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Replace hardcoded instance ID in README with CloudFormation lookup

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The instance ID changes on every instance replacement (version
upgrades, stack updates). Using a dynamic query prevents stale
references and removes a manual update step from the deploy process.
This commit is contained in:
Adam Moussa 2026-05-15 17:10:29 -04:00
parent 7aaf8340a5
commit 9d48c82d77
1 changed files with 10 additions and 4 deletions
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14
README.md
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@ -4,7 +4,10 @@ Self-hosted Forgejo git server for archiving GitHub repos and mirroring active o
## Architecture
- **EC2**: t4g.small (arm64), Amazon Linux 2023, 50GB gp3 EBS — instance `i-0d3005fb3c36124cd`
- **EC2**: t4g.small (arm64), Amazon Linux 2023, 50GB gp3 EBS — look up instance ID with:
```
aws cloudformation describe-stacks --stack-name forgejo --query 'Stacks[0].Outputs[?OutputKey==`InstanceId`].OutputValue' --output text
```
- **Network**: Private subnet (us-east-1a), behind `seahaven-com` ALB for SSL termination
- **DNS**: `forgejo.seahaven.com` — Route53 alias record pointing to the `seahaven-com` ALB (not a direct A record)
- **TLS**: Wildcard cert on ALB, HTTP internally on port 3000
@ -148,7 +151,8 @@ sudo /usr/local/bin/forgejo-refresh-tokens.sh
After the stack deploys, connect via SSM and create the admin user:
```bash
aws ssm start-session --target i-0d3005fb3c36124cd
INSTANCE_ID=$(aws cloudformation describe-stacks --stack-name forgejo --query 'Stacks[0].Outputs[?OutputKey==`InstanceId`].OutputValue' --output text)
aws ssm start-session --target "$INSTANCE_ID"
sudo -u forgejo /usr/local/bin/forgejo admin user create \
--admin \
@ -200,7 +204,8 @@ CI/CD is handled by GitHub Actions — PRs run CI, merges to `main` deploy via t
After the first deploy with the 3-2-1 changes, the running instance's backup script still uses the old S3 path (without the `archive/` prefix). Update it via SSM:
```bash
aws ssm start-session --target i-0d3005fb3c36124cd
INSTANCE_ID=$(aws cloudformation describe-stacks --stack-name forgejo --query 'Stacks[0].Outputs[?OutputKey==`InstanceId`].OutputValue' --output text)
aws ssm start-session --target "$INSTANCE_ID"
sudo sed -i 's|s3://forgejo-backups-328440206208/${TIMESTAMP}/|s3://forgejo-backups-328440206208/archive/${TIMESTAMP}/|' /usr/local/bin/forgejo-backup.sh
```
@ -217,7 +222,8 @@ aws secretsmanager create-secret --name forgejo/slack-webhook \
Update the `FORGEJO_VERSION` constant in `lib/forgejo-stack.ts` and deploy. This replaces the instance, so ensure the latest EBS snapshot is available for data recovery if needed. Alternatively, update in-place via SSM:
```bash
aws ssm start-session --target i-0d3005fb3c36124cd
INSTANCE_ID=$(aws cloudformation describe-stacks --stack-name forgejo --query 'Stacks[0].Outputs[?OutputKey==`InstanceId`].OutputValue' --output text)
aws ssm start-session --target "$INSTANCE_ID"
sudo systemctl stop forgejo
sudo curl -Lo /usr/local/bin/forgejo "https://codeberg.org/forgejo/forgejo/releases/download/v<NEW_VERSION>/forgejo-<NEW_VERSION>-linux-arm64"