aws-cloudformation/cfn-language-discussion

Language discussions for CloudFormation template language

Stars: 147
Forks: 12
Open beginner issues: 0
Indexed issues: 84

Dominant language: No language data
License: Apache-2.0
Last GitHub push: Jul 27, 2023
Latest indexed: Sep 14, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

Open All

84 open issues indexed

JSON objects as template parameters Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

aws-cloudformation/cfn-language-discussion#169 · Opened May 27, 2026
"Fn::GetStackOutput" throttles "DescribeStacks" API calls if used in high number Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#168 · 3 reactions · Opened May 27, 2026
Add AWS::DeploymentTimestamp pseudo parameter to improve monitoring Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#167 · 8 reactions · Opened Jul 18, 2025
[Bug report]: using `Ref` with a `Fn::ForEach` loop identifier as the first argument to `Fn::Select` results in a transform error Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

aws-cloudformation/cfn-language-discussion#166 · Opened Jun 20, 2025
fn::foreach to return array or alternative that provides the ability to construct dynamic array. Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#165 · 1 reaction · Opened Apr 22, 2025
Increase template parameter size Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#164 · Opened Apr 9, 2025
New Function Request to convert strings(From kebab or snake to pascal or camel and vice versa) Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

aws-cloudformation/cfn-language-discussion#163 · Opened Mar 17, 2025
Fn::ForEach Issue - Unable to reference resources with logical IDs generated using the &{} syntax Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#162 · 2 reactions · Opened Jan 6, 2025
Fn::ForEach enhancement to create list parameters Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#161 · 2 comments · 4 reactions · Opened Nov 22, 2024
AWS::LanguageExtensions transform breaks with ContainerDependency blocks ECS Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#160 · 1 comment · Opened Nov 15, 2024
AWS::LanguageExtensions transform seems to break conditions with Fn::Select Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#159 · 3 comments · 9 reactions · Opened Jul 12, 2024
Add (language extension) functions that handles basic math operations Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

aws-cloudformation/cfn-language-discussion#158 · 1 comment · 27 reactions · Opened Jun 10, 2024
Security group egress rule is deleted when adding another egress rule. Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#157 · Opened Apr 15, 2024
Transform AWS::LanguageExtensions failed with: Condition layout is incorrect -- But I'm not using Conditions anywhere in the template. Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

aws-cloudformation/cfn-language-discussion#156 · 1 comment · 1 reaction · Opened Mar 15, 2024
Unexpected behaviour creating AWS::ElasticLoadBalancingV2::ListenerRule using Fn::ForEach function Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#154 · 5 reactions · Opened Jan 19, 2024
Adding LanguageExtensions breaks Account Id comparisons Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#153 · Opened Jan 5, 2024
ChangeSet creation failure with {{IntrinsicFunction:(stack_name)//Fn::ImportValue}} is not allowed. Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#152 · 1 comment · 6 reactions · Opened Dec 29, 2023
Fn::Range intrinsic function that would return a list of Strings, based on integers that are passed to it Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#148 · 1 comment · 12 reactions · Opened Nov 3, 2023
Transform AWS::LanguageExtensions failed with: Condition layout is incorrect. Rollback requested by user Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#147 · 5 comments · 23 reactions · Opened Nov 1, 2023
Fn::ForEach stack updates does not trigger change Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#146 · 4 comments · 18 reactions · Opened Oct 11, 2023
Add Fn::Sequence Intrinsic Function to AWS CloudFormation for Dynamic Sequence Generation Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#144 · 3 reactions · Opened Sep 5, 2023
Fn::ToJsonString unrecognized in conditional array element of resource properties Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#143 · 1 comment · 9 reactions · Opened Aug 31, 2023
AWS::CloudFormation::Stack parameter type, and/or AWS::SSM::Parameter::Value<"arbitraryString"> Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#141 · 11 reactions · Opened Aug 22, 2023
Allow `Fn::Sub` to be used for `OutputKey` in `Fn::ForEach` Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#140 · 1 comment · 8 reactions · Opened Aug 20, 2023
AWS::LanguageExtensions not supporting RetainExceptOnCreate Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

