FluxCD v2 With GitOps Toolkit - Kubernetes Deployment And Sync Mechanism

// Инсталляция fluxcd
$ curl -s https://fluxcd.io/install.sh | sudo bash

$ flux --version
flux version 0.21.1

$ flux install

$ flux check
► checking prerequisites
✔ Kubernetes 1.22.2 >=1.19.0-0
► checking controllers
✔ helm-controller: deployment ready
► ghcr.io/fluxcd/helm-controller:v0.12.1
✔ kustomize-controller: deployment ready
► ghcr.io/fluxcd/kustomize-controller:v0.16.0
✔ notification-controller: deployment ready
► ghcr.io/fluxcd/notification-controller:v0.18.1
✔ source-controller: deployment ready
► ghcr.io/fluxcd/source-controller:v0.17.2
✔ all checks passed

#########
# Setup
#########

$ export INGRESS_HOST=$(minikube --profile ${PROFILE} ip)

$ echo ${INGRESS_HOST}

$ export GITHUB_USER=<YOUR_GITHUB_USERNAME>

$ export GITHUB_TOKEN=<YOUR_GITHUB_TOKEN>

##############################
# Creating environment repos
##############################

$ cd ~
$ mkdir -p flux-production/apps/
$ cd flux-production
$ git init

$ gh repo create --public flux-production -y

$ echo "# Production" | tee Readme.md
$ git add --all
$ git commit -m "Initial commit"
$ git push --set-upstream origin master

$ cd ~
$ mkdir -p flux-staging/apps/
$ cd flux-staging
$ git init

$ gh repo create --public flux-staging -y

$ echo "# Staging" | tee Readme.md
$ git add --all
$ git commit -m "Initial commit"
$ git push --set-upstream origin master

$ kubectl create namespace staging
$ kubectl create namespace production

#################
# Bootstrapping`
#################

$ cd ~

// Создается приватный репо flux-fleet
$ flux bootstrap github \
    --owner $GITHUB_USER \
    --repository flux-fleet \
    --branch master \
    --path apps \
    --personal

$ kubectl \
    --namespace flux-system \
    get pods

NAME                                       READY   STATUS    RESTARTS   AGE
helm-controller-f7c5b6c56-cktfx            1/1     Running   0          96s
kustomize-controller-759b77975b-qhjnq      1/1     Running   0          96s
notification-controller-77f68bf8f4-n84k2   1/1     Running   0          96s
source-controller-8457664f8f-hfwb5         1/1     Running   0          96s

$ cd ~

$ git clone [email protected]:${GITHUB_USER}/flux-fleet.git

$ cd flux-fleet

$ ls -1 apps

$ ls -1 apps/flux-system

####################
# Creating sources`
####################

$ flux create source git staging \
    --url https://github.com/${GITHUB_USER}/flux-staging \
    --branch master \
    --interval 30s \
    --export \
    | tee apps/staging.yaml

$ flux create source git production \
    --url https://github.com/$GITHUB_USER/flux-production \
    --branch master \
    --interval 30s \
    --export \
    | tee apps/production.yaml

$ flux create source git devops-toolkit \
    --url https://github.com/vfarcic/devops-toolkit \
    --branch master \
    --interval 30s \
    --export \
    | tee apps/devops-toolkit.yaml

$ flux create kustomization staging \
    --source staging \
    --path "./" \
    --prune true \
    --interval 10m \
    --export \
    | tee -a apps/staging.yaml

$ flux create kustomization production \
    --source production \
    --path "./" \
    --prune true \
    --interval 10m \
    --export \
    | tee -a apps/production.yaml

$ git add --all

$ git commit -m "Added environments"

$ git push

$ watch flux get sources git
$ watch flux get kustomizations

###############################
# Deploying the first release
###############################

$ cd ~/flux-staging

$ echo "image:
    tag: 2.9.9
ingress:
    host: staging.devops-toolkit.${INGRESS_HOST}.nip.io" \
    | tee values.yaml

$ flux create helmrelease \
 devops-toolkit-staging \
 --source GitRepository/devops-toolkit \
 --values values.yaml \
 --chart "helm" \
 --target-namespace staging \
 --interval 30s \
 --export \
 | tee apps/devops-toolkit.yaml

$ rm values.yaml

$ git add --all

$ git commit -m "Initial commit"

$ git push

$ watch flux get helmreleases

NAME READY MESSAGE
REVISION SUSPENDED
devops-toolkit-staging False HelmChart 'flux-system/flux-system-devops-toolkit-staging' is not ready False

$ flux logs
2021-11-05T21:39:41.581Z error HelmRelease/devops-toolkit-staging.flux-system - Reconciler error Helm install failed: unable to build kubernetes objects from release manifest: unable to recognize "": no matches for kind "Ingress" in version "extensions/v1beta1"

$ kubectl \
    --namespace staging \
    get pods

NAME READY STATUS RESTARTS AGE
staging-devops-toolkit-staging-devops-toolkit-76b88d8899-j9b8x 1/1 Running 0 3m5s

##########################
# Deploying new releases
##########################

$ cd ~/flux-staging/

$ cat apps/devops-toolkit.yaml \
 | sed -e "s@tag: 2.9.9@tag: 2.9.17@g" \
 | tee apps/devops-toolkit.yaml

$ git add --all

$ git commit -m "Upgrade to 2.9.17"

$ git push

$ watch kubectl --namespace staging \
 get pods

$ watch kubectl --namespace staging \
 get deployment staging-devops-toolkit-devops-toolkit \
 --output jsonpath="{.spec.template.spec.containers[0].image}"

###########################
# Promoting to production
###########################

$ cd ~/flux-production

$ echo "image:
    tag: 2.9.17
ingress:
    host: devops-toolkit.$INGRESS_HOST.nip.io" \
    | tee values.yaml

$ flux create helmrelease \
 devops-toolkit-production \
 --source GitRepository/devops-toolkit \
 --values values.yaml \
 --chart "helm" \
 --target-namespace production \
 --interval 30s \
 --export \
 | tee apps/devops-toolkit.yaml

$ rm values.yaml

$ git add --all

$ git commit -m "Initial commit"

$ git push

$ watch flux get helmreleases

$ kubectl --namespace production \
 get pods

#########################
# Destroying Everything
#########################

$ minikube delete

$ cd ..

$ cd flux-fleet

$ gh repo view --web

$ # Delete the repo

$ cd ..

$ rm -rf flux-fleet

$ cd flux-staging

$ gh repo view --web

$ # Delete the repo

$ cd ..

$ rm -rf flux-staging

$ cd flux-production

$ gh repo view --web

# Delete the repo

$ cd ..

$ rm -rf flux-production