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This article mainly introduces "how to install and use Chrony in Centos" related knowledge, editor through the actual case to show you the operation process, the method of operation is simple and fast, practical, I hope that this "how to install and use Chrony in Centos" article can help you solve the problem.

Chrony is an open source free software that helps you keep your system clock synchronized with the clock server (NTP), so keep your time accurate. Install and use Chrony specific methods in Centos.

Install sudo dnf install chrony-ysudo yum install chrony-y

Centos8 uses firewalld services to manage firewalls. Release ntp Service (123/udp)

Firewall-cmd-- add-service=ntp-- permanent & & firewall-cmd-- reload as the server

Configure the chrony server

Sudo vim / etc/chrony.conf

Delete the NTP server that comes with the configuration. Change to the NTP server address of Ariyun in China.

Add an upstream NTP server

Server time1.aliyun.com iburstserver time2.aliyun.com iburstserver time3.aliyun.com iburst

Allow clients within 192.168.1.0 Compact 24 to obtain time through this server

Allow 192.168.1.0/24

After the configuration is correct, restart the chrony service and configure boot self-startup:

Systemctl restart chronyd.servicesystemctl enable chronyd.service

Use the ss-tlunp | grep chrony or lsof-igrep chrony 123 command to check whether the 123/udp port used by the chrony service has started successfully

As a client

Also install, and then modify the client chrony configuration file

Sudo vim / etc/chrony.conf# Use public servers from the pool.ntp.org project.# Please consider joining the pool (http://www.pool.ntp.org/join.html).# pool 2.centos.pool.ntp.org iburst

# add NTP server

Server time1.aliyun.com iburstserver time2.aliyun.com iburstserver time3.aliyun.com iburst

If you have a self-built chrony client, you can also configure it yourself.

Server 192.168.1.30 iburst

Restart the chrony client service, restart the chrony service, and configure boot self-startup:

Systemctl restart chronyd.service & & systemctl enable chronyd.service-- now

View synchronization status

Chronyc sources-v on "how to install and use Chrony in Centos" is introduced here, thank you for reading. If you want to know more about the industry, you can follow the industry information channel. The editor will update different knowledge points for you every day.

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