aws-cloudformation/cfn-language-discussion#139 · 2 comments · 4 reactions · Opened Aug 16, 2023
Function to find all Resources of a specific type (to use with Fn::ForEach) Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#138 · 5 comments · 2 reactions · Opened Aug 11, 2023
Intrinsic functions for the condition name in Fn::If Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#137 · 3 comments · 13 reactions · Opened Aug 10, 2023
resolving parameter values via Fn::Sub inside of Fn::ForEach is throwing an error Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

aws-cloudformation/cfn-language-discussion#136 · 1 reaction · Opened Aug 5, 2023
Transform AWS::LanguageExtensions failed with: Fn::If layout is incorrect Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

aws-cloudformation/cfn-language-discussion#135 · 2 comments · 2 reactions · Opened Aug 4, 2023
in CFN documentation, make filter view (YAML vs JSON) a "sticky" preference Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#134 · 5 reactions · Opened Aug 4, 2023
Improve declaration of Cloudwatch body. Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#133 · 8 reactions · Opened Aug 1, 2023
Feature request for dynamic evaluation of conditions. Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#132 · 1 reaction · Opened Aug 1, 2023
Feature request: a new Fn::Get intrinsic function to get a value by key from (JSON) data Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

aws-cloudformation/cfn-language-discussion#129 · 3 comments · 12 reactions · Opened Jun 23, 2023
Use Fn::ImportValue in Conditions Open

feature request

Difficulty 5/5 Over a week Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#127 · 2 comments · 21 reactions · Opened Jun 16, 2023
Use CloudFormation import with substitution name in conditional expression with `DeletionPolicy`. Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#126 · 3 comments · Opened Jun 15, 2023
Using !Ref in DeletionPolicy Breaks If Resource is Conditionally Created Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#124 · 2 comments · 3 reactions · Opened Apr 25, 2023
Add Fn::Filter to complement Fn::Select Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#121 · 3 comments · 1 reaction · Opened Mar 30, 2023
Fn::ForEach intrinsic function - Additional Enhancements Open

feature request

Difficulty 5/5 Over a week Newbie friendliness 20/100

aws-cloudformation/cfn-language-discussion#118 · 22 comments · 96 reactions · Opened Mar 8, 2023
Allow support for Fn::Equals to compare a string value to a list of strings value Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#117 · 7 reactions · Opened Mar 7, 2023
"optional" parameters Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#116 · 2 comments · Opened Mar 2, 2023
Allow CommaDelimitedList stack parameters to be passed to CommaDelimitedList parameters in nested stacks. Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#115 · 2 comments · 4 reactions · Opened Mar 1, 2023
Multi-file support in CloudFormation Open

feature request

Difficulty 5/5 Over a week Newbie friendliness 20/100

aws-cloudformation/cfn-language-discussion#114 · 3 reactions · Opened Feb 20, 2023
Intrinsic function for simplified IAM permissions Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#111 · 2 comments · 3 reactions · Opened Jan 20, 2023
LanguageExtensions and Serverless-2016-10-31 conflicts - Support Intrinsic Function in DependsOn Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#109 · 8 comments · 5 reactions · Opened Jan 16, 2023
Intrinsics in keys of a map (suggestion: Fn::KvFromMap, Fn::MapFromKv) Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

aws-cloudformation/cfn-language-discussion#107 · 1 reaction · Opened Jan 3, 2023
Allow using Fn::ToJsonString without Transform Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

aws-cloudformation/cfn-language-discussion#105 · 6 comments · 10 reactions · Opened Dec 19, 2022
Fn::ToJsonString: Template error: every value of the context object of every Fn::Sub object must be a string or a function that returns a string Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

aws-cloudformation/cfn-language-discussion#103 · 8 comments · 3 reactions · Opened Dec 16, 2022
Allow resources with the same name to be conditionally accepted if they already exist Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#99 · 1 comment · 4 reactions · Opened Oct 20, 2022
Bug: CloudFormation accepts invalid JSON, does not complain about duplicate logical ids. Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

aws-cloudformation/cfn-language-discussion#96 · 1 reaction · Opened Sep 29, 2022
Missing intrinsic function for Condition, Rules, and Properties - `Fn::RegExp`/`!RegExp` -> `Boolean` Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

aws-cloudformation/cfn-language-discussion#87 · 1 comment · 5 reactions · Opened Aug 4, 2022

A short digest of beginner-friendly GitHub issues.