mirror of https://github.com/helm/helm
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
233 lines
11 KiB
233 lines
11 KiB
# Installation: Frequently Asked Questions
|
|
|
|
This section tracks some of the more frequently encountered issues with installing
|
|
or getting started with Helm.
|
|
|
|
**We'd love your help** making this document better. To add, correct, or remove
|
|
information, [file an issue](https://github.com/kubernetes/helm/issues) or
|
|
send us a pull request.
|
|
|
|
## Downloading
|
|
|
|
I want to know more about my downloading options.
|
|
|
|
**Q: I can't get to GitHub releases of the newest Helm. Where are they?**
|
|
|
|
A: We no longer use GitHub releases. Binaries are now stored in a
|
|
[GCS public bucket](https://kubernetes-helm.storage.googleapis.com).
|
|
|
|
**Q: Why aren't there Debian/Fedora/... native packages of Helm?**
|
|
|
|
We'd love to provide these or point you toward a trusted provider. If you're
|
|
interested in helping, we'd love it. This is how the Homebrew formula was
|
|
started.
|
|
|
|
**Q: Why do you provide a `curl ...|bash` script?**
|
|
|
|
A: There is a script in our repository (`scripts/get`) that can be executed as
|
|
a `curl ..|bash` script. The transfers are all protected by HTTPS, and the script
|
|
does some auditing of the packages it fetches. However, the script has all the
|
|
usual dangers of any shell script.
|
|
|
|
We provide it because it is useful, but we suggest that users carefully read the
|
|
script first. What we'd really like, though, are better packaged releases of
|
|
Helm.
|
|
|
|
## Installing
|
|
|
|
I'm trying to install Helm/Tiller, but something is not right.
|
|
|
|
**Q: How do I put the Helm client files somewhere other than ~/.helm?**
|
|
|
|
Set the `$HELM_HOME` environment variable, and then run `helm init`:
|
|
|
|
```console
|
|
export HELM_HOME=/some/path
|
|
helm init --client-only
|
|
```
|
|
|
|
Note that if you have existing repositories, you will need to re-add them
|
|
with `helm repo add...`.
|
|
|
|
**Q: How do I configure Helm, but not install Tiller?**
|
|
|
|
A: By default, `helm init` will ensure that the local `$HELM_HOME` is configured,
|
|
and then install Tiller on your cluster. To locally configure, but not install
|
|
Tiller, use `helm init --client-only`.
|
|
|
|
**Q: How do I manually install Tiller on the cluster?**
|
|
|
|
A: Tiller is installed as a Kubernetes `deployment`. You can get the manifest
|
|
by running `helm init --dry-run --debug`, and then manually install it with
|
|
`kubectl`. It is suggested that you do not remove or change the labels on that
|
|
deployment, as they are sometimes used by supporting scripts and tools.
|
|
|
|
**Q: Why do I get `Error response from daemon: target is unknown` during Tiller install?**
|
|
|
|
A: Users have reported being unable to install Tiller on Kubernetes instances that
|
|
are using Docker 1.13.0. The root cause of this was a bug in Docker that made
|
|
that one version incompatible with images pushed to the Docker registry by
|
|
earlier versions of Docker.
|
|
|
|
This [issue](https://github.com/docker/docker/issues/30083) was fixed shortly
|
|
after the release, and is available in Docker 1.13.1-RC1 and later.
|
|
|
|
## Getting Started
|
|
|
|
I successfully installed Helm/Tiller but I can't use it.
|
|
|
|
**Q: Trying to use Helm, I get the error "client transport was broken"**
|
|
|
|
```
|
|
E1014 02:26:32.885226 16143 portforward.go:329] an error occurred forwarding 37008 -> 44134: error forwarding port 44134 to pod tiller-deploy-2117266891-e4lev_kube-system, uid : unable to do port forwarding: socat not found.
|
|
2016/10/14 02:26:32 transport: http2Client.notifyError got notified that the client transport was broken EOF.
|
|
Error: transport is closing
|
|
```
|
|
|
|
A: This is usually a good indication that Kubernetes is not set up to allow port forwarding.
