Category: SysAdmin

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SysAdmin

The IP address conflicts with the WAN IP subnet. Please enter a different IP address.

I have been trying to configure my Netgear R6400, the DHCP scope and reservations, to setup my home network with some fixed addresses for my pihole and what not. And all I have been getting for quite a long time, is that frustrating error.

Netgear previously told me to wait for a new firmware update and that was an update or two ago and it never fixed it. And a great deal of the fixes such as remove yourself from assignment as the DNS server simply didn’t work for me.

Recently I updated to V1.0.1.62_1.0.41 and when I tried to update the configuration I received this message. Again. So I decided to try three different changes from the first Google search returns. The second one, simply click the setting under Internet Setup for DNS to “Get Automatically from ISP”, let it reboot, make all your DHCP assignments and scope changes and then set it back worked absolutely great.

YMMV

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SysAdmin

Brother HL-L2380DW Printer Problems are Black and White

Why this fools me like it does is because every time I fix it I think I will remember it, and I don’t. Windows 10 will find the printer and add it and then the text is white and all the background is black. This is from all software and applications.

The fix is to download the correct software from Brother and it is a pain unless you download the entire setup and package.

Problem solved.

Categories
SysAdmin

NOOBS for Raspberry Pi

Where did the day go? Down the rabbit hole of SysAdmin work and so, while not particularly wasted, wasn’t time well spent.

It started when I decided to upgrade my server to Fedora 30, surprisingly enough, that went smoothly, took a coffee break and a lunch hour and everything came up smelling like a rose. I was due after last summer on the cosmic break board.

While that was going on was going on I decided to post a blog entry and that was when I went down the rabbit hole. First I updated all the blogs and then turned to the article and started by heading off to download an infographic from a link I was emailed, but as it was a tracker, it was blocked by my Pi-hole. I attempted to temporarily disable the pihole and found I could not login via the web interface. Using SSH, I was able to determine I had run out of storage space…but why?

I tracked it back to using the version of software, NOOBS that came with it. Lazy and as a result the 8GB card had only 5GB of storage and it was full with the base install. I certainly could have simply deleted a few of the apps (Mathematica and Wolfram Alpha being the largest unused apps I generally pull off) but as it is a rainy day, I optimistically put off gardening to between showers, little sensing how long this was going to take to put a clean copy of Raspbian on it.

It went very slowly, I forgot why I like to pull of those apps, and that old memory card is left to a slow older standalong Pi duties like Pi-hole, the update took forever but eventually I was rewarded with a reloaded from scratch Pi-Hole with plenty of space.

Now I was ready to make a blog entry and be quick about it as the update to Fedora 30, which takes at least a coffee break and full lunch to complete was already done. Except the Pi I used for the Pi-Hole to update wasn’t starting the HDMI. Aha I thought, the old HDMI recognition issue I thought, and sure enough the /boot/config.txt file was mangled slightly with a comment that NOOBS had made changes, argh, I might as well reload this one as the rain continued and so I did. It turned out that my new Pi case with a fan and everything has simply been reluctant to let the HDMI cable go all the way in and by the time I solved that I had updates going everywhere.

So after all of that, I don’t have time to post the entry to the blog, didn’t get any gardening done, didn’t get to read a little, and I am back to where I was at the start of the day although up to date in a maintainable fashion.

I suppose it is worth it; however, I have found that my view has completely changed. I no longer think it reasonable to spend time on System Administration, life is too short.

Hmmmm.

Categories
SysAdmin

SOLVED: tt-rss Update Deamon Not Running after Update

I solved the problem where after an update tt-rss displayed a red box “Update Deamon not Running” [regrets for not having a screen shot of that].

What I found, and I am sure it is in the documentation is that in the tt-rss/lock directory, there are two files: update_deamon.lock and update_deamon.stamp and mind had significantly different time stamps [ ls -l * ], one immediately after the update. I deleted them both and restarted my httpd.service and the deamon ran successfully after that.

I would post this on a support forum or upvote wherever I found it; however, I just took a quick look around for an error log and lock files to warm up my awareness of key issues prior to checking those. Yeah me!

Categories
SysAdmin

Moodle 3.6 Log Problems

I am having backup problems, and was troubleshooting other issues earlier in the year, and my resolution at the semester was to export all the classes, create a clean database and reload the classes thereby getting rid of any cruft issues from a not-as-old-as-one-might-think Moodle setup.
The day started easily but I kept getting a nagging feeling that the classes were to large and found a mdl_log table in the database with entries from years ago and quite a large number of them. Apparently Moodle upgraded and did not remove the old log. So I used TRUNCATE and emptied the table. Of course I had researched the table and implications, backed up the database and so forth.
I then changed the log retention date to 2 days and ran cron repeatedly and was unable to trim the mdl_logstore_standard_log file at all and it was huge as well. I finally used TRUNCATE on that file as well.
I am a week along and the log files are running fine, no logs are appearing in the old table and I am hopeful the current logs are being pruned in accordance with the configuration.
I still haven’t resolved the backup issues and I am sure I have something else in the database and I pass on the obvious lesson that a Moodle site should be completely rebuilt annually, or on some regular schedule, to ensure that old data/tables are pruned or removed effectively.
If I could just resolve the backup stretching out as well as the backups in some, but not all, classes being retained I would have this system under control. Soon though.