cri-dockerd Setup

Set up cri-dockerd on this node. Step 1: Install the Debian package located at ~/cri-dockerd.deb using dpkg. Step 2: Enable and start the cri-docker service.

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The task

Task

Set up cri-dockerd on this node.

Step 1: Install the Debian package located at ~/cri-dockerd.deb using dpkg.

Step 2: Enable and start the cri-docker service.

Step 3: Create a sysctl configuration file and apply it with the following parameters:

net.bridge.bridge-nf-call-iptables = 1
net.ipv6.conf.all.forwarding = 1
net.ipv4.ip_forward = 1
net.netfilter.nf_conntrack_max = 131072

Exam

CKA

Domain

Troubleshooting

Grading

Programmatic · partial credit

Reference

Kubernetes docs ↗

What this tests

Diagnose failing nodes, control-plane components, the kubelet, and broken cluster networking. On the CKA exam, Troubleshooting tasks are graded purely on what you build in the cluster - not multiple choice - so the only way to get faster is to do them on a real cluster against a clock.

Practice it for real

The public description lets you study the task before signing up. Full access includes this live lab; the selected Task of the Week is free with an account. You solve the task in a real terminal, hit validate, and a programmatic checker scores exactly what you got right and wrong (with partial credit). You can open the solution while practising, then retry and use the failed checks to improve your score.

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