Temporary failure in name resolution [Errno -3] with Docker
Solution 1
I just did sudo service docker restart
and it worked after. Definitely worth a shot before jumping in to modify your configurations.
Solution 2
I got the same problem with Ubuntu 16.04 and Docker version 17.09.0-ce.
I don't think disabling dnsmasq
is the right solution.
Here is how I solved it:
For Ubuntu
Edit /etc/default/docker and add your DNS server to the following line:
Example
DOCKER_OPTS="--dns 8.8.8.8 --dns 10.252.252.252"
Reference: Network calls fail during image build on corporate network
Solution 3
bkasap's answer changes a system's feature I would say is exaggerated. Further because there are options in docker to do that. The new way to do that is
$ sudo vi /etc/docker/daemon.json
and add following content
{
"dns": ["8.8.8.8", "8.8.4.4"]
}
Don't forget to
sudo service docker restart
Solution 4
On fedora 32 it was problem with firewall. Following command resolved issue:
$firewall-cmd --permanent --zone=trusted --add-interface=docker0
$firewall-cmd --reload
Solution 5
this post worked for me too!
Solved by dns mask [sic] disable:
sudo vim /etc/NetworkManager/NetworkManager.conf
comment out dns=dnsmasq -> #dns=dnsmasq
sudo service network-manager restart (or reboot VM in this case)
Comments
-
monadoboi almost 2 years
I'm following the docker tutorial and am on the part where I have to build the app using:
docker build -t friendlyhello .
It reaches up to step 4, where after a pause I get this error:
Step 4/7 : RUN pip install -r requirements.txt ---> Running in 7f4635a7510a Collecting Flask (from -r requirements.txt (line 1)) Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after connection broken by 'NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7fe3984d9b10>: Failed to establish a new connection: [Errno -3] Temporary failure in name resolution',)': /simple/flask/
I'm not quite sure what this error means and how I can go about solving it.
Thanks for your help!