<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    <p><br>
    </p>
    <p> </p>
    <p style="margin-bottom: 0in"><br>
    </p>
    <p style="margin-bottom: 0in">Hi Bill!</p>
    <p style="margin-bottom: 0in"><br>
    </p>
    <pre class="western">I didn't see a <b>*full*</b> error.log output Stephen requested. What does:

   sudo cat /var/log/mysql/error.log

say? Note that the file will have all of today's errors, you only need
to look at the latest attempt to start MariaDB (watch the timestamps.)

Putting the output in pastebin.com and adding a link to it here is nice.</pre>
    <dl>
      <dd>
        <table width="621" cellspacing="0" cellpadding="4">
          <colgroup><col width="611"> </colgroup><tbody>
            <tr>
              <td style="border: 1px solid #000000; padding: 0.04in"
                width="611" valign="top">
                <p>Umm: nothing?!</p>
                <p><br>
                </p>
                <p>...Yup: file exists per ls.</p>
                <p><br>
                </p>
                <p>nano: “unwritable” and blank. sudo nano: blank, read
                  0 lines.</p>
                <p><br>
                </p>
                <p>Check permissions: Owner: MySQL Server Read and write</p>
                <p> Group: adm Read only (BJM: ‘adm’??)</p>
                <p> Others: None</p>
                <p><br>
                </p>
                <pre class="western">sudo systemctl enable mariadb  ==>  goes right to Terminal prompt. nothing written to the error log.

sudo systemctl start mariadb  ==>  well that did something!  delay of about 70+ seconds (manual counting) before got this:
 
barry@Backend-3:~$ sudo systemctl start mariadb
Job for mariadb.service failed because a timeout was exceeded.
See "systemctl status mariadb.service" and "journalctl -xe" for details.
barry@Backend-3:~$


Also updated the error log -yea!  ...Ah goodie: I just crashed PasteBin!!
Take two!  …
</pre>
                <h1 class="western"> <font style="font-size: 12pt"
                    size="3">MariaDB error log<span style="font-weight:
                      normal"> <a class="moz-txt-link-freetext" href="https://pastebin.com/bVwNPwB8">https://pastebin.com/bVwNPwB8</a></span></font></h1>
                <p><br>
                </p>
                <p>Hope it means something! </p>
                <p>TIA, Barry</p>
              </td>
            </tr>
          </tbody>
        </table>
      </dd>
    </dl>
    <p style="margin-bottom: 0in"><br>
    </p>
    <p style="margin-bottom: 0in"><br>
    </p>
    <p>
      <style type="text/css">h1 { margin-bottom: 0.08in; }h1.western { font-family: "Liberation Serif", serif; }h1.cjk { font-family: "Noto Sans CJK SC Regular"; font-size: 24pt; }h1.ctl { font-family: "Lohit Devanagari"; font-size: 24pt; }td p { margin-bottom: 0in; }pre.cjk { font-family: "Courier New", monospace; }p { margin-bottom: 0.1in; line-height: 115%; }a:link { }</style></p>
  </body>
</html>