|
|
|
|
Typically, the missing piece is `socat`. If you are running CoreOS, we have been
|
|
told that it may have been misconfigured on installation. The CoreOS team
|
|
recommends reading this:
|
|
|
|
- https://coreos.com/kubernetes/docs/latest/kubelet-wrapper.html
|
|
|
|
Here are a few resolved issues that may help you get started:
|
|
|
|
- https://github.com/kubernetes/helm/issues/1371
|
|
- https://github.com/kubernetes/helm/issues/966
|
|
|
|
**Q: Trying to use Helm, I get the error "lookup XXXXX on 8.8.8.8:53: no such host"**
|
|
|
|
```
|
|
Error: Error forwarding ports: error upgrading connection: dial tcp: lookup kube-4gb-lon1-02 on 8.8.8.8:53: no such host
|
|
```
|
|
|
|
A: We have seen this issue with Ubuntu and Kubeadm in multi-node clusters. The
|
|
issue is that the nodes expect certain DNS records to be obtainable via global
|
|
DNS. Until this is resolved upstream, you can work around the issue as
|
|
follows. On each of the control plane nodes:
|
|
|
|
1) Add entries to `/etc/hosts`, mapping your hostnames to their public IPs
|
|
2) Install `dnsmasq` (e.g. `apt install -y dnsmasq`)
|
|
3) Remove the k8s api server container (kubelet will recreate it)
|
|
4) Then `systemctl restart docker` (or reboot the node) for it to pick up the /etc/resolv.conf changes
|
|
|
|
See this issue for more information: https://github.com/kubernetes/helm/issues/1455
|
|
|
|
**Q: On GKE (Google Container Engine) I get "No SSH tunnels currently open"**
|
|
|
|
```
|
|
Error: Error forwarding ports: error upgrading connection: No SSH tunnels currently open. Were the targets able to accept an ssh-key for user "gke-[redacted]"?
|
|
```
|
|
|
|
Another variation of the error message is:
|
|
|
|
|
|
```
|
|
Unable to connect to the server: x509: certificate signed by unknown authority
|
|
|
|
```
|
|
|
|
A: The issue is that your local Kubernetes config file must have the correct credentials.
|
|
|
|
When you create a cluster on GKE, it will give you credentials, including SSL
|
|
certificates and certificate authorities. These need to be stored in a Kubernetes
|
|
config file (Default: `~/.kube/config` so that `kubectl` and `helm` can access
|
|
them.
|
|
|
|
**Q: When I run a Helm command, I get an error about the tunnel or proxy**
|
|
|
|
A: Helm uses the Kubernetes proxy service to connect to the Tiller server.
|
|
If the command `kubectl proxy` does not work for you, neither will Helm.
|
|
Typically, the error is related to a missing `socat` service.
|
|
|
|
**Q: Tiller crashes with a panic**
|
|
|
|
When I run a command on Helm, Tiller crashes with an error like this:
|
|
|
|
```
|
|
Tiller is listening on :44134
|
|
Probes server is listening on :44135
|
|
Storage driver is ConfigMap
|
|
Cannot initialize Kubernetes connection: the server has asked for the client to provide credentials 2016-12-20 15:18:40.545739 I | storage.go:37: Getting release "bailing-chinchilla" (v1) from storage
|
|
panic: runtime error: invalid memory address or nil pointer dereference
|
|
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x8053d5]
|
|
|
|
goroutine 77 [running]:
|
|
panic(0x1abbfc0, 0xc42000a040)
|
|
/usr/local/go/src/runtime/panic.go:500 +0x1a1
|
|
k8s.io/helm/vendor/k8s.io/kubernetes/pkg/client/unversioned.(*ConfigMaps).Get(0xc4200c6200, 0xc420536100, 0x15, 0x1ca7431, 0x6, 0xc42016b6a0)
|
|
/home/ubuntu/.go_workspace/src/k8s.io/helm/vendor/k8s.io/kubernetes/pkg/client/unversioned/configmap.go:58 +0x75
|
|
k8s.io/helm/pkg/storage/driver.(*ConfigMaps).Get(0xc4201d6190, 0xc420536100, 0x15, 0xc420536100, 0x15, 0xc4205360c0)
|
|
/home/ubuntu/.go_workspace/src/k8s.io/helm/pkg/storage/driver/cfgmaps.go:69 +0x62
|
|
k8s.io/helm/pkg/storage.(*Storage).Get(0xc4201d61a0, 0xc4205360c0, 0x12, 0xc400000001, 0x12, 0x0, 0xc420200070)
|
|
/home/ubuntu/.go_workspace/src/k8s.io/helm/pkg/storage/storage.go:38 +0x160
|
|
k8s.io/helm/pkg/tiller.(*ReleaseServer).uniqName(0xc42002a000, 0x0, 0x0, 0xc42016b800, 0xd66a13, 0xc42055a040, 0xc420558050, 0xc420122001)
