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Use sudo for setting sysctl config

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This commit is contained in:
Johannes M. Scheuermann
2020-04-29 19:29:54 +02:00
parent 9a1ec5d223
commit 496a4ff800
1 changed files with 6 additions and 7 deletions
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content/en/docs/setup/production-environment/tools/kubeadm/install-kubeadm.md
+3 -4
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@@ -56,18 +56,17 @@ route, we recommend you add IP route(s) so Kubernetes cluster addresses go via t
As a requirement for your Linux Node's iptables to correctly see bridged traffic, you should ensure `net.bridge.bridge-nf-call-iptables` is set to 1 in your `sysctl` config, e.g.
```bash
cat <<EOF > /etc/sysctl.d/k8s.conf
cat <<EOF | sudo tee /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
sysctl --system
sudo sysctl --system
```
Make sure that the `br_netfilter` module is loaded before this step. This can be done by running `lsmod | grep br_netfilter`. To load it explicitly call `modprobe br_netfilter`.
Make sure that the `br_netfilter` module is loaded before this step. This can be done by running `lsmod | grep br_netfilter`. To load it explicitly call `sudo modprobe br_netfilter`.
For more details please see the [Network Plugin Requirements](https://kubernetes.io/docs/concepts/extend-kubernetes/compute-storage-net/network-plugins/#network-plugin-requirements) page.
## Check required ports
### Control-plane node(s)