If no home directory exist on host, the CDK will fail #7530
Description
The CDK creates an account cache in:
~/.cdk/cache
When running in an environment that does no have a home directory, such as aws-lambda, attempting to create the cache will fail synth/deploy/diff.
Reproduction Steps
Execute the CDK inside a lambda which defines AWS credentials using AWS environment variables.
Error Log
Toolkit stack: CDKToolkit
Setting "CDK_DEFAULT_REGION" environment variable to us-west-2
Resolving default credentials
Looking up default account ID from STS
Default account ID: xxxxx
EACCES: permission denied, mkdir '/home/xxxx'
Error: EACCES: permission denied, mkdir '/home/xxx'
2020-04-23T03:11:28.801Z fc4cb3ae-5a84-1734-2972-7f101accf659 INFO Error: child exited with code 1
at ChildProcess.<anonymous> (/var/task/node_modules/await-spawn/index.js:28:21)
at ChildProcess.emit (events.js:311:20)
at ChildProcess.EventEmitter.emit (domain.js:482:12)
at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12) {
code: 1,
stderr: ''
}
Environment
- CLI Version : 1.34
- Framework Version: 1.34
- OS :
- Language : typescript
Other
A way around this is setting the HOME environment variable to a directory which exist, and the user has permission on (the user running cdk), courtesy of @rhboyd:
const main = async () => {
process.env.HOME = '/tmp';
const bl = await spawn('node', ['node_modules/aws-cdk/bin/cdk.js', '--app', '"node dist/sample-app.js"', 'synth', '--verbose', '--output', '/tmp', '--no-staging'], { stdio: ['pipe', 'pipe', process.stderr] });
console.log(bl.toString())
}