{{tag>Brouillon K8S}}

= Notes Kubernetes k8s - Install Node


== Prérequis

Prérequis :
 * Unique mac addresses et ''/sys/class/dmi/id/product_uuid''
 * Pas de swap



=== Debian

Voir : 
* https://cyril.deguet.com/fr/2018/02/12/kubernetes-debian-vps/
* https://www.digitalocean.com/community/tutorials/how-to-create-a-kubernetes-cluster-using-kubeadm-on-debian-9
* https://gist.github.com/apokalyptik/99cefb3d2e16b9b0c3141e222f3267db
* https://www.server-world.info/en/note?os=Debian_10&p=kubernetes&f=3
* https://www.nuxeo.com/fr/blog/installing-kubernetes-moving-from-physical-servers-to-containers/


=== Generic all Debians

<code bash>
# generic
apt-get install -y yq vim atop tmux sudo

# for apt-get
apt-get install -y apt-transport-https ca-certificates curl gpg
</code>

A faire : 
 * Changer hostname
 * Mettre à jour ''/etc/hosts''
 * Copier la clef SSH ''ssh-copy-id''
 * @ip /etc/network/interfaces.d/vlan100 ou netplan


<code bash>
apt-get install
apt-get install network-manager
</code>

''/etc/netplan/00-network-manager.yaml''
<code yaml>
network:
  version: 2
  renderer: NetworkManager
</code>


** Netplan avec NetworkManager bug -- Solution : **

<code bash>
apt-get purge  '*netplan*'
systemctl disable --now systemd-networkd.service
</code>


<code bash>
chmod 600 /etc/netplan/00-network-manager.yaml
netplan try
netplan apply --debug
netplan apply

nmcli connection add con-name vlan100 ifname enp7s0 type ethernet ip4 192.168.100.21/24
nmcli connection up vlan100

hostnamectl hostname vmdeb01

#echo -e "$(hostname -I | awk '{print $2}')\t\t$(hostname)" >> /etc/hosts
echo "192.168.100.21  vmdeb01.local vmdeb01" >> /etc/hosts
echo "192.168.100.22  vmdeb02.local vmdeb02" >> /etc/hosts

apt-get install openssh-server

adduser admin

echo "admin ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers.d/admin
</code>


<code bash>
# sysctl params required by setup, params persist across reboots
cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.ipv4.ip_forward = 1
EOF

# Apply sysctl params without reboot
sudo sysctl --system
</code>

Vérif
<code bash>
sysctl net.ipv4.ip_forward
</code>

Source : https://kubernetes.io/docs/setup/production-environment/container-runtimes/#cgroup-drivers



=== Old - conf Docker


<code bash>
groupadd -g 500000 dockremap
groupadd -g 501000 dockremap-user
useradd -u 500000 -g dockremap -s /bin/false dockremap
useradd -u 501000 -g dockremap-user -s /bin/false dockremap-user

echo "dockremap:500000:65536" >> /etc/subuid
echo "dockremap:500000:65536" >> /etc/subgid
</code>

<code ->
useradd is a low level utility for adding users. On Debian, administrators should usually use adduser(8) instead.
</code>

''/etc/docker/daemon.json''
<code json>
{
  "userns-remap": "default"
}
</code>



=== Old


''/etc/docker/daemon.json''
<code javascript>
{
  "exec-opts": ["native.cgroupdriver=systemd"],
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "100m"
  },
  "storage-driver": "overlay2"
}
</code>

<code bash>
sudo update-alternatives --set iptables /usr/sbin/iptables-legacy
sudo update-alternatives --set ip6tables /usr/sbin/ip6tables-legacy
sudo update-alternatives --set arptables /usr/sbin/arptables-legacy
sudo update-alternatives --set ebtables /usr/sbin/ebtables-legacy
</code>



<code bash>
systemctl restart docker.service
</code>