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  • SYS-5016T-MTFB will not POST without manual assistance (Motherboard: X8STi-F)

    - by Dan
    I have a Supermicro 5016T-MTFB 1U server which I am in the process of setting up, but it has a really strange problem. When the system is powered on it will not POST until I press the reset button a few times, followed by pressing the delete key on the keyboard to "wake it up". If I power it on and do nothing, the fans spin up but nothing else happens at all. After pressing the reset button once, the red "overheat" light comes on and blinks which is supposed to indicate a fan failure - but all the fans are working. Pressing reset again usually stops the blinking, and the system starts the normal POST routine but it will not actually get to the bios screen unless I press delete. If I don't press delete, it just continues to hang. After pressing delete it will take me into the bios setup screen, if I exit without saving changes I can boot the system normally. I was able to successfully install Linux with no trouble...but upon rebooting the same problem happened again. This board has integrated IPMI which I thought was the problem, so I disabled it via the jumper on the board. Did not help. Each time this system powers on, it goes on for a second, then turns off again for another second, then turns back on again. I don't know why it does that. Here is what I put in the system: 1 x Xeon E5630 (Nehalem) 80W TDP (it's not overheating, CPU temps stay under 40 degrees C) 2 x Kingston 2GB x 3 DDR3-1066 Memory ECC, unbuffered, unregistered (kvr1066d3e7sk3/6g) 1 x Intel X25-M 160 GB 2 x Western Digital RE3 1TB

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  • How can I enable PHP5 for a site? Having problems with every single method.

    - by John Stephens
    I'm working on a client site that is hosted on someone's DIY Debian Linux server [Apache/1.3.33 (Debian GNU/Linux)], and I'm trying to install a script that requires PHP5. By default, the server parses .php files with PHP 4.3.10-22, which is configured at /etc/php4/apache/php.ini, according to phpinfo(). On the server I can see a config directory for PHP5 adjacent to the PHP4 directory: /etc/php5.0/apache2/php.ini. I have tried multiple methods to enable PHP5 for the document root where the site's files are hosted, including all available methods mentioned here. By far, the most common suggestion I've found is to add one or both of the following lines to the site's .htaccess file: AddHandler application/x-httpd-php5 .php AddType application/x-httpd-php5 .php Trouble is, when either or both of those lines are present, the site forces my browser to download any .php files requested, without parsing the PHP at all. All of the other methods mentioned in the above article cause a 500 Internal Server Error. There is no hosting control panel I can access in a browser to enable PHP5 for the site, but I do have shell access. When I asked the server administrator about this issue, he encouraged me to search for the answer on Google. Where could I begin to troubleshoot this issue? Are there ways to test or verify the server's specific PHP5 installation and configuration, using the command line or some other method? Do you have other suggestions to enable PHP5?

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  • Unable to connect to shared (iscsitarget) dvd-rw drive on ubuntu karmic box

    - by Develop7
    Intro I have desktop with DVD-RW drive that runs primarily on Linux (namely Ubuntu 9.10). My wife has netbook that rins Windows XP with no cd/dvd drive. There's also LAN through our ADSL modem/router. I've "ported" (actually, I've just grabbed sources and ran dpkg-buildpackage) iscsitarget package from Ubuntu Lucid to Karmic (here are packages), installed it (sudo aptitude install iscsitarget; sudo m-a a-i iscsitarget) and configured it in the following way (/etc/ietd.conf): Target iqn.2020-01.local.develop7-desktop:storage.disc.dvdrw Lun 0 Path=/dev/sr0,Type=blockio #I've skipped commented lines Also, I've opened port 3260 with ufw: $ sudo ufw status | grep 3260 3260 ALLOW 192.168.1.0/24 Problem But (here's the trouble) I still can't connect to this target from Windows box. Microsoft Software iSCSI Initiator screams "Logon failure" upon connect attempt, and, respectively, fails to connect. After unsuccessful connection attempt I've noticed this line in dmesg | tail's output: iscsi_trgt: ioctl(299) invalid ioctl cmd c078690d Question So the question is — what's wrong with my config/iSCSI target/whatever else? Or, in short — what I'm doing wrong? Thanks in advance.

