda:us-east-1:898466741470:layer:psycopg2-py38 2"
    "arn:aws:lambda:us-east-2:898466741470:layer:psycopg2-py38 1"
    "arn:aws:lambda:us-west-1:898466741470:layer:psycopg2-py38 1"
    "arn:aws:lambda:us-west-2:898466741470:layer:psycopg2-py38 1"
    "arn:aws:lambda:eu-west-1:898466741470:layer:psycopg2-py38 1"
    "arn:aws:lambda:eu-west-2:898466741470:layer:psycopg2-py38 1"
    "arn:aws:lambda:eu-west-3:898466741470:layer:psycopg2-py38 1"
    "arn:aws:lambda:eu-central-1:898466741470:layer:psycopg2-py38 1"
    "arn:aws:lambda:eu-south-1:898466741470:layer:psycopg2-py38 1"
    "arn:aws:lambda:ap-northeast-1:898466741470:layer:psycopg2-py38 1"
    "arn:aws:lambda:ap-southeast-1:898466741470:layer:psycopg2-py38 1"
    "arn:aws:lambda:ap-southeast-2:898466741470:layer:psycopg2-py38 1"
    "arn:aws:lambda:sa-east-1:898466741470:layer:psycopg2-py38 1"
)

# Update permissions for each layer
for layer_info in "${layers[@]}"; do
    IFS=' ' read -ra ADDR <<< "$layer_info"
    layer_arn=${ADDR[0]}
    version_number=${ADDR[1]}
    region=$(echo $layer_arn | cut -d':' -f4)

    aws lambda add-layer-version-permission --layer-name $layer_arn --version-number $version_number --statement-id 'make-public' --action lambda:GetLayerVersion --principal '*' --region $region
done

I don't know why the layer permissions disappeared yesterday. I recommend to everyone to maintain your own layers instead of using public layers because Amazon's support (or Serverless's support) seems to be quite buggy and unpleasant.

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CosmicBara avatar CosmicBara commented on July 21, 2024

Having a similar issue in us-east-1 region, and it's blocking our deployments. Any updates on this?

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micsparre avatar micsparre commented on July 21, 2024

same issue in us-west-2 region

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revmischa avatar revmischa commented on July 21, 2024

I did upload py39 layers yesterday but didn't touch the psycopg2-py38 layers at all. So perhaps they are connected in some non-obvious way.

Screenshot 2024-01-22 at 9 56 50 AM

The layer exists and has not been modified in 4 years:
image

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pavelmikhalchuk avatar pavelmikhalchuk commented on July 21, 2024

Layer "arn:aws:lambda:eu-central-1:898466741470:layer:psycopg2-py38 1" now works just fine. Thanks a lot!

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