mirror of
https://github.com/edgelesssys/constellation.git
synced 2024-12-14 02:14:21 -05:00
139 lines
5.7 KiB
Markdown
139 lines
5.7 KiB
Markdown
|
# Troubleshooting
|
||
|
|
||
|
This section aids you in finding problems when working with Constellation.
|
||
|
|
||
|
## Common issues
|
||
|
|
||
|
### Issues with creating new clusters
|
||
|
|
||
|
When you create a new cluster, you should always use the [latest release](https://github.com/edgelesssys/constellation/releases/latest).
|
||
|
If something doesn't work, check out the [known issues](https://github.com/edgelesssys/constellation/issues?q=is%3Aopen+is%3Aissue+label%3A%22known+issue%22).
|
||
|
|
||
|
### Azure: Resource Providers can't be registered
|
||
|
|
||
|
On Azure, you may receive the following error when running `create` or `terminate` with limited IAM permissions:
|
||
|
```shell-session
|
||
|
Error: Error ensuring Resource Providers are registered.
|
||
|
|
||
|
Terraform automatically attempts to register the Resource Providers it supports to
|
||
|
ensure it's able to provision resources.
|
||
|
|
||
|
If you don't have permission to register Resource Providers you may wish to use the
|
||
|
"skip_provider_registration" flag in the Provider block to disable this functionality.
|
||
|
|
||
|
[...]
|
||
|
```
|
||
|
|
||
|
To continue, please ensure that the [required resource providers](../getting-started/install.md#required-permissions) have been registered in your subscription by your administrator.
|
||
|
|
||
|
Afterward, set `ARM_SKIP_PROVIDER_REGISTRATION=true` as an environment variable and either run `create` or `terminate` again.
|
||
|
For example:
|
||
|
```bash
|
||
|
ARM_SKIP_PROVIDER_REGISTRATION=true constellation create --control-plane-nodes 1 --worker-nodes 2 -y
|
||
|
```
|
||
|
|
||
|
Or alternatively, for `terminate`:
|
||
|
```bash
|
||
|
ARM_SKIP_PROVIDER_REGISTRATION=true constellation terminate
|
||
|
```
|
||
|
|
||
|
### Nodes fail to join with error `untrusted PCR value`
|
||
|
|
||
|
This error indicates that a node's [attestation statement](../architecture/attestation.md) contains measurements that don't match the trusted values expected by the [JoinService](../architecture/microservices.md#joinservice).
|
||
|
This may for example happen if the cloud provider updates the VM's firmware such that it influences the [runtime measurements](../architecture/attestation.md#runtime-measurements) in an unforeseen way.
|
||
|
You can change the expected measurements to resolve the failure.
|
||
|
|
||
|
:::caution
|
||
|
|
||
|
Attestation and trusted measurements are crucial for the security of your cluster.
|
||
|
Be extra careful when manually changing these settings.
|
||
|
When in doubt, check if the encountered [issue is known](https://github.com/edgelesssys/constellation/issues?q=is%3Aopen+is%3Aissue+label%3A%22known+issue%22) or [contact support](https://github.com/edgelesssys/constellation#support).
|
||
|
|
||
|
:::
|
||
|
|
||
|
You can use the `upgrade apply` command to change measurements of a running cluster:
|
||
|
|
||
|
1. Modify the `measurements` key in your local `constellation-conf.yaml` to the expected values.
|
||
|
2. Run `constellation upgrade apply`.
|
||
|
|
||
|
Keep in mind that running `upgrade apply` also applies any version changes from your config to the cluster.
|
||
|
|
||
|
You can run these commands to learn about the versions currently configured in the cluster:
|
||
|
- Kubernetes API server version: `kubectl get nodeversion constellation-version -o json -n kube-system | jq .spec.kubernetesClusterVersion`
|
||
|
- image version: `kubectl get nodeversion constellation-version -o json -n kube-system | jq .spec.imageVersion`
|
||
|
- microservices versions: `helm list --filter 'constellation-services' -n kube-system`
|
||
|
|
||
|
## Diagnosing issues
|
||
|
|
||
|
### Cloud logging
|
||
|
|
||
|
To provide information during early stages of a node's boot process, Constellation logs messages to the log systems of the cloud providers. Since these offerings **aren't** confidential, only generic information without any sensitive values is stored. This provides administrators with a high-level understanding of the current state of a node.
|
||
|
|
||
|
You can view this information in the following places:
|
||
|
|
||
|
<tabs groupId="csp">
|
||
|
<tabItem value="azure" label="Azure">
|
||
|
|
||
|
1. In your Azure subscription find the Constellation resource group.
|
||
|
2. Inside the resource group find the Application Insights resource called `constellation-insights-*`.
|
||
|
3. On the left-hand side go to `Logs`, which is located in the section `Monitoring`.
|
||
|
+ Close the Queries page if it pops up.
|
||
|
5. In the query text field type in `traces`, and click `Run`.
|
||
|
|
||
|
To **find the disk UUIDs** use the following query: `traces | where message contains "Disk UUID"`
|
||
|
|
||
|
</tabItem>
|
||
|
<tabItem value="gcp" label="GCP">
|
||
|
|
||
|
1. Select the project that hosts Constellation.
|
||
|
2. Go to the `Compute Engine` service.
|
||
|
3. On the right-hand side of a VM entry select `More Actions` (a stacked ellipsis)
|
||
|
+ Select `View logs`
|
||
|
|
||
|
To **find the disk UUIDs** use the following query: `resource.type="gce_instance" text_payload=~"Disk UUID:.*\n" logName=~".*/constellation-boot-log"`
|
||
|
|
||
|
:::info
|
||
|
|
||
|
Constellation uses the default bucket to store logs. Its [default retention period is 30 days](https://cloud.google.com/logging/quotas#logs_retention_periods).
|
||
|
|
||
|
:::
|
||
|
|
||
|
</tabItem>
|
||
|
<tabItem value="aws" label="AWS">
|
||
|
|
||
|
1. Open [AWS CloudWatch](https://console.aws.amazon.com/cloudwatch/home)
|
||
|
2. Select [Log Groups](https://console.aws.amazon.com/cloudwatch/home#logsV2:log-groups)
|
||
|
3. Select the log group that matches the name of your cluster.
|
||
|
4. Select the log stream for control or worker type nodes.
|
||
|
|
||
|
</tabItem>
|
||
|
</tabs>
|
||
|
|
||
|
### Node shell access
|
||
|
|
||
|
Debugging via a shell on a node is [directly supported by Kubernetes](https://kubernetes.io/docs/tasks/debug/debug-application/debug-running-pod/#node-shell-session).
|
||
|
|
||
|
1. Figure out which node to connect to:
|
||
|
|
||
|
```sh
|
||
|
kubectl get nodes
|
||
|
# or to see more information, such as IPs:
|
||
|
kubectl get nodes -o wide
|
||
|
```
|
||
|
|
||
|
2. Connect to the node:
|
||
|
|
||
|
```sh
|
||
|
kubectl debug node/constell-worker-xksa0-000000 -it --image=busybox
|
||
|
```
|
||
|
|
||
|
You will be presented with a prompt.
|
||
|
|
||
|
The nodes file system is mounted at `/host`.
|
||
|
|
||
|
3. Once finished, clean up the debug pod:
|
||
|
|
||
|
```sh
|
||
|
kubectl delete pod node-debugger-constell-worker-xksa0-000000-bjthj
|
||
|
```
|