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• Compiled git from source, cannot access subversion repositories using git-svn

  - by haydenmuhl

  I'm setting up a CentOS dev box, and need git. At first I tried to install git using yum, but I could not connect to a yum repository that had git. Next I downloaded the git source (version 1.7.1) and compiled it. When I run the following command git svn clone svn+ssh://... I get the following error. Initialized empty Git repository in /root/main_ec/.git/ Can't locate SVN/Core.pm in @INC (@INC contains: /usr/local/lib/perl5/site_perl/5.8.8/i386-linux-thread-multi /usr/local/lib/perl5/site_perl/5.8.8 /usr/lib/perl5/site_perl/5.8.8/i386-linux-thread-multi /usr/lib/perl5/site_perl/5.8.8 /usr/lib/perl5/site_perl /usr/lib/perl5/vendor_perl/5.8.8/i386-linux-thread-multi /usr/lib/perl5/vendor_perl/5.8.8 /usr/lib/perl5/vendor_perl /usr/lib/perl5/5.8.8/i386-linux-thread-multi /usr/lib/perl5/5.8.8 .) at /usr/local/libexec/git-core/git-svn line 41. It looks like git-svn uses perl in some manner, but I don't know packages I'm missing. Can anyone help?

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• With no password expire notification at logon in Windows 7, how are you configuring password expire

  - by J. L.

  To my understanding, Windows 7 users do not receive password expiration notification during the logon process - it occurs strictly from the system tray. We currently have tray balloon notifications disabled to lessen user distraction, and I expect the password change process is a smoother one during the logon process rather than in an existing session. As a result, users will get prompted to change their passwords at expiration. The users also connect to Terminal Services boxes, but receive the advanced notification for password expiration there. So, Windows 7 is not notifying, but TS/RDS and XP boxes are. Any guidance on configuring this? Personally, I would turn off all expiration notices, but I understand most users would prefer to see the notification. Thoughts? Any GPO or other settings I might be overlooking? The interactive logon setting below is already enabled for our Win7 workstation GPO. My thought is balloon notifications will get turned back on for Windows 7, but I wanted to see if anyone was aware of alternatives. Thanks. Computer Configuration\Windows Settings\Security Settings\Local Policies - Security Options Interactive logon: Prompt user to change password before expiration

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• Using mod_rewrite to mask /cgi-bin/abc as /def

  - by Alois Mahdal

  I have a seemingly easy task, but somehow I just can't get it to work: Some interesting lines from my httpd.conf: ... DocumentRoot "D:/opt/apache/htdocs" ... ScriptAlias /cgi-bin/ "D:/opt/apache/cgi-bin/" ... <Directory "D:/opt/apache/htdocs"> Options Indexes FollowSymLinks ExecCGI AllowOverride None Order allow,deny Allow from all </Directory> <Directory "D:/opt/apache/cgi-bin/"> AllowOverride None Options ExecCGI Order allow,deny Allow from all </Directory> (I know it's dumb but it's only a testing machine :D.) Now, I have d:\opt\apache\cgi-bin\expired.pl and I expect GET /licensecheck.php?code=123456. And I wish to fake client into thinking it speaks with /licensecheck.php, but actually return data by \expired.pl. What I tried was setting following at the end of http.conf: RewriteEngine on RewriteRule ^/licensecheck.php$ /cgi-bin/expired.pl [T=application/x-httpd-cgi,L] ...but it keeps 404-ing me, looking for cgi-bin directory (not cgi-bin\expired.pl) in my DocumentRoot! [error] [client 127.0.0.1] script not found or unable to stat: D:/opt/apache/htdocs/cgi-bin /cgi-bin/expired.pl and all other scripts in /cgi-bin/ work as expected, Only way I could make it work was actually putting the \expired.pl to DocumentRoot, but I don't want this, I want my cgi-bin neatly separated :)

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• How to set CA cert file for LDAP backend server in smbpasswd configuration

