Obscure Ubuntu Tip: CRON User account has expired

No, I haven't forgotten that I have a blog. I've just been keeping busy with a lot going on at work, and a backlog of “projects” at home after finishing up the kitchen project. Some of those projects have involved getting down-and-dirty with Ubuntu, and I thought I would share a quick tip I discovered yesterday.

I was looking through the system log (/var/log/syslog) on one of my servers and I noticed it was full of “CRON[xxxx]: User account has expired” messages. A little searching on the web pointed to the fact that the root account had been locked. While setting up this server, I had followed some instructions I found on the web that required me to unlock the root account, then re-lock it when I was done with the

sudo passwd -l root

command. Locking an account this way also causes the password to be expired, one of the results of which is the above mentioned log entries. Most of the solutions I found on the web involved either unlocking the root again and giving it a long, random password, or manually editing the password files. I think I've found the correct way to fix this though, by using the

sudo chage -E-1 root

command, which sets the root's password to never expire. (Note that the -1 is negative one, not dash L). After using the above command, the system log showed normal CRON log entries, and the root account remained locked.

I hope someone else will find this information to be of use. That's it for my very obscure Ubuntu tip. Join me again soon for another exciting post. I actually have a good sized list of topics to cover on the blog, so hopefully things will settle down and you will hear more from me soon. Thanks for stopping by!