IP漂移脚本

vip漂移脚本：

#!/bin/bash
#2020.3.29
#auto change service vip
#by author biyulin
################################
APACHE_NUM=`ps -ef|grep nginx|grep -v check|wc -l`
if [[ $APACHE_NUM -le 1 ]];then
ifdown ens33:1
else
ping -c 2 192.168.43.15 >/dev/null 2>&1
if [ $? -ne 0 ];then
cat >/etc/sysconfig/network-scripts/ifcfg-ens33:1<<EOF
TYPE="Ethernet"
BOOTPROTO="static"
DEVICE="ens33:1"
ONBOOT="yes"
IPADDR=192.168.43.15
NETMASK=255.255.255.0
GATEWAY=192.168.43.1
EOF
ifup ens33:1
fi
fi

vip漂移，加了死循环：
#! /bin/bash
while true;
do
APACHE_NUM=`ps -ef|grep nginx|grep -v check|wc -l`
if [[ $APACHE_NUM -le 1 ]];then
ifdown ens33:1
else
ping -c 2 192.168.43.15 >/dev/null 2>&1
if [ $? -ne 0 ];then
cat >/etc/sysconfig/network-scripts/ifcfg-ens33:1<<EOF
TYPE="Ethernet"
BOOTPROTO="static"
DEVICE="ens33:1"
ONBOOT="yes"
IPADDR=192.168.43.15
NETMASK=255.255.255.0
GATEWAY=192.168.43.1
EOF
ifup ens33:1
fi
fi
sleep 2
done

命令行执行：
while sleep 2;do sh auto_check_nginx_vip.sh;done

定时任务1分钟分割成60s:
#!/bin/bash
#2020.3.29
#auto change service vip
#by author biyulin
################################
step=2
for (( i = 0; i < 60; i=(i+step) )); do
echo "hello world" >>/tmp/log
sleep $step
done
exit 0

php获取系统时间：
<?php
file_put_contents('/root/runlog' , date('Y-m-d H:i:s')."\r\n",FILE_APPEND);
?>