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Why does it say unable to resolve host?
This error means that the hostname you are trying to connect to cannot be resolved to an IP address. If you have verified that the hostname is correct, there may be a problem with your DNS server (or with your ISP’s DNS server, if you are a standalone user).
Why does Sudo need DNS?
Because sudo rules can specify a hostname, sudo has to resolve the hostnames of the local interfaces (so that it can tell if you’re matching a host-specific rule). As the other Jeff S. said, this is likely because /etc/hosts doesn’t contain “Jebediah-PC”, and so you have to wait for the DNS lookups to fail.
How do you fix Teamspeak failed to resolve hostname?
Solutions:
- Check your information: Double check the server address you input, with the one you were given.
- Check to make sure the server is running: Log into your control panel and see if your server is running.
- Check for problems:
- Local Problem, reset DNS:
Why is my Raspberry Pi unable to resolve host name?
Remedy this by opening the /etc/hosts file in your editor, and changing the hostname for second entry/line 127.0.0.1 to the same name that is in the /etc/hostname file. Using this case as an example, change the second line: And that should take care of it. There you should find one line with the name of your machine.
Why do I get error message Unable to resolve host?
My hostname was “staging_1”. It turns out that you can’t have an underscore in your hostname, which is why I was getting this error. Changing the underscore to a hyphen fixed my problem. In AWS, go to your vpc and turn on “DNS Hostnames”. The symptom given in the question may correlate strongly with this more specific problem:
Why is my Sudo unable to resolve host error?
The root cause of the error was actually related to the hostname changing. Let me show you how to fix this unable to resolve hostname error. First, check the hostname of your system with hostname command. In my case, the hostname is test-server. The hostname is taken from /etc/hostname file.
Why does Raspbian say unable to resolve host?
I have a message saying:”sudo: unable to resolve host (myhostname)” each time i write a command. My hostname do not contain any capital letter or number. thank you Sometimes, even if you’ve changed the host name via raspi-config, the settings don’t stick.