SFTP is the FTP subsystem that is part of SSH, it allows you to do encrypted file transfers. In the past week I have had 2 issues about SFTP not properly transferring files. In one case OpenVOS was the source of  the file and in the other case OpenVOS was receiving the file. In both [...]

Your application is reporting problems reaching the back end database server at 172.16.1.116 or maybe you are about to set up a new application and you want to make sure it can reach the back end database server. The first tool that comes to mind is ping but many hosts will no longer respond to [...]

The other day while working an issue at a customer site I noticed and happened to mention that there were two sets of application processes running, one set running under some generic name like Production.SysAdmin and one set, which had been running for over 3 years, under a person’s name, call him Fred.SysAdmin. It turns [...]

After your VOS or OpenVOS module has been up for a while (a few months or more), you may notice that some of the metering values displayed by various analyze_system requests have gone negative, or some of the percentages are way off. This is caused by the underlying integer counters overflowing; when this happens, they "wrap [...]

You can accomplish many programming tasks in VOS and OpenVOS without knowing the details of how the operating system manages the user address space.  But it is fun to know the details, and sometimes to accomplish a task you need to adjust the default configuration.  This post is an introduction to the VOS user address space. The [...]