[01:30] is it possible to create a live ubuntu server USB drive, like you can with the desktop edition (with persistence)? I tried with unetbootin and it only allowed me to install or check media [01:38] Odd0002: it is my assumption that if you have a second usb drive or have partitioned your drive to leave some free space after the OS, you could easily mount it and have some persistence.. [01:40] (it may not be the magical experience that it is on the desktop live image with persistance, but you ought to be able to store data on it persistently.) [01:41] but you can't actually start up the server edition [01:41] only the installer or an ash shell [01:41] from busybox [01:42] oh :/ [01:43] that's why I'm asking [02:06] CRAP! [02:06] i just ran a bunch of commands I shouldn't have ran - had them copied and pasted [02:06] is there a way to undo that [02:06] depends on the commands, but in general, no. [02:06] i had some rewritecond pasted in... [02:07] hmm can i edit /etc/modsecurity/optional_rules/$f /etc/modsecurity/activated_rules/$f [02:08] with the literal name '$f' in those directories? or all files in those directories? or some files in those directories? [02:08] thats the folder that went through [02:08] https://gist.github.com/anonymous/dcf9ecd7ef3ae2f53264 [02:09] take a look, that's what i ran [02:09] no thats the error that showed up, sorry [02:10] https://gist.github.com/anonymous/240f0ef7e18a563f8e1f - these are the commands that ran [02:10] did any of those actually -do- anything when run? [02:10] looks like a bunch of errors [02:11] i was only worried about the one that said 'done' [02:11] probably the only lines that didn't error were the blank line and the # END line :) [02:11] lol alright thanks [02:11] sorry its been a long day [02:11] i would figure i would check to see if i didnt mess anything up [02:11] always a good idea [02:12] if you want to be sure, tail /var/log/auth.log - you used sudo, so if any of that was actually executed, sudo would have logged the commands [02:12] I've made that similar mistake, pasting a giant pile of unrelated things, and _hoping_ that none of the starts of the lines were anything in the PATH... :) [02:12] shauno: yay good idea :) [02:12] it doesn't look like it should have, but it's kinda comforting seeing for sure [02:12] i didnt use sudo [02:13] but i will tail definitely [02:13] thanks alot [02:13] the actual command inside the loop uses "sudo ln -s ..." [02:13] shit yes you're right [02:14] i dont think it ran anything to be honest [02:14] just some wordpress stuff i was doing [02:14] wait crap it may have.. [02:14] /uploads ; USER=root ; COMMAND=/usr/bin/nano /etc/modsecurity/optional_rules/ [02:19] no [02:19] petey, it has to have been a valid command on one line [02:19] even if that had run, all you would have done is set a couple of variables [02:19] i see [02:20] assuming "/uploads" is not a valid executable on your system [02:20] nope [02:20] its just a folder [02:20] wordpress install [02:24] petey: woot. looks like you got lucky tonight and nothing happened :) [02:27] lol yay sarnould [02:27] thanks === security is now known as megha === udienz_ is now known as udienz [04:02] I have a zfs pool running on samba, but on my windows box I can see the root of the share, when I click on it I get a network resource not found error [05:38] hello! [05:38] so my server can't be accessed by the outside world anymore. can anyone point me in the right direction? [05:39] I do not have a FWDN [05:39] FQDN [05:40] but I do have gin and tonic, which makes it better [05:40] oh and crackers [05:50] This must be a common question I take it.. [06:19] Iapetus: do you have a public IP address on the server? [06:20] no [06:20] yes [06:20] and no [06:21] how is your network connection setup? [06:22] It's a cable modem connected to two computers via a router [06:23] so do you have the router configured to port forward to your server? [06:24] yup [06:24] What is the public IP? [06:26] are you referring to http://www.whatismyip.com/ or how I locally connect to it? [06:26] the actual public IP :) [06:26] so probably what shows up on whatismyip.com [06:27] it probably won't give you shit but: 71.10.98.41 [06:27] hopefully you are using RFC1918 space behind the router. [06:27] crap [06:28] ? [06:29] I have an ethical dilemma... [06:29] I feel like I should just get passout drunk and not care about anything [06:30] life sucks anyway [06:30] no search away on it if you like, you