FluxCD
Gitops model for Kubernetes using Flux v2
Categories:
Organization
Manifests files :
kubernetes/basedirectory contains manifests for all componentskubernetes/overlays/**directory contains Kustomize overlays
Flux components are deployed for each cluster on clusters/<CLOUD>/<ENV>/ :
clusters/<CLOUD>/<ENV>/flux-system: Flux core componentsclusters/<CLOUD>/<ENV>/*.yaml: Flux Kustomization files for components
Bootstrap
FluxCD
❯ make bootstrap-fluxcd ENV=<environment> CLOUD=<cloud provider> BRANCH=<git branch to use>
Stacks
You can list stack installed:
❯ kubectl -n flux-system get kustomization -l "app.kubernetes.io/component=portefaix-stack"
NAME AGE READY STATUS
core 107m True Applied revision: feat/weave-gitops/2ea4d23f1ae31bfb6afbe57a4662b5990dcf3307
observability 109m True Applied revision: feat/weave-gitops/2ea4d23f1ae31bfb6afbe57a4662b5990dcf3307
And Helm releases:
❯ helm list -A
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
alertmanager-mixin monitoring 1 2022-08-08 10:57:51.540267795 +0000 UTC deployed alertmanager-mixin-0.6.0 0.23.0
kube-prometheus-stack monitoring 1 2022-08-08 10:57:52.701498295 +0000 UTC deployed kube-prometheus-stack-35.0.3 0.56.0
kube-state-metrics-mixin monitoring 1 2022-08-08 10:57:52.285323133 +0000 UTC deployed kube-state-metrics-mixin-0.10.0 2.2.4
kubernetes-mixin monitoring 1 2022-08-08 10:57:52.528376605 +0000 UTC deployed kubernetes-mixin-0.8.0 0.8.0
kyverno flux-system 1 2022-08-08 09:00:31.649605165 +0000 UTC deployed kyverno-crds-v2.0.3 v1.4.3
metrics-server kube-system 1 2022-08-08 10:57:41.851963826 +0000 UTC failed metrics-server-3.8.2 0.6.1
prometheus-mixin monitoring 1 2022-08-08 10:57:53.019370201 +0000 UTC deployed prometheus-mixin-0.10.0 2.31.1
prometheus-operator-mixin monitoring 1 2022-08-08 10:57:53.815678548 +0000 UTC deployed prometheus-operator-mixin-0.8.0 0.52.1
weawe-gitops flux-system 1 2022-08-08 07:49:32.97390968 +0000 UTC deployed weave-gitops-2.2.5 v0.9.1
Secrets
File
Create a Kubernetes secret file from sensitive file.
Ex: for Thanos configuration :
❯ cat .secrets/aws/object-store.yaml
type: S3
config:
bucket: xxxxxxxxxxx
endpoint: s3.eu-west-3.amazonaws.com
region: eu-west-3
❯ make kubernetes-secret NAME=thanos-object-storage NAMESPACE=monitoring FILE=.secrets/aws/object-store.yaml > thanos-object-storage.yaml
Encrypt
Encrypt the file using Sops:
❯ make sops-encrypt ENV=staging CLOUD=aws FILE=thanos-object-storage.yaml
You can now safely store this file into Git.
❯ mv thanos-object-storage.yaml kubernetes/overlays/staging/monitoring/thanos/
Decrypt
Check you can decrypt the file:
❯ make sops-decrypt FILE=kubernetes/overlays/staging/monitoring/thanos/thanos-object-storage.yaml
apiVersion: v1
data:
object-store.yaml: xxxxxxxxxxx
kind: Secret
metadata:
creationTimestamp: null
name: thanos-object-storage
namespace: monitoring
CI/CD
AGE
Work In Progress
PGP
Generate a GPG key with OpenPGP without specifying a passphrase:
❯ gpg --full-generate-key
Real name: nlamirault
Email address: nlamirault@users.noreply.github.com
Comment:
You selected this USER-ID:
"nlamirault <nlamirault@users.noreply.github.com>"
Change (N)ame, (C)omment, (E)mail or (O)kay/(Q)uit? O
Retrieve the GPG key ID:
❯ gpg --export-secret-keys \
--armor FC5BB3323309486AC8DA477CEC6421C7C33D2301
Add this output into a Github Secret SOPS_GPG_KEY.
On the e2e Github Action workflow, we create a Kubernetes secret sops-gpg
which will be used by Flux.
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