Agenda: How DT deploys ONAP with the help of Argo CD

Who I am

I am Flori from Frankfurt, Germany (remember, there was I ONAP release named Frankfurt as well).

I am at DT since 2013. Currently I am the PO of the "System Team" of TNAP.

My biggest professional success: I kickstarted the Magenta Speaker in DT, where I was the Architect/Techlead (which was a.k.a Orange's Djingo https://www.telekom.com/en/media/media-information/consumer-products/with-smart-speaker-your-home-listens-to-your-command-508276).

My biggest challenge, I try to eat all the cake & chocolate of the world (only the good one)

You can find me on twitter: https://twitter.com/florianbachmann

Argo CD

There is no CI/CD
There are Cl and CD!

• The official Argo CD page:
  • https://argoproj.github.io/cd
• So Argo CD helps us, doing GitOPs, but what is GitOPs, and basically why is it important, was perfectly answered by Cornelia Davis
  • KubeCon: GitOps Is Likely More Than You Think It Is - Cornelia Davis, Weaveworks
• A more recent recorded version of that talk exists as well:
  • GitOps Is Likely More Than You Think It Is (only 21 views, I was one of them). Both talks are 99% similar, but the first one is more on point.
• The slides of the two talks can be found here:
  • https://static.sched.com/hosted_files/kccncna20/39/GitOpsIsMoreThanYouThink.pdf
  • Remark:
    • Show slide 3 - What is GitOps
    • Show slide 17 - Decouple CI from CD
• Argo CD - a tool for CD, but what says the CNCF Landscape about it.
  • https://landscape.cncf.io/

• CNCF Landscape - Continuous Integration & Delivery

  • https://landscape.cncf.io/

• There are at least 44 tools regarding CI & CD. (checked 24 Nov 2021 )

  • https://landscape.cncf.io/card-mode?category=continuous-integration-delivery&grouping=category

• Why Argo and not Flux

  • Flux CD joins forces with Argo CD project

• And consider: CNCF - The Trail Map 

  • https://raw.githubusercontent.com/cncf/trailmap/master/CNCF_TrailMap_latest.png

• Argo CD at TNAP
  • Recently Andreas and Marc gave a talk:

    • LFN Webinar: Deutsche Telekom Deploys ONAP In O-RAN Town (Timestamp 25:51)

  • Two scenarios:
    • Deploy gitlab runner into one k8s cluster
      • Just for learning and getting a feeling
      • The runner settings in Gitlab 
      • install the runner in a different cluster like tesla-dev
        • start with version 0.33.1 update it later to 0.34.0

        • add it to all kustomization.yaml's

          gitlab-runner-k8s.yaml

          ---
          apiVersion: argoproj.io/v1alpha1
          kind: Application
          metadata:
            name: gitlab-runner
            namespace: argocd
            annotations:
              argocd.argoproj.io/sync-wave: "0"
          spec:
            project: argo-management
            syncPolicy:
              automated:
                prune: false
                selfHeal: true
            destination:
              namespace: tnap
              server: https://kubernetes.default.svc
            source:
              repoURL: https://charts.gitlab.io
              chart: gitlab-runner
              targetRevision: 0.33.1
              helm:
                values: |
                  imagePullSecrets:
                    - name: tnap-docker-registry-key
                  imagePullPolicy: Always
                  gitlabUrl: "https://gitlab.devops.telekom.de/"
                  runnerRegistrationToken: "dnCTzaRs6EK-by1AqQxu"
                  runners:
                    tags: "tnaplab_k8s_test_oom_test_demostration"
                    name: "tnaplab_k8s_test_oom_test_demostration"
          
          

        • kustomization.yaml

          ---
          kind: Kustomization
          apiVersion: kustomize.config.k8s.io/v1beta1
          resources:
            - gitlab-runner-k8s.yaml
          
          

        • kustomization.yaml

          ---
          kind: Kustomization
          apiVersion: kustomize.config.k8s.io/v1beta1
          resources:
            - ...
            - ...
            - gitlab-runner-k8s/

        • now update it to version 0.34.0
    • Update an existing ONAP component
      • oom from onap
        • https://gerrit.onap.org/r/admin/repos/oom
        • https://gerrit.onap.org/r/gitweb?p=oom.git;a=tree;h=refs/heads/istanbul;hb=refs/heads/istanbul
      • In our case, we split the oom repo into several repos. One helm chart repo for each onap component.
        
      • and yesterday we had the increase the internal version number of dmaap (from 8.0.1 to 8.0.1-1) 

      • 

        @@ -16,4 +16,4 @@
        apiVersion: v1
        description: ONAP DMaaP components
        name: dmaap
        - version: 8.0.1
        + version: 8.0.1-1

      • and we put it into our artifactory (JFrog), similar to nexus

      • 

      • Now we need to update it in our argo-management repo to the version 8.0.1-1 as well

      • and watch it in Argo CD, how it is being updated
      • 
  • Outlook were we like to get better:
    • https://static.sched.com/hosted_files/kccncna20/39/GitOpsIsMoreThanYouThink.pdf
    • Remark:
      • Show slide 21 to 24 (pull request automatisation) → hint https://github.com/argoproj-labs/argocd-image-updater
      • Show slide 26 (Environment Customizations) - use a base config with kustomize
    • Notifications: https://argocd-notifications.readthedocs.io/en/stable/services/slack/
  • Summary of Argo:

    • Manage More Clusters with Less Hassle, with Argo CD Application Sets - Jonathan West & Kshama Jain (4:05)

    • Good to know: The Argo Architecture https://argo-cd.readthedocs.io/en/stable/operator-manual/architecture/
  • More from Argo / other projects:
    • All from: The Argo Ecosystem: Tailoring Your Installation Through Comm... Jesse Suen & Alexander Matyushentsev
      
      • Argo at a glance (1:15)
      • Argo Design philosophy (4:09)
      • Argo makes heavy use of Annotations (4:27)
      • Argo benefits of individuals projects (5:09)
  • Offtopic/Backup:

    • argo-management repo has linters in place

      ➜  argo-management git:(main) pre-commit run --all-files
      Check Yaml...............................................................Passed
      Fix End of Files.........................................................Passed
      Trim Trailing Whitespace.................................................Passed
      yamllint.................................................................Passed
      k8svalidate..............................................................Passed

If you like to watch 2 talks - watch these:

• • The Argo Ecosystem: Tailoring Your Installation Through Comm... Jesse Suen & Alexander Matyushentsev

  • and of course the one mention above from (Both talks are 99% similar, but the first one is more on point): 
    
    • KubeCon: GitOps Is Likely More Than You Think It Is - Cornelia Davis, Weaveworks
    • or GitOps Is Likely More Than You Think It Is