  - by hayalci

  I am having a problem with smbpasswd, an LDAP backend server and SSL/TLS certificates. The client machine that I run smbpasswd on is a Debian Etch machine, and the Ldap server is Sun DS running on Solaris. All the following occurs on the client. When I disable SSL, by setting "ldap ssl = no" in smb.conf, the smbpasswd program works without errors. When I set "ldap ssl = start tls", the following messages are printed by smbpasswd and there is a long timeout period before any password is asked by it Failed to issue the StartTLS instruction: Connect error Connection to LDAP server failed for the 1 try! ..... long delay ..... New SMB password: Retype new SMB password: Failed to issue the StartTLS instruction: Connect error Connection to LDAP server failed for the 1 try! smbpasswd: /tmp/buildd/openldap2-2.1.30/libraries/liblber/io.c:702: ber_get_next: Assertion `0' failed. Aborted I conducted some tests with "ldapsearch -ZZ". It was not working at first, but after I added the TLS_CACERT line to /etc/ldap/ldap.conf, /etc/libnss-ldap.conf and /etc/pam_ldap.conf, it started working. So relevant TLS sections in all those files are: ssl start_tls tls_checkpeer no tls_cacertfile /path/to/ca-root.pem TLS_CACERT /path/to/ca-root.pem But the smbpasswd program continued giving the error. I tried creating /etc/smbldap-tools/smbldap.conf file with following content (after consulting debian docs for smbldap-tools package) But as I see, smbpasswd comes with samba-common package and does not use the configuration for smbldap-tools utilities. verify="optional" cafile="/path/to/ca-root.pem" My question is: How can I set which SSL CA Certificate is used by smbpasswd program ?

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• Migrating to CF9: trouble getting JRun working with SSL

  - by DaveBurns

  I have a client on MX7 who wants to migrate to CF9. I have a dev environment for them on my WinXP machine where I've configured MX7 to run with JRun's built-in web server. I've had that working for a long time with both regular and SSL connections. I installed CF9 yesterday side-by-side with the existing MX7 install to start testing. The install was smooth and detected MX7, adjusted CF9's port numbers for no conflict, etc. Testing started well: MX7 over regular and SSL still worked and CF9 worked over regular HTTP. But I can't get CF9 to work with SSL. I installed a new certificate with keytool, FireFox (v3.6) complained about it being unsigned, I added it to the exception list, and now I get this: Secure Connection Failed An error occurred during a connection to localhost:9101. Peer reports it experienced an internal error. (Error code: ssl_error_internal_error_alert) I've been Googling that in all variations but can't find much help to get past this. I don't see any info in any log files either. FWIW, here's my SSL config from SERVER-INF/jrun.xml: <service class="jrun.servlet.http.SSLService" name="SSLService"> <attribute name="enabled">true</attribute>` <attribute name="interface">*</attribute> <attribute name="port">9101</attribute> <attribute name="keyStore">{jrun.rootdir}/lib/mykey</attribute> <attribute name="keyStorePassword">*deleted*</attribute> <attribute name="trustStore">{jrun.rootdir}/lib/trustStore</attribute> <attribute name="socketFactoryName">jrun.servlet.http.JRunSSLServerSocketFactory</attribute> <attribute name="deactivated">false</attribute> <attribute name="bindAddress">*</attribute> <attribute name="clientAuth">false</attribute> </service> Anyone here know of any issues re setting up SSL and CF9? Anyone had success with it? Dave

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• How to make ssh connection between servers using public-key authentication

  - by Rafael

  I am setting up a continuos integration(CI) server and a test web server. I would like that CI server would access web server with public key authentication. In the web server I have created an user and generated the keys sudo useradd -d /var/www/user -m user sudo passwd user sudo su user ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/var/www/user/.ssh/id_rsa): Created directory '/var/www/user/.ssh'. Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /var/www/user/.ssh/id_rsa. Your public key has been saved in /var/www/user/.ssh/id_rsa.pub. However othe side, CI server copies the key to the host but still asks password ssh-copy-id -i ~/.ssh/id_rsa.pub user@webserver-address user@webserver-address's password: Now try logging into the machine, with "ssh 'user@webserver-address'", and check in: .ssh/authorized_keys to make sure we haven't added extra keys that you weren't expecting. I checked on the web server and the CI server public key has been copied to web server authorized_keys but when I connect, It asks password. ssh 'user@webserver-address' user@webserver-address's password: If I try use root user rather than my created user (both users are with copied public keys). It connects with the public key ssh 'root@webserver-address' Welcome to Ubuntu 11.04 (GNU/Linux 2.6.18-274.7.1.el5.028stab095.1 x86_64) * Documentation: https://help.ubuntu.com/ Last login: Wed Apr 11 10:21:13 2012 from ******* root@webserver-address:~#

