By: Minal Chindhe

Minal Chindhe — Wed, 09 Aug 2023 13:43:23 +0000

Thank You ..Useful Article

By: David

David — Wed, 30 Jun 2021 17:59:45 +0000

Awesome! Works on a single Ubuntu 20.04 machine with 3 LXD virtual machines.

By: Laroche

Laroche — Fri, 19 Mar 2021 16:14:28 +0000

In reply to LAVenetz. [ERROR SystemVerification]: missing required cgroups: memory. The massage is clear. you have a raspberry-pi with 1GB of RAM, you need a minimum of 2GB

By: Aleksander

Aleksander — Fri, 19 Mar 2021 11:00:49 +0000

Thanks, it works.

By: jude

jude — Sun, 14 Mar 2021 22:52:51 +0000

You are awesome mate. it work

By: LAVenetz

LAVenetz — Sun, 07 Feb 2021 14:26:56 +0000

Many thanks, Pradeep. In my environment, there are two amd64 (k8s-master with 16 GB Ram, and k8s-node-0 with 8 GB Ram) and one raspberry pi 3b (k8s-node-1 with 1 GB Ram), all running the latest ubuntu 20.04.2 server 64bit. I succeeded to join k8s-node-0 and running the tasks of your tutorial until the end:
myname@k8s-master:~$ curl ‘http://10.100.205.206:80’
It works!
But the join command on k8s-node-1 (raspberry pi 3b) did not work:
ubuntu@k8s-node-1:~$ sudo kubeadm join 192.168.x.y:6443 –token jdxsul… –discovery-token-ca-cert-hash sha256:a2958ee…aeaf2bee4f68
[preflight] Running pre-flight checks
[WARNING IsDockerSystemdCheck]: detected “cgroupfs” as the Docker cgroup driver. The recommended driver is “systemd”. Please follow the guide at ‘https://kubernetes.io/docs/setup/cri/’
[preflight] The system verification failed. Printing the output from the verification:
KERNEL_VERSION: 5.4.0-1028-raspi
CONFIG_NAMESPACES: enabled
CONFIG_NET_NS: enabled
CONFIG_PID_NS: enabled
CONFIG_IPC_NS: enabled
CONFIG_UTS_NS: enabled
CONFIG_CGROUPS: enabled
CONFIG_CGROUP_CPUACCT: enabled
CONFIG_CGROUP_DEVICE: enabled
CONFIG_CGROUP_FREEZER: enabled
CONFIG_CGROUP_SCHED: enabled
CONFIG_CPUSETS: enabled
CONFIG_MEMCG: enabled
CONFIG_INET: enabled
CONFIG_EXT4_FS: enabled
CONFIG_PROC_FS: enabled
CONFIG_NETFILTER_XT_TARGET_REDIRECT: enabled (as module)
CONFIG_NETFILTER_XT_MATCH_COMMENT: enabled (as module)
CONFIG_OVERLAY_FS: enabled (as module)
CONFIG_AUFS_FS: enabled (as module)
CONFIG_BLK_DEV_DM: enabled
DOCKER_VERSION: 19.03.8
DOCKER_GRAPH_DRIVER: overlay2
OS: Linux
CGROUPS_CPU: enabled
CGROUPS_CPUACCT: enabled
CGROUPS_CPUSET: enabled
CGROUPS_DEVICES: enabled
CGROUPS_FREEZER: enabled
CGROUPS_MEMORY: missing
CGROUPS_PIDS: enabled
CGROUPS_HUGETLB: missing
[WARNING SystemVerification]: missing optional cgroups: hugetlb
error execution phase preflight: [preflight] Some fatal errors occurred:
[ERROR SystemVerification]: missing required cgroups: memory
[preflight] If you know what you are doing, you can make a check non-fatal with `–ignore-preflight-errors=…`
To see the stack trace of this error execute with –v=5 or higher
Is it possible to troubleshoot my problem, or should I choose another system?

By: sansay

sansay — Sat, 12 Dec 2020 23:00:28 +0000

Thanks! It works!

By: Venkat

Venkat — Sun, 08 Nov 2020 13:19:57 +0000

Thanks Pradeep. I had issues with my network and IP addresses but eventually I managed to resolve all the issues along with your other instructions.

By: Vignesh

Vignesh — Tue, 03 Nov 2020 10:45:43 +0000

Thank You, Good Guide

By: Nelson Muturi

Nelson Muturi — Sat, 31 Oct 2020 06:49:09 +0000

A simple and great guide. Many thanks!

Comments on: How to Install Kubernetes Cluster on Ubuntu 20.04