Node doesn't go online lookup failed

Node Operators troubleshooting
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1

Hello,
I created a new storagenode running with docker on CentOS 8. The node isn’t working because there is some type of lookup fail.

Error: invalid contact.external-address: lookup “mydomain.de” failed: lookup mydomain.de on 192.168.0.1:53: read udp 172.17.0.3:37498->192.168.0.1:53: read: no route to host

I opened the port 28967 on both my router and firewall-cmd. What can I do about it ? A lookup shows my external IPv4 as it should. Thanks!

2

Are you sure you are using your ddns:28967 in your docker run command under -e ADDRESS?

3

Yes I’m using that. I tried 2 different domain names. All resolve to my external IPv4.

4

Did you happen to put your local IP address where your public IP address should be when entering it into the DDNS?

5

No, and my router is updating when IP change occurs. I’m using https://freedns.afraid.org/ with my own domains.

6

Try running a whois on your domain and see what it comes up as.

7

Only shows my DNS Records. I setup www.domain.de and domain.de as A type pointing to my external IP. Though I don’t need the www one.

8

This is CentOS specific problem with docker
You can take a look on this:

And other similar issues specifically with CentOS: Topics tagged centos

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9

Thank you! These commands solved my problem :slight_smile:

$ sudo firewall-cmd --zone=public --add-masquerade --permanent
$ sudo firewall-cmd --reload
$ sudo systemctl restart docker
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