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• Can anyone explain these differences between two similar i7 processors? [closed]

  - by Brian Frost

  I have two systems I've just built. They both have i7 processors and Asus P8Z77 motherboards. When I run a simple processor loop benchmark that I wrote in Delphi some time back I get one machine showing nealry twice as fast as the other. I then used CPU-Z to dump me the details of the hardware and I see that the fast machine shows: Processor 1 ID = 0 Number of cores 4 (max 8) Number of threads 8 (max 16) Name Intel Core i7 2700K Codename Sandy Bridge Specification Intel(R) Core(TM) i7-2700K CPU @ 3.50GHz Package (platform ID) Socket 1155 LGA (0x1) CPUID 6.A.7 Extended CPUID 6.2A Core Stepping D2 Technology 32 nm TDP Limit 95 Watts Core Speed 3610.7 MHz Multiplier x FSB 36.0 x 100.3 MHz Stock frequency 3500 MHz the slow machine shows: Processor 1 ID = 0 Number of cores 4 (max 8) Number of threads 8 (max 16) Name Intel Core i7 2600K Codename Sandy Bridge Specification Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz Package (platform ID) Socket 1155 LGA (0x1) CPUID 6.A.7 Extended CPUID 6.2A Core Stepping D2 Technology 32 nm TDP Limit 95 Watts Core Speed 1648.2 MHz Multiplier x FSB 16.0 x 103.0 MHz Stock frequency 3400 MHz i.e the slow machine has a 2600k to the fast machine 2700k. The very different "Multiplier x FSB" must be significant but I dont understand how two processors with a very 'similar' number can be so different. To get the machines the same must I copy the processors or is there some clever setting that I can change? Thanks for any help. Brian.

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• Workstations cannot see new MS Server 2008 domain, but can access DHCP. (solved)

  - by Radix

  The XP Pro workstations do not see the new replacement domain upon boot; they only see their cached entry for the old (server 2003) domain controller. The old_server is not connected to the network. I have DHCP working with the same scope as the old_server. In my "before-asking" search for a solution I came across the following two articles, and I recall doing things as suggested by the articles. http://www.windowsreference.com/windows-server-2008/how-to-setup-dhcp-server-in-windows-server-2008-step-by-step-guide/ http://www.windowsreference.com/windows-server-2008/step-by-step-guide-for-windows-server-2008-domain-controller-and-dns-server-setup/ The only possible issue is: I was under the impression that the domain netbios needed to match the DC's netbios. The DC netbios is city01 while the domain's FQDN is city.domain.org (I think this is mistaken and should have been just domain.org) But, the second link led me to a post which I believe answers my question. I did as they instructed by opening Local Area Connection Properties, then selecting TCP/IPv4 and setting the sole preferred DNS server to the local hosts static IP (10.10.1.1). Search for "Your problems should clear up" for the post I'm referencing: http://forums.techarena.in/active-directory/1032797.htm Have I misunderstood their instructions? I am hoping to reach the point where I can define users and user groups. Also, does TechNet have a single theoretical overview document I could read. I really don't like treating comps as magic. I will be watching this closely and will quickly answer any questions. If I've left anything out it is because I did not know it was needed. PS: I am loath to ask obviously basic questions, but I am tired and wish to fix this before tomorrow. Also, this is my first server installation, thank you for your help.

