curl -sLS https://get.k3sup.dev | sudo sh
k3sup install --ip 172.19.181.254 --user pi
k3sup join --ip 172.19.181.1 --server-ip 172.19.181.254 --user pi
k3sup join --ip 172.19.181.2 --server-ip 172.19.181.254 --user pi
k3sup join --ip 172.19.181.3 --server-ip 172.19.181.254 --user pi
k3sup join --ip 172.19.181.4 --server-ip 172.19.181.254 --user pi
sudo systemctl status k3s
curl -sLS https://dl.get-arkade.dev | sudo sh
ark
export KUBECONFIG=`pwd`/kubeconfig
kubectl get node -o wide
kubectl top pod --all-namespaces
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$ cat /boot/cmdline.txt
dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1 root=PARTUUID=dafeb7ce-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait ipv6.disable=1 quiet cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory
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But look 👀 at those beautiful colors
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But look 👀 at those beautiful colors
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kubectl get node -o wide
kubectl top pod --all-namespaces
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$ kubectl top node
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
cnat 818m 20% 612Mi 62%
p1 1001m 100% 240Mi 50%
p2 1223m 122% 217Mi 45%
p3 1028m 102% 217Mi 45%
p4 730m 73% 250Mi 52%
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4. parallel programming in Golang 😎
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(also from the "Kubernetes in 15 minutes" link I posted here)
- SD card — 32GB recommended, larger is up to you, but Kubernetes writes to disk a lot and could kill a card, so I tend to prefer buying more smaller cards.
On Thu, Mar 26, 2020 at 5:58 AM Ciprian Manea <cipria...@gmail.com> wrote:
But look 👀 at those beautiful colors
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Jul 07 21:09:21 cnat k3s[900]: time="2020-07-07T21:09:21.684697491+01:00" level=info msg="Waiting for master node startup: resource name may not be empty"
Jul 07 21:09:21 cnat k3s[900]: time="2020-07-07T21:09:21.797304053+01:00" level=info msg="Logging containerd to /var/lib/rancher/k3s/agent/containerd/containerd.log"
Jul 07 21:09:21 cnat k3s[900]: time="2020-07-07T21:09:21.821111918+01:00" level=info msg="Running containerd -c /var/lib/rancher/k3s/agent/etc/containerd/config.toml -a /run/k3s/containerd/containerd.sock --state /run/k3s/containerd --root /var/lib/rancher/k3s/agent/containerd"
Jul 07 21:09:21 cnat k3s[900]: containerd: fork/exec /var/lib/rancher/k3s/data/39a08c3192d96b9e0e5f20e12690a943b118bfe386f1d3df65a573a7a317787d/bin/containerd: cannot allocate memory
Jul 07 21:09:21 cnat systemd[1]: k3s.service: Main process exited, code=exited, status=1/FAILURE
Jul 07 21:09:21 cnat systemd[1]: k3s.service: Failed with result 'exit-code'.
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$ kubectl top node
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
cnat 399m 9% 443Mi 51%
p1 158m 3% 199Mi 40%
p2 152m 3% 185Mi 37%
p3 132m 3% 197Mi 40%
p4 159m 3% 192Mi 38%
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$ kubectl top pod -A
NAMESPACE NAME CPU(cores) MEMORY(bytes)
kube-system coredns-8655855d6-b8b6k 14m 7Mi
kube-system local-path-provisioner-6d59f47c7-sgzwk 13m 10Mi
kube-system metrics-server-7566d596c8-qd86j 9m 15Mi
kube-system svclb-traefik-54krl 0m 1Mi
kube-system svclb-traefik-kssmv 0m 1Mi
kube-system svclb-traefik-lck9l 0m 2Mi
kube-system svclb-traefik-pk929 0m 1Mi
kube-system svclb-traefik-ss27z 0m 1Mi
kube-system traefik-758cd5fc85-nmtj5 16m 11Mi
openfaas alertmanager-5c76b75f44-qck24 1m 6Mi
openfaas basic-auth-plugin-d4c78979-hsm5z 1m 3Mi
openfaas faas-idler-6446b647cc-8bj9m 1m 2Mi
openfaas gateway-d646c99cd-v77kn 13m 14Mi
openfaas nats-7df64f5d8-r6dtk 6m 4Mi
openfaas prometheus-759f55bcbd-6xmml 25m 23Mi
openfaas queue-worker-85dc5d8dc8-xbwwd 1m 2Mi
openfaas-fn figlet-54647f7fc6-jhmlx 5m 2Mi
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Oh, and the most important thing — which I forgot 😊, all your ClusterHAT Pi’s must have these cg* added to cmdline.txt then reboot them to activate itPS. I prefer ipv6.disable=1 but you won’t have to set it 😎$ cat /boot/cmdline.txt
dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1 root=PARTUUID=dafeb7ce-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait ipv6.disable=1 quiet cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory
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After the flash sd card, I directly changed the cmdline by plug and modify it using another pc.When bring the RPi on, seems that it created a new cmdline.txt while modified one were rename into cmdline.oldAfter modify cmdline.txt again directly and reboot, there is no issue of memory cgroup appear.
If you want to add your own options to cmdline.txt before first boot then you can add them before the " init=..." option as reconfig-clusterctrl removes "init=" and everything after it