How to sync server time with Network Time Protocol server

Sync server time on Linux with NTP

What is NTP?

An Internet protocol is used to synchronise clocks of computers, for instance linux server. This protocol is known as NTP (Network Time Protocol).

Following steps shows how to sync time using the terminal. Before we start login to the server via terminal and follow the steps given below.

Step 1: Check whether NTP is installed

Use the ntpstat command to view the status of the NTP service on the instance. It may happen that you get an error message prompting that NTP is not installed. In that case you have to install it on the server.

# sudo ntpstat
-bash: ntpstat: command not found

Step 2: Install NTP

Use the following command to install NTP on server.

# sudo yum install ntp

Step 3: Start NTP

After the installation is complete we need to start NTP by using the following command.

# sudo systemctl start ntpd

Note!

Enable NTP to start at boot:

# sudo systemctl enable ntpd

Stop NTP:

# sudo systemctl stop ntpd

Restart NTP:

# sudo systemctl restart ntpd

Step 4: Sync Time

For this use the following command.

# sudo ntpdate -q 0.rhel.pool.ntp.org

And restart NTP

# sudo systemctl restart ntpd

…and the server time will be synced.

Sync server time on Windows with SNTP

What is SNTP?

Simple Network Time Protocol (SNTP) is a simplified version of Network Time Protocol (NTP).  This is used to synchronize computer clocks on a network. As name defines simplified version of NTP is generally used when full implementation of NTP is not needed.

SNTP is a simplified access strategy for servers and clients using NTP. This simplified protocol is widely used to synchronizes a computer’s system time with a server that has already been synchronized by a source such as a radio, satellite receiver or modem. 

Interestingly, SNTP supports unicast, multicast and anycast operating modes. In unicast mode, the client sends a request to a dedicated server by referencing its unicast address. Once a reply is received from the server, the client determines the time, roundtrip delay and local clock offset in reference to the server. In multicast mode, the server sends an unsolicited message to a dedicated IPv4 or IPv6 local broadcast address. Generally, a multicast client does not send any requests to the service because of the service disruption caused by unknown and untrusted multicast servers. The disruption can be avoided through an access control mechanism that allows a client to select a designated server he or she knows and trusts.

Use below code to sync server time on windows machine

@echo on & @setlocal enableextensions

@echo =========================
@echo Turn off the time service
net stop w32time

@echo =========================
@echo Set the SNTP (Simple Network Time Protocol) source for the time server

w32tm /config /syncfromflags:manual /manualpeerlist:"0.it.pool.ntp.org 1.it.pool.ntp.org 2.it.pool.ntp.org 3.it.pool.ntp.org"

@echo =========================
@echo ... and then turn on the time service back on

net start w32time

@echo =========================
@echo Tell the time sync service to use the changes

w32tm /config /update

@echo =========================
@echo Reset the local computer's time against the time server

w32tm /resync /rediscover

@endlocal & @goto :EOF
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Welcome to the Gutenberg Editor

Of Mountains & Printing Presses

The goal of this new editor is to make adding rich content to WordPress simple and enjoyable. This whole post is composed of pieces of content—somewhat similar to LEGO bricks—that you can move around and interact with. Move your cursor around and you’ll notice the different blocks light up with outlines and arrows. Press the arrows to reposition blocks quickly, without fearing about losing things in the process of copying and pasting.

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Beautiful landscape
If your theme supports it, you’ll see the “wide” button on the image toolbar. Give it a try.

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The Inserter Tool

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Go give it a try, you may discover things WordPress can already add into your posts that you didn’t know about. Here’s a short list of what you can currently find there:

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Visual Editing

A huge benefit of blocks is that you can edit them in place and manipulate your content directly. Instead of having fields for editing things like the source of a quote, or the text of a button, you can directly change the content. Try editing the following quote:

The editor will endeavor to create a new page and post building experience that makes writing rich posts effortless, and has “blocks” to make it easy what today might take shortcodes, custom HTML, or “mystery meat” embed discovery.

Matt Mullenweg, 2017

The information corresponding to the source of the quote is a separate text field, similar to captions under images, so the structure of the quote is protected even if you select, modify, or remove the source. It’s always easy to add it back.

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You can change the amount of columns in your galleries by dragging a slider in the block inspector in the sidebar.

Media Rich

If you combine the new wide and full-wide alignments with galleries, you can create a very media rich layout, very quickly:

Accessibility is important — don’t forget image alt attribute

Sure, the full-wide image can be pretty big. But sometimes the image is worth it.

The above is a gallery with just two images. It’s an easier way to create visually appealing layouts, without having to deal with floats. You can also easily convert the gallery back to individual images again, by using the block switcher.

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Code is Poetry

The WordPress community

If you want to learn more about how to build additional blocks, or if you are interested in helping with the project, head over to the GitHub repository.


Thanks for testing Gutenberg!

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