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Install with Argo CD

Use Argo Continuous Delivery (Argo CD) to automate the deployment and management of Gloo Mesh Enterprise and Istio in your cluster.

Argo CD is a declarative, Kubernetes-native continuous deployment tool that can read and pull code from Git repositories and deploy it to your cluster. Because of that, you can integrate Argo CD into your GitOps pipeline to automate the deployment and synchronization of your apps.

In this guide, you learn how to use Argo CD applications to deploy the following components:

Gloo Platform CRDs
Gloo Mesh Enterprise
Istio control plane istiod
Istio gateways

info

This guide assumes a single cluster setup for Gloo Mesh Enterprise and Istio. If you want to use Argo CD in a multicluster setup, you must configure your applications to deploy resources in either the management or workload clusters.

Before you begin

Create or use an existing Kubernetes or OpenShift cluster, and save the cluster name in an environment variable. Note: The cluster name must be alphanumeric with no special characters except a hyphen (-), lowercase, and begin with a letter (not a number).
```
  export CLUSTER_NAME=<cluster_name>
  
```
Save your Gloo Mesh Enterprise license in an environment variable. If you do not have a license key, contact an account representative.
```
  export GLOO_MESH_LICENSE_KEY=<license-key>
  
```
Save the Gloo Mesh Enterprise version that you want to install in an environment variable. The latest version is used as an example. You can find other versions in the Changelog documentation. Append ‘-fips’ for a FIPS-compliant image, such as ‘2.7.0-fips’. Do not include v before the version number.
```
  export GLOO_MESH_VERSION=2.7.0
  
```
Set environment variables for the Solo distribution of Istio that you want to install.
- REPO: The repo key for the Solo distribution of Istio that you can get by logging in to the Support Center and reviewing the Istio images built by Solo.io support article.
- ISTIO_VERSION: The version of Istio that you want to install, such as 1.24.2.
- ISTIO_IMAGE: The Solo distrubution of Istio patch version and -solo tag. You can optionally append other Solo tags as needed.
```
  export REPO=<repo-key>
export ISTIO_VERSION=1.24.2
export ISTIO_IMAGE=${ISTIO_VERSION}-solo
  
```

warning

Istio 1.22 is supported only as patch version 1.22.1-patch0 and later. Do not use patch versions 1.22.0 and 1.22.1, which contain bugs that impact several Gloo Mesh Enterprise routing features that rely on virtual destinations. Additionally, in Istio 1.22.0-1.22.3, the ISTIO_DELTA_XDS environment variable must be set to false. For more information, see this upstream Istio issue. Note that this issue is resolved in Istio 1.22.4.

Istio 1.20 is supported only as patch version 1.20.1-patch1 and later. Do not use patch versions 1.20.0 and 1.20.1, which contain bugs that impact several Gloo Mesh Enterprise features that rely on Istio ServiceEntries.

If you have multiple external services that use the same host and plan to use Istio 1.20, 1.21, or 1.22, you must use patch versions 1.20.7, 1.21.3, or 1.22.1-patch0 or later to ensure that the Istio service entry that is created for those external services is correct.

Install Argo CD

Create the Argo CD namespace in your cluster.
```
  kubectl create namespace argocd
  
```

Deploy Argo CD by using the non-HA YAML manifests.

  until kubectl apply -k https://github.com/solo-io/gitops-library.git/argocd/deploy/default/ > /dev/null 2>&1; do sleep 2; done

Verify that the Argo CD pods are up and running.

  kubectl get pods -n argocd

Example output:

  NAME                                                READY   STATUS    RESTARTS   AGE
argocd-application-controller-0                     1/1     Running   0          46s
argocd-applicationset-controller-6d8f595ffd-jhplp   1/1     Running   0          48s
argocd-dex-server-64d4c94598-bcdzb                  1/1     Running   0          48s
argocd-notifications-controller-f6998b6c-pbwfc      1/1     Running   0          47s
argocd-redis-b5d6bf5f5-4mj2x                        1/1     Running   0          47s
argocd-repo-server-5bc5469bbc-qhh4s                 1/1     Running   0          47s
argocd-server-d985cbf9b-s66lv                       2/2     Running   0          46s

Update the default Argo CD password for the admin user to solo.io.

