Categories: "Networking" or "WiFi"

Pages: 1 2 3 5 7 8 9 10 11 ... 16

01/01/10

  05:22:00 pm, by The Dreamer   , 839 words  
Categories: Hardware, Computer, Networking, Storage, Ubuntu

Converted box to use RAID1

Link: http://wiki.archlinux.org/index.php/Convert_a_single_drive_system_to_RAID

box is such an important server to my home network, while the last time it failed wasn't due to drive failure...there had been times in its past where it was.

And, since I was playing around with RAID a lot on orac, I decided that it was probably time that I convert box to do RAID.

It doesn't need a lot of storage....it has always been a 40GB harddrive of some sort. That had come either as stock in the off-lease system I built it around or from a ReplayTV. The latest incarnation of 'box', a Thinkcentre S51, used SATA drives, so spare drives wasn't something I had a pile of for it.

Now being a Thinkcentre S51, there wasn't much in the way of internal options of doing RAID, but there was a second SATA port on the motherboard. And, it did have USB ports...so at first I was looking at creating RAID using an external harddrive. Either USB or SATA. Leaning towards SATA (had purchased a SATA bracket).

But, I was looking for a pair of small SATA drives....at first one the same size as the current, but then a pair of small/same would do....and more procrastination.

But, then the K-State Student Union computer store had a clearance table out...and on it where various sizes of 2.5" SATA drives. And, I recalled seeing an adapter that would allow me to mount a pair of 2.5" SATA drives in a 3.5" drive bay. There was even a version that had on board RAID (and could do USB)....similar to one of the RAID enclosures connected to orac. Though I wanted to go with mdadm managing my raid in software, since it was a little bit better known to me in its setup, management and recovery. The latter is kind of important, since at work we've had fun in trying to recover systems using hardware RAID after a card/board swap or having it tell us its status by some mean other than wondering if a light shouldn't be on or something while passing by it in the data center.

But, the table had come out before I was going on my winter holidays...so I wasn't in a position to figure things out and buy it. Later when I came back from holidays, I saw that some of the 2.5" drives were still available...and had been marked down even further. The big ones were gone, and a co-worker mentioned that he had gotten a pair of 250G for just such a use. There was a single 80G and 3 120G left. So, either I could get a single enclosure and go with the old external mount of drive plan....or get a pair of 120G drives and explore the 2x2.5 to 3.5 bay adapter route. I ended up buying all 3 of the 120G drives, figuring that I'd have a cold spare for down the road.

I then checked eBay for the adapter....and bought the one that wasn't RAID or anything. I chose a seller that shipped USPS, and it just made it in on New Year's Eve.

During the thinking and research phase, I found the linked to details on how to do what I wanted.... And, I pretty much used it (with minor adjustments to suit my needs, like the differences of my ubuntu release, or that I was going to swtich to having /home on /dev/md1. Or that I wasn't going to reuse the old drive in the conversion, etc.

Pages: 1· 2

11/07/09

  06:30:40 pm, by The Dreamer   , 175 words  
Categories: Software, Computer, Networking

Another problem with karmic upgrade of box

Found another problem with my karmic upgrade of 'box'. The clocks on everything were starting to drift....well 'box' is my NTP server.

I check the ntp.conf, and it was still correct. Then I realized ntp started while bind wasn't....so it omitted a time server to sync with. (and nothing for the initial sync).

So, that's another thing to bounce in /etc/rc.local on boot.

I did find a posting somewhere that suggested apparmor was the causing problems, so I tried removing that....but that didn't solve the problem, though putting it back it did work once....but rebooting again to see if it was a fluke, seemed to say that it was. So, stick with /etc/rc.local as the more reliable way to make sure these things are running..... :**:

Wonder if there'll be a time where I remove this kluge to see if things are fixed...or not. :??:

OTOH, with box on a PowerSource 400, I kind of hope that it'll never go down during typical power outages. Of course, who knows if there'll be another extreme one, like the icepocalypse.

  02:53:14 pm, by The Dreamer   , 219 words  
Categories: Software, Computer, Networking

Upgrading box to karmic

With a couple hours to kill this morning, I decided to see about upgrading 'box' to karmic. Ideally it should've been LTS, but that's another story....

It gave an estimate of one hour to download. Well, it ended up taking those couple of hours. And, then a couple hours more to actually install the updates.

The upgrade was pretty straight forward...I didn't realize that server kernels were gone now, so at first it caught me off guard, guess I didn't pay attention when I upgraded the server at work.