won't find anything [06:31] o7 [06:33] go on then [06:33] have at 'er [06:34] she'll like it [06:34] Iapetus: did you see my private messages to you? === smb` is now known as smb [08:41] Hey there. How do I reserve memory/cpu for Ubuntu? I'm aware of freeze on overload. Remoted didecated server on 11.10. [10:08] I need to have php msqli extension but when I try to install php5-mysql it pulls mysql-common - which I don't need or want [10:12] hi guys.. Ive got exim and cyrus imap on my server. Is there any way that I can check the incoming emails of a user? [10:14] Bongone: check them for what? [10:15] greppy: I want to see if there are incoming emails [10:15] check the log files [10:21] greppy: I want to check how many emails are there. Because the users when they try to pull emails dont receive any [10:28] check the mailq [10:28] I don't know if exim has the mailq command, but you can also look in /var/log/mail.log and see if mail is being delivered. [10:32] What process creates (and doesn't delete) files in /var/tmp/guest.*/ on each boot? It's related to libguest but I've been unable to discover what is creating the directories and using the space === acidflash__ is now known as acidflash [11:02] test [11:27] Hello! Im trying to change the PS1-variable to display current shell+ current directory. PS1='$(0) $(pwd)' doesnt seem to work with printing current shell. ideas? [12:12] Hi there. Any quick way to disable apparmor to allow this? http://pastebin.com/VCmVVivf [12:13] I just want to test VirtFS [12:14] guys i am here https://www.digitalocean.com/community/articles/how-to-install-iredmail-on-ubuntu-12-10-x64 , in the part of https://secure.instantssl.com/products/SSLIdASignup1a and in the select box Select the server software used to generate the CSR: ? [12:14] what i should choose? [12:22] hmm, caraconan didn't wait too long... [13:39] I'm wanting to use mod_sftp in proftpd. however, the server I am using is on 10.04. Aside from upgrading to the latest and greatest, is there anything else I can do to use this mod? [13:40] I tried snatching the .deb from debian sid for proftpd-basic, but it requires libraries of a higher version than what is available in ubunto 10.04 === security is now known as megha === wedgwood_away is now known as wedgwood [14:07] strocknar_: what does that do that sftp in sshd can't? [14:08] easy chroot [14:09] ok [14:09] rssh should do that, though [14:10] right now I use sshd's sftp server [14:10] but am wanting something a bit easier to manage [14:10] tried using rssh? [14:10] nope. but I will now :D [14:10] won't work if the clients need shell access, though [14:11] is the website for that really 'pizzashack.org'!? [14:13] apparently ;) [14:13] "home of pizzacode" :D [14:14] rssh should be available from the repos, though [14:14] RoyK: I may fall back to taht if I can't get proftpd to compile from source [14:14] thanks for the input [14:14] looks like a good tool to have in the belt [17:01] Is it safe to mount and use a RAID array that is recovering? [17:02] I did last night and suddenly one of the drives was found to be faulty and was removed. [17:16] hi guyes [17:16] will I have difficulties if I use `usermod -l ubuntu somethingelse` as ubuntu on a single user system? === LargePrime is now known as Guest37249 === LargePrime_ is now known as LargePrime [17:56] cd [18:07] what's the default "PermitRootLogin" setting for openssh-server [18:07] ? [18:07] no [18:08] that's what i thought [18:08] but i couldnt find that in the package's files :P: [18:08] hence my asking :) [18:08] thanks [18:08] np [18:08] hello [18:09] noob here with an issue that may or may not be of interest to https://bugs.launchpad.net/ubuntu/+source/nagios-nrpe/ [18:09] not sure how to properly search or verify or file if it is needed [18:09] anybody want to guide me through the process or to a resource that can instruct me how to do so? [18:10] If I have a asterisk server having centos or ubuntu or so and hardware core2duo and I make the harddisk image by ddrescue or clonezilla or somehting. and past that image to a P4 Ht technology computer for example (different hardware). will the paste work? will I have any driver issues or something else? (please inform for assuming console based soervers and also for GUI servers)? [18:11] I'm somewhat sure that my nrpe issue is isolated to ubuntu server 12.04 and/or 12.10 [18:13] it seems that its too dificult to have a contigency plan. (what if the server crashes or get