  # bcrypt(password)=$2a$10$79yaoOg9dL5MO8pn8hGqtO4xQDejSEVNWAGQR268JHLdrCw6UCYmy
# password: solo.io
kubectl -n argocd patch secret argocd-secret \
  -p '{"stringData": {
    "admin.password": "$2a$10$79yaoOg9dL5MO8pn8hGqtO4xQDejSEVNWAGQR268JHLdrCw6UCYmy",
    "admin.passwordMtime": "'$(date +%FT%T%Z)'"
  }}'

Port-forward the Argo CD server on port 9999.

  kubectl port-forward svc/argocd-server -n argocd 9999:443

Open the Argo CD UI
Log in as the admin user with the password solo.io.

Install Gloo Mesh Enterprise

Use Argo CD applications to deploy the Gloo Platform CRD and Gloo Mesh Enterprise Helm charts in your cluster.

Create an Argo CD application to install the Gloo Platform CRD Helm chart.

  kubectl apply -f- <<EOF
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: gloo-platform-crds
  namespace: argocd
spec:
  destination:
    namespace: gloo-mesh
    server: https://kubernetes.default.svc
  project: default
  source:
    chart: gloo-platform-crds
    repoURL: https://storage.googleapis.com/gloo-platform/helm-charts
    targetRevision: ${GLOO_MESH_VERSION}
  syncPolicy:
    automated:
      prune: true
      selfHeal: true
    syncOptions:
    - CreateNamespace=true 
    retry:
      limit: 2
      backoff:
        duration: 5s
        maxDuration: 3m0s
        factor: 2
EOF

Create another application to install the Gloo Mesh Enterprise Helm chart. The following application prepopulates a set of Helm values to install Gloo Mesh Enterprise components, and enable the Gloo telemetry pipeline and the built-in Prometheus server. To customize these settings, see the Helm reference.

  kubectl apply -f- <<EOF
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: gloo-platform-helm
  namespace: argocd
  finalizers:
  - resources-finalizer.argocd.argoproj.io
spec:
  destination:
    server: https://kubernetes.default.svc
    namespace: gloo-mesh
  project: default
  source:
    chart: gloo-platform
    helm:
      skipCrds: true
      values: |
        licensing:
          licenseKey: ${GLOO_MESH_LICENSE_KEY}
        common:
          cluster: ${CLUSTER_NAME}
        glooMgmtServer: 
          enabled: true
          serviceType: ClusterIP
          registerCluster: true
          createGlobalWorkspace: true
          ports:
            healthcheck: 8091 
        prometheus:
          enabled: true
        redis:
          deployment:
            enabled: true
        telemetryGateway:
          enabled: true
          service:
            type: LoadBalancer
        telemetryCollector:
          enabled: true
          config:
            exporters:
              otlp:
                endpoint: gloo-telemetry-gateway.gloo-mesh:4317
        glooUi:
          enabled: true
          serviceType: ClusterIP
        glooAgent:
          enabled: true
          relay:
            serverAddress: gloo-mesh-mgmt-server:9900 
        glooInsightsEngine: 
          enabled: true
    repoURL: https://storage.googleapis.com/gloo-platform/helm-charts
    targetRevision: ${GLOO_MESH_VERSION}
  syncPolicy:
    automated:
      prune: true
      selfHeal: true
    syncOptions:
      - CreateNamespace=true
EOF

Verify that the Gloo Mesh Enterprise components are installed and in a healthy state.

  kubectl get pods -n gloo-mesh

Example output:

  NAME                                      READY   STATUS    RESTARTS   AGE
gloo-mesh-agent-6497df4cf9-htqw4          1/1     Running   0          27s
gloo-mesh-mgmt-server-6d5546757f-6fzxd    1/1     Running   0          27s
gloo-mesh-redis-7c797d595d-lf9dr          1/1     Running   0          27s
gloo-mesh-ui-7567bcd54f-6tvjt             2/3     Running   0          27s
gloo-telemetry-collector-agent-8jvh2      1/1     Running   0          27s
gloo-telemetry-collector-agent-x2brj      1/1     Running   0          27s
gloo-telemetry-gateway-689cb78547-sqqgg   1/1     Running   0          27s
prometheus-server-946c89d8f-zx5sf         1/2     Running   0          27s

Install Istio

With Gloo Mesh Enterprise installed in your environment, you can now install Istio by using the Istio Helm chart directly.

Create an Argo CD application to deploy the Istio base Helm chart to your cluster. This chart installs the CRDs that are necessary to deploy Istio.

  kubectl apply -f- <<EOF
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: istio-base
  namespace: argocd
  finalizers:
  - resources-finalizer.argocd.argoproj.io
  annotations:
    argocd.argoproj.io/sync-wave: "-3"
spec:
  destination:
    server: https://kubernetes.default.svc
    namespace: istio-system
  project: default
  source:
    chart: base
    repoURL: https://istio-release.storage.googleapis.com/charts
    targetRevision: main
  syncPolicy:
    automated:
      prune: true
      selfHeal: true
    syncOptions:
    - CreateNamespace=true
EOF

Create another application to deploy the Istio control plane istiod.

  kubectl apply -f- <<EOF
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: istiod
  namespace: argocd
  finalizers:
  - resources-finalizer.argocd.argoproj.io
spec:
  destination:
    server: https://kubernetes.default.svc
    namespace: istio-system
  project: default
  source:
    chart: istiod
    repoURL: https://istio-release.storage.googleapis.com/charts
    targetRevision: main
    helm:
      values: |
        revision: main
        global:
          meshID: mesh1
          multiCluster:
            clusterName: ${CLUSTER_NAME}
          network: network1
          hub: ${REPO}
          tag: ${ISTIO_IMAGE}
        meshConfig:
          trustDomain: ${CLUSTER_NAME}
          accessLogFile: /dev/stdout
          accessLogEncoding: JSON
          enableAutoMtls: true
          defaultConfig:
            # Wait for the istio-proxy to start before starting application pods
            holdApplicationUntilProxyStarts: true
            envoyAccessLogService:
              address: gloo-mesh-agent.gloo-mesh:9977
            proxyMetadata:
              ISTIO_META_DNS_CAPTURE: "true"
              ISTIO_META_DNS_AUTO_ALLOCATE: "true"
          outboundTrafficPolicy:
            mode: ALLOW_ANY
          rootNamespace: istio-system
        pilot:
          env:
            PILOT_ENABLE_K8S_SELECT_WORKLOAD_ENTRIES: "false"
            PILOT_SKIP_VALIDATE_TRUST_DOMAIN: "true"
  syncPolicy:
    automated:
      prune: true
      selfHeal: true
    #automated: {}
  ignoreDifferences:
  - group: '*'
    kind: '*'
    managedFieldsManagers:
    - argocd-application-controller
EOF

Optional: Create another application to deploy an Istio east-west gateway.