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  • Unable to connect to shared (iscsitarget) dvd-rw drive on ubuntu karmic box

    - by develop7
    Preface: I have desktop with DVD-RW drive that runs primarily on Linux (namely Ubuntu 9.10). My wife has netbook that rins Windows XP with no cd/dvd drive. There's also LAN through our ADSL modem/router. I've "ported" (actually, I've just grabbed sources and ran dpkg-buildpackage) iscsitarget package from Ubuntu Lucid to Karmic (here are packages), installed it (sudo aptitude install iscsitarget; sudo m-a a-i iscsitarget) and configured it in the following way (/etc/ietd.conf): Target iqn.2020-01.local.develop7-desktop:storage.disc.dvdrw Lun 0 Path=/dev/sr0,Type=blockio #I've skipped commented lines Also, I've opened port 3260 with ufw: $ sudo ufw status | grep 3260 3260 ALLOW 192.168.1.0/24 But (here's the trouble) I still can't connect to this target from Windows box. Microsoft Software iSCSI Initiator tells "Logon failure" upon connect attempt. After unsuccessful connection attempt I've noticed this line in dmesg | tail's output: iscsi_trgt: ioctl(299) invalid ioctl cmd c078690d So the question is — what's wrong with my config/iSCSI target/whatever else? Or, in short — what I'm doing wrong? Thanks in advance.

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  • Can't connect to public WiFi with MacBookPro at coffee shops and libraries

    - by Nathan Bowers
    The Problem: I can't connect to public, unencrypted WiFi at my local public library or Peets Coffee. My Setup: Late 2006 MacBookPro running 10.5.8. I have Parallels installed. It's supposed to work like this: 1) Connect to their unencrypted WiFi network 2) Open a browser which redirects you to their "enter password/agree to terms" page. 3) Browse normally. I can connect to the WiFi network, but when I try to authenticate I always get stuck in a redirect loop. It's been like this for a while. Even before I upgraded to 10.5.8. I never have trouble with encrypted networks or regular open WiFi. What I've tried: Disabling Parallels connections in Network Prefs. Superstition: somehow Parallels installed something in the network stack that's messing me up. Pinging the IP address of the WiFi node I'm connected to. I can ping it, it's there, but I still get stuck in this authentication redirect loop. Tried different browsers, tried different cookie and security settings. Even tried IE under Parallels. No dice. Tried flushing DNS cache. Asked library and coffee employees for help. It didn't go well. My Question: Anybody else have this problem? What should I be looking for?

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  • Which database to use and system/db administration by layman [closed]

    - by blah
    So my friend and I got briliant ;) idea for a business. Since it is not predictable whether it will work out or not, we decided to keep cost as low as possible to start with, in particular not to hire anyone. If it will work out as expected it will generate enough profit to hire professionals in few months. But for the first few months we'll be doing everything by ourselfs. He's a business/finance major, and I'm a software developer, so obviously I have to take care of IT :) It will be a webapp, written in python/django. My questions regarding this project: 1) What database should I choose? I'm experienced with oracle, and have been working with SQL Server for a while, but both of them are too expensive(at least now). It's a developer experience, I've never done any dba stuff. I'm looking for something free(as in beer). Looks like MySql or PostgreSQL are most popular in this sector. I would appreciate any comments on which db to choose. I'm open to any suggestions(it doesn't have to be MySql or Postgre). Here's what I know about data: It will be almost dates and numbers, a little bit of text. Searched mainly by dates. Data will almost never be updated, mostly inserted and browsed. From 30k to 300k new records/month. 2) Servers. My idea is to rent two dedicated servers. During normal operation one would be a web server(debian/apache), other would be a db server(debian/?). My recovery plan is to install everything on both, and in case of trouble with one of machines just run everything on the other one. Does it even makes sense? Any other tips appreciated. Thanks.

