When installing Cnavas-lms on docker, I got error below:
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$ source ~/env1/bin/activate
$ ./script/docker_dev_setup.sh
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Welcome! This script will guide you through the process of setting up a
Canvas development environment with docker and dinghy/dory.
When you git pull new changes, you can run ./scripts/docker_dev_update.sh
to bring everything up to date.
Log file is /home/xxxx/repo/canvas/log/docker_dev_setup.log
> It looks like you're using Linux. Let's set that up.
> Checking Dependencies...
Canvas recommends using dory for a reverse proxy allowing you to
access canvas at http://canvas.docker. Detailed instructions
are available at https://github.com/FreedomBen/dory.
If you want to install it, run 'gem install dory' then rerun this script.
Would you like to skip dory? [y/n] n
Install dory then rerun this script.
/o\ Something went wrong. Check /home/xxxx/repo/canvas/log/docker_dev_setup.log
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docker_dev_setup.log says:
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...
Get https://registry-1.docker.io/v2/: dial tcp: lookup registry-1.docker.io: no such host
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Problem
1. Dory installation failed by “no such name” error.
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$ gem install dory
ERROR: Could not find a valid gem 'dory' (>= 0), here is why:
Unable to download data from https://rubygems.org/ - no such name (https://rubygems.org/specs.4.8.gz)
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2. docker_dev_setup.sh failed by lookup error.
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Get https://registry-1.docker.io/v2/: dial tcp: lookup registry-1.docker.io: no such host
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Both problems come from DNS lookup error.
When I run dig registry-1.docker.io, dig gemsruby.org, it’s apparently no way to reach out the external domain.
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$ dig rubygems.org
; <<>> DiG 9.11.3-1ubuntu1.15-Ubuntu <<>> rubygems.org
;; global options: +cmd
;; connection timed out; no servers could be reached
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Setup DNS server for Wifi network
As I configured Ubuntu server connecting to internet over wifi, I needed to configure it by Wifi settings.
Netplan setting
Ref.
I tried some for netplan setting when I did SSH configuration and looked around it. However it did not work (could not reflect DNS server settings in /etc/netplan/01-network-manager-all.yaml to work validly).
/etc/netplan/01-network-manager-all.yaml
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network:
version: 2
renderer: NetworkManager
ethernets:
enp3s0:
addresses: [xxx.xxx.xxx.xxx/24, 'xxxx:xxxx:xxxx:xxxx:xxxx:xxxx/64']
gateway4: xxx.xxx.xxx.xxx
nameservers:
addresses: [xxxx.xxx.xxx.xxx]
addresses: [8.8.8.8, 8.8.4.4]
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However, it did not reflect to look up server names.
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$ sudo systemd-resolve --flush-caches
$ systemd-resolve --status | grep 'DNS Servers' -A2
DNS Servers: 192.168.0.1
DNS Domain: ~.
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Note
- It may work if I set wifi settings on netplan, but I did not try it at this point.
- Or simply change
/etc/systemd/resolved.conf then systemctl restart systemd-resolved.
Wifi settings on GUI
- Ubuntu GUI screen > Settings > Wifi > Kog mark on active network > IP4
- Update “DNS” column. I setup Google DNS with comma separator (
8.8.8.8, 8.8.4.4)
- Reboot ubuntu by
sudo reboot
- Confirmation
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$ systemd-resolve --status | grep 'DNS Servers' -A2
DNS Servers: 192.168.0.1
8.8.8.8
8.8.4.4
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Confirmation
Then I could lookup repository, though I had the other error on ./script/docker_dev_setup.sh.
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$ dig registry-1.docker.io
; <<>> DiG 9.11.3-1ubuntu1.15-Ubuntu <<>> registry-1.docker.io
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63520
;; flags: qr rd ra; QUERY: 1, ANSWER: 8, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;registry-1.docker.io. IN A
;; ANSWER SECTION:
registry-1.docker.io. 49 IN A 54.161.109.204
registry-1.docker.io. 49 IN A 23.23.116.141
registry-1.docker.io. 49 IN A 35.169.249.115
registry-1.docker.io. 49 IN A 52.72.232.213
registry-1.docker.io. 49 IN A 34.231.251.252
registry-1.docker.io. 49 IN A 3.220.36.210
registry-1.docker.io. 49 IN A 34.238.187.50
registry-1.docker.io. 49 IN A 54.156.198.233
;; Query time: 5 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 11 16:48:34 JST 2021
;; MSG SIZE rcvd: 177
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$ dig gemsruby.org
; <<>> DiG 9.11.3-1ubuntu1.15-Ubuntu <<>> gemsruby.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 31113
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;gemsruby.org. IN A
;; AUTHORITY SECTION:
org. 899 IN SOA a0.org.afilias-nst.info. noc.afilias-nst.info. 2014349606 1800 900 604800 86400
;; Query time: 10 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue May 11 16:48:46 JST 2021
;; MSG SIZE rcvd: 104
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References