totalnetsolutions.net

First written on Twitter:

@docsmooth: Signs of twitspam: bio is tinyurl; <100 updates, >200 following/ers;all updates “from twitfeed”, inc. link; no conversation. Check yourself!

I just went through my followers list on twitblock.org and thought I’d write a bit deeper on this subject.

Ways to determine a twitter spammer – higher scores are more likely spammers:

• Bio link is tinyurl or bit.ly or other URL shortener. There is *never* a reason to put this in your URL link on Twitter, unless you’re hiding the destination. +10 pts
• you have more than 200 “friends” and less than 100 updates. +2 pts
• you have a follower/following ratio below. .5 +2pts
• Every single tweet has a link. +5 pts
• Every single tweet is from TwitFeed. +5 pts
• More than 2 tweets are from an unregistered API app. +8 pts
• You have never @replied anyone. +1 pts

I generally block anyone above a “9″ score on this scale.

(cross-posted from my personal blog as well)

Upgrading software – always required to keep things secure.  Windows, Wordpress, Mac OSx, Linux, Office, Firefox, etc.  So I just finished upgrading TotalNetSolutions.net again.  Hopefully I’ll be able to be better about this, now that Wordpress does the automatic upgrades now.

I’ve been doing the automatic upgrades on one of my other sites since they came out.  They’re easy, fast, and even more painless than the 3-step upgrade that works so well. So now, I should be able to keep TNS much further away from the “cobbler’s kids” syndrome so many small company’s systems suffer with.

I’ve been using TweetDeck as a Twitter client for a while now, and love it. I recently updated my main laptop from Kubuntu 8.04 to Kubuntu 9.04, and even though the ATI x1300 3d driver is broken, I’m finally getting all the little annoyances fixed up.

The biggest issue I had, though, was after the upgrade, TweetDeck was just showing a blank window, with only the “Tweet/All Friends/Replies/Direct Messages/Groups/Favorites” etc. buttons on the top. There are a lot of posts about how to run Adobe Air and TweetDeck on x64 Ubuntu, but this is a 32-bit machine, so those fixes weren’t working.

The fix is surprisingly simple: make sure kwallet is running with an open wallet. Full details in a nice concise post from Peter Upfold, here. One of his commenters mentioned an issue, but I believe it turned out to be a “no wallets were open” problem. Thanks Peter!

It used to be that you could edit /etc/modprobe.d/blacklist and add “blacklist pcspkr” to turn off the console beeps entirely on Ubuntu / Kubuntu.  As of 9.04, the module is now called “snd_pcsp”.

So, to turn off console (not X terminal, but tty) beeps, you can do one of the following:
1) (This is my preference)

echo blacklist snd_pcsp >> /etc/modprobe.d/blacklist.conf


2) (I’ve done this, but it doesn’t affect all software)

for i in 1 2 3 4 5 6
do
setterm -blength 0 > /dev/tty$i
done

3) (Only works per shell if ~/.inputrc is included)

echo set bell-style visible >> ~/.inputrc


Enjoy more-sane editing from ttyX in the future!

The past week has given me major troubles.  I was tasked with performing a restore of a large database from our offsite storage.  Upon getting the tapes back I found that their indexes were no longer available and I would need to read them in from the tapes…there were only 107 tapes.  Not knowing the software well enough to accomplish this quickly I contacted support, where things began to get more…”interesting”.

After four hours on the phone I was able to determine the two tapes that would be needed to recover the 79Gb database file and started reading in the specific saveset that was needed.  Two hours later I was able to start a restore, which failed.  2Gb of the restore file was missing.  After another two hours on the phone with support I was told “Let’s reposition the tape.  It could take a while, on newer technology I’ve seen it take an hour, on LTO1 and LTO2 drives I’ve seen it take 8 hours.”  You guessed it, I have LTO2 drives.  Fortunately I have a multitude of drives to reposition the tapes with so it won’t impact backups, unfortunately I have a time limit on the restore that’s fast approaching.

So what do you do when you backup your file systems?  Do you simply believe that the software you backup with validates your tapes or do you test them regularly?  Are you satisfied with seeing an email at the end of a backup routine stating “SUCCESS”?  Then answer is simply NO.  Your backups are only as good as your ability to restore from them. Keeping that in mind and all the different technologies and services available what do you choose?

For us the answer is simple.  We require low cost, reliable, offsite secure data storage as do most companies nowadays.  TAPE.  We’ve looked into collocated services and replicated SANs with virtual tape backup but the cost far exceeds it’s benefits.  Tape technology has been proven over and over for decades.  There is no cost effective replacement for a good old fashioned tape, even taking into consideration the troubles it can give you.  Our entire datacenter can be put onto 6 tapes costing $25 each.  4.8TB for $150.

Any good backup initiative should be followed up with an equally adequate restore plan.  So next time you recommend a backup solution plan a regular restore plan to test because there’s nothing worse than spending an entire week restoring one file.