> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/continuous-delivery/troubleshooting-and-resources/armory/general/upgrade-error-authenticating-against-eks-clusters-heptio-authenticator-aws.md).

# Upgrading from 2.19.x to 2.20.x Error Authenticating Against EKS Clusters (heptio-authenticator-aws)

### Issue <a href="#issue" id="issue"></a>

Upon upgrading from 2.19.x to 2.20.x, `heptio-authenticator-aws` errors appear in CloudDriver LogsThe following type of error can be found in the CloudDriver Logs 2020-07-09 09:38:57.221 WARN 1 --- \[0.0-7002-exec-5] c.n.s.c.k.v.c.ManifestController : Failed to read manifest

com.netflix.spinnaker.clouddriver.kubernetes.v2.op.job.KubectlJobExecutor$KubectlException: Failed to read ingress from \[podname]: Unable to connect to the server: getting credentials: exec: exec: "heptio-authenticator-aws": executable file not found in $PATH

```
at com.netflix.spinnaker.clouddriver.kubernetes.v2.op.job.KubectlJobExecutor.get(KubectlJobExecutor.java:355) ~[clouddriver-kubernetes-v2-GCSFIX.jar:na]
```

### Cause <a href="#cause" id="cause"></a>

Heptio authenticator changed names within Kubernetes SIG as per:<https://github.com/kubernetes-sigs/aws-iam-authenticator/pull/108>Armory used to symlink heptio to the iam authenticator, but this was removed to preserve the original naming practice, as of 2.20.x