Building Kibana - TLS error when downloading dependencies (Manual Setup) about docs HOT 4 OPEN

@jajohnsonpro
We followed exact same steps however we didn't face mentioned issue and build completed successfully.
Can you please give us more info like - Openssl version that is installed at your end, it is OpenSSL 1.0.2g with TLSv1.2?
If you could check whether nodejs download link is blocked on the system (while using proxy)?

from docs.

Sorry it took so long to get back with you. I tried this with openssl versions 1.0.2t, 1.0.2g, and 1.1.0l. Still no luck. I tried to run node with a https get command with the corporate proxy for nodejs.org, but got the same error ECONNREST. Is there possibly some sort of NodeJS environment variable that may have been missed in the documentation?

from docs.

Hi,
where youre probably going is hardcoded in https:// in https://github.com/elastic/kibana/blob/ec78348db74ec3eb618d01c171563f63229cbeb7/src/dev/ci_setup/setup_env.sh
https://github.com/elastic/kibana/blob/b54c1a1d2be4ab4b91477b13b313cbbbb2ec5796/src/dev/build/tasks/nodejs/node_download_info.js
https://github.com/elastic/kibana/blob/b54c1a1d2be4ab4b91477b13b313cbbbb2ec5796/src/dev/build/tasks/nodejs/node_shasums.ts
https://github.com/elastic/kibana/blob/b54c1a1d2be4ab4b91477b13b313cbbbb2ec5796/src/dev/build/tasks/nodejs/node_shasums.test.ts
which is us-central1-elastic-kibana-184716.cloudfunctions.net you can try to openssl test what tls level they tolerate. You can also put --verbose on the yarn build although probably wont give you much. Try some or all of these as well:
ENV http_proxy=http://
ENV https_proxy=http://
ENV HTTP_PROXY=http://
ENV HTTPS_PROXY=http://
ENV NODE_TLS_REJECT_UNAUTHORIZED=0
npm config --global set strict-ssl false
npm config --global set cafile
npm config --global set proxy http://
npm config --global set https-proxy http://
npm config --global set registry http://registry.npmjs.org/
yarn config set registry http://registry.yarnpkg.com --global
yarn config set --global strict-ssl false
yarn config set --global proxy http://
yarn config set --global https-proxy http://
yarn config --global set cafile
Let me know if that helps

from docs.

@jajohnsonpro I am unable to reproduce it either:

 info [  global  ] Downloading node.js builds for all platforms
   debg Attempting download of https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache/dist/v10.15.2/node-v10.15.2-darwin-x64.tar.gz 8bbb6c15a0572f493d33ef044d06ccd0ff7ead8daa67f9a32df3e863277568e8
....
Downloaded https://us-central1-elastic-kibana-184716.cloudfunctions.net/kibana-ci-proxy-cache/dist/v10.15.2/node-v10.15.2-darwin-x64.tar.gz and verified checksum
....
 info [  global  ] Extracting node.js builds for all platforms

from docs.