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Merge pull request #52822 from ShaunaDiaz/OSDOCS-4564
OSDOCS-4564: renaming troubleshooting book and adding known issue
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‎_topic_maps/_topic_map_ms.yml

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# File: TBD
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---
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Name: Troubleshooting
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Dir: microshift_support
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Dir: microshift_troubleshooting
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Distros: microshift
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Topics:
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- Name: MicroShift Troubleshooting

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‎microshift_support/microshift-troubleshooting.adoc renamed to ‎microshift_troubleshooting/microshift-troubleshooting.adoc

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:_content-type: ASSEMBLY
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[id="microshift-troubleshooting"]
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= MicroShift Troubleshooting
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= Check your version and known issues
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include::_attributes/attributes-microshift.adoc[]
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:context: microshift-troubleshooting
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toc::[]
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Determine which version of {product-title} you have, find out about known issues, and troubleshoot common problems.
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Determine which version of {product-title} you have, find out about known issues, and troubleshoot problems.
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include::modules/microshift-version-cli.adoc[leveloffset=+1]
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include::modules/microshift-version-api.adoc[leveloffset=+1]
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include::modules/microshift-version-api.adoc[leveloffset=+1]
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include::modules/microshift-ki-cni-iptables-deleted.adoc[leveloffset=+1]
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‎modules/microshift-k8s-apis.adoc

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// Module included in the following assemblies:
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//
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// * microshift_support/microshift-version.adoc
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// * microshift_troubleshooting/microshift-version.adoc
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:_content-type: CONCEPT
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[id="microshift-k8s-apis_{context}"]
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= MicroShift Kubernetes APIs
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= {product-title} Kubernetes APIs
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{product-title} supports the following standard Kubernetes APIs:
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{product-title} supports the following standard Kubernetes APIs:
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NOTE: TABLE IS FOR PLACEMENT ONLY (FPO)
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‎modules/microshift-ki-cni-iptables-deleted.adoc

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// Module included in the following assemblies:
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//
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// * microshift_support/microshift-version.adoc
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[id="microshift-ki-cni-iptables-deleted_{context}"]
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= Reloading the firewall deletes iptable rules
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OVN-Kubernetes handles incoming NodePort traffic by using iptable rules. When you reload firewall rules with the `firewall-cmd --reload` command, the iptable rules are deleted. This stops the NodePort service traffic and any other host traffic that uses iptable rules.
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[id="microshift-ki-cni-iptables-deleted-workaround_{context}"]
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== Restarting the daemon set pod as a workaround
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To troubleshoot this issue, delete the ovnkube-master pod to restart the ovnkube daemon set pod. Restarting the ovnkube daemon set pod will trigger a reconciliation of the iptable rules.
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.Prerequisites
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* The OpenShift CLI (`oc`) is installed.
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* Access to the cluster as a user with the `cluster-admin` role.
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* A cluster installed on infrastructure configured with the OVN-Kubernetes CNI cluster network provider.
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* The KUBECONFIG environment variable is set.
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.Procedure
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Run the commands listed in each step that follows to restore the iptable rules.
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. Stop the ovn-master application:
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[source, terminal]
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----
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$ pod=$(oc get pods -n openshift-ovn-kubernetes | grep ovnkube-master | awk -F " " '{print $1}')
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----
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. Delete the ovnkube-master pod:
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[source, terminal]
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----
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$ oc -n openshift-ovn-kubernetes delete pod $pod
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----
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This command causes the daemon set pod to be automatically restarted, causing a reconciliation of the iptable rules.
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. Confirm that the iptables have reconciled by running the following command:
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[source, terminal]
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----
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$ sudo iptables-save | grep NODEPORT
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:OVN-KUBE-NODEPORT - [0:0]
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-A PREROUTING -j OVN-KUBE-NODEPORT
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-A OUTPUT -j OVN-KUBE-NODEPORT
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-A OVN-KUBE-NODEPORT -p tcp -m addrtype --dst-type LOCAL -m tcp --dport 30768 -j DNAT --to-destination 10.43.17.173:443
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-A OVN-KUBE-NODEPORT -p tcp -m addrtype --dst-type LOCAL -m tcp --dport 32122 -j DNAT --to-destination 10.43.17.173:80
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----
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You can also confirm that a new ovnkube-master pod has been started by running the following command:
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[source, terminal]
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----
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$ oc get pods -n openshift-ovn-kubernetes
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----
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The listing of the running pods shows a new ovnkube-master pod name and age. For example:
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[cols="5",options="header"]
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|===
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|NAME
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|READY
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|STATUS
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|RESTARTS
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|AGE
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|ovnkube-master-kg7ms
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|4/4
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|Running
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|0
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|11s
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|ovnkube-node-84gxn
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|1/1
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|Running
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|0
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|4d22h
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|===

‎modules/microshift-version-api.adoc

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:_content-type: CONCEPT
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[id="microshift-version-api_{context}"]
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= Checking the {product-title} Version via the API
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= Checking the {product-title} version using the API
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.Procedure
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* To get the version number using the OpenShift CLI (`oc`), view the `kube-public/microshift-version` config map by running the following command:
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[source,terminal]
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$ oc get configmap -n kube-public microshift-version -o yaml

‎modules/microshift-version-cli.adoc

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// * microshift_support/microshift-version.adoc
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[id="microshift-version-cli_{context}"]
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= Checking the {product-title} Version from the command-line
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= Checking the {product-title} version using the command-line interface
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.Procedure
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* Run the following command to check the version information:
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[source,terminal]
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$ microshift version

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