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  • Exchange 2003 ActiveSync problem

    - by colemanm
    We're having problems getting iPhones to sync properly with SBS 2003 Exchange. When you add a new Exchange ActiveSync account on an iPhone and enter all the pertinent information, it shows a "Verifying Exchange account info" message for a minute or so, then says everything's verified and asks what you want to sync, Mail, Contacts, Calendars... so it looks like it's working. However, when you go to the Mail app and select the Exchange email account, it just shows an "Inbox" folder with nothing in it. When you try refreshing, it attempts for a second, then says "Last Updated" with a timestamp, as if it worked, but there's no mail and no error message/feedback at all. I think I've narrowed it down to some sort of certificate issue, but I'm having trouble finding out where to go from here... I ran MS's Exchange connectivity testing tool with these results: Our cert was purchased from Network Solutions, and I'd already added it to the IIS Default Website for OWA purposes. But this report makes it look like the cert is somehow problematic. I don't know what to do now... Here's a shot of the cert details, just in case:

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  • Problem with network policy rule in Network Policy Server

    - by Robert Moir
    Trying to configure RADIUS for a college network, and have run into the following frustration: I can't set an "AND" condition for group membership of authenticated objects in the network policy rules, e.g. I'm trying to create a NPS rule that says, essentially "IF user is a member of [list of user groups] And is authenticating from a computer in [wireless computer group] then allow access. The screenshot above is the rule I am having trouble with. It does not work as written. The rule underneath it, which is identical in every aspect except the conditions rule, does work. I've tried changing the non-working rule to define each set of groups as "Windows group" rather than specifically as machine and user groups, with no change. With the "faulty" rule enabled and the working one disabled, any attempt to login with a valid account from a machine that is in the wireless computers group gives a 6273 audit event in the windows event log: Reason code 66 - "the user attempted to use an authentication method that is not enabled on the matching network policy". Disabling the "faulty" rule, enabling the other rule and logging in with the same account and computer works just fine.

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  • "Open file location" is broken for Win Live Photo Gallery and Chrome

    - by Arnold Spence
    Symptoms: Windows Live Photo Gallery: Right clicking on an image (.jpg, .png) and selecting the context menu item "Open file location" should open the containing folder in explorer. Instead, I get an error dialog stating "This file does not have a program associated with it for performing this action. Please install a program or, if one is already installed, create an association in the Default Programs control panel." Chrome: After downloading a file (of any type), clicking the down arrow on the download status bar at the bottom and clicking "Show in folder" results in the same error dialog mentioned above. I'm using Windows 7. I'm pretty sure this is a registry entry gone bad but I've been unable to locate any information about this specific problem. It's not a file type association problem as I am not trying to open the files concerned, I'm trying to open an explorer window at the location for the file. I've found a similar issue that somebody had with explorer itself. However, the suggested registry fixes here for "Folder", "Directory" and "Drive" did not solve the problem. Also, If I use the searchbar in explorer to do a search, right click on a file and choose "Open file location", explorer jumps to that location without any trouble. I have not yet identified other programs with this issue.

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  • Is there any limit to AIX 5.3 pipe size ?

    - by snowflake
    Hello, I'm in trouble while performing cat/tail/head operation on large files on Aix 5.3. When asking for a cat of several 1Go file redirected to another one: cat file1 file2 file3 > outputfile The outputfile is limited to 2Go (cat: output error and result file is 2147483647 bytes) Filesystem is jfs2. I successfully uploaded through ftp 10Go files on the filesystem without problem. I found nothing relevant in etc/security/limits: default: fsize = -1 core = 2097151 cpu = -1 data = 262144 rss = 65536 stack = 65536 nofiles = 20000 ulimit -a core file size (blocks) unlimited data seg size (kbytes) 245759 file size (blocks) unlimited max memory size (kbytes) unlimited open files 2000 pipe size (512 bytes) 64 stack size (kbytes) 32768 cpu time (seconds) unlimited max user processes 2048 virtual memory (kbytes) 278527 The problem does not occur on another AIX 5.3 server, I'm just looking for a different configuration that might be the source of the problem. /etc/security/limits on the server without the problem: default: fsize = -1 core = 2097151 cpu = -1 data = 262144 rss = 65536 stack = 65536 nofiles = 20000 ulimit -a on the server without the problem: core file size (blocks, -c) 1048575 data seg size (kbytes, -d) 131072 file size (blocks, -f) unlimited max memory size (kbytes, -m) 32768 open files (-n) 20000 pipe size (512 bytes, -p) 64 stack size (kbytes, -s) 32768 cpu time (seconds, -t) unlimited max user processes (-u) 262144 virtual memory (kbytes, -v) unlimited

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  • Servers in DMZ will not communicate with each other