|
|
/home/ubuntu/.go_workspace/src/k8s.io/helm/pkg/tiller/release_server.go:577 +0xd7
|
|
k8s.io/helm/pkg/tiller.(*ReleaseServer).prepareRelease(0xc42002a000, 0xc42027c1e0, 0xc42002a001, 0xc42016bad0, 0xc42016ba08)
|
|
/home/ubuntu/.go_workspace/src/k8s.io/helm/pkg/tiller/release_server.go:630 +0x71
|
|
k8s.io/helm/pkg/tiller.(*ReleaseServer).InstallRelease(0xc42002a000, 0x7f284c434068, 0xc420250c00, 0xc42027c1e0, 0x0, 0x31a9, 0x31a9)
|
|
/home/ubuntu/.go_workspace/src/k8s.io/helm/pkg/tiller/release_server.go:604 +0x78
|
|
k8s.io/helm/pkg/proto/hapi/services._ReleaseService_InstallRelease_Handler(0x1c51f80, 0xc42002a000, 0x7f284c434068, 0xc420250c00, 0xc42027c190, 0x0, 0x0, 0x0, 0x0, 0x0)
|
|
/home/ubuntu/.go_workspace/src/k8s.io/helm/pkg/proto/hapi/services/tiller.pb.go:747 +0x27d
|
|
k8s.io/helm/vendor/google.golang.org/grpc.(*Server).processUnaryRPC(0xc4202f3ea0, 0x28610a0, 0xc420078000, 0xc420264690, 0xc420166150, 0x288cbe8, 0xc420250bd0, 0x0, 0x0)
|
|
/home/ubuntu/.go_workspace/src/k8s.io/helm/vendor/google.golang.org/grpc/server.go:608 +0xc50
|
|
k8s.io/helm/vendor/google.golang.org/grpc.(*Server).handleStream(0xc4202f3ea0, 0x28610a0, 0xc420078000, 0xc420264690, 0xc420250bd0)
|
|
/home/ubuntu/.go_workspace/src/k8s.io/helm/vendor/google.golang.org/grpc/server.go:766 +0x6b0
|
|
k8s.io/helm/vendor/google.golang.org/grpc.(*Server).serveStreams.func1.1(0xc420124710, 0xc4202f3ea0, 0x28610a0, 0xc420078000, 0xc420264690)
|
|
/home/ubuntu/.go_workspace/src/k8s.io/helm/vendor/google.golang.org/grpc/server.go:419 +0xab
|
|
created by k8s.io/helm/vendor/google.golang.org/grpc.(*Server).serveStreams.func1
|
|
/home/ubuntu/.go_workspace/src/k8s.io/helm/vendor/google.golang.org/grpc/server.go:420 +0xa3
|
|
```
|
|
|
|
A: Check your security settings for Kubernetes.
|
|
|
|
A panic in Tiller is almost always the result of a failure to negotiate with the
|
|
Kubernetes API server (at which point Tiller can no longer do anything useful, so
|
|
it panics and exits).
|
|
|
|
Often, this is a result of authentication failing because the Pod in which Tiller
|
|
is running does not have the right token.
|
|
|
|
To fix this, you will need to change your Kubernetes configuration. Make sure
|
|
that `--service-account-private-key-file` from `controller-manager` and
|
|
`--service-account-key-file` from apiserver point to the _same_ x509 RSA key.
|
|
|
|
|
|
## Upgrading
|
|
|
|
My Helm used to work, then I upgrade. Now it is broken.
|
|
|
|
**Q: After upgrade, I get the error "Client version is incompatible". What's wrong?**
|
|
|
|
Tiller and Helm have to negotiate a common version to make sure that they can safely
|
|
communicate without breaking API assumptions. That error means that the version
|
|
difference is too great to safely continue. Typically, you need to upgrade
|
|
Tiller manually for this.
|
|
|
|
The [Installation Guide](install.md) has definitive information about safely
|
|
upgrading Helm and Tiller.
|
|
|
|
The rules for version numbers are as follows:
|
|
|
|
- Pre-release versions are incompatible with everything else. `Alpha.1` is incompatible with `Alpha.2`.
|
|
- Patch revisions _are compatible_: 1.2.3 is compatible with 1.2.4
|
|
- Minor revisions _are not compatible_: 1.2.0 is not compatible with 1.3.0,
|
|
though we may relax this constraint in the future.
|
|
- Major revisions _are not compatible_: 1.0.0 is not compatible with 2.0.0.
|
|
|
|
## Uninstalling
|
|
|
|
I am trying to remove stuff.
|
|
|
|
**Q: When I delete the Tiller deployment, how come all the releases are still there?**
|
|
|
|
Releases are stored in ConfigMaps inside of the `kube-system` namespace. You will
|
|
have to manually delete them to get rid of the record.
|
|
|
|
**Q: I want to delete my local Helm. Where are all its files?**
|
|
|
|
Along with the `helm` binary, Helm stores some files in `$HELM_HOME`, which is
|
|
located by default in `~/.helm`.
|