/opt/cni/bin lost cni 二进制

首先这个东西一般包含在 docker 或者 containerd 的安装包中，可以尝试解压下安装包先确认下安装包是否包含，或者比如 docker 23 可能就没有 docker 24 版本包含那么多二进制

其次如果是自己开发的 cni，那可能需要自己控制下发 cni。

比如 kube-ovn 控制了四个 cni 二进制文件的下发

# /root/feat/kube-ovn/dist/images/install-cni.sh

#!/bin/bash

set -u -e

mkdir -p /usr/local/bin
cp -f /kube-ovn/kubectl-ko /usr/local/bin/
chmod +x /usr/local/bin/kubectl-ko

if [[ -f "/proc/sys/net/ipv4/ip_forward" ]];
    then echo 1 > /proc/sys/net/ipv4/ip_forward;
fi

if [[ -f "/proc/sys/net/ipv6/conf/all/forwarding" ]];
    then echo 1 > /proc/sys/net/ipv6/conf/all/forwarding;
fi

if [[ -f "/proc/sys/net/ipv4/conf/all/rp_filter" ]];
    then echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter;
fi

exit_with_error(){
  echo "$1"
  exit 1
}

CNI_BIN_SRC=/kube-ovn/kube-ovn
CNI_BIN_DST=/opt/cni/bin/kube-ovn

LOOPBACK_BIN_SRC=/loopback
LOOPBACK_BIN_DST=/opt/cni/bin/loopback

PORTMAP_BIN_SRC=/portmap
PORTMAP_BIN_DST=/opt/cni/bin/portmap

MACVLAN_BIN_SRC=/macvlan
MACVLAN_BIN_DST=/opt/cni/bin/macvlan

yes | cp -f $LOOPBACK_BIN_SRC $LOOPBACK_BIN_DST || exit_with_error "Failed to copy $LOOPBACK_BIN_SRC to $LOOPBACK_BIN_DST"
yes | cp -f $PORTMAP_BIN_SRC $PORTMAP_BIN_DST || exit_with_error "Failed to copy $PORTMAP_BIN_SRC to $PORTMAP_BIN_DST"
yes | cp -f $CNI_BIN_SRC $CNI_BIN_DST || exit_with_error "Failed to copy $CNI_BIN_SRC to $CNI_BIN_DST"
yes | cp -f $MACVLAN_BIN_SRC $MACVLAN_BIN_DST || exit_with_error "Failed to copy $MACVLAN_BIN_SRC to $MACVLAN_BIN_DST"