burned. we need prompt premade backup) [18:37] kermit: why use nrpe when ssh checks are so much easier to manage? [18:38] RoyK: i've never used nagios [18:39] I have, for 10 years or so [19:00] Hi all. I'm setting up my first ubuntu server with 4 X 3TB drives. I'm reading the documentation but something has me stumped.. (https://help.ubuntu.com/12.04/serverguide/advanced-installation.html) [19:00] It says I need to create a swap area on each disk. Surely this cannot be accurate? From what I've learned having a large swap area is not generally a good idea. [19:01] But from the documentation, it appears to be the case. Would someone help clear things up for me before I proceed and potentially will have to re-do everything at a later date? :) [19:02] Froberg: I don't think swap space is mandatory [19:02] Froberg: how are you configuring the storage in your system? Software RAID, hardware RAID, or none of the above? [19:02] Froberg: nearly everyone likes having swap though, and spreading it across drives makes sense. [19:02] I'm using Software RAID - was planning on RAID 5. [19:02] Froberg: but it makes sense to me to have some place to shove data that is rarely used and doesn't need to live in RAM all the time, if the memory could be more profitably used for something else [19:03] The guideline says twice the swap area of available memory. Would that mean that in my case, with 2GB of memory, that I should create a 1024MB SWAP area on each drive, then? [19:03] Froberg: if you have swap partitions that are not RAIDed, and the drive with the swap goes down, you may (will?) need to reboot the box. [19:03] Or should I do a 4096 on each drive instead? [19:05] Froberg: I'd want 2-4 gigabytes of swap space after raid has been taken into account.. [19:05] Aye, I have allocated 4096 to the first drive already. [19:06] Froberg: I second sarnold's recommendation. [19:06] But I got confused about the documentation and the statement that I had to repeat steps for all drives. [19:06] So you're saying I should keep the 4GB Swap on Drive #1 and repeat for the remaining three?` [19:07] I'm no good at the raid math :/ would that give you 8 gigs of swap or 12 gigs of swap once it is raided together? [19:07] 8gb, I believe. That's a lot of swap for that much RAM. [19:09] Well [19:09] 4 x 3TB = 9TB usable space [19:10] When Raid 5 is used, I mean. [19:10] so by my math I'd end up at 12GB of Sweap [19:10] *swap, sorry [19:11] yeah, that's a lot of swap.. [19:11] which might be nice if you ever move the array toa nother machine with 32 gigs ram :) [19:12] but with two gigs of ram, either way that's a lot of swap. [19:14] http://askubuntu.com/questions/44217/frustrated-with-ubuntu-and-softwareraid-5 been reading that now [19:14] I must admit that not a whole lot of what he's saying makes that much sense to me [19:15] how can i get an ubuntu server to use htaccess [19:16] Froberg: will you be installing your OS to this array or is this solely for your data? [19:16] I will be installing the OS to it as well. [19:16] I was hoping to avoid having to rebuild my server if the OS Drive failed. [19:18] makes sense.. then heed the warning about /boot being mirrored, not raid5.. [19:20] hm [19:20] So we're talking multiple raid implementations? =) [19:20] could be :/ [19:21] .. and stepping firmly outside of my experience [19:21] To be fair.. it seems needlessly complicated. [19:21] I don't this usage scenario is entirely unique [19:21] :S [19:22] I think folks with raid setups tend to do something like simple mirror or 0+1 (or 1+0..) for OS, and maybe raid 5 or raid 6 for their data drives.. [19:24] hm [19:25] with four available drives using two of them on mirroring would defeat the purpose [19:26] indeed [19:28] unless multiple raid levels can be in effect on the same drive [19:28] but.. I lack experience on the subject [19:31] Froberg: yeah, same here. I -expect- it is possible but might complicate repairs well beyond reasonable. [19:32] without Ubuntu Server being backed up though.. I'm really going to be up "shit creek" without a paddle if anything goes wrong with the system drive. [19:33] Just catching up, here. Sorry, I thought you said 3 drives. If you have 4, then yes, it would be 12GB swap, which is crazy…but that's IF you don't put the SWAP on a RAID as well. [19:33] According to the guide the swap is being set up in a raid [19:33] https://help.ubuntu.com/12.04/serverguide/advanced-installation.html [19:34] Next, select the Size of