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• Measure Total Bandwidth for Billing

  - by TonyZ

  I am setting up a new network which customers will host their applications on. It needs to be able to scale out to a few hundred servers and each server will have several VMs on it. Right now in my test environment, after the telco router, we are using a Linux router/firewall which is then connected to a Layer 2 switch. Could be a layer 3 in the future. I need to track total bandwidth per VM for each machine, and I need to do it in a way that it is not part of the VM. Each VM will have a private class ip address which is Natted by the gateway, or we may eventually run more than firewall/reverse proxy off a layer 3 switch. So my thinking is that I can do it off of a promiscuous port on the switches, or at the gateway firewall. I would like to have an out of the box solution, preferably open source. Does anyone have suggestions on the easiest way to set this up, and the easiest tool to use. I have looked at the web sites for Nagios, Zenoss, Zabbix, ntops on the firewall, etc. It is hard to ascertain just from the web sites if they do exactly this or not. Obviously, performance is also somewhat key here. Anything running on the gateway should not drag it down doing traffic accounting. Thanks for any thoughts. Tony Zakula

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• CentOs 6.3 can't install Git

  - by drivard

  I am trying to install git on an OpenVZ container using the CentOs 6.3 precreated template. When I try the command line yum install git I get the message: Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: www.cubiculestudio.com * epel: mirror.csclub.uwaterloo.ca * extras: www.cubiculestudio.com * rpmforge: mirror.us.leaseweb.net * updates: www.cubiculestudio.com Setting up Install Process No package git available. Error: Nothing to do As I understand, the git package should be in the centos6 base repository: http://pkgs.org/centos-6-rhel-6/centos-rhel-x86_64/git-1.7.1-2.el6_0.1.x86_64.rpm.html But it doesn't find it, I even have the EPEL and RPMForge repo enabled, but still can't find the git package. yum repolist Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: www.cubiculestudio.com * epel: mirror.csclub.uwaterloo.ca * extras: www.cubiculestudio.com * rpmforge: mirror.us.leaseweb.net * updates: www.cubiculestudio.com repo id repo name status base CentOS-6 - Base 4,776 epel Extra Packages for Enterprise Linux 6 - i386 6,523 extras CentOS-6 - Extras 4 rpmforge RHEL 6 - RPMforge.net - dag 4,501 updates CentOS-6 - Updates 596 vz-base vz-base 3 vz-updates vz-updates 0 repolist: 16,403 The weirdest thing is that my OpenVZ server is running on CentOs 6.3 and I was able to install git without any issue. Can you help me understanding why it doesn't find the package? Thank you in advance.

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• How to email photo from Ubuntu F-Spot application via Gmail?

  - by Norman Ramsey

  My father runs Ubuntu and wants to be able to use the Gnome photo manager, F-Spot, to email photos. However, he must use Gmail as his client because (a) it's the only client he knows how to use and (b) his ISP refuses to reveal his SMTP password. I've got as far as setting up Firefox to use GMail to handle mailto: links and I've also configured firefox as the system default mailer using gnome-default-applications-properties. F-Spot presents a mailto: URL with an attach=file:///tmp/mumble.jpg header. So here's the problem: the attachment never shows up. I can't tell if Firefox is dropping the attachment header, if GMail doesn't support the header, or what. I've learned that: There's no official header in the mailto: URL RFC that explains how to add an attachment. I can't find documentation on how Firefox handles mailto: URLs that would explain to me how to communicate to Firefox that I want an attachment. I can't find any documentation for GMail's URL API that would enable me to tell GMail directly to start composing a message with a given file as an attachement. I'm perfectly capable of writing a shell script to interpolate around F-Spot to massage the URL that F-Spot presents into something that will coax Firefox into doing the right thing. But I can't figure out how to persuade Firefox to start composing a GMail message with a local file attached. Any help would be greatly appreciated.