The only problem during the upgrade was the it stopped named, and left things in a state where it could not be restarted. So, things were a bit quirky on my network without DNS, and the box had some issues...not being able to resolve its own name. For some reason during the original install, it had created /etc/hosts with my FQDN but no entry for just the hostname.

Then things went strange....rebooting the box, no DNS running. 'sudo /etc/init.d/bind9 start' and it would start fine. Reboot again....again no DNS.

So, remove and reinstall the package....reboot again, still no DNS. It starts fine by hand after things have booted, but not during boot for some reason. Well, add a line to /etc/rc.local to start DNS. Guess that does it for now.

10/28/09

  01:44:03 pm, by The Dreamer   , 283 words  
Categories: Stuff, Home Theatre, Hardware, Software, Computer, Networking, TiVo HD / Premiere / Elite

Yet another PowerSource 400

Wonder if the people at Xantrex or Amazon.com are wondering what's with all the PowerSource 400s I've been buying?

The latest acquisition brings the total to 5. With the latest being the 3rd unit in one room.

Somewhere in a past shuffle/outage...I had lost a UPS (CPS700AVR), and lost a computer (box). I had rebuilt box, and as interim....put it on the PowerSource 400 that was backing up 'lhaven'. I also put the 8-port [end] switch and my wireless access point onto this PowerSource 400.

This cuts into the available runtime, and its important to me that 'lhaven' never go down. Though its also important from the operation of my home network that 'box' never goes down. And, of course, the switch...and maybe the wireless access point. Though other parts of my home network are on different PowerSource 400's. The stack of equipment at the DSL point is on one, and the stack of equipment at the Cablemodem point on another (though it also includes extra things like 2 TiVo HD's and Expanders and other HT equipment)

So, I have moved 'box' and the network equipment here to the new PowerSource 400....leaving 'lhaven' on its own.

Now the question is whether or not there'll be another 1 in the future....for 'orac'.

Pages: 1· 2

09/20/09

What does My Mess look like today?

Was going through my photo collection and saw that it had been over two years since I last snapped a shot of "My Mess". So, here's what it looks like today:

MyHT20090920

Full story »

08/11/09

  11:18:55 am, by The Dreamer   , 303 words  
Categories: Wireless/iPhone, VoIP, Networking, Cox HSI, AT&T DSL

Saying good-bye to phone service again.

Today, I finally pulled the trigger again....and canceled my home phone service. But, I'm keeping DSL.

Originally, when I first moved to Manhattan, KS there were issues on whether or not I could get a local number from a VoIP provider. And, I was interested in the possibility of getting DSL. Plus as it turned out, I had trouble getting Cox Internet. So, I had to use expensive dialup Internet to feed my habit. :>>

Later I went ahead and ordered DSL, after giving up on ever getting Cox. Of course, once I did that, Cox moved mountains, and got me connected. But, I kept DSL because it had been on my list of things to try....to try being dually connected. Which has been fun, so I'm going to continue to do this.

But, since I got Internet service at home...I haven't used the phone part of my home service.

So, I was sitting around this morning, because I didn't have to go into work, looking for little things to pass the time with....so I decided this was a good time as any to finally make that call.

Getting past the automated phone system to a real person was kind of a pain, but once I got a real people the process went surprisingly well.

So, this Friday my home phone service will be no more. It was kind of useless...at over $27 a month for just basic local service, when pretty much all I do are long distance calls (to Canada...to my mom)...hence the value of VoIP. I had rationalized keeping it for when nothing else is available....but having survived a couple significant power outages recently...I decided that it wasn't as essential.

Yes, I expect my DSL cost to go up....by $10....but it is still a savings....that I can apply to other crazy things.

07/04/09

  01:55:00 pm, by The Dreamer   , 274 words  
Categories: DVDs / NetFlix, Networking, TiVo HD / Premiere / Elite, Cox HSI, AT&T DSL, Doctor Who

How was the Picture Quality of "Doctor Who: The Pirate Planet?"

Yeah, NetFlix asked me about this. :cool:

I was looking around on NetFlix website trying to figure out how to report video problems of instant viewed material. But, couldn't find anything.

At one point during the play back the video broke up and was green...and somewhere after that the audio/video sync was off. Tried pause, ff, rev, stop and restart, but it stayed out of sync.

The only thing I didn't try was switching broadband service. I stayed on Cox for the 3 that I watched yesterday. Even though I have a TiVo HD on Cox and the other TiVo HD on DSL, so it would've been a simple move.

