188 lines
7.2 KiB
Markdown
188 lines
7.2 KiB
Markdown
---
|
|
stage: Configure
|
|
group: Configure
|
|
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
|
|
---
|
|
|
|
# Troubleshooting the GitLab agent for Kubernetes
|
|
|
|
When you are using the GitLab agent for Kubernetes, you might experience issues you need to troubleshoot.
|
|
|
|
You can start by viewing the service logs:
|
|
|
|
```shell
|
|
kubectl logs -f -l=app=gitlab-agent -n gitlab-agent
|
|
```
|
|
|
|
If you are a GitLab administrator, you can also view the [GitLab agent server logs](../../../administration/clusters/kas.md#troubleshooting).
|
|
|
|
## Transport: Error while dialing failed to WebSocket dial
|
|
|
|
```json
|
|
{
|
|
"level": "warn",
|
|
"time": "2020-11-04T10:14:39.368Z",
|
|
"msg": "GetConfiguration failed",
|
|
"error": "rpc error: code = Unavailable desc = connection error: desc = \"transport: Error while dialing failed to WebSocket dial: failed to send handshake request: Get \\\"https://gitlab-kas:443/-/kubernetes-agent\\\": dial tcp: lookup gitlab-kas on 10.60.0.10:53: no such host\""
|
|
}
|
|
```
|
|
|
|
This error occurs when there are connectivity issues between the `kas-address`
|
|
and your agent pod. To fix this issue, make sure the `kas-address` is accurate.
|
|
|
|
```json
|
|
{
|
|
"level": "error",
|
|
"time": "2021-06-25T21:15:45.335Z",
|
|
"msg": "Reverse tunnel",
|
|
"mod_name": "reverse_tunnel",
|
|
"error": "Connect(): rpc error: code = Unavailable desc = connection error: desc= \"transport: Error while dialing failed to WebSocket dial: expected handshake response status code 101 but got 301\""
|
|
}
|
|
```
|
|
|
|
This error occurs when the `kas-address` doesn't include a trailing slash. To fix this issue, make sure that the
|
|
`wss` or `ws` URL ends with a trailing slash, like `wss://GitLab.host.tld:443/-/kubernetes-agent/`
|
|
or `ws://GitLab.host.tld:80/-/kubernetes-agent/`.
|
|
|
|
## ValidationError(Deployment.metadata)
|
|
|
|
```json
|
|
{
|
|
"level": "info",
|
|
"time": "2020-10-30T08:56:54.329Z",
|
|
"msg": "Synced",
|
|
"project_id": "root/kas-manifest001",
|
|
"resource_key": "apps/Deployment/kas-test001/nginx-deployment",
|
|
"sync_result": "error validating data: [ValidationError(Deployment.metadata): unknown field \"replicas\" in io.k8s.apimachinery.pkg.apis.meta.v1.ObjectMeta, ValidationError(Deployment.metadata): unknown field \"selector\" in io.k8s.apimachinery.pkg.apis.meta.v1.ObjectMeta, ValidationError(Deployment.metadata): unknown field \"template\" in io.k8s.apimachinery.pkg.apis.meta.v1.ObjectMeta]"
|
|
}
|
|
```
|
|
|
|
This error occurs when a manifest file is malformed and Kubernetes can't
|
|
create the specified objects. Make sure that your manifest files are valid.
|
|
|
|
For additional troubleshooting, try to use the manifest files to create objects in Kubernetes directly.
|
|
|
|
## Error while dialing failed to WebSocket dial: failed to send handshake request
|
|
|
|
```json
|
|
{
|
|
"level": "warn",
|
|
"time": "2020-10-30T09:50:51.173Z",
|
|
"msg": "GetConfiguration failed",
|
|
"error": "rpc error: code = Unavailable desc = connection error: desc = \"transport: Error while dialing failed to WebSocket dial: failed to send handshake request: Get \\\"https://GitLabhost.tld:443/-/kubernetes-agent\\\": net/http: HTTP/1.x transport connection broken: malformed HTTP response \\\"\\\\x00\\\\x00\\\\x06\\\\x04\\\\x00\\\\x00\\\\x00\\\\x00\\\\x00\\\\x00\\\\x05\\\\x00\\\\x00@\\\\x00\\\"\""
|
|
}
|
|
```
|
|
|
|
This error occurs when you configured `wss` as `kas-address` on the agent side,
|
|
but the agent server is not available at `wss`. To fix this issue, make sure the
|
|
same schemes are configured on both sides.
