Error when using a bash here-doc “unexpected end of file” [duplicate]

Answer 1

The ENDSSH marker has to be at the left margin:

connectToServer() {
   ssh -t root@$1 << ENDSSH
      echo "Connected to server!"
ENDSSH
}

When using <<- ENDSSH you can indent the marker, but it must be indented with Tab characters, not spaces.

Answer 2

When using the <<- operator, only leading tabs are stripped from the here document and the line containing the marker. You appear to be indenting the closing marker with spaces, so that line appears to be part of the here document, and since the here document never closes, you reach the end of the file while parsing it.

Answer 3

Problem is spaces before closing ENDSSH. Take out all the leading spaces before ENDSSH.