Though both TiVo HDs are direct attached to the cablemodem router...there are two gigabit switches between the cable modem router and the dslmodem router, but wouldn't expect that to have much impact.

Cox should be the faster...pretty I'm supposed to be getting 7Mbps with up to 12Mbps with PowerBoost....though speedtests seem to indicate I get faster speed with my 6MBps DSL service (a fairly consistent 5Mbps). Haven't watched an HD stream on NetFlix, but those had worked better on Cox than DSL. DSL on the other hand is much more reliable. Last lights storm, Cox was out for a few hours. DSL never went down, in fact I managed to stay online during it as well (though I had to make various network configuration tweaks, since most of my home network has Cox as the default gateway)...and had to work fast, since DHCP server has no redundancy and that machine's UPS has short life.

Probably next on my list to get a big UPS for...

07/03/09

  10:58:07 pm, by The Dreamer   , 267 words  
Categories: Networking, Home, Healthcare

UPS, Westar Energy, DPP-600HD and CPAP

Well, here I am sitting in the dark....had to make some reconfigurations of stuff so I can still be online for the moment....

But, this is like the 3 significant outage in the last couple of weeks. Didn't I get a letter earlier this year saying that there had been like 4 in the previous year, and that they were going to be working on improving reliability of the system? Forgot to talk to my doctor about what to do when the power is out, and I want to keep breathing while I'm sleeping....

Earlier I blogged on how I had pulled the trigger on buying a DPP-600HD to maybe have DC power backup for such things. Only problem was that UPS was supposed to deliver it today. Scheduled Delivery July 3rd. It last showed as out for delivery at 4:45am. Obviously they didn't show up at all, even though I canceled my plans for today to stay home and wait for it.

Not sure what has me more annoyed. Since my electric bill goes up every month, even though I'm on average pay plan....and I'm sure running CPAP and the associated others (like needing more AC because it gets warm and wet under the mask otherwise). isn't helping my costs.

Can't say that I'm using more power than I did when I lived in Ohio....and at first my bills seem to match what I used to pay back there. But now its like 60% more.... wonder what I'm getting for it.

Though still, I think I'm more annoyed at UPS still. Though as this power outage stretches on....that's changing.

:##

06/22/09

  01:01:00 pm, by The Dreamer   , 190 words  
Categories: Software, Networking, Ubuntu

Last hiccup with 'box'

While at work this morning, I tried to ssh into 'box'....mainly to make it see the changed ssh host keys. But, turned out it was a test to see that it was working correctly.

I couldn't get to the second ip on 'box'. All my linux servers have 2 IPs, so from the outside they can be hit by either gateway. Using ip route/ip rule, it makes the packets go back out to the correct default gateway for the IP.

Well, turns out the second IP doesn't show up after a boot. If I do '/etc/init.d/networking restart', it appears. But, reboot...and its gone.

After much fiddling, searching, trial and error....I eventually stumbled on it.

The configs were basically the same as my ubuntu 8.04LTS server. Three 'auto' lines for each of the 'iface's. I had tried combining the eth0 entries to 'auto eth0 eth0:0', but that didn't work.

:idea: On a whim, I finally tried having only a single 'auto' line -- 'auto lo eth0 eth0:0' in /etc/network/interfaces. That finally made it have both eth0 and eht0:0 after a reboot. :?:

Now I can ssh into 'box' via either of my gateways. :cool:

06/20/09

  09:52:00 pm, by The Dreamer   , 173 words  
Categories: Computer, Networking, Ubuntu

Calling 'box' done for now....

I'm can't think any more....don't know what's missing that I didn't intend to leave off.

Sure there's stuff that I wouldn't mind having back, and stuff that isn't readily available for the distro I'm using...namely no mondorescue for 9.04 yet. I also couldn't get DHCP peering to work, evidently the rule that both servers be the same version is important. They would start up fine, but once they talk to each other....the second is over. Perhaps I'll sync the servers when the next LTS comes out.

But, I did get ddclient moved (or rather I moved my configs to the version with ubuntu)...and I updated the ip configs to be like my other strange linux boxes.

I suppose I'll slowly comb through the old 'box' HD and figure out the various strange and twisted thigns I've been doing on there. Such as discovering the strangeness of how I've been doing my IVS Status updates.

I suppose one last item would be to make sure I can burn cds with the burner I moved over....

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Now instead of subjecting some poor random forum to a long rambling thought, I will try to consolidate those things into this blog where they can be more easily ignored profess to be collected thoughts from my mind.

Latest Poopli Updaters -- http://lkc.me/poop

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