|
|
|
|
## Decompressor is not installed for grpc-encoding
|
|
|
|
```json
|
|
{
|
|
"level": "warn",
|
|
"time": "2020-11-05T05:25:46.916Z",
|
|
"msg": "GetConfiguration.Recv failed",
|
|
"error": "rpc error: code = Unimplemented desc = grpc: Decompressor is not installed for grpc-encoding \"gzip\""
|
|
}
|
|
```
|
|
|
|
This error occurs when the version of the agent is newer that the version of the agent server (KAS).
|
|
To fix it, make sure that both `agentk` and the agent server are the same version.
|
|
|
|
## Certificate signed by unknown authority
|
|
|
|
```json
|
|
{
|
|
"level": "error",
|
|
"time": "2021-02-25T07:22:37.158Z",
|
|
"msg": "Reverse tunnel",
|
|
"mod_name": "reverse_tunnel",
|
|
"error": "Connect(): rpc error: code = Unavailable desc = connection error: desc = \"transport: Error while dialing failed to WebSocket dial: failed to send handshake request: Get \\\"https://GitLabhost.tld:443/-/kubernetes-agent/\\\": x509: certificate signed by unknown authority\""
|
|
}
|
|
```
|
|
|
|
This error occurs when your GitLab instance is using a certificate signed by an internal
|
|
certificate authority that is unknown to the agent.
|
|
|
|
To fix this issue, you can present the CA certificate file to the agent
|
|
by using a Kubernetes `configmap` and mount the file in the agent `/etc/ssl/certs` directory from where it
|
|
will be picked up automatically.
|
|
|
|
For example, if your internal CA certificate is `myCA.pem`:
|
|
|
|
```plaintext
|
|
kubectl -n gitlab-agent create configmap ca-pemstore --from-file=myCA.pem
|
|
```
|
|
|
|
Then in `resources.yml`:
|
|
|
|
```yaml
|
|
spec:
|
|
serviceAccountName: gitlab-agent
|
|
containers:
|
|
- name: agent
|
|
image: "registry.gitlab.com/gitlab-org/cluster-integration/gitlab-agent/agentk:<version>"
|
|
args:
|
|
- --token-file=/config/token
|
|
- --kas-address
|
|
- wss://kas.host.tld:443 # replace this line with the line below if using Omnibus GitLab or GitLab.com.
|
|
# - wss://gitlab.host.tld:443/-/kubernetes-agent/
|
|
# - wss://kas.gitlab.com # for GitLab.com users, use this KAS.
|
|
# - grpc://host.docker.internal:8150 # use this attribute when connecting from Docker.
|
|
volumeMounts:
|
|
- name: token-volume
|
|
mountPath: /config
|
|
- name: ca-pemstore-volume
|
|
mountPath: /etc/ssl/certs/myCA.pem
|
|
subPath: myCA.pem
|
|
volumes:
|
|
- name: token-volume
|
|
secret:
|
|
secretName: gitlab-agent-token
|
|
- name: ca-pemstore-volume
|
|
configMap:
|
|
name: ca-pemstore
|
|
items:
|
|
- key: myCA.pem
|
|
path: myCA.pem
|
|
```
|
|
|
|
Alternatively, you can mount the certificate file at a different location and specify it for the
|
|
`--ca-cert-file` agent parameter:
|
|
|
|
```yaml
|
|
containers:
|
|
- name: agent
|
|
image: "registry.gitlab.com/gitlab-org/cluster-integration/gitlab-agent/agentk:<version>"
|
|
args:
|
|
- --ca-cert-file=/tmp/myCA.pem
|
|
- --token-file=/config/token
|
|
- --kas-address
|
|
- wss://kas.host.tld:443 # replace this line with the line below if using Omnibus GitLab or GitLab.com.
|
|
# - wss://gitlab.host.tld:443/-/kubernetes-agent/
|
|
# - wss://kas.gitlab.com # for GitLab.com users, use this KAS.
|
|
# - grpc://host.docker.internal:8150 # use this attribute when connecting from Docker.
|
|
volumeMounts:
|
|
- name: token-volume
|
|
mountPath: /config
|
|
- name: ca-pemstore-volume
|
|
mountPath: /tmp/myCA.pem
|
|
subPath: myCA.pem
|
|
```
|
|
|
|
## Project not found
|
|
|
|
```json
|
|
{
|
|
"level ":"error ",
|
|
"time ":"2022-01-05T15:18:11.331Z",
|
|
"msg ":"GetObjectsToSynchronize.Recv failed ",
|
|
"mod_name ":"gitops ",
|
|
"error ":"rpc error: code = NotFound desc = project not found ",
|
|
}
|
|
```
|
|
|
|
This error occurs when the project where you keep your manifests is not public. To fix it, make sure your project is public or your manifest files
|
|
are stored in the repository where the agent is configured.
|