vscode extensions need to re-install when I connect next time

When I use vscode Remote-SSH, I install some extensions in SSH server.
But when I connect ssh several days later, the extensions have disappeared which means I have to install again.

• vscode-extensions like these:
  • Python
  • Pylance

As far as I know, if you installed the extension on the SSH host, it'll not remove your extension.

You can open your USER settings.json and add the following codes:

  "remote.SSH.defaultExtensions": [
    "ms-python.python",
    "ms-python.vscode-pylance"
  ]

In this way, when you use SSH remote connection, the extension will always remain installed. Read document for more information about Managing extensions.