K8s - Revision history

John3-16: 1. Added 'See also': K3s

2025-12-06T04:17:24Z

1. Added 'See also': K3s

← Older revision		Revision as of 04:17, 6 December 2025
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	A description of the cloud init version is avalable at [[K8s_with_cloud-init]]		A description of the cloud init version is avalable at [[K8s_with_cloud-init]]

			== See also ==
			* [[K3s]]

	[[Category:Virtualization]]		[[Category:Virtualization]]

Richard.Aik: /* 2. Node Setup 🖥️ */

2024-08-24T13:38:59Z

2. Node Setup 🖥️

← Older revision		Revision as of 13:38, 24 August 2024
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	{{Cmd\|# uuidgen > /etc/machine-id}}		{{Cmd\|# uuidgen > /etc/machine-id}}

			'''Update the containerd sandbox_image to the latest version (It's pause:3.9 in K8S v1.30)'''
			{{Cmd\|# sed -i 's/pause:3.8/pause:3.9/' /etc/containerd/config.toml}}

	'''Add kubernetes services on all controlplane and worker nodes'''		'''Add kubernetes services on all controlplane and worker nodes'''

Richard.Aik: /* 2. Node Setup 🖥️ */

2024-08-24T13:25:26Z

2. Node Setup 🖥️

← Older revision		Revision as of 13:25, 24 August 2024
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	The result here gives you a functional node that can be joined to an existing cluster or can become the first control plane of a new cluster. <span class="emoji" data-emoji="notes">🎶</span>		The result here gives you a functional node that can be joined to an existing cluster or can become the first control plane of a new cluster. <span class="emoji" data-emoji="notes">🎶</span>

	{{Note\|<span class{{=}}"emoji" data-emoji{{=}}"bell">🔔</span> This build assumes CNI usage of flannel for networking <span class{{=}}"emoji" data-emoji{{=}}"bell">🔔</span>}}		{{Note\|<span class{{=}}"emoji" data-emoji{{=}}"bell">🔔</span> This build assumes CNI usage of flannel for networking. Skip the flannel packages if you want to use calico <span class{{=}}"emoji" data-emoji{{=}}"bell">🔔</span>}}

	'''Add kernel module for networking stuff'''		'''Add kernel module for networking stuff'''
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	# sysctl net.ipv4.ip_forward{{=}}1		# sysctl net.ipv4.ip_forward{{=}}1
	# echo "net.ipv4.ip_forward{{=}}1" >> /etc/sysctl.conf		# echo "net.ipv4.ip_forward{{=}}1" >> /etc/sysctl.conf
	# apk add {{Pkg\|cni-plugin-flannel}}		}}

			'''Kernel stuff'''

			{{Cmd\|# echo "net.bridge.bridge-nf-call-iptables{{=}}1" >> /etc/sysctl.conf
			# sysctl net.bridge.bridge-nf-call-iptables{{=}}1}}


			'''Installing kubernetes packages'''
			{{Cmd\|# apk add {{Pkg\|cni-plugin-flannel}}
	# apk add {{Pkg\|cni-plugins}}		# apk add {{Pkg\|cni-plugins}}
	# apk add {{Pkg\|flannel}}		# apk add {{Pkg\|flannel}}
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	'''Get rid of swap'''		'''Get rid of swap'''

	{{Cmd\|# ~~cat~~ /etc/fstab ~~\| grep -v swap > temp~~.~~fstab~~		{{Cmd\|# cp -av /etc/fstab /etc/fstab.bak
	# ~~cat temp.fstab >~~ /etc/~~fstab~~		# sed -i '/swap/s/^/#/' /etc/fstab
	~~# rm temp.~~fstab
	# swapoff -a}}		# swapoff -a}}

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	{{Cmd\|# uuidgen > /etc/machine-id}}		{{Cmd\|# uuidgen > /etc/machine-id}}

	'''Add services'''		'''Add kubernetes services on all controlplane and worker nodes'''

