Istio Installation Upgrade And Configuration

If you want to use a custom proxy image for your sidecars, where should this be specified in the IstioOperator configuration?

Which profile is recommended for a production environment where high availability and performance are required?

When using IstioOperator to customize the installation, you want to change the number of replicas for the Istiod control plane. Where should this be defined?

What is the purpose of the 'istio-sidecar-injector' service in the Istio control plane?

Which TWO fields in the IstioOperator CR are commonly used to configure ingress gateway resources?

You are performing a canary upgrade of Istio from version 1.19 to 1.20 using the `istioctl` tool. You have deployed a canary revision of Istiod and now need to migrate a subset of workloads to the new revision without disrupting existing traffic. Which command should you use to relabel the `default` namespace for canary migration, and what is the effect?

You are preparing to install Istio using the `istioctl install` command with a custom IstioOperator file. You need to ensure that the installation uses a private container registry and that the sidecar injector uses a specific image pull secret. Which two configuration fields in the IstioOperator resource should you set? (Choose two.)

Which 'istioctl' command is used to verify that the current Istio configuration in a cluster is valid and follows best practices?

Which TWO Istio components can be configured via the 'spec.components' section in IstioOperator?

When planning an Istio upgrade, which THREE steps are critical for a canary upgrade strategy?

You have a cluster with multiple revisions of Istio installed. You want to move a namespace from revision '1-18' to '1-19'. What is the correct procedure?

When configuring an IstioOperator file, what does the 'spec.meshConfig' section primarily control?

Which TWO of the following are valid ways to verify the status of an Istio control plane deployment?

A team wants to enable sidecar injection for a specific namespace without modifying the deployment manifests. What is the most efficient way to achieve this?

Your organization runs multiple Istio revisions side-by-side to support a canary upgrade. You have installed revision "1-20-0" and revision "1-21-0". A new namespace, "payments", must have its pods injected with sidecars from revision "1-21-0" only, while other namespaces continue using the default revision. Which label should you apply to the "payments" namespace?

You are installing Istio for a development cluster and want to use a predefined configuration that includes the core components but disables unnecessary features like telemetry to save resources. Which profile should you choose?

You are preparing to upgrade Istio from version 1.18 to 1.19 in a production cluster using the canary upgrade method. You have deployed a new istiod revision named '1-19-0' and relabeled a test namespace with 'istio.io/rev=1-19-0'. After verifying that the test namespace's sidecars are injected with the new revision, you want to migrate the remaining application namespaces without causing downtime. Which step should you perform next?