centos升級ntpd服務版本修復漏洞

查看ntpd當前版本

ntpd升級步驟
ntpd --version
cat /etc/redhat-release
//下載依賴
yum install gcc gcc-c++ openssl-devel libstdc++* libcap* -y
cp -ar /etc/ntp /etc/ntp.bak
cp /etc/ntp.conf /etc/ntp.conf.bak
cp /etc/init.d/ntpd /etc/init.d/ntpd.bak
cp /etc/sysconfig/ntpd /etc/sysconfig/ntpd.bak
cp /etc/sysconfig/ntpdate /etc/sysconfig/ntpdate.bak
//卸載掉現有的ntp服務
yum erase ntp ntpdate -y
//下載ntp服務安裝包
wget https://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-4.2/ntp-4.2.8p14.tar.gz
tar xf ntp-4.2.8p14.tar.gz
ll
cd ntp-4.2.8p14
install -v -m710 -o ntp -g ntp -d /var/lib/ntp
./configure --prefix=/usr --bindir=/usr/sbin --sysconfdir=/etc --enable-linuxcaps --with-lineeditlibs=readline --docdir=/usr/share/doc/ntp-4.2.8p9 --enable-all-clocks --enable-parse-clocks --enable-clockctl
echo $?
make && make install
echo $?
//還原配置文件
cp /etc/init.d/ntpd.bak /etc/init.d/ntpd
cp /etc/sysconfig/ntpd.bak /etc/sysconfig/ntpd
cp /etc/sysconfig/ntpdate.bak /etc/sysconfig/ntpdate
mv /etc/ntp.bak /etc/ntp
cp /etc/ntp.conf.bak /etc/ntp.conf
date
ntpd --version