    - by Tukaro
    (Full disclosure: I rate barely above "noob" when it comes to networking.) My workplace recent got a new web server. Since we're nearing the end of an overhaul of our website, we're doing a slooooow migration between the old web server and the new one. The old webserver (we'll call it SERVOLD) is Windows Server 2008 with IIS 7. It does not have SQL Server installed. The new server (SERVNEW) is Windows Server 2008 R2, IIS 7.5, with the same version of SQL Server installed. Both are located in the DMZ for our network, and both have their own outward-facing IP address (.3 and .4, respectively). Each server can communicate fine with computers within the domain (not in the DMZ), and those same computers have no trouble communicating with either server. Both servers are also accessible from the internet just fine. However, no matter what, these two servers just refuse to recognize each other. They have the same Workgroup name listed (WORKGROUP), and I thought that would be enough for them to recognize each other. What needs to happen such that I can get these two servers to communicate with each other? We want to do a gradual roll-over to the new website (new one uses ASP.NET, old one uses CFMX), so being able to use one database between both servers is a necessity. Thanks!

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  • Running Windows Update inside Windowx XP Mode

    - by Noam Gal
    I am working on a Win 7 Ultimate machine, and was using XP for some development tasks (for compatibility checks). Everything worked like a charm on the XP, including updates. Two days ago I had to switch computer (mainly a new motherboard/cpu), and I had just stuck my old HD inside the newer case. Win 7 worked like a charm - installed all the new drivers, identified everything automatically, no sweat. The trouble started when I tried running my old XP mode - it won't launch, complaining about the cpu change. I figured it's not a big deal, and I deleted the VM, and re-ran XP mode. It told me it can't find it, and offered to create a new one, just what I wanted. I had finished setting up the new XP mode VM, and it seems to work just fine. Got it to use the host network adapter, so I can surf from "inside". But I can't get Windows Update to run. Whenever I click on the "Custom" button on the WU site, after a short while, I get the [Error number: 0x80072EFD] page. I tried several solution from around the web for it (clearing some cache and restarting the wuauserv, even a microsoft fix-it run), but still nothing seems to work. Anyone here has any new tip for me? Thanks.

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  • Backup and Archive Strategy Question

    - by OneNerd
    I am having trouble finding a backup strategy for our code assets that 'just works' without any manual intervention. Goal is to have an off-site backup (a synchronized one) so that when we check-in files, create builds, etc. to the network drive, the entire folder structure is automatically synchronized and backed-up (in real time, or 1x per day) at some off-site location so if our office blows up, we don't lose all of our data. I have looked into some online backup services, but have not yet had any success. Some are quirky/buggy, others limit file size and/or kinds of files (which doesn't work well for developer files). Everything gets checked in and saved to a single server (on a Raid Mirror), so we just need to have a folder on that server backed up/synchronized to some off-site location. So my question is this. What are you using for your off-site backup strategy. What software, system, or service? Is there a be-all/end-all system of backing up your code assets that I just haven't found yet? Thanks

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  • OpenLDAP Authentication UID vs CN issues

    - by user145457
    I'm having trouble authenticating services using uid for authentication, which I thought was the standard method for authentication on the user. So basically, my users are added in ldap like this: # jsmith, Users, example.com dn: uid=jsmith,ou=Users,dc=example,dc=com uidNumber: 10003 loginShell: /bin/bash sn: Smith mail: [email protected] homeDirectory: /home/jsmith displayName: John Smith givenName: John uid: jsmith gecos: John Smith gidNumber: 10000 cn: John Smith title: System Administrator But when I try to authenticate using typical webapps or services like this: jsmith password I get: ldapsearch -x -h ldap.example.com -D "cn=jsmith,ou=Users,dc=example,dc=com" -W -b "dc=example,dc=com" Enter LDAP Password: ldap_bind: Invalid credentials (49) But if I use: ldapsearch -x -h ldap.example.com -D "uid=jsmith,ou=Users,dc=example,dc=com" -W -b "dc=example,dc=com" It works. HOWEVER...most webapps and authentication methods seem to use another method. So on a webapp I'm using, unless I specify the user as: uid=smith,ou=users,dc=example,dc=com Nothing works. In the webapp I just need users to put: jsmith in the user field. Keep in mind my ldap is using the "new" cn=config method of storing settings. So if someone has an obvious ldif I'm missing please provide. Let me know if you need further info. This is openldap on ubuntu 12.04. Thanks, Dave

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  • Openldap, groups, admin groups, etc

