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27 May 07

IT Resource Center forums - NTP - time server 'rejected'

  • Authorisation is not an issue. If you 'Enable Authorisation' this allows you to respond to encoded requests as well as any other requests. I'm receiving replies from the server - if I had failed authorisation it wouldn't even reply. Thanks anyway; every penny helps!

    I found something interesting in:
    www.lnf.infn.it/computing/unix/ntp/debug.htm
    Debug 8,
    While the algorithm can tolerate a relatively large frequency error (over 350 parts per million or 30 seconds per day), various configuration errors (and in some cases kernel bugs) can exceed this tolerance, leading to erratic behavior. This can result in frequent loss of synchronization, together with wildly swinging offsets. ... If the error increases by more than 22 milliseconds per 64-second poll interval, the intrinsic frequency must be reduced by some means.

    This was written by the same bloke who wrote the protocol.

    I was seeing 104 milliseconds per 64-second poll!! So that symptom is identified but no resolution.


    I also found out more details of the NTP configuration for my router and above. This was not in line with NTP guidelines either. Consequently errors were increasing down the NTP path.

    So in summary: NTP works because you have a selection of time servers. It can make intelligent decisions about which are the best tickers. Please note that when it makes it's decisions it uses the distance to the root, the root dispersion as well as the delay, offset and jitter values for the peer, time intersections and a whole lot else!

    I can only assume that a number of these parameters fell out side error bounds specified in the algorithm; unfortunately I haven't found any definitive documentation to confirm this.

    Due to corporate restrictions it looks like I'm going to have to revert to a dial up service.
    An alternative solution is to set up ntpdate as a cron job but I don't trust my source enough to do that!!
08 Mar 07

Access denied just after installation | drupal.org

  • Session auto start causes drop of session during installation

  • I investigated my case.


    Problem is with option (php.ini): session.auto_start=1


    This brokes work with PHP session in Drupal.


    ---

    I introduce short workaround:


    - at file /includes/bootstrap.inc after line


    case DRUPAL_BOOTSTRAP_SESSION:


    insert this code


    if ( session_id() ) {
        session_write_close();
    }

    BTW, the same workaround I formerly did for Joomla :-)



25 Oct 06

Diigo Forums - tags not appearing in menus

  • I'm using Firefox 2.0 on windows XP. When I use the Diigo toolbar (both
    official release and newest one from Labs), none of my tags appear in
    the drop down menus. Add-ins I'm using:
02 Mar 06

Bugzilla Main Page

  • This is where we put in lots of nifty words explaining all about Bugzilla.

MySQL Bugs: #12676: RHEL4: MySQL RPM installation fails when SELinux is enabled

  • in follow up, from an old post i have read this might help me 'restorecon -R -v
    /var/lib/mysql' yes/no?

MySQL Reference Manual :: 2.4 Installing MySQL on Linux

  • If your installing in a 2.6 kernel, either disable SELinux or set a new policy
    before trying to install MySQL-server. Without it the mysql_install_db and
    mysqld steps of the RPM will fail.
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