Elasticsearch- "SELF_SIGNED_CERT_IN_CHAIN"

[MichalMarchewka]

Bug Description

Unable to connect to Elasticsearch when self-signed certificate is used in ES. Response when testing credentials: "SELF_SIGNED_CERT_IN_CHAIN". Also HTTP request does not work, even no error message in response. "Ignore SSL issues" option is selected.

To Reproduce

1. Create Elasticsearch deployment with self-signed certificate (default certificate generated during Elasticsearch installation)
2. Note or re-generate password for 'elastic' built-in user
3. Use proper credentials when configuring Elasticsearch node
4. Test credentials
5. Couldn’t connect with these settings SELF_SIGNED_CERT_IN_CHAIN will be printed

Expected behavior

Even if Elasticsearch has self-signed certificate the communication with ES should be permitted from n8n.

Operating System

Ubuntu Linux 22.04

n8n Version

1.42.1

Node.js Version

18.20.3

Database

SQLite (default)

Execution mode

main (default)