Add blog post: AWS CLI commands for CloudFormation stacks

src/blog/post-4.md

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+---
+title: 'AWS CLI Commands for Managing CloudFormation Stacks'
+pubDate: 2026-01-01
+author: 'Nakahara Daisuke'
+tags: ["AWS"]
+---
+
+This article is a collection of AWS CLI commands used while updating the CloudFormation stacks that support this blog.
+
+Each command is grouped by its purpose, focusing on practical workflows for managing CloudFormation stacks safely and explicitly.
+
+### Assume an IAM Role Temporarily
+Use the following command to assume an IAM role temporarily and output the credentials as a JSON file.
+```bash
+aws sts assume-role \
+  --role-arn arn:aws:iam::000000000000:role/MyRole \
+  --role-session-name my-session-name \
+  --profile my-profile \
+  > /tmp/creds.json
+```
+
+Set environment variables based on the generated JSON credentials file.
+```bash
+export AWS_ACCESS_KEY_ID=$(jq -r '.Credentials.AccessKeyId' /tmp/creds.json)
+export AWS_SECRET_ACCESS_KEY=$(jq -r '.Credentials.SecretAccessKey' /tmp/creds.json)
+export AWS_SESSION_TOKEN=$(jq -r '.Credentials.SessionToken' /tmp/creds.json)
+```
+
+### Create a New CloudFormation Stack
+
+Use this command to create a new CloudFormation stack.
+```bash
+aws cloudformation create-stack \
+  --stack-name my-stack-name \
+  --template-body file://my-template.yaml \
+  --capabilities CAPABILITY_NAMED_IAM \
+  --region ap-northeast-1
+```
+
+### Update an Existing Stack with Parameters
+
+Use this command to update an existing stack while passing parameters.
+```bash
+aws cloudformation update-stack \
+  --stack-name my-stack-name \
+  --template-body file://my-template.yaml \
+  --capabilities CAPABILITY_NAMED_IAM \
+  --region ap-northeast-1 \
+  --parameters ParameterKey=KeyName,ParameterValue="Value"
+```
+
+### Manually Start a Stack Rollback
+
+Use this command to manually continue a stack rollback.
+```bash
+aws cloudformation continue-update-rollback \
+  --stack-name my-stack-name \
+  --region ap-northeast-1
+```
+
+### Wait for Stack Rollback Completion
+
+Use this command to wait until the rollback process is complete.
+```bash
+aws cloudformation wait stack-rollback-complete \
+  --stack-name my-stack-name \
+  --region ap-northeast-1
+```
+
+### Create a Change Set to Import Existing Resources
+
+Use this command to create a change set for importing existing (non-IaC) resources into a CloudFormation stack.
+```bash
+aws cloudformation create-change-set \
+  --stack-name my-stack-name \
+  --change-set-name my-change-set-name \
+  --change-set-type IMPORT \
+  --template-body file://my-template.yaml  \
+  --resources-to-import file://my-import-definition.json \
+  --region ap-northeast-1
+```
+
+
+### Check the Status of a Change Set
+
+Use this command to inspect the status and details of a change set.
+```bash
+aws cloudformation describe-change-set \
+  --stack-name my-stack-name \
+  --change-set-name my-change-set-name \
+  --region ap-northeast-1
+```
+
+### Execute a Change Set
+
+Use this command to execute the prepared change set.
+```bash
+aws cloudformation execute-change-set \
+  --stack-name my-stack-name \
+  --change-set-name my-change-set-name \
+  --region ap-northeast-1
+```

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