    - by Juan Diego
    We have a samba server as PDC with OpenLDAP. So far everything is working, even windows 7 can log on to the Domain. Here is the tricky part. We have many departments, each department has it's own IT guys, and these IT guy should be able to create users in their department and change any info of the users in their department. My Idea was to create 2 groups for each department, For example: Department1 and Admins Department1. Admins Deparment1 has "write" priviledges for members of group Department dn: ou=People,dc=mydomain,dc=com,dc=ec objectClass: top objectClass: organizationalUnit ou: People dn: cn=Admins,ou=Group,dc=mydomain,dc=com,dc=ec objectClass: groupOfNames objectClass: top cn: Admins dn: cn=Admins Department1,cn=Admins,ou=Group,dc=mydomain,dc=com,dc=ec objectClass: groupOfNames objectClass: top cn: Admins Department1 member: uid=jdc,ou=People,dc=mydomain,dc=com,dc=ec structuralObjectClass: groupOfNames I dont know if you should make Department1 as part of Domain Users dn: cn=Deparment1,cn=Domain Users,ou=Group,dc=mydomain,dc=com,dc=ec objectClass: groupOfNames objectClass: top cn: Deparment1 member: uid=user1,ou=People,dc=mydomain,dc=com,dc=ec Or just create the deparments like this. dn: cn=Deparment1,ou=Group,dc=mydomain,dc=com,dc=ec objectClass: groupOfNames objectClass: top cn: Deparment1 member: uid=user1,ou=People,dc=mydomain,dc=com,dc=ec I seems that when you use smbldap tools bydefault the users are part of Domain Users even if you dont have them as part of Domain Users in the memberUid attribute, when I use finger they showup as part of the Domain Users group. I dont want the Departments Admins to be Domain Admins because they have power over all the users, unless I am mistaken. I also have trouble with the ACLs. I was trying to create an acl for members of this Admins group, I was trying with this search, but didnt work ldapsearch -x "(&(objectClass=organizationalPerson)(member=cn=Admins Department1,ou=Group,dc=mydomain,dc=com,dc=ec))" I am open to suggestions.

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  • Bad results converting PDF to EPS on Linux

    - by Tim
    I'm having some trouble converting PDFs (created by Adobe Illustrator on a Mac) to EPS. I have tried several things but I am wondering if there is a better option. The following list is ordered by decreasing quality: inkscape --export-area-page --export-eps=out.eps in.pdf using the graphical program Inkscape works best, but is a bit slow; pdftops -eps in.pdf out.eps uses Poppler and works good and is fast; pdf2ps in.pdf out.eps uses ghostscript and works ok for simple documents; convert in.pdf out.eps uses ImageMagick and always rasterizes the image. I haven't tested the following: acroread -toPostScript use acroread (Linux only) Some issues I've found: Transparency is not supported in EPS, but instead of flattening the layers, most programs rasterize the image producing big files and ugly graphs. Inkscape does this best by only rasterizing the unsupported area. Gradients are rendered properly by Inkscape, but Poppler somehow chops up the gradient into many shapes of different colors. Greek symbols are seemingly not supported by Ghostscript and are rasterized (using pdf2ps). What are your experiences for this kind of task? Did I forgot certain programs and/or command line options that improve quality? I found some posts on this, but not a (thorough) comparison of possibilities, please correct me if I'm wrong. Related posts How to convert PDF to EPS? on TeX

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  • Copying email with qmail and Plesk

    - by Greg
    I need to keep a copy of all outgoing and incoming email (for a single domain if possible) using qmail or Plesk. I can't recompile qmail, so qmailtap is out of the question, as is setting QUEUE_EXTRA in extra.h. I'm pretty sure it should be possible with Plesk's mailmng utility, aka Mail Handlers but I'm having trouble getting them to work. I've registered 2 hooks: incoming hook ./mailmng --add-handler --handler-name=incoming --recipient-domain=example.com --executable=/xxx/incoming.sh --context=/xxx/incoming/ --hook=before-local incoming.sh #!/bin/bash # The email is passed on stdin - grab it to a variable e=`cat -` # $1 = context (/xxx/incoming) # $3 = recipient ([email protected]) # Create /xxx/incoming/[email protected] mkdir -p $1$3 # Save the email to /xxx/incoming/[email protected]/0123456789.txt echo "$e" > $1$3/`date +%s%N`.txt # Echo PASS to stderr echo 'PASS' >&2 # Echo the email to stdout echo "$e" outgoing hook # ./mailmng --add-handler --handler-name=outgoing --sender-domain=holidaysplease.com --executable=/xxx/outgoing.sh --context=/xxx/outgoing/ --hook=before-remote The outgoing.sh file is the same as incoming.sh, except replace $3 (recipient) with $2 (sender). The incoming hook does work, but saves 2 copies of each email - one before and one after SpamAssassin has run. The outgoing hook doesn't seem to get called at all. So finally, my questions are: How can I make the incoming hook save only a single copy (preferably after SpamAssassin has run)? How can I get the outgoing hook to work?