  kubectl apply -f- <<EOF
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: istio-eastwestgateway
  namespace: argocd
  finalizers:
  - resources-finalizer.argocd.argoproj.io
  annotations:
    argocd.argoproj.io/sync-wave: "-1"
spec:
  destination:
    server: https://kubernetes.default.svc
    namespace: istio-eastwest
  project: default
  source:
    chart: gateway
    repoURL: https://istio-release.storage.googleapis.com/charts
    targetRevision: main
    helm:
      values: |
        # Name allows overriding the release name. Generally this should not be set
        name: "istio-eastwestgateway"
        # revision declares which revision this gateway is a part of
        revision: "main"
        replicaCount: 1
        service:
          # Type of service. Set to "None" to disable the service entirely
          type: LoadBalancer
          ports:
            # Port for health checks on path /healthz/ready.
            # For AWS ELBs, this port must be listed first.
            - port: 15021
              targetPort: 15021
              name: status-port
            # Port for multicluster mTLS passthrough; required for Gloo Mesh east/west routing
            - port: 15443
              targetPort: 15443
              # Gloo Mesh looks for this default name 'tls' on a gateway
              name: tls
            # Port required for VM onboarding
            #- port: 15012
              #targetPort: 15012
              # Required for VM onboarding discovery address
              #name: tls-istiod
          annotations:
            # AWS NLB Annotation
            service.beta.kubernetes.io/aws-load-balancer-type: "nlb"
          loadBalancerIP: ""
          loadBalancerSourceRanges: []
          externalTrafficPolicy: ""
        # Pod environment variables
        env: {}
        annotations:
          proxy.istio.io/config: '{ "holdApplicationUntilProxyStarts": true }'
        # Labels to apply to all resources
        labels:
          # Set a unique label for the gateway so that virtual gateways
          # can select this workload.
          app: istio-eastwestgateway
          istio: eastwestgateway
          revision: main
          # Matches spec.values.global.network in the istiod deployment
          topology.istio.io/network: ${CLUSTER_NAME}
  syncPolicy:
    automated:
      prune: true
      selfHeal: true
    syncOptions:
    - CreateNamespace=true
EOF

Optional: Create another application to deploy the Istio ingress gateway.

  kubectl apply -f- <<EOF
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: istio-ingressgateway
  namespace: argocd
  finalizers:
  - resources-finalizer.argocd.argoproj.io
  annotations:
    argocd.argoproj.io/sync-wave: "-1"
spec:
  destination:
    server: https://kubernetes.default.svc
    namespace: istio-ingress
  project: default
  source:
    chart: gateway
    repoURL: https://istio-release.storage.googleapis.com/charts
    targetRevision: ${ISTIO_VERSION}
    helm:
      values: |
        # Name allows overriding the release name. Generally this should not be set
        name: "istio-ingressgateway"
        # revision declares which revision this gateway is a part of
        revision: "main"
        replicaCount: 1
        service:
          # Type of service. Set to "None" to disable the service entirely
          type: LoadBalancer
          ports:
          - name: http2
            port: 80
            protocol: TCP
            targetPort: 80
          - name: https
            port: 443
            protocol: TCP
            targetPort: 443
          annotations:
            # AWS NLB Annotation
            service.beta.kubernetes.io/aws-load-balancer-type: "nlb"
          loadBalancerIP: ""
          loadBalancerSourceRanges: []
          externalTrafficPolicy: ""
        # Pod environment variables
        env: {}
        annotations:
          proxy.istio.io/config: '{ "holdApplicationUntilProxyStarts": true }'
        # Labels to apply to all resources
        labels:
          istio.io/rev: main
          istio: ingressgateway
  syncPolicy:
    automated:
      prune: true
      selfHeal: true
    syncOptions:
    - CreateNamespace=true
EOF

Verify that the Istio pods are up and running.

  kubectl get pods -n istio-system
kubectl get pods -n istio-ingress
kubectl get pods -n istio-eastwest

Example output:

  NAME                           READY   STATUS    RESTARTS   AGE
istiod-main-64ff8d9c9c-sl62w   1/1     Running   0          72s
NAME                                         READY   STATUS    RESTARTS   AGE
istio-ingressgateway-main-674cbfc747-bjm64   1/1     Running   0          65s
NAME                                          READY   STATUS    RESTARTS   AGE
istio-eastwestgateway-main-7895666dc8-hm6gp   1/1     Running   0          29s

Congratulations! You successfully used Argo CD to deploy Gloo Mesh Enterprise and Istio in your cluster.

Test the resilience of your setup

Managing deployments with Argo CD allows you to declare the desired state of your components in a versioned-controlled source of truth, such as Git, and to automatically sync changes to your environments whenever the source of truth is changed. This approach significantly reduces the risk of configuration drift between your environments, but also helps to detect discrepancies between the desired state in Git and the actual state in your cluster to kick off self-healing mechanisms.

