Tag Archives: CentOS

Exim Mail Server Troubleshooting Primer Tutorial

Exim Internet Mailer, as our Mail Server software here at this RJM Programming web server, has seemed an enigma, especially when, a while back (tut, tut) it went quite quiet sending out emails to Gmail recipients, at the very least. … Continue reading

Posted in eLearning, Operating System, Tutorials | Tagged , , , , , , , , , , , , , , , , , , , , , , | Leave a comment

MySql Repair Table Failure Diskspace Consequence Tutorial

The previous MySql Repair Table Primer Tutorial outlined some phpMyAdmin administering of MySql (database) maintenance via SQL like … REPAIR TABLE wps_comments; … but what about if the SQL above fails or times out? Well, there can be implications, as … Continue reading

Posted in Database, eLearning, Operating System, Tutorials | Tagged , , , , , , , , , , , , , , , , , | Leave a comment

WHM cPanel cPHulk Firewall Primer Tutorial

For our CentOS Linux Apache/MySql/PHP web server for RJM Programming, we needed to reboot the Apache and MySql services, via the use of an unusual (at least for us, because we couldn’t get graphical WHM cPanel access working) combination of … Continue reading

Posted in eLearning, Hardware, Networking, Tutorials | Tagged , , , , , , , , , , , , , , , | Leave a comment

SSL Certificate Renewal Revisited Tutorial

Way back when with SSL Certificate Renewal Tutorial we renewed the SSL Certificate for the rjmprogramming.com.au domain. What, in practical terms, does that mean? It means a URL such as … https://www.rjmprogramming.com.au … involves encryption, offering a level of security … Continue reading

Posted in eLearning, Tutorials | Tagged , , , , , , , , , , , , , , , , , , , , , , | Leave a comment

CentOS Exim Mail Server Sanity Check Testing Tutorial

To send an email often relies on a Mail Server and accompanying software and hardware and networking to support just such a Mail Server. Here at our Linux web server (CentOS) here at RJM Programming we oversee an Exim Mail … Continue reading

Posted in Ajax, eLearning, Hardware, Networking, Operating System, Software, Tutorials | Tagged , , , , , , , , , , , , , , , , | Leave a comment

Troubleshooting CentOS Web Server Logfile Diskspace Issue Tutorial

When it comes to categorizing the nature of major issues maintaining our RJM Programming domain’s CentOS Linux web server it’s easy to tell you what is top of the list … diskspace … both concerning … inode limits (a Linux/Unix/macOS … Continue reading

Posted in eLearning, Operating System, Tutorials | Tagged , , , , , , , , , , , , , , | Leave a comment

MySql Down Apache Challenged Thinking Tutorial

If you read MySql Down Thinking Followup Tutorial below you’ll get the gist of how our rjmprogramming.com.au web server’s Linux Watchdog works trying to … spot troubles with MySql database(s) … and if found … effectively restart MySql via … … Continue reading

Posted in Database, Tutorials | Tagged , , , , , , , , , , , , , , , , , , | Leave a comment

Troubleshooting CentOS Web Server Disk Zencart Issue Tutorial

Out of the previous CentOS Exim Advanced Configuration Primer Tutorial‘s analysis phases … hard disk space hard disk inode count (for Linux and unix web servers) … that latter one raised its-not-so-good-looking head for two days last Sunday (in the … Continue reading

Posted in eLearning, Event-Driven Programming, Tutorials | Tagged , , , , , , , , , , , , , , , , , | Leave a comment