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  • Windows Server 2003 DC hangs after network drivers update

    - by tcv
    Earlier today, we attempted to update the Broadcom BCM5716C network drivers on a Windows Server 2003. (Dell PowerEdge T310, FWIW). Since then we have not been able to boot the server in any normal mode. Safe Mode works. Safe Mode with Networking and regular bootups hang at "Applying Network Settings." I haven't tried Last Known Good Configuration nor have I tried Directory Services Restore Mode. I should also mention that the longest I've allowed "Applying Network Settings" was perhaps 30 minutes. I spoke to Dell since the server is under a basic warranty. They sent me the original Broadcom drivers. The trouble seems to be, however, that since I can only boot in Safe Mode, I can't install the application package as given. In safe mode, I receive the error: "The system administrator has set policies to prohibit this installation." I can install the drivers independently, but that doesn't allow the NICs to work. The most I've been able to get are Code 10 errors on each NIC. I plan to get back to the site tomorrow to attempt installation of a different NIC. I'm wondering what else I can try.

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  • CentOS networking BNX2

    - by james moore
    Having some trouble with my NICs. The server starts fine and I can wget/ping etc. However, when I /etc/init.d/networking restart I then receive the following error: Bringing up interface eth0: bnx2: fw sync timeout, reset code = 1030009 SIOCSIFFLAGS: Device or resource busy Consequently, the task fails. I have searched around on google users suggesting to disable PNP in the BIOS but I see no option. Here is some system information: $ ethtool -i eth0 driver: bnx2 version: 2.0.8-rh firmware-version: bc 2.9.1 $ uname -a Linux host 2.6.18-238.9.1.el5 #1 SMP Tue Apr 12 18:10:13 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux $/sbin/lspci | grep Broadcom 04:00.0 PCI brodge: Broadcom EPB PCI-Express to PCI-X Bridge (rev c3) 05:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5700 Gigabit Ethernet (rev 12) 08:00.0 PCI brodge: Broadcom EPB PCI-Express to PCI-X Bridge (rev c3) 09:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5700 Gigabit Ethernet (rev 12) $ lsmod | grep bnx2 bnx2i 81704 0 cnic 109512 1 bnx2i libiscsi2 77765 6 be2iscsi,ib_iser,iscsi_tcp,bnx2i,cxgb3i,libiscsi_tcp scsi_transport_iscsi2 73945 8 be2iscsi,ib_iser,iscsi_tcp,bnx2i,cxgb3i,libiscsi2 bnx2 224780 0 scsi_mod 199001 15 mpt2sas,scsi_transport_sas,mptctl,be2iscsi,ib_iser,iscsi_tcp,bnx2i,cxgb3i,libiscsi2,scsi_transport_iscsi2,scsi_dh,sg,libata,megaraid_sas,sd_mod $ rmmod bnx2; modprobe bnx2 PCI: Enabling device 0000:05:00.0 (0158 -> 015a) PCI: Enabling device 0000:09:00.0 (0158 -> 015a) bnx2: fw sync timeout, reset code = 10300003 Any help would be appreciated as I am at a loss.

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  • Why should one have a secondary DNS server?