	{{Cmd\|# rc-update add containerd		{{Cmd\|# rc-update add containerd
	# rc-update add kubelet}}		# rc-update add kubelet
			# rc-service containerd start}}

	'''~~Sync~~ time'''		'''Enable time sync (Not required in 3.20 if using default chrony)'''

	{{Cmd\|# rc-update add ntpd		{{Cmd\|# rc-update add ntpd
	# rc-service ntpd ~~start~~		# rc-service ntpd start}}
	~~# rc-service containerd~~ start}}

	'''~~Fix~~ flannel'''		'''Option 1 - Using flannel as your CNI'''

	''NOTE: This may no longer be necessary on newer versions of the flannel package''		''NOTE: This may no longer be necessary on newer versions of the flannel package''

	{{Cmd\|# ln -s /usr/libexec/cni/flannel-amd64 /usr/libexec/cni/flannel}}		{{Cmd\|# ln -s /usr/libexec/cni/flannel-amd64 /usr/libexec/cni/flannel}}

	'''~~Kernel stuff~~'''		'''Option 2 - Using calico as your CNI'''
			''NOTE: This is required in 3.20 if you use calico''
	{{Cmd\|# ~~echo "net.bridge.bridge~~-~~nf-call-iptables{{=}}1" >>~~ /~~etc~~/~~sysctl.conf~~		{{Cmd\|# ln -s /opt/cni/bin/calico /usr/libexec/cni/calico
	# ~~sysctl net.bridge.bridge~~-nf-~~call~~-~~iptables{{=}}1~~}}		# ln -s /opt/cni/bin/calico-ipam /usr/libexec/cni/calico-ipam}}

	'''Pin your versions!''' If you update and the nodes get out of sync, it implodes.		'''Pin your versions!''' If you update and the nodes get out of sync, it implodes.

	{{Cmd\|# apk add 'kubelet{{=}}~1.27'		{{Cmd\|# apk add 'kubelet{{=}}~1.30'
	# apk add 'kubeadm{{=}}~1.27'		# apk add 'kubeadm{{=}}~1.30'
	# apk add 'kubectl{{=}}~1.27'}}		# apk add 'kubectl{{=}}~1.30'}}

	{{Note\|In the future you will manually have to add a newer version the same way to upgrade.}}		{{Note\|In the future you will manually have to add a newer version the same way to upgrade.}}

Richard.Aik: /* Contributers */

2024-08-24T13:01:31Z

Contributers

← Older revision		Revision as of 13:01, 24 August 2024
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	* Mike Zolla [https://github.com/Zolla-Zolla Github] [https://www.linkedin.com/in/mike-zolla-5903b8/ LinkedIn]		* Mike Zolla [https://github.com/Zolla-Zolla Github] [https://www.linkedin.com/in/mike-zolla-5903b8/ LinkedIn]
	* Matthew Emmett [https://github.com/mattemmett Github] [https://www.linkedin.com/in/mattemmett/ LinkedIn]		* Matthew Emmett [https://github.com/mattemmett Github] [https://www.linkedin.com/in/mattemmett/ LinkedIn]
			* Richard Aik [https://github.com/richardaik Github] [https://www.linkedin.com/in/zushyongaik/ LinkedIn]

	-----		-----

Richard.Aik: /* 1. Setup the Repositories 📗 */

2024-08-24T13:00:11Z

1. Setup the Repositories 📗

← Older revision		Revision as of 13:00, 24 August 2024
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	{{Cat\|/etc/apk/repositories\|#/media/cdrom/apks		{{Cat\|/etc/apk/repositories\|#/media/cdrom/apks
	http://dl-cdn.alpinelinux.org/alpine/v3.17/main		http://dl-cdn.alpinelinux.org/alpine/v3.20/main
	http://dl-cdn.alpinelinux.org/alpine/v3.17/community		http://dl-cdn.alpinelinux.org/alpine/v3.20/community
	#http://dl-cdn.alpinelinux.org/alpine/edge/main		#http://dl-cdn.alpinelinux.org/alpine/edge/main
	http://dl-cdn.alpinelinux.org/alpine/edge/community		http://dl-cdn.alpinelinux.org/alpine/edge/community

