I have a problem with installation Discourse on ec2 AWS instance ubuntu 18.04. I took ami-22741f5a from Ubuntu Amazon EC2 AMI Finder. installed docker sudo apt-get install docker.io docker version Client: Version: 17.12.1-ce API version: 1.35 Go version: go1.10.1 Git commit: 7390fc6 Built: Wed Apr 18 01:23:11 2018 OS/Arch: linux/amd64 Server: Engine: Version: 17.12.1-ce API version: 1.35 (minimum version 1.12) Go version: go1.10.1 Git commit: 7390fc6 Built: Wed Feb 28 17:46:05 2018 OS/Arch: linux/amd64 Experimental: false when I tried to run ./launcher bootstrap app I got cd /pups && git pull && /pups/bin/pups --stdin fatal: unable to access 'https://github.com/SamSaffron/pups.git/': Could not resolve host: github.com fd2db3f069b7e4acf63e853409143403956ad61fd0d5bff9daaed96955af1f67 ** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, there may be more than one. Also I installed ubuntu 18.04 on virtualbox manually and didn’t see this problem. Could you help me? thank you in advance

[image] yuri-zubov: Could not resolve host: github.com Somehow your location is unable to connect to github.

@sam I can resolve host from host machine nslookup github.com Server: 127.0.0.53 Address: 127.0.0.53#53 Non-authoritative answer: Name: github.com Address: 192.30.255.113 Name: github.com Address: 192.30.255.112 also I made git clone https://github.com/discourse/discourse_docker.git /var/discourse to host machine

yes, you absolutely right - I can not get access to internet from the container. docker run -it ubuntu /bin/bash root@656f47f21f17:/# apt-get update Err:1 http://archive.ubuntu.com/ubuntu bionic InRelease Temporary failure resolving 'archive.ubuntu.com' I think problem with DNS resolver. How to fix it?

You can configure docker flags that set the DNS resolver for the docker service and restart the service. It should be using your system DNS but who knows maybe something is a bit broken with the docker install. I suspect though this is the entire network being done vs just DNS, are you sure you can ping places?

@sam I can get internet by IP adress wget http://178.172.160.5 --2018-04-30 07:39:05-- http://178.172.160.5/ Connecting to 178.172.160.5:80... connected. HTTP request sent, awaiting response... 301 Moved Permanently Location: https://www.tut.by/ [following] --2018-04-30 07:39:06-- https://www.tut.by/ Resolving www.tut.by (www.tut.by)... failed: Temporary failure in name resolution. wget: unable to resolve host address ‘www.tut.by’ Could you help me setup DNS settings for docker?

You can see some documentation here: https://success.docker.com/article/how-do-i-set-the-docker-daemon-options [image] dockerd The daemon command description and usage The option you are looking to set is --dns

@sam I tried to ping with this command sudo docker run --dns 8.8.8.8 --rm -it alpine ping -c 1 8.8.8.8 PING 8.8.8.8 (8.8.8.8): 56 data bytes --- 8.8.8.8 ping statistics --- 1 packets transmitted, 0 packets received, 100% packet loss You was right problem with network. Do you know how to fix?

This may help! if You haven’t create a security group for your EC2 instance and allow Destination connections Amazon EC2 security groups for your EC2 instances - Amazon Elastic Compute Cloud Use security groups and security group rules as a firewall to control traffic to and from your EC2 instances.

thank you for helping. on host machine didn’t work DNS-query dig NS tut.by @8.8.8.8 ; > DiG 9.11.3-1ubuntu1-Ubuntu > NS tut.by @8.8.8.8 ;; global options: +cmd ;; connection timed out; no servers could be reached I took ip address from networking interface and add to docker settings dig NS tut.by @172.30.0.55 ; > DiG 9.11.3-1ubuntu1-Ubuntu > NS tut.by @172.30.0.55 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10382 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;tut.by. IN NS ;; ANSWER SECTION: tut.by. 60 IN NS ns1.hosterby.com. tut.by. 60 IN NS ns2.hosterby.com. ;; Query time: 48 msec ;; SERVER: 172.30.0.55#53(172.30.0.55) ;; WHEN: Mon Apr 30 09:04:58 UTC 2018 ;; MSG SIZE rcvd: 83

Discourse docker container has trouble reaching DNS

Product Support Self-hosting

sam (Sam Saffron) April 30, 2018, 7:22am 4

I guess something about your docker network config is blocking it… try doing this from docker run -it ubuntu /bin/bash

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Discourse docker container has trouble reaching DNS

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