    - by Sam Levin
    I'm very confused. I basically understand how DNS works. Here's an example that helps illustrate what I'm having trouble understanding. Right now, I run a small web-server. I use my provider's DNS manager, so I don't have a DNS server hosted on the machine. Let's say for a second, that I don't use my host's DNS, and I decide to set up a DNS server on my server. Hypothetical scenario: my server (entire) server goes down - DNS included. Why do I need backup DNS? If the server is down, who cares if the DNS server is down too, considering that even if I had DNS up (it wasn't on the crashed server), it wouldn't be able to forward requests anyway since the server would be down? Is the point of having secondary DNS, to be able to change the IP addresses that your DNS server points to, so if your webserver was down, you could redirect traffic to a backup? How would you switch to the secondary provider, in the event that your main DNS provider becomes unavailable? Is a backup DNS system basically up all the time? How is it configured? Is it just an exact clone of the DNS server you would have on your server? Do they run simultaneously? Hopefully someone can see what I'm hung up on, and provide some guidance. Thanks

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  • /usr/bin/python (Python 2.4) was deleted on CentOS 5. I compiled from source but yum is still broken. How can I get everything back to the way it was?

    - by Maxwell
    I saw a lot of other questions like this but none of them answered the exact part I am having trouble with (actually installing the Python RPM). Someone on my system deleted /usr/bin/python and /usr/bin/python2.4 on my 64 bit CentOS 5.8 installation. I recompiled Python 2.4 from source, but now whenever I try to yum install anything I get the following error: [root@cerulean-OW1 ~]# yum install httpd There was a problem importing one of the Python modules required to run yum. The error leading to this problem was: No module named yum Please install a package which provides this module, or verify that the module is installed correctly. It's possible that the above module doesn't match the current version of Python, which is: 2.4 (#1, Dec 16 2012, 09:16:56) [GCC 4.1.2 20080704 (Red Hat 4.1.2-52)] If you cannot solve this problem yourself, please go to the yum faq at: http://wiki.linux.duke.edu/YumFaq I checked http://wiki.linux.duke.edu/YumFaq and it said the following: If you are getting a message that yum itself is the missing module then you probably installed it incorreclty (or installed the source rpm using make/make install). If possible, find a prebuilt rpm that will work for your system like one from Fedora or CentOS. Or, you can download the srpm and do a rpmbuild --rebuild yum*.src.rpm I tried going to http://rpm.pbone.net/index.php3/stat/4/idpl/17838875/dir/centos_5/com/python-2.4.3-46.el5.x86_64.rpm.html to install Python, which resulted in the following error: [root@cerulean-OW1 ~]# rpm -Uvh python-2.4.3-46.el5.x86_64.rpm error: Failed dependencies: python-libs-x86_64 = 2.4.3-46.el5 is needed by python-2.4.3-46.el5.x86_64 So I tried installing python-libs-x86_64, which resulted in the following: [root@cerulean-OW1 ~]# rpm -Uvh python-libs-2.4.3-46.el5_8.2.x86_64.rpm warning: python-libs-2.4.3-46.el5_8.2.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID 192a7d7d Preparing... ########################################### [100%] package python-libs-2.4.3-46.el5_8.2.x86_64 is already installed file /usr/lib64/libpython2.4.so.1.0 from install of python-libs-2.4.3-46.el5_8.2.x86_64 conflicts with file from package python-libs-2.4.3-46.el5_8.2.x86_64

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  • Single application through OpenVPN tunnel (Debian Lenny)

    - by mikael
    I'm using Debian Lenny and I want to tunnel rtorrent only through a OpenVPN tunnel. I have a tunnel running, the config file looks like this: client dev tun proto udp remote openvpn.xxx.com 1194 resolv-retry infinite nobind persist-key persist-tun ca /etc/openvpn/xxx/keys/ca.crt cert /etc/openvpn/xxx/keys/client.crt key /etc/openvpn/xxx/keys/client.key tls-auth /etc/openvpn/xxx/keys/tls.key 1 ns-cert-type server comp-lzo verb 3 auth-user-pass script-security 3 reneg-sec 0 My idea is that I could run a sockd proxy internally that redirects traffic to the openvpn tunnel. I could use the *nix "proxifier" application "tsocks" to make it possible for rtorrent to connect through that proxy (as rtorrent doesn't support proxies). I have trouble configuring sockd as my IP inside the VPN changes every time I connect. This is a config file someone said would help: http://ircpimps.org/sockd.conf As my IP changes at each connect I don't know what to put in that config file. I have no control over the host side config file. Any help wanted. Any other method is very welcome.

