Wondering how to resolve Linode dns slow? We can help you.

At Bobcares, we offer solutions for every query, big and small, as a part of our Server Management Service.

Let’s take a look at how our Support Team help a customer  deal with this linode query.

How to resolve Linode dns slow?

When someone tries to access a web page, they usually enter a name of a site like example.com into the browser.

The browser doesn’t automatically know anything about example.com, so it asks the computer to find out where to look for it on the network.

The computer goes and sends a request to a DNS server.

If DNS is not functioning or responding slowly, the page request will be delayed or never get sent out.

Today, let us see the steps followed by our Support Techs to troubleshoot it

Wait for Propagation

DNS updates will take effect, or propagate, within the time period set by your zone file’s TTL.

If you’ve just made a DNS change and aren’t seeing it reflected yet, the new information may not be available for up to 48 hours.

While you can’t control DNS caching at every point on the Internet, you do have control over your web browser.

Try holding down the Shift key or the Control key while you refresh the page to bypass your browser’s cache of the old DNS data.

You can also try bringing up your site in an alternate browser or editing your hosts file to preview your website without DNS.

Set the Time To Live or TTL

In the context of DNS, Time to Live (TTL) tells internet servers how long to cache particular DNS entries.

The default TTL for Linode domain zone files is 24 hours.

This is fine for most situations because most people don’t update their IP addresses often.

However, there are times when you’ll want the TTL to be as low as possible. For instance, when you make a DNS change, you’ll want that change to propagate quickly.

Otherwise, some people will see the new site right away, and others will still visiting the website at your old server.

Long caching times can be even more problematic when it comes to email, because some messages will be sent to the new server and some to the old one.

The solution is to lower your TTL before making a DNS change. You’ll want to lower the TTL first, before making any other DNS changes.

Here’s a general overview of what should happen during a smooth DNS update:

1. Firstly, check the TTL value for the DNS record you will be updating. Typically, this will be 24 or 48 hours.
2. Update the relevant DNS records 48 to 96 hours in advance, taking into account any intermediate DNS servers. Lower the TTL to five minutes/
3. Then, wait out the original 48 to 96 hours.
4. Visit your domain’s DNS records in the Linode Cloud Manager again to update your IP address and anything else needed.
5. Finally, the DNS changes should propagate within 30 minutes.

Find Current DNS Information

Sometimes you may need to find the current DNS information for a domain.

There are two great tools for doing this:

• dig: Look up individual DNS entries. For example, you can find the IP address where your domain resolves.
• whois: Find your registrar and nameserver information for your domain.

If you’re using a computer that runs macOS or Linux, you can use these tools from the command line.

To find your domain’s IP (the primary A record), run:

dig example.com

Look in the answer section of the output to locate your IP address.

You can also query for other types of records. For example, to see the mail records for a domain, run:

dig mx example.com

This returns all of your domain’s MX records.

To find your domain’s registrar and nameserver information, run:

whois example.com

This generates a large amount of information about the domain.

The basic information you need will be near the top of the output, so you might have to scroll back to see it.

Name Resolution Failures

If you have DNSSEC enabled at your domain’s registrar it will cause name resolution failures such as NXDOMAIN when an attempt is made to access the DNS.

This is because the Linode DNS Manager does not support DNSSEC at this time.

[Need a solution to another query? We are just a click away.]

Conclusion

Today, we saw steps followed by our Support Engineers to resolve Linode dns slow