Operating Argo CD
We will start this chapter by installing Argo CD with Kustomize using high availability (HA) manifests and go through some configuration options that we will perform while following the GitOps approach. We will make changes in the ConfigMap of a live Argo CD installation to see how we can modify different settings of Argo CD in a GitOps manner.
Then, we will look at the different Argo CD components, see what changes were introduced by the HA manifests, and what else we can do to make our installation a highly available one. While a Kubernetes cluster has a multi-control plane and worker nodes, it can still fail. Due to this, we will learn how to prepare for disaster recovery and move our installation from one cluster to another, including all the state.
Finally, we will discover what metrics are being exposed and how we can make the setup notify end users or send a custom hook to a CI/CD system when an application synchronizes successfully or not.
In this...