Shulou(Shulou.com)06/02 Report--

Centos6.8 configuration Server NTP Service

1.1. Configure the server NTP service 1.1.1. Install and configure NTP

Check if NTP is installed first.

Rpm-qa | grep ntp

Install if not installed

Yum-y install ntp

Set East eighth District time Zone as current time Zone

Rm-rf / etc/localtime

Cp / usr/share/zoneinfo/Asia/Shanghai / etc/localtime

Manually synchronize the network time

Ntpdate-u cn.pool.ntp.org

Configure after installation

Vi / etc/ntp.conf

/ / add the following configuration

/ / allow any host to synchronize time by default

Restrict default ignore

/ / the most active time server in China

Server cn.pool.ntp.org perfer # China National time-receiving Center

Server 0.cn.pool.ntp.org # 1.cn.pool.ntp.org

Server 1.cn.pool.ntp.org

Server asia.pool.ntp.org

Server 0.asia.pool.ntp.org

Server1.asia.pool.ntp.org

/ / allow the upper time server to actively modify the local time

Restrict cn.pool.ntp.org nomodify notrap noquery

Restrict 0.cn.pool.ntp.org nomodify notrap noquery

Restrict 1.cn.pool.ntp.org nomodify notrap noquery

Restrict asia.pool.ntp.org nomodify notrap noquery

Restrict 0.asia.pool.ntp.org nomodify notrap noquery

Restrict 1.asia.pool.ntp.org nomodify notrap noquery

/ / when the external time server is not available, use local time as the time service

Server 127.127.1.0 # local clock

Fudge 127.127.1.0stratum 10

1.1.2. Set NTP service self-startup

Set ntp as a self-starting item

Chkconfig ntpd on

Check to see if startup items 2, 3, 4, 5 are open

Chkconfig-list ntpd

Start the NTP service

/ etc/init.d/ntpd restart

Check the service and monitoring, and look at the places marked in red, indicating that the current ip connection and monitoring are correct

Netstat-tlunp | grep ntp

Check the NTPD service. Wait 5-10 minutes before checking.

/ / 1 View time synchronization status. After startup, it usually takes about 5-10 minutes to start synchronizing time with the external time server. You can query the NTPD service by command

Ntpstat

/ / 2 View the NTP servers on the network and show the relationship between the client and each server

Ntpq-p

/ / local appears in the red box, indicating that the local clock source is configured successfully

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