Problem during installing "yarn package installer" & "solidity compiler"Lesson 5: Ethers.js Simple Storage

[0xSaurabhSharma]

I am not good in articulating my thoughts, please do ignore my mistakes

Doing all actions mentioned below on ubantu 22.04 wsl
I am @6:47:56 in the course and now I was supposed to install "yarn" package manager with the help of "corepack" by using corepack enable and then check yarn version by yarn -v command as mentioned in yarn documentation.

Expacted Action:

corepack enable: it should have activated yarn
yarn -v: should have given yarn version
and then I would have proceed with sol-compiler installation in video

What is happening:

corepack enable: happens nothing
yarn -v: it gives following "things", I don't know what are they

root@LAPTOP-G4PDCC17:~/hh-fcc/ethers-simple-storage# corepack enable
root@LAPTOP-G4PDCC17:~/hh-fcc/ethers-simple-storage# yarn -v
Internal Error: Error when performing the request
    at ClientRequest.<anonymous> (/root/.nvm/versions/node/v16.14.2/lib/node_modules/corepack/dist/corepack.js:3937:20)
    at ClientRequest.emit (node:events:526:28)
    at TLSSocket.socketErrorListener (node:_http_client:442:9)
    at TLSSocket.emit (node:events:526:28)
    at emitErrorNT (node:internal/streams/destroy:157:8)
    at emitErrorCloseNT (node:internal/streams/destroy:122:3)
    at processTicksAndRejections (node:internal/process/task_queues:83:21)
root@LAPTOP-G4PDCC17:~/hh-fcc/ethers-simple-storage# 

======================================================================================

What I have tried so far:
my purpose is it install yarn package manager and solidity compiler on ubantu-wsl

I tried many different solutions given on other forums like to change network, reset dns, not to use proxy

I tried to install classic yarn through npm package also by using npm install --global yarn

root@LAPTOP-G4PDCC17:~/hh-fcc/ethers-simple-storage# npm install --global yarn
npm info using npm@8.5.0
npm info using node@v16.14.2
npm timing npm:load:whichnode Completed in 1ms
.
. // bunch of same npm timings
.
npm timing command:install Completed in 88937ms
npm ERR! code EAI_AGAIN
npm ERR! syscall getaddrinfo
npm ERR! errno EAI_AGAIN
npm ERR! request to https://registry.npmjs.org/yarn failed, reason: getaddrinfo EAI_AGAIN registry.npmjs.org
npm timing npm Completed in 89578ms

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2022-06-13T16_44_19_428Z-debug-0.log

I also tried to install solidity compiler through "npm install solc"

root@LAPTOP-G4PDCC17:~/hh-fcc/ethers-simple-storage# npm install solc
npm info using npm@8.5.0
npm info using node@v16.14.2
npm timing npm:load:whichnode Completed in 0ms
npm timing config:load:defaults Completed in 4ms
.
. // bunch of other npm timing lines
.
npm timing command:install Completed in 88970ms
npm ERR! code EAI_AGAIN
npm ERR! syscall getaddrinfo
npm ERR! errno EAI_AGAIN
npm ERR! request to https://registry.npmjs.org/solc failed, reason: getaddrinfo EAI_AGAIN registry.npmjs.org
npm timing npm Completed in 89625ms

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2022-06-13T16_49_29_604Z-debug-0.log

Thank you in advanced

[PatrickAlphaC]

Amazing write-up!

Looks like this is a DNS issue...

Do any of these answers solve your issue?

https://stackoverflow.com/q/63010779/11969592

[0xSaurabhSharma]

Thank you Sir :)

I tried commands in answer above , but it wasn't solving problem:

npm config rm proxy 
npm config rm https-proxy --tried removing npm proxy 

Then I found altered version of those commands, and it solved :
Link 2

npm config rm proxy
npm config rm https-proxy

Thank you for the course :)

[Ebenezary]

I was experiencing the same issue, but I managed to solve it with the solution above. Thank you for bringing up this issue, and Patrick, thank you for being an amazing person.

[zhliao]

I got the same issue and followed another approach, which added the name server to the config file. It works now.

https://stackoverflow.com/a/72601043