Category Archives: Linux

WordPress Error Table ‘alertadigital.wp_wc_follow_users’ doesn’t exist

If you receive an error message like

Apache — Redirect all HTTP requests to HTTPS

This post describes the process of forcing all HTTP traffic to HTTPs.

If we all lived in a perfect world, there would be no need for security. However, we don't, so there is.

One way you can help increase the security of your site and therefore your data, is to only implement ssl protocol in the server, or to block non ssl traffic via the firewall.

Continue reading Apache — Redirect all HTTP requests to HTTPS

ANS2050E TSM needs to prompt for the password but cannot prompt because the process is running in the background.

Always drives me crazy, seems one day my Tivoli backups stop working and we have to enter the password again, this usually causes the service to stop working with the error that is the title of this article.

IF this occurs, do the following;

Continue reading ANS2050E TSM needs to prompt for the password but cannot prompt because the process is running in the background.

Nslookup to list all domain addresses

I occasionally get requests from users looking to determine DNS entries for a domain, but they are not sure of the name or ip address. (Trust me, this really does happen).To fulfill these requests, I generally need to list all domain entries and then review to find out the information.

To do this, it is slightly different on Linux and windows systems. Continue reading Nslookup to list all domain addresses

Change System and Secure Transport Settings

Below is the process used to change the ip, interface and Tumbleweed (Secure Transport v5.1) settings to move server to new location.

It even includes the timeline.

It is expected that the new interface is setup prior to this process.

6:00am

Modified /etc/sysconfig/network-scripts/ifcfg-em2, change “DEFROUTE=no” to “DEFROUTE=yes”.
Modified /etc/sysconfig/network-scripts/ifcfg-em1, change “DEFROUTE=yes” to “DEFROUTE=no”.
executed
ifdown em2 && ifup em2 && ifdown em1
6:01am

Modified /etc/hosts and commented out old ip, added new ip

6:08am

Changed Setup->Allowed Server to new ip

6:19am

I am unable to ping between edge and server. Dropped local firewalls and still unable to ping.

6:35am
Noticed that firewall is natting xx.xxx.xxx.xxx to default hide.

Adding identity nat to ensure ip stays as internal when connecting to yyy.yyy.yyy.yyy.

6:45

Identity nat worked to correct the issue.

Old st2 ip. == ppp.ppp.ppp.ppp

Whats eating my disk space? (Invisible files)

In Linux, it is possible to delete a file that has been opened by multiple processes. If you stop one of the process and delete the file without stopping the other process, the system will still show the disk space as being used.

I recently had this happen, I had a MySQL database that was using 29GB of storage space. I stopped the database, deleted the files and recreated the database. Once complete, I noticed that I didn't reclaim any of the used space.
Continue reading Whats eating my disk space? (Invisible files)