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#!/bin/bash
#author:dcc
#date:2018/05/26
#version:v1
#description:install chrony
if [ ! -d "$HOME/mylog" ];then
	mkdir $HOME/mylog
fi
config_file="/etc/chrony.conf"
log_path="$HOME/mylog/install.log"

#check chrony whether install
rpm -q chrony >/dev/null
if [ ! $? -eq 0 ];then
#test yum whether can use?

	test01=`yum repolist | grep 'repolist: '|sed -n 's/repolist: //p'`
	if [ "$test01" == "0" ];then
		echo "error_code:1;the yum.repo can't be used" >> $log_path
		echo "Error:yum can not be used"
		exit 1
	fi
	yum -y install chrony > /dev/null && echo "`date`:install chrony success" >> $log_path || echo "`date`:install chrony failed" && exit 1
fi

#config chrony 
sed -ri 's/^(server.*iburst)$/#\1/' $config_file
sed -i  '/joining the pool/a\
server www.dcc.cn iburst' $config_file

#restart and enable chrony
systemctl restart chronyd && echo "`date`:restart chronyd success" >> $log_path || echo "`date`:restart chronyd failed,you can use journalctl -xe to check" >> $log_path && exit 2

systemctl enable chronyd && echo "`date`:enable chronyd success" >> $log_path || echo "`date`:enable chronyd failed" >> $log_path && exit 3

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