提示:root@master:~/k8s_install/k8s_install_pkg# kubeadm init --config kubeadm-init.yaml
[init] Using Kubernetes version: v1.23.9
[preflight] Running pre-flight checks
[WARNING FileExisting-socat]: socat not found in system path
[WARNING SystemVerification]: this Docker version is not on the list of validated versions: 27.5.1. Latest validated version: 20.10
error execution phase preflight: [preflight] Some fatal errors occurred:
[ERROR FileContent--proc-sys-net-bridge-bridge-nf-call-iptables]: /proc/sys/net/bridge/bridge-nf-call-iptables does not exist
[ERROR FileExisting-conntrack]: conntrack not found in system path
[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`
To see the stack trace of this error execute with --v=5 or higher