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  • IIS 7.0 404 Custom Error Page and web.config

    - by Colin
    I am having trouble with a custom 404 error page. I have a domain running a .NET proj with it's own error handling. I have a web.config running for the domain which contains: <customErrors mode="RemoteOnly"> <error statusCode="500" redirect="/Error"/> <error statusCode="404" redirect="/404"/> </customErrors> On a sub dir of that domain I am ignoring all routes there by doing routes.IgnoreRoute("Assets/{*pathInfo}"); in the .NET proj and I want to put a custom 404 error page on that and any sub dir's of Assets. The sub dir contains static content like images, css, js etc etc. So in the Error Pages section of IIS I put a redirect to an absolute URL. The web.config for that dir looks like the following: <system.webServer> <httpErrors> <remove statusCode="404" subStatusCode="-1" /> <error statusCode="404" prefixLanguageFilePath="" path="http://mydomain.com/404" responseMode="Redirect" /> </httpErrors> </system.webServer> But I navigate to an unknown URL under that dir and yet I still see the default IIS 404 page. I am also seeing an alert in IIS that reads: You have configured detailed error messages to be returned for both local and remote requests. When this option is selected, custom error configuration is not used. Does this have anything to do with the customErrors mode="RemoteOnly" in the site web.config? I have tried to overwrite the customErrors in the sub dir web.config but nothing changes. Any help would be appreciated. Thanks.

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  • Multiple Internet connections, multiple networks and split access in Linux

    - by Swapneel Patnekar
    I am having trouble setting up multiple internet connections for split access in Linux. We have 3 internet connections from 3 different ISP's. We want to configure our Linux gateway machine such that our three internal networks 10.2.1.0/24, 192.168.20.0/24 & 192.168.2.0/24 use ISP1, ISP2 and ISP3 respectively in a split access manner. Outlined below is the layout/settings, Interfaces of the Linux Gateway connected to Routers: eth0: 10.1.1.2<---------->10.1.1.1(Internal Interface of ADSL Router)[ISP1] eth1: 192.168.15.2<------>192.168.15.1(Internal Interface of 3G Router)[ISP2] eth3: 192.168.1.2<------->192.168.1.1(Internal Interface of ADSL Router)[ISP3] Kindly note that none of the interfaces in the Linux gateway has a public static IP address. Routers of ISP1 and ISP2 get assigned a dynamic public IP address when connected to the Internet, router of ISP3 has been assigned a public static IP address. Interface of Linux gateway connected to a switch, eth4: 10.2.1.1(LAN Interface for ISP1) eth4:0 192.168.20.1(LAN interface for ISP2) eth4:1 192.168.2.1(LAN Interface for ISP3) eth4:0 & eth4:1 are virtual interfaces with eth4 being the interface connected physically. Based on http://linux-ip.net/html/adv-multi-internet.html I've set the following routes, ip route flush table 4 ip route show table main | grep -Ev ^default | while read ROUTE ; do ip route add table 4 $ROUTE done ip route add table 4 default via 192.168.15.1 ip rule add fwmark 4 table 4 ip route flush cache Additionally, using the following iptables rules to mark & route packets as per the guide mentioned above : http://pastebin.com/KzWHFGJA At this point, computers from 192.168.2.0/24 network are successfully able to reach the Internet through ISP3. 192.168.20.0/24 and 10.2.1.0/24 are unable to access the Internet through ISP1 and ISP2 respectively. Any inputs will be much appreciated !

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  • Asterisk, IAXModem & Hylafax how-tos?

    - by Brian Postow
    I'm trying to set up Asterisk and IAXModem to send faxes via T38 (Yes, I know I'm swatting a fly with a Buick...) However, since I'm trying to do something so small with a product so large, I'm having trouble finding samples or how-tos that show me how to set this up. I've got all three installed, and I THINK I have my IAXModem config correct. I'm pretty sure that I have Hylafax correct (I've used it with T38Modem) so, I need to know which of the Asterisk samples I need to use, and how to use them. I think I want to use some combination of iax.conf, iaxprov.conf, sip.conf and sip_notify.conf. But I'm not sure where to put them, or what to change... I'm sure that the answer is RTFM, but I'm not sure WHICH M, or where in it to R... thanks. EDIT On a mailing list, someone told me that this actually WON'T WORK because IAX doesn't do T38. So, is there some other way to get Asterisk to work with Hylafax and send T38? I know that Asterisk does T38, the question is how to get the data from Hylafax and back...

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