Solaris: ZFS root pools hang system when unavailable

While we are talking about ZFS and not ZFSSA "Systems with a ZFS Root Filesystem Running Certain Solaris 10 patches or Solaris 11 SRUs may Hang if the Disks of the Root Pool Become Temporarily Unavailable" is still a good document to read on My Oracle Support from article ID 2098232.1 so you can learn what symptoms are possible on Solaris just in case this happens to your system!

Weekend Learning: Allowing access to crontab with non-root user

In our environment we have non-root user accounts that can list and modify the crontab entry, and while I never knew the how behind it, today I know after reading My Oracle Support article "How To Allow Only Specific Non-root User(s) to Use Crontab" from document ID 2002877.1 which may help you modify your setup to use specific power user accounts that do not need root access to the OS.

Weekend Learning: Root shell and safety

Did you know that changing the default shell for the root user can be extremely dangerous and if you do it wrong you need to boot off of CD-ROM?  Check out the MOS article "The safe way to change root's default shell" from document ID 1018012.1 so you do not totally toast your system by trying to set your preferences!