Ensure errorPolicy is not set to ignore

MediumLevel 1Manual reviewopenshift-virt

Description

Error policies for disks control how Input/Output (IO) errors are handled. If a read or write operation fails on the storage, an IO error occurs. Setting the error policy to ignore is not recommended because it makes it difficult to determine the root cause of any IO issues, which can lead to data loss if the data is not correctly written to the disk. The benchmark marks this recommendation Manual; TMAegis reports it as a manual review item with the audit steps.

How it is checked

Audit method: Manual review

This recommendation cannot be checked automatically. A scan lists it with these instructions when you pass --include-manual.

Verify that no virtual machines are using the set to : errorPolicy ignore $ oc get vm - ojson - A | jq '.items[] | select(.spec.template.spec.domain.devices.disks[].errorPolicy == "ignore")| .metadata.namespace + "/" + .metadata.name'

How it is fixed

Fix method: Guidance or infrastructure patch

Remove the or set it to (default value) or (suggested option errorPolicy stop report for Windows Shared Cluster Filesystem). For example, to remove the errorPolicy flag on the first disk (index 0) of a given VM, this command can be used: $ oc patch vm <vm-name> --type='json' -p='[ {"op": "remove", "path": "/spec/template/spec/domain/devices/disks/0/errorPolicy"}, ]' To set an errorPolicy flag to stop on every disk, this (experimental) command can be used: $ oc get vm <vm - name> - o json | jq '.spec.template.spec.domain.devices.disks[] += {"errorPolicy":"stop"}' | oc apply -f -

Properties

Operating systems: Any
Tags: openshift-virtmanual-review
Reference: CIS Red Hat OpenShift Virtual Machine Extension Benchmark v1.0.0 - 3.3 Ensure errorPolicy is not set to ignore