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• Vanishing Windows Desktop Shortcut Keys

  - by Henry Keiter

  The Situation Like you, I have many applications that I like to open. I've set up keyboard shortcuts for the most common, by placing a link on the desktop and setting its Shortcut Key property: This is all fine and dandy, most of the time. When I want to bring up the GIMP, I press Ctrl+Alt+G and the GIMP launches. Lovely. The Problem Sometimes--perhaps once a month per desktop shortcut--the shortcut key assignment simply vanishes. I press Ctrl+Alt+G and nothing happens, so I go check the shortcut and see that lo and behold: nothing is there. This happens regularly to all my shortcuts (not all at once). It doesn't matter what keys I assign, and there doesn't seem to be any correlation with particular applications being open or anything of that sort. This has happened on every Windows XP machine I've ever used with any regularity. Obviously what makes this issue particularly obnoxious is that it's not easily reproducible. I have searched long and hard for a solution for (or at least acknowledgement of) this problem, to no avail, so hopefully you guys know something that I don't. I did find this question, where the answers are all basically "use a third-party app", but as far as I could tell that was a slightly different issue, related to Explorer being busy. If the solution for this turns out to be the same, fine, but I'd prefer a native fix if at all possible. Note: I've tagged this with Windows in general because I seem to remember it happening on Windows 7 as well as XP, but I rarely notice it because I use the start-menu search in preference to desktop shortcuts.

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• Office 2007 constantly crashes, logged as Event ID 1000

  - by Nori

  I have a user, who despite my best efforts, is having constant Office 2007 crashes. I've tried deleting their profile and setting it up again, repairing office, uninstalling completely and then reinstalling, and swapping out memory sticks. One event log error I keep getting is the following: (note all the Office errors are event id 1000) Faulting application name: OUTLOOK.EXE, version: 12.0.6539.5000, time stamp: 0x4c12486d Faulting module name: EMSMDB32.DLL, version: 12.0.6539.5000, time stamp: 0x4c1246f8 Exception code: 0xc0000005 Fault offset: 0x0005d8e2 Faulting process id: 0xf6c Faulting application start time: 0x01cb6633f33384f3 Faulting application path: C:\Program Files (x86)\Microsoft Office\Office12\OUTLOOK.EXE Faulting module path: c:\progra~2\micros~1\office12\EMSMDB32.DLL Report Id: 0d4a2eab-d231-11df-80a0-4061868f5d10 I also get this: Faulting application name: OUTLOOK.EXE, version: 12.0.6539.5000, time stamp: 0x4c12486d Faulting module name: olmapi32.dll, version: 12.0.6538.5000, time stamp: 0x4bfc6ad9 Exception code: 0xc0000005 Fault offset: 0x002357a9 Faulting process id: 0x5e4 Faulting application start time: 0x01cb661f4546aa77 Faulting application path: C:\Program Files (x86)\Microsoft Office\Office12\OUTLOOK.EXE Faulting module path: c:\progra~2\micros~1\office12\olmapi32.dll Report Id: a4a90658-d224-11df-80a0-4061868f5d10 The Excel error is this: Faulting application name: EXCEL.EXE, version: 12.0.6535.5002, time stamp: 0x4bd2a7f1 Faulting module name: KERNELBASE.dll, version: 6.1.7600.16385, time stamp: 0x4a5bdbdf Exception code: 0xe06d7363 Fault offset: 0x0000b727 Faulting process id: 0x14a8 Faulting application start time: 0x01cb61ab7bc0abab Faulting application path: C:\Program Files (x86)\Microsoft Office\Office12\EXCEL.EXE Faulting module path: C:\Windows\syswow64\KERNELBASE.dll Report Id: ba0c454b-cd9e-11df-80a0-4061868f5d10 Also have gotten this for PowerPoint: Faulting application name: POWERPNT.EXE, version: 12.0.6500.5000, time stamp: 0x49a68f9d Faulting module name: COMShim.dll, version: 2010.3.325.110, time stamp: 0x4c51e0b1 Exception code: 0x40000015 Fault offset: 0x0001e388 Faulting process id: 0x1480 Faulting application start time: 0x01cb5fe9a0660e81 Faulting application path: C:\Program Files (x86)\Microsoft Office\Office12\POWERPNT.EXE Faulting module path: C:\Program Files (x86)\FactSet\COMShim.dll Report Id: e03d2a21-cbdc-11df-9bc8-4061868f5d10 (Some of the above lines edited to keep you from scroll horizontally.) Lastly, I get this error several times a day, I don't think it is related but maybe it is: Failed extract of third-party root list from auto update cab at: http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab with error: A required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file. Any ideas? This is driving me nuts.