the partition. This partition will be the swap partition, and a general rule for swap size is twice that of RAM. Enter the partition size, then choose Primary, then Beginning. Select the "Use as:" line at the top. By default this is "Ext4 journaling file system", change that to "physical volume for RAID" then "Done setting up partition". [19:34] I take that to mean that the swap area will indeed be part of the raid array [19:34] Ultimately, a RAID-1 is sufficient for SWAP in most cases. [19:35] well sure.. but I want Raid5 for the extra space it grants over Raid1 [19:35] you suggesting I raid1 system on all drives [19:36] then when the system is installed, I Raid5 the remaining free space? === LargePrime is now known as Guest45607 [19:39] Froberg: is there no chance of getting two new drives for the OS that you could mirror? [19:40] All drives are entirely new. [19:40] I just got them today. [19:40] They're being installed in a HP MediaSmart EX490 server where I've upgraded the CPU. [19:40] It has four drive bays (hot swap) and nothing else. [19:40] If it were a matter of adding more disks that would be fine, if it were an option but it's not. [19:40] aww, nuts. [19:41] I'd seriously look into 0+1 or 1+0 or whichever works better. :) [19:41] That would leave me with 6 TB of space [19:41] whereas Raid 5 only removes the space from one drive. [19:41] Yielding, unless my math is off, 9TB of usable storage. [19:41] true enough, but unless you want to boot off a USB stick.... [19:41] actually, how do you feel about booting off USB? :) [19:41] * sarnold runs [19:42] not terribly comfortable, to be honest. [19:42] The server is headless, so I've had to buy a debug cable and attach it to the motherboard for a VGA connection [19:42] The cable will not fit inside the case, as such, it'll have to go. [19:43] oof [19:43] I would like to eliminate the chances of something going wrong that will require me to dismantle the entire server and re-attach it. [19:43] :D [19:43] Booting from a USB seems like a risky thing to do, in this scenario. [19:43] yeah, agreed there. but it does let you use your huge data drives for data with the raid5 without overly complicating repair.. [19:44] well [19:44] if I can raid 1 a small system partition on all drives [19:44] and then raid 5 the remainder when the system is booted [19:44] I don't see any reason why that shouldn't be rock-solid. [19:44] barring dual drive failure [19:45] hrm, that sounds worth trying [19:47] righto [19:47] markthomas - what size to I partition these mythical raid1 partions in, then? :P [19:47] Just checked my web server logs, i have like over 10 different chinese ips that connected to port 22. What should I do? [19:48] run! [19:48] Froberg: what are you doing with this server? [19:48] Samba File Share and Plex Media Server [19:48] rtorrent as well [19:48] stressedfred: fail2ban or denyhosts [19:49] Froberg: and how much RAM did you say you have? [19:49] markthomas: I already have fail2ban installed. [19:49] markthomas 2GB [19:49] stressedfred: then if it's doing its job, those IPs should already be in /etc/hosts.deny [19:50] stressedfred: them connecting isn't a big deal. [19:50] Looking for a second hand 4GB DDR2 module somewhere.. prices went up after ddr3 as usual ;)( [19:50] stressedfred: make sure you do not allow password authentication over ssh, consider using hosts.allow or iptables to limit connection attempts to 'known good' IP ranges that you and your users use (not always feasible..) -- consider using ufw limit ssh/tcp to rate-limit incoming connection attempts from specific ips [19:50] Froberg: No more than 4GB, IMO. If you start paging, you need more RAM. 2GB is a little lite. [19:50] stressedfred: good practice to turn off password auth, but not always feasible. [19:50] Fuck. [19:51] !language | stressedfred [19:51] stressedfred: Please watch your language and topic to help keep this channel family-friendly, polite, and professional. [19:51] Got IPs from North Korea, Ukraine, and Russia too [19:51] Jesus christ. [19:51] markthomas so do I make a 1GB Swap on each drive, or a 4GB swap on each drive? :) [19:52] raid 1 over four drives should still only yield 1 GB of swap, so I think 4? [19:53] Froberg: correct. [19:55] Froberg: overkill, in this case, but with the drive configuration you have… Alternately, if you really want to RAID-5 your swap, do 1.5GB Each. I can't guarantee how well the latter will work. [19:55] I'm indifferent either way. [19:55] As