Review the deployments that were created when you installed Gloo Mesh Enterprise with Argo CD.

  kubectl get deployments -n gloo-mesh

Example output:

  NAME                     READY   UP-TO-DATE   AVAILABLE   AGE
gloo-mesh-agent          1/1     1            1           3h11m
gloo-mesh-mgmt-server    1/1     1            1           3h11m
gloo-mesh-redis          1/1     1            1           3h11m
gloo-mesh-ui             1/1     1            1           3h11m
gloo-telemetry-gateway   1/1     1            1           3h11m
prometheus-server        1/1     1            1           3h11m

Simulate a chaos scenario where all of your deployments in the gloo-mesh namespace are deleted. Without Argo CD, deleting a deployment permanently deletes all of the pods that the deployment manages. However, when your deployments are monitored and managed by Argo CD, and you enabled the selfHeal: true and prune: true options in your Argo CD application, Argo automatically detects that the actual state of your deployment does not match the desired state in Git, and kicks off its self-healing mechanism.
```
  kubectl delete deployments --all -n gloo-mesh  
  
```
info
If you use self-signed TLS certificates for the relay connection between the Gloo management server and agent, you must remove the secrets in the gloo-mesh namespace as the certificates are automaticatically rotated during a redeploy or upgrade of the management server and agent. To delete the secrets, run kubectl delete secrets --all -n gloo-mesh.

Verify that Argo CD automatically recreated all of the deployments in the gloo-mesh namespace.

  kubectl get deployments -n gloo-mesh

Example output:

  NAME                     READY   UP-TO-DATE   AVAILABLE   AGE
gloo-mesh-agent          1/1     1            1           5m
gloo-mesh-mgmt-server    1/1     1            1           5m
gloo-mesh-redis          1/1     1            1           5m
gloo-mesh-ui             1/1     1            1           5m
gloo-telemetry-gateway   1/1     1            1           5m
prometheus-server        1/1     1            1           5m

Next steps

Now that you have Gloo Mesh Enterprise and Istio up and running, check out some of the following resources to learn more about Gloo Mesh and expand your service mesh capabilities.

Gloo Mesh Enterprise:

Enable insights to review and improve your setup’s health and security posture.

Apply Gloo policies to manage the security and resiliency of your service mesh environment.
Organize team resources with workspaces.
When it’s time to upgrade Gloo Mesh Enterprise, see the upgrade guide.

Istio: Now that you have Gloo Mesh Enterprise and Istio installed, you can use Gloo to manage your Istio service mesh resources. You don’t need to directly configure any Istio resources going forward.

Find out more about hardened Istio n-4 version support built into Solo distributions of Istio.
Review how Gloo Mesh Enterprise custom resources are automatically translated into Istio resources.
Monitor and observe your Istio environment with Gloo Mesh Enterprise’s built-in telemetry tools.
When it’s time to upgrade Istio, check out
Upgrade Istio service meshes with Helm.

Help and support:

Talk to an expert to get advice or build out a proof of concept.
Join the #gloo-mesh channel in the Solo.io community slack.
Try out one of the Gloo workshops.

Cleanup

You can optionally remove the resources that you created as part of this guide.

  kubectl delete applications istiod istio-base istio-ingressgateway istio-eastwestgateway -n argocd
kubectl delete applications gloo-platform-helm gloo-platform-crds -n argocd
kubectl delete applications istio-lifecyclemanager-deployments -n argocd
kubectl delete -k https://github.com/solo-io/gitops-library.git/argocd/deploy/default/
kubectl delete namespace argocd gloo-mesh

Install with Argo CD

Before you begin link

Install Argo CD link

Install Gloo Mesh Enterprise link

Install Istio link

Test the resilience of your setup link

Next steps link

Cleanup link

Before you begin

Install Argo CD

Install Gloo Mesh Enterprise

Install Istio

Test the resilience of your setup

Next steps

Cleanup