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feat: improve docs and cluster dir

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Devin Buhl committed 2021-04-14 11:49:53 -04:00
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commit 7a770b9ab4
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.sops.yaml
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@@ -2,3 +2,5 @@
creation_rules:
- encrypted_regex: '((?i)(pass|secret($|[^N])|key|token|^data$|^stringData))'
pgp: >-
$FLUX_KEY_FP,
$PERSONAL_KEY_FP
README.md
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@@ -17,20 +17,166 @@ Bare metal or VMs with a modern operating system like Ubuntu, Debian or CentOS.
### :wrench:  Tools
| Tool | Purpose | Required |
|--------------------------------------------------------|---------------------------------------------------------------------|:--------:|
| [k3sup](https://github.com/alexellis/k3sup) | Tool to install k3s on your nodes | ✅ |
| [flux](https://toolkit.fluxcd.io/) | Operator that manages your k8s cluster based on your Git repository | ✅ |
| [SOPS](https://github.com/mozilla/sops) | Encrypts k8s secrets with GnuPG | ✅ |
| [GnuPG](https://gnupg.org/) | Encrypts and signs your data | ✅ |
| [direnv](https://github.com/direnv/direnv) | Exports env vars based on present working directory | ❌ |
| [pre-commit](https://github.com/pre-commit/pre-commit) | Keeps formatting consistency across your files | ❌ |
| Tool | Purpose | Required |
|--------------------------------------------------------------------|---------------------------------------------------------------------|:--------:|
| [k3sup](https://github.com/alexellis/k3sup) | Tool to install k3s on your nodes | ✅ |
| [flux](https://toolkit.fluxcd.io/) | Operator that manages your k8s cluster based on your Git repository | ✅ |
| [kustomize](https://kustomize.io/) | Template-free way to customize application configuration | ✅ |
| [SOPS](https://github.com/mozilla/sops) | Encrypts k8s secrets with GnuPG | ✅ |
| [GnuPG](https://gnupg.org/) | Encrypts and signs your data | ✅ |
| [pinentry](https://gnupg.org/related_software/pinentry/index.html) | Allows GnuPG to read passphrases and PIN numbers | ✅ |
| [direnv](https://github.com/direnv/direnv) | Exports env vars based on present working directory | ❌ |
| [pre-commit](https://github.com/pre-commit/pre-commit) | Keeps formatting consistency across your files | ❌ |
## :rocket:  Installation
### :sailboat:  k3sup
Very first step will be to create a new repository by clicking the **Use this template** button on this page.
Bootstrap your nodes with k3s using k3sup
### :key:  Setting up GnuPG keys
1. Create a Personal GPG Key, password protected, and export the fingerprint
```sh
export GPG_TTY=$(tty)
export PERONAL_KEY_NAME="First name Last name (location) <email>"
gpg --batch --full-generate-key <<EOF
Key-Type: 1
Key-Length: 4096
Subkey-Type: 1
Subkey-Length: 4096
Expire-Date: 0
Name-Real: ${PERONAL_KEY_NAME}
EOF
gpg --list-secret-keys "${PERONAL_KEY_NAME}"
# pub rsa4096 2021-03-11 [SC]
# 772154FFF783DE317KLCA0EC77149AC618D75581
# uid [ultimate] k8s@home (Macbook) <k8s-at-home@gmail.com>
# sub rsa4096 2021-03-11 [E]
export PERSONAL_KEY_FP=772154FFF783DE317KLCA0EC77149AC618D75581
```
2. Create a Flux GPG Key and export the fingerprint
```sh
export GPG_TTY=$(tty)
export FLUX_KEY_NAME="Cluster name (Flux) <email>"
gpg --batch --full-generate-key <<EOF
%no-protection
Key-Type: 1
Key-Length: 4096
Subkey-Type: 1
Subkey-Length: 4096
Expire-Date: 0
Name-Real: ${KEY_NAME}
EOF
gpg --list-secret-keys "${FLUX_KEY_NAME}"
# pub rsa4096 2021-03-11 [SC]
# AB675CE4CC64251G3S9AE1DAA88ARRTY2C009E2D
# uid [ultimate] Home cluster (Flux) <k8s-at-home@gmail.com>
# sub rsa4096 2021-03-11 [E]
export FLUX_KEY_FP=AB675CE4CC64251G3S9AE1DAA88ARRTY2C009E2D
```
### :sailboat:&nbsp; Installing k3s with k3sup
1. Ensure you are able to SSH into you nodes with using your private ssh key. This is how k3sup is able to connect to your remote node.