long as the primary storage space is in Raid5 to optimize the available space. [19:55] I will be making backup to external drives so 100% reliability is not absolutely critical [19:55] Still, being able to survive one drive failure would be nice indeed. [19:57] Froberg: if the swap is mirrored, you should be able to stay online if a drive fails. [19:57] what do you know.. random google searching turned this up: http://www.mediasmartserver.net/2011/06/07/guide-how-to-set-up-ubuntu-and-raid5-on-the-mediasmart-server/ [19:58] I love the optimism: "This exercise also likely dedicates too much space for swap, but in the grand scheme of things this should not make much of a difference." [19:59] he's not terribly good at documenting his steps, either :p [20:01] he is also, apparently, letting it configure everything automatically [20:01] which isn't exactly what the official documentation recommends [20:02] I guess one could try his method and see if it even works [20:02] it's not like I have fear of data loss at this point ;) [20:03] Just tried to see what it looked like.. swap at 2.1 GB, 3.0TB Ext4 and 1.0 MB biosgrub [20:03] never seen biosgrub before [20:25] Grub2 has a couple different ways to boot, now: UEFI and BIOS. I guess we know which is being used here. [20:25] aye [20:26] Raid 5 array with 4 drive is set up [20:26] Ubuntu server is installing.. [20:26] swap area landed at six gigs [20:26] no hot spare ;) [20:27] so far my first Ubuntu Server experience has not been as terrifying as I'd suspected. [20:28] largely due to you markthomas and sarnold - so cheers guys. :) [20:35] :) [20:35] accidentally only chose samba package to install [20:36] now I have to add openssh manually [20:36] oh well, learning experiences! [20:36] :D [20:36] I'm setting up a RAID 1 in 2 1TB drives and leaving a third 1TB drive as Hot Spare. Am I being silly for not setting up RAID 5 on all 3 instead? [20:36] well I just did ten minutes of reading on the subject [20:36] so clearly I'm already an expert [20:36] :P [20:36] But the idea behind hot swap is nice, but it's also dangerous imo [20:37] hahaha, same here man, read the IBM documentation on RAIDs. Fascinating topic [20:37] if a degradation of your array is detected, the hot spare will kick in and the array will rebuild [20:37] WITHOUT user interaction [20:37] this stresses the reamining drives and can potentially cause a cascading failure on the other drives [20:37] leaving your with a dead array [20:37] meanwhile if you don't have a hot spare, you'll at least have a shot at backup before rebuilding [20:38] that's why I chose against a hot spare, at least. [20:39] I think I'm gonna try all possible configurations and run tests [20:39] but yah I'll proly stay with RAID 5 on all 3 drives [20:39] what the hell [20:39] now it asks me where to put the grub boot loader [20:40] am I expected to remember all the drive names? :D [20:40] how many virtual drives did you create? [20:40] 4 ext4 and 4 swap [20:40] resulting in one ext4 raid 5 and 1 swap raid5 [20:41] Put the grub bootloader on the first drive (/dev/sda, usually) [20:41] here goes nothing [20:41] allright, it seems like very soon I'll run though the exact same issues than you. Starting my first UbuntuServer installation on an actual server, with hardware RAID [20:41] a list would be nice to have :P [20:42] izanagisan I'm happy to make all your mistakes for you! :)= [20:42] izanagisan: hardware RAID will be somewhat different. The drive configuration will be done before install. [20:42] was done already. A first test with 1 virtual drive, 2 phisical drives RAID 1 [20:42] ... install finished.. rebooting [20:43] hold on to your socks [20:43] so, that'll make the UbuntuServer install process easier, right?. the RAID config will be transparent? [20:43] I'll only see one drive? [20:43] Froberg: the scenario they're describing is unlikely, unless you keep your drives well outside their expected lifespan. But it's not unheard of. Bottom line: back up your stuff. [20:43] izanagisan: you should. Hardware RAID is typically done by the BIOS (some SATA Fakeraid of old would still show multiple drives. Had to do some tweaking then. It's been awhile). [20:44] well markthomas in a scenario like mine.. I've bought all four drives at the same time. Same manufacturer and type. (WD Red 3TB). [20:44] It's not entirely unlikely that they will fail within a short period of each other. [20:44] But hey, a five year warranty is hard to