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merged 2 commits into from
Sep 2, 2024
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Add argocd install instructions #155

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59a0a9b
Add argocd install instructions
marcelldls Aug 30, 2024
b7641c4
Merge branch 'k8s-tutorials' into argocd-install
gilesknap Sep 2, 2024
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26 changes: 26 additions & 0 deletions docs/tutorials/setup_k8s.md
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Expand Up @@ -131,6 +131,32 @@ kubectl config set-context t03-beamline --namespace=t03-beamline --user=default
kubectl config use-context t03-beamline
```

### Set up Argo CD

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. As per <https://argo-cd.readthedocs.io/en/stable/> it can be installed into the cluster as follows:

```
kubectl create namespace argocd
kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml
```

To access the gui through a browser on `https://localhost:8080/`:
```
kubectl port-forward svc/argocd-server -n argocd 8080:443
```

The user is `admin` and the password can be retrived using:
```
kubectl -n argocd get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 --decode ; echo
```

To install the `argocd` cli tool:
```
curl -sSL -o argocd-linux-amd64 https://github.com/argoproj/argo-cd/releases/latest/download/argocd-linux-amd64
sudo install -m 555 argocd-linux-amd64 /usr/local/bin/argocd
rm argocd-linux-amd64
```

### Install persistent volume support

As per <https://docs.k3s.io/storage/>, the "Longhorn" distributed block storage system can be set up in our cluster. This is done in order to get support for ReadWriteMany persistent volume claims, which is not supported by the out of the box "Local Path Provisioner".
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