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• How to access Windows Server 2008 R2 file shares from a different subnet

  - by Lloyd Cotten

  We have a couple of severs that used to be Windows Server 2003 that we recently upgraded to Windows Server 2008 R2. A couple of details to set the situation up: We wiped the OS and re-installed. These servers are on one subnet (172.16.x.x) and we are trying to access some file shares on them from another subnet (10.34.x.x). Firewall is disabled on these servers. Trying to access with UNC "\172.16.x.x\sharename" and net use \172.16.x.x However, we're having problems doing this. We are getting "The network path was not found". Here's some of the things we've tried so far and the result: Tried accessing the share from other (non-2008) servers on the same subnet... Success! Ping servers from different subnet... Success! Telnet connection into port 139 from different subnet... Success! Took a scan through Local Security Policies to see if something obvious needed to be enabled / disabled / configured... Fail I'm not sure where to look next. I know that the router between the two subnets is locked down pretty good, but this did work for our 2003 servers. Has anything changed in the way of ports used for UNC / file share access in 2008? Maybe I'm missing some security policy setting? Hoping somebody can take pity on a poor programming guy that can't figure out something really simple. :-) Thanks!

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• SATA Windows 7 Problems

  - by Isaacs

  Scenario: Core 2 Duo processor, Gigabyte MB, 4 SATA Western digital 500 GB hard drives, windows 7 64 bit. Problem: Copying data from USB or among SATA hard drives is faulty. When trying to copy 20GB from one HD to another it starts off with normal ~14-15 MB/s transfer rates and eventually bogs down to < 120KB/s transfer rates. If I leave it alone over night I come back with my computer crashed and setting at BIOS detecting hard drives. Troubleshooting: Removed all but 1 HD with OS on it, everything seems to be happy. I can copy large files from USB HD to main/single HD. Ran SpinRite on all hard drives, no errors found. Tried adding one HD to machine and problem exists, tried switching SATA cables, and SATA ports on MB. Reinstalled windows 7 x2 (from different disks..). Oddly enough if I boot to a ubuntu everything works fine. Getting ready to purchase a new MB, but wanted to see if anyone had suggestions. Thanks!

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• SQL Server 2008 Cluster Installation - First network name always fails

  - by boflynn

  I'm testing failover clustering in Windows Server 2008 to host a SQL Server 2008 installation using this installation guide. My base cluster is installed and working properly, as well as clustering the DTC service. However, when it comes time to install SQL Server, my first attempt at installation always fails with the same message and seems to "taint" the network name. For example, with my previous cluster attempt, I was installing SQL Server as VSQL. After approximately 15 attempts of installation and trying to resolve the errors, e.g. changing domain accounts for SQL, setting SPNs, etc., I typoed the network name as VQSL and the installation worked. Similarly on my current cluster, I tried installing with the SQL service named PROD-C1-DB and got the same errors as last time until I tried changing the name to anything else, e.g. PROD-C1-DB1, SQL, TEST, etc., at which point the install works. It will even install to VSQL now. While testing, my install routine was: Run setup.exe from patched media, selecting appropriate options After the install fails, I'd chose "Remove node from a SQL Server failover cluster" and remove the single, failed, node Attempt to diagnose problem, inspect event logs, etc. Delete the computer account that was created for the SQL Service from Active Directory Delete the MSSQL10.MSSQLSERVER folder from the shared data drive The error message I receive from the SQL Server installer is: The following error has occurred: The cluster resource 'SQL Server' could not be brought online. Error: The group or resource is not in the correct state to perform the requested operation. (Exception from HRESULT: 0x8007139F) Along with hundreds of the following errors in the Application event log: [sqsrvres] checkODBCConnectError: sqlstate = 28000; native error = 4818; message = [Microsoft][SQL Server Native Client 10.0][SQL Server]Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'. System configuration notes: Windows Server 2008 Enterprise Edition x64 SQL Server 2008 Enterprise Edition x64 using slipstreamed SP1+CU1 media Dell PowerEdge servers Fibre attached storage

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• Ubuntu questions - important