2. Install the master node
```sh
k3sup install \
--host=169.254.1.1 \
--user=k8s-at-home \
--k3s-version=v1.20.5+k3s1 \
--k3s-extra-args="--disable servicelb --disable traefik"
```
3. Join a worker node(s) (optional)
```sh
k3sup join \
--host=169.254.1.2 \
--server-host=169.254.1.1 \
--k3s-version=v1.20.5+k3s1 \
--user=k8s-at-home
```
4. Verify nodes are online
```sh
kubectl --kubeconfig=./kubeconfig get nodes
# NAME STATUS ROLES AGE VERSION
# k8s-master-a Ready control-plane,master 4d14h v1.20.5+k3s1
# k8s-worker-a Ready worker 4d14h v1.20.5+k3s1
```
### GitOps with Flux
1. Pre-create the namespace
```sh
kubectl --kubeconfig=./kubeconfig create namespace flux-system --dry-run=client -o yaml | kubectl apply -f -
```
1. Add the Flux GPG key in-order for Flux to decrypt SOPS secrets
```sh
gpg --export-secret-keys --armor "${FLUX_KEY_FP}" |
kubectl --kubeconfig=./kubeconfig create secret generic sops-gpg \
--namespace=flux-system \
--from-file=sops.asc=/dev/stdin
```
3. Update files using `envsubst` or by updating them manually
```sh
export BOOTSTRAP_GITHUB_REPOSITORY="k8s-at-home/home-cluster"
export BOOTSTRAP_DOMAIN="k8s-at-home.com"
export BOOTSTRAP_METALLB_LB_RANGE="169.254.1.10-169.254.1.20"
envsubst < ./.sops.yaml
envsubst < ./cluster/cluster-secrets.yaml
envsubst < ./cluster/cluster-settings.yaml
envsubst < ./cluster/base/flux-system/gotk-sync.yaml
```
4. **Verify** all the above files have the correct information present
5. Encrypt `cluster-settings.yaml` with SOPS
```sh
sops --encrypt --in-place ./cluster/base/cluster-secrets.yaml
```
6. **Verify** this file **is encrypted** with SOPS
7. Push you changes to git
```sh
git add -A
git commit -m "initial commit"
git push
```
8. Install Flux
```sh
kubectl --kubeconfig=./kubeconfig --kustomize=./cluster/base/flux-system
```
## Post installation
### pre-commit
```sh
pre-commit install-hooks
```
## :handshake:&nbsp; Thanks
cluster/base/apps.yaml
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---
apiVersion: kustomize.toolkit.fluxcd.io/v1beta1
kind: Kustomization
metadata:
name: apps
namespace: flux-system
spec:
interval: 10m0s
dependsOn:
- name: core
path: ./cluster/apps
prune: true
sourceRef:
kind: GitRepository
name: flux-system
decryption:
provider: sops
secretRef:
name: sops-gpg
postBuild:
substitute: {}
substituteFrom:
- kind: ConfigMap
name: cluster-settings
- kind: Secret
name: cluster-secrets
cluster/base/cluster-secrets.yaml
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@@ -0,0 +1,8 @@
# yamllint disable
apiVersion: v1
kind: Secret
metadata:
name: cluster-secrets
namespace: flux-system
stringData:
SECRET_DOMAIN: $BOOTSTRAP_DOMAIN
cluster/base/cluster-settings.yaml
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@@ -0,0 +1,8 @@
---
apiVersion: v1
kind: ConfigMap
metadata:
name: cluster-settings
namespace: flux-system
data:
METALLB_LB_RANGE: $BOOTSTRAP_METALLB_LB_RANGE
cluster/base/core.yaml
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---
apiVersion: kustomize.toolkit.fluxcd.io/v1beta1
kind: Kustomization
metadata:
name: core
namespace: flux-system
spec:
interval: 10m0s
path: ./cluster/core
prune: false
sourceRef:
kind: GitRepository
name: flux-system
decryption:
provider: sops
secretRef:
name: sops-gpg
postBuild:
substitute: {}
substituteFrom:
- kind: ConfigMap
name: cluster-settings
- kind: Secret
name: cluster-secrets
cluster/base/flux-system/charts/helm/bitnami-charts.yaml
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@@ -0,0 +1,10 @@
---
apiVersion: source.toolkit.fluxcd.io/v1beta1
kind: HelmRepository
metadata:
name: bitnami-charts
namespace: flux-system
spec:
interval: 30m
url: https://charts.bitnami.com/bitnami
timeout: 2m
cluster/base/flux-system/charts/helm/ingress-nginx-charts.yaml
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@@ -0,0 +1,10 @@
---
apiVersion: source.toolkit.fluxcd.io/v1beta1
kind: HelmRepository
metadata:
name: ingress-nginx-charts
namespace: flux-system
spec:
interval: 30m
url: https://kubernetes.github.io/ingress-nginx
timeout: 2m
cluster/base/flux-system/charts/helm/jetstack-charts.yaml
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---
apiVersion: source.toolkit.fluxcd.io/v1beta1
kind: HelmRepository
metadata:
name: jetstack-charts
namespace: flux-system
spec:
interval: 30m
url: https://charts.jetstack.io/
timeout: 2m
cluster/base/flux-system/charts/helm/k8s-at-home-charts.yaml
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@@ -0,0 +1,10 @@
---
apiVersion: source.toolkit.fluxcd.io/v1beta1
kind: HelmRepository
metadata:
name: k8s-at-home-charts
namespace: flux-system
spec:
interval: 30m
url: https://k8s-at-home.com/charts/
timeout: 2m
cluster/base/flux-system/charts/helm/kustomization.yaml
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apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
- bitnami-charts.yaml
- ingress-nginx-charts.yaml
- jetstack-charts.yaml
- k8s-at-home-charts.yaml
cluster/base/flux-system/charts/kustomization.yaml
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apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
- helm
cluster/base/flux-system/gotk-components.yaml
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cluster/base/flux-system/gotk-sync.yaml
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---
apiVersion: source.toolkit.fluxcd.io/v1beta1
kind: GitRepository
metadata:
name: flux-system
namespace: flux-system
spec:
interval: 1m0s
ref:
branch: main
secretRef:
name: flux-system
url: ssh://git@github.com/$BOOTSTRAP_GITHUB_REPOSITORY
---
apiVersion: kustomize.toolkit.fluxcd.io/v1beta1
kind: Kustomization
metadata:
name: flux-system
namespace: flux-system
spec:
interval: 10m0s
path: ./cluster/base
prune: true
sourceRef:
kind: GitRepository
name: flux-system
validation: client
decryption:
provider: sops
secretRef:
name: sops-gpg
cluster/base/flux-system/kustomization.yaml
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@@ -0,0 +1,6 @@
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources:
- gotk-components.yaml
- gotk-sync.yaml
- charts