Rtyler: update for new versions

2024-05-04T01:00:46Z

update for new versions

← Older revision		Revision as of 01:00, 4 May 2024
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	{{Cmd\|# echo "br_netfilter" > /etc/modules-load.d/k8s.conf		{{Cmd\|# echo "br_netfilter" > /etc/modules-load.d/k8s.conf
	# modprobe br_netfilter		# modprobe br_netfilter
	# echo 1 > /~~proc/sys/net~~/~~ipv4/ip_forward~~		# sysctl net.ipv4.ip_forward{{=}}1
			# echo "net.ipv4.ip_forward{{=}}1" >> /etc/sysctl.conf
	# apk add {{Pkg\|cni-plugin-flannel}}		# apk add {{Pkg\|cni-plugin-flannel}}
	# apk add {{Pkg\|cni-plugins}}		# apk add {{Pkg\|cni-plugins}}
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	'''Fix flannel'''		'''Fix flannel'''

			''NOTE: This may no longer be necessary on newer versions of the flannel package''

	{{Cmd\|# ln -s /usr/libexec/cni/flannel-amd64 /usr/libexec/cni/flannel}}		{{Cmd\|# ln -s /usr/libexec/cni/flannel-amd64 /usr/libexec/cni/flannel}}

Thomas: /* Bonus 🌦️ */

2024-05-02T07:06:04Z

Bonus 🌦️

← Older revision		Revision as of 07:06, 2 May 2024
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	kubectl events -A		kubectl events -A
	</pre>		</pre>
	= Bonus <span class="emoji" data-emoji="cloud">🌦️</span> =		= Cloud Bonus <span class="emoji" data-emoji="cloud">🌦️</span> =

	A description of the cloud init version is avalable at [[K8s_with_cloud-init]]		A description of the cloud init version is avalable at [[K8s_with_cloud-init]]

	[[Category:Virtualization]]		[[Category:Virtualization]]

Thomas at 07:05, 2 May 2024

2024-05-02T07:05:43Z

← Older revision		Revision as of 07:05, 2 May 2024
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	kubectl events -A		kubectl events -A
	</pre>		</pre>
			= Bonus <span class="emoji" data-emoji="cloud">🌦️</span> =

			A description of the cloud init version is avalable at [[K8s_with_cloud-init]]

	[[Category:Virtualization]]		[[Category:Virtualization]]

Sertonix: replace /etc/init.d with rc-service

2023-11-17T10:34:34Z

replace /etc/init.d with rc-service

← Older revision		Revision as of 10:34, 17 November 2023
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	{{Cmd\|# rc-update add ntpd		{{Cmd\|# rc-update add ntpd
	# ~~/etc/init.d/~~ntpd start		# rc-service ntpd start
	# ~~/etc/init.d/~~containerd start}}		# rc-service containerd start}}

	'''Fix flannel'''		'''Fix flannel'''

Buzzable at 09:35, 16 June 2023

2023-06-16T09:35:06Z

← Older revision		Revision as of 09:35, 16 June 2023
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	'''Pin your versions!''' If you update and the nodes get out of sync, it implodes.		'''Pin your versions!''' If you update and the nodes get out of sync, it implodes.

	{{Cmd\|# apk add 'kubelet{{=}}~1.26'		{{Cmd\|# apk add 'kubelet{{=}}~1.27'
	# apk add 'kubeadm{{=}}~1.26'		# apk add 'kubeadm{{=}}~1.27'
	# apk add 'kubectl{{=}}~1.26'}}		# apk add 'kubectl{{=}}~1.27'}}

	{{Note\|In the future you will manually have to add a newer version the same way to upgrade.}}		{{Note\|In the future you will manually have to add a newer version the same way to upgrade.}}