Chapter 10. Readiness init containers
Chapter 10. Readiness init containers CodeReady Workspaces Operator installs CodeReady Workspaces and starts its containers in the correct order. If a node with CodeReady Workspaces is restarted and all CodeReady Workspaces containers start simultaneously, some containers may fail because some other component they depend on is not ready. To avoid such failures, the readiness init containers queue the containers for CodeReady Workspaces components to start in the correct order. The readiness init containers are disabled by default. If you choose to enable them, proceed according to the installation method used to install CodeReady Workspaces: Section 10.1, "Enabling and disabling the readiness init containers for the Operator installer" Section 10.4, "Enabling and disabling the readiness init containers for the OLM installer" 10.1. Enabling and disabling the readiness init containers for the Operator installer You can enable and disable the readiness init containers for the CodeReady Workspaces installed by the Operator installer: Enabling the readiness init containers for the Operator installer Disabling the readiness init containers for the Operator installer 10.2. Enabling the readiness init containers for the Operator installer The readiness init containers are not enabled by default, so to use them you first have to enable them. To enable the readiness init containers for the CodeReady Workspaces installed by the Operator installer: Prerequisites Red Hat CodeReady Workspaces installed by the Operator installer. Procedure Find the name of the CodeReady Workspaces Operator Deployment. Usually it is codeready-workspaces-operator : USD oc get deployments -n openshift-workspaces Edit the Deployment as follows: Under spec.template.spec.containers[0].env of the Operator Deployment, insert the following lines: - name: ADD_COMPONENT_READINESS_INIT_CONTAINERS 1 value: "true" 1 ADD_COMPONENT_READINESS_INIT_CONTAINERS is an environment variable. Wait while CodeReady Workspaces Operator restarts some components. Note Repeat these steps after each CodeReady Workspaces upgrade when a new Operator Deployment is created. 10.3. Disabling the readiness init containers for the Operator installer To disable the previously enabled readiness init containers for the CodeReady Workspaces installed by the Operator installer: Prerequisites Red Hat CodeReady Workspaces installed by the Operator installer. Procedure Find the name of the CodeReady Workspaces Operator Deployment. Usually it is codeready-workspaces-operator : USD oc get deployments -n openshift-workspaces Edit the Deployment as follows: Under spec.template.spec.containers[0].env of the Operator Deployment, remove the following lines: - name: ADD_COMPONENT_READINESS_INIT_CONTAINERS 1 value: "true" 1 ADD_COMPONENT_READINESS_INIT_CONTAINERS is an environment variable. Wait while CodeReady Workspaces Operator restarts some components. 10.4. Enabling and disabling the readiness init containers for the OLM installer You can enable and disable the readiness init containers for the CodeReady Workspaces installed by the OLM installer. (Available through crwctl , the OLM installer uses the Operator Lifecycle Manager to install CodeReady Workspaces.) Enabling the readiness init containers for the OLM installer Disabling the readiness init containers for the OLM installer 10.5. Enabling the readiness init containers for the OLM installer The readiness init containers are not enabled by default, so to use them you first have to enable them. To enable the readiness init containers for the CodeReady Workspaces installed by the OLM installer: Prerequisites CodeReady Workspaces is installed by the OLM installer. Procedure Find the CodeReady Workspaces Operator subscription name: USD oc get subscriptions -n openshift-workspaces Get the CSV (Cluster Service Version) name from the CodeReady Workspaces Operator subscription: USD oc get subscription <subscription-name> -n openshift-workspaces -o yaml | grep installedCSV Edit the ClusterServiceVersion YAML manifest: USD oc edit csv <csv-name> -n openshift-workspaces Add the following environment variable to the Operator Deployment spec: - name: ADD_COMPONENT_READINESS_INIT_CONTAINERS value: "true" Wait for the CodeReady Workspaces Operator restart to finish. The restarted Operator will then continue with restarting some of its components. Note Repeat these steps after each CodeReady Workspaces upgrade when a new CSV is created by OLM. 10.6. Disabling the readiness init containers for the OLM installer To disable the previously enabled readiness init containers for the CodeReady Workspaces installed by the OLM installer: Prerequisites CodeReady Workspaces is installed by the OLM installer. Procedure Find the CodeReady Workspaces Operator subscription name: USD oc get subscriptions -n openshift-workspaces Get the CSV (Cluster Service Version) name from the CodeReady Workspaces Operator subscription: USD oc get subscription <subscription-name> -n openshift-workspaces -o yaml | grep installedCSV Edit the ClusterServiceVersion YAML manifest: USD oc edit csv <csv-name> -n openshift-workspaces Remove the following environment variable from the Operator Deployment spec: - name: ADD_COMPONENT_READINESS_INIT_CONTAINERS value: "true" Wait for the CodeReady Workspaces Operator restart to finish. The restarted Operator will then continue with restarting some of its components.
oc get deployments -n openshift-workspaces - name: ADD_COMPONENT_READINESS_INIT_CONTAINERS 1 value: "true" oc get deployments -n openshift-workspaces - name: ADD_COMPONENT_READINESS_INIT_CONTAINERS 1 value: "true" oc get subscriptions -n openshift-workspaces oc get subscription <subscription-name> -n openshift-workspaces -o yaml | grep installedCSV oc edit csv <csv-name> -n openshift-workspaces - name: ADD_COMPONENT_READINESS_INIT_CONTAINERS value: "true" oc get subscriptions -n openshift-workspaces oc get subscription <subscription-name> -n openshift-workspaces -o yaml | grep installedCSV oc edit csv <csv-name> -n openshift-workspaces - name: ADD_COMPONENT_READINESS_INIT_CONTAINERS value: "true"