自动根据脚本中new_node节点清单，自动配置ansible hosts，需要注意如果节点已加入集群，需要将已加入节点注释掉，然后再执行add_node.sh否则已加入的节点会重新被初始化配置。

script/k8s/add_node.sh

@@ -6,13 +6,23 @@ new_node=(
 192.168.1.58
 )                #可以写多个node。每行一个。
 interface=eno1 
-#########################################################sshpass
+###############配置节点免密###########
 port=22
 password=seetatech
 for ip in ${new_node[@]}
 do
 sshpass -p $password ssh-copy-id -i ~/.ssh/id_rsa.pub -p $port -o StrictHostKeyChecking=no root@$ip
 done
+##############根据new_node节点清单自动配置ansible hosts########
+for ansible_new_node in ${new_node[@]}
+do
+if ! grep -qF "$ansible_new_node" /etc/hosts; then
+cat >>./hosts<<EOF
+$ip
+EOF
+else echo "您已配置该node：$ip 信息到ansible hosts文件，已跳过该步骤"
+fi
+done
 ########################################
 ansible new_node -m script -a "/root/k8s/script/k8s/backup/1-init.sh"
 ansible new_node -m shell -a "mkdir /opt/kubernetes/{cfg,bin,ssl,log} -pv"
@@ -35,7 +45,7 @@ ansible new_node -m shell -a "systemctl daemon-reload"
 ansible new_node -m shell -a "service flanneld restart"
 ansible new_node -m shell -a "service flanneld status"
 ansible new_node -m shell -a "systemctl enable flanneld.service"
-#############################docker############################################
+#############################安装docker############################################
 echo "当前harbor仓库地址为$harbor_host,"
 sed -i s/harbor_host/$harbor_host/g /root/k8s/config/daemon.json
 echo "开始安装docker"