쿠버네티스 설치 오류 [ERROR FileContent--proc-sys-net-bridge-bridge-nf-call-iptables]: /proc/sys/net/bridge/bridge-nf-call-iptables does not exist

k8s-master: Running provisioner: shell... k8s-master: Running: inline script k8s-master: I0628 11:30:40.411653 14444 version.go:255] remote version is much newer: v1.24.2; falling back to: stable-1.22 k8s-master: [init] Using Kubernetes version: v1.22.11 k8s-master: [preflight] Running pre-flight checks k8s-master: [preflight] WARNING: Couldn't create the interface used for talking to the container runtime: docker is required for container runtime: exec: "docker": executable file not found in $PATH k8s-master: error execution phase preflight: [preflight] Some fatal errors occurred: k8s-master: [ERROR FileContent--proc-sys-net-bridge-bridge-nf-call-iptables]: /proc/sys/net/bridge/bridge-nf-call-iptables does not exist k8s-master: [ERROR FileContent--proc-sys-net-ipv4-ip_forward]: /proc/sys/net/ipv4/ip_forward contents are not set to 1 k8s-master: [preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...` k8s-master: To see the stack trace of this error execute with --v=5 or higher k8s-master: failed to load admin kubeconfig: open /root/.kube/config: no such file or directory k8s-master: To see the stack trace of this error execute with --v=5 or higher k8s-master: cp: cannot stat ‘/etc/kubernetes/admin.conf’: No such file or directory k8s-master: chown: cannot access ‘/root/.kube/config’: No such file or directory k8s-master: Loaded plugins: fastestmirror k8s-master: Loading mirror speeds from cached hostfile