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In Red Hat OpenShift 4, the Operator framework became a fundamental part of the daily cluster operations. An operator is a custom controller that listens to a few custom resources. Operators can be used for networking, cluster management, or installing and running applications. They provide a custom mechanism that extends the default OpenShift Container Platform capabilities. Specifically, in terms of application operators, Data Grid Operator (a Go application) deploys Red Hat Data Grid (a Java ...