Service Mesh 1.1 released

Service Mesh OpenShift

- Thomas Jungbauer Thomas Jungbauer ( Lastmod: 2024-05-05 ) - 1 min read

April 10th 2020 Red Hat released Service Mesh version 1.1 which supports the following versions:

  • Istio - 1.4.6

  • Kiali - 1.12.7

  • Jaeger - 1.17.1

Update

To update an operator like Service Mesh, the Operator Life Cycle Manager takes care and automatically updates everything (unless it was configured differently).

For the Service Mesh 1.1 update consult Upgrading Red Hat OpenShift Service Mesh
It is important to add the version number to the ServiceMeshControlPlane object. The easiest way to do so is:

  • Log into OpenShift

  • Select the Namespace istio-system

  • Goto _"Installed Operators > Red Hat OpenShift Service Mesh > ServiceMeshControlPlanes > basic-install > YAML"

  • Under spec add the following:

    spec:
  version: v1.1

Notable Changes

ServiceMeshMember Object

With the ServiceMeshMember object it is now possible that a project administrator can add a service to the service mesh, instead relying on the cluster administrator to configure the ServiceMeshMemberRoll. To do so create the following object (i.e. under the namespace tutorial)

apiVersion: maistra.io/v1
kind: ServiceMeshMember
metadata:
  name: default
  namespace: tutorial
spec:
  controlPlaneRef:
    name: basic-install (1)
    namespace: istio-system (2)
1Name of the ServiceMeshControlPlane object
2name of the service mesh namespace

See Also:

  • Using ApplicationSet with Matrix Generator and define individual Namespaces –

    During my day-to-day business, I am discussing the following setup with many customers: Configure App-of-Apps. Here I try to explain how I use an ApplicationSet that watches over a folder in Git and automatically adds a new Argo CD Application whenever a new folder is found. This works great, but there is a catch: The ApplicationSet uses the same Namespace default for all Applications. This is not always desired, especially when you have different teams working on different Applications. Recently I was asked by the customer if this can be fixed and if it is possible to define different Namespaces for each Application. The answer is yes, and I would like to show you how to do this.

  • Introducing AdminNetworkPolicies –

    Classic Kubernetes/OpenShift offer a feature called NetworkPolicy that allows users to control the traffic to and from their assigned Namespace. NetworkPolicies are designed to give project owners or tenants the ability to protect their own namespace. Sometimes, however, I worked with customers where the cluster administrators or a dedicated (network) team need to enforce these policies. Since the NetworkPolicy API is namespace-scoped, it is not possible to enforce policies across namespaces. The only solution was to create custom (project) admin and edit roles, and remove the ability of creating, modifying or deleting NetworkPolicy objects. Technically, this is possible and easily done. But shifts the whole network security to cluster administrators. Luckily, this is where AdminNetworkPolicy (ANP) and BaselineAdminNetworkPolicy (BANP) comes into play.

  • Using Kustomize to post render a Helm Chart –

    Lately I came across several issues where a given Helm Chart must be modified after it has been rendered by Argo CD. Argo CD does a helm template to render a Chart. Sometimes, especially when you work with Subcharts or when a specific setting is not yet supported by the Chart, you need to modify it later …​ you need to post-render the Chart. In this very short article, I would like to demonstrate this on a real-live example I had to do. I would like to inject annotations to a Route objects, so that the certificate can be injected. This is done by the cert-utils operator. For the post-rendering the Argo CD repo pod will be extended with a sidecar container, that is watching for the repos and patches them if required.

  • Managing Certificates using GitOps approach –

    The article SSL Certificate Management for OpenShift on AWS explains how to use the Cert-Manager Operator to request and install a new SSL Certificate. This time, I would like to leverage the GitOps approach using the Helm Chart cert-manager I have prepared to deploy the Operator and order new Certificates. I will use an ACME Letsencrypt issuer with a DNS challenge. My domain is hosted at AWS Route 53. However, any other integration can be easily used.

  • Update Cluster Version using GitOps approach –

    During a GitOps journey at one point, the question arises, how to update a cluster? Nowadays it is very easy to update a cluster using CLI or WebUI, so why bother with GitOps in that case? The reason is simple: Using GitOps you can be sure that all clusters are updated to the correct, required version and the version of each cluster is also managed in Git. All you need is the channel you want to use and the desired cluster version. Optionally, you can define the exact image SHA. This might be required when you are operating in a restricted environment.

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