  - by asdasd

  They had installed some modified edubuntu's at school... So i have some questions about setting some things up: How we can play HD videos ? They are made for windows machines and are in .wmv format but we need to play them on our multimedia class but don't know how - which player, which codecs etc. How to edit properly the /etc/apt/sources file ? Anything we try to install via apt-get it just says that E:\ is not available. Please tell me which repositories to put in there so we could be able to install some tools. Where are usually viruses/trojans put in ubuntu ? I mean in which directories ? Because our computers are behaving really slow and we need to check for some malware manually - we are not even allowed to install any kind of AV software. So tell me the usual directories and places for hiding such files, how are they hiddem, how to recognize them etc. Any others nice tricks/tips that we need to know. Thank you very much in advance.

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• Prevent Exchange Server from advertising itself on domain

  - by Justin Shin

  I'm in the middle of setting up an Exchange 2010 Server. Currently, we use a SaaS provider for Exchange 2007 services. Some (but not all) of my users have been reporting that they are receiving Outlook/Exchange login prompts to login to the new Exchange server. This is happening without any intervention on the client's machines. The Exchange server is a member of the domain and connects to the domain site remotely through a site-to-site VPN. What can I do to prevent these login prompts from appearing? Will shutting down the new server until it is time to switch resolve these issues? A little more info: I found that on one of the client computers, all of the settings for Outlook over HTTP had been changed (automatically) from webmail.provider.com to mail.company.com (the latter being the new server). This happened when I enabled Outlook Anywhere access on Exchange 2010. I changed the client's settings back, and everything was groovy. But, when I disabled Outlook Anywhere again, the logon prompt came back.

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• (Zywall USG 300) NAT bypassed when accessing in-house-server From LAN Via domain name

  - by mschr

  My situations is like this; i host a number of websites from within our joint network solution. On the network is basically 3 categories: the known public, registered via mac, given static dhcp lease the anonymous lan connections, given lease from specific dhcp range switches, unix hosts firewall Now, consider following hosts which are of interest 111.111.111.111 (Zywall USG 300 WAN) 192.168.1.1 (ZyWall USG 300 LAN) load balances and bw monitors plus handles NAT 192.168.1.2 (Linux www) serves mydomain1.tld and mydomain2.tld 192.168.123.123 (Random LAN client) accesses mydomain1.tld from LAN 23.234.12.253 (Random External client) accesses mydomain1.tld via WAN DNS A records are setup so that both mydomain1.tld and mydomain2.tld points to 111.111.111.111 - and the Linux www serves the http parts with VirtualHost configurations, setting up the document roots pr ServerName, this is not so interesting though.. NAT rule translates 111.111.111.111:80 to 192.168.1.2:80 (1:1 NAT) Our problem follows; When accessing http://mydomain1.tld from outside (23.234.12.253 example host) the joint network - everything is fine, zywall receives requests via port 80 and maps it to the linux host' httpd. However - once trying to go through the NAT from LAN side (in-house, 192.168.123.123 example host) then one gets filtered in the Zywall port 80 firewall. I know this only because port 443 is open for administration interface and https://mydomain1.tld prompts for zywall login. So my conclusion is, that the LAN that accesses 111.111.111.111 in fact are routed to 192.168.1.1 whilst bypassing the NAT table. I need to know how to setup NAT / Policy Route, so that LAN WAN LAN will function with proper network translations instead of doing the 'quick nameserver lookup' or whatever this might be.

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• How to diagnose website performance/app pool recycling with Windows 2008/IIS7

  - by ilasno

  Ok, so there are various symptoms here (clients and and our own employees complaining of intermittent slowdowns, getting 'kicked out' to login page or just having a save request not properly save the submitted data). The environment: Windows Server 2008 (Datacenter), Service Pack 2, 64-bit, 2x2.8 GHz processors, 7.5 GB RAM MS SQL Server 2008 (running on the same machine) IIS 7 There are ~10 websites running on the server, each in their own application pool - most of these pools are running in Integrated mode, 2 are in Classic, all are on .NET 2.0 and all run as ApplicationPoolIdentity. I'm trying to analyze, diagnose, and troubleshoot and am struggling with where to get more