beat. [20:44] Right. If you're concerned, I'd stress them and burn them in BEFORE going into prod. [20:45] it's not like my NAS and media server is a critical application. [20:45] As long as I continue to keep religious backups, I should be fine. [20:45] What are you backing up with? [20:45] markthomas the system is booted and is just slowing a blinking cursor, should I be worried or leave it alone? [20:46] Froberg: leave it for a moment and see what happens. [20:46] backing up to external drives which are then stored at a secondary location [20:47] define "moment" :p [20:47] If it's still not working, it might be time to boot to a rescue CD and try to mount the volume and look at the logs. [20:48] Did you see any output from the OS at all prior to the black screen? [20:48] No [20:49] Okay. Use the rescue boot. [20:50] assuming this is on the boootable usb [20:51] w00t [20:51] second boot worked [20:51] I have terminal! [20:53] system load 1.26, 94 processes, 2% memory usage [20:53] fairly decent! [20:53] dum question but have to ask: when one sets up RAID from the Ubuntu installation, it means there will be a software RAID, controlled by the OS, using the CPU? [20:53] Right. [20:53] and that's prone to failure in case of electric failure? [20:53] I certainly hope not.. [20:54] izanagisan: unless your hardware raid controller has battery backup, there's no difference in risk :) [20:54] Froberg: try to mount the RAID array you created. [20:54] it does, I'm installing on an IBM x3650 M3 with a 5015 RAID card with battery cache [20:54] .. isn't it mounted when the system can boot from it? [20:55] If you booted from the rescue CD, then no. [20:55] And in any case: not exactly. [20:55] I didn't [20:55] It booted all on it's own! [20:55] After being rebooted [20:55] ^,^ [20:55] Cool! Then…never mind. [20:55] Froberg: Error: ",^" is not a valid command. [20:55] Do a df -h just to verify things look right. [20:55] uvirtbot it's a smiley. [20:55] Froberg: Error: "it's" is not a valid command. [20:55] stupid bot [20:56] it says dev/md0 8.2 T, 1.2G used, 7.8T Available [20:56] There you go. [20:57] gravy [20:57] Incidentally, check out LVM sometime. With that much space to play with, it may give you some flexibility in space allocation. [20:58] LVM? [20:58] But in any event, it's time to start doing stuff. Oh, and that system load will drop to zero once the RAID sync is done. [20:58] Logical Volume Manager. [20:58] cool [20:58] I've never done manual stuff on ubuntu before [20:58] only done some sharing from ubuntu desktop [20:59] assuming I should apt-get updates or something first :P [20:59] and install the ssh server [20:59] To patch, apt-get update && apt-get upgrade [21:00] Also, I often use aptitude in place of apt-get. Syntax is very similar (aptitude incorporates some functions of apt-cache as well), but it does a slightly better job with dependencies. [21:00] Just put it on your things-to-look-into list right under LVM. :) [21:00] I shall pretend to know what that means and return to google! [21:00] ;-) [21:00] In the meantime, yes, do the patching and reboot. [21:00] just installed ssh server [21:00] Good. [21:01] the real fun will be adding a static ip to the damn thing [21:01] Easy peasy. [21:01] You know how to use vi? [21:01] I have no idea about anything at all [21:01] or nano, or pico, or…okay. [21:01] I was even considering adding a GUI to the server to help me out a bit. :P [21:01] nano is a file editor right? [21:01] I seem to remember that [21:02] yes. Put 'vi' on that list. Then, type sudo nano /etc/network/interfaces [21:03] You should see: [21:03] auto eth0 [21:03] iface inet eth0 dhcp [21:03] aye [21:03] I see it [21:04] (now working in putty ^^) [21:05] Cool. One sec. [21:06] http://pastebin.ubuntu.com/5719908/ [21:06] Make it look something like that. [21:06] whitespace shouldn't matter. dns-search isn't especially important, unless you have one. [21:06] is dns-search neces.. [21:07] haha :) [21:07] seems a lot like cisco router configuration when you look at it [21:07] For example, if you use comcast for an ISP, you could set it to comcast.com, etc. Or, nothing at all. [21:08] ahg alright :) [21:08] installation went as swiftly as in a regular PC. Well, now to set a static IP and run lots of tests. I'm sort of excited to finally be running UbuntuServer on a real server and not my laptop, hehehh [21:08] Once you're done, use ctrl-x to save, run /etc/init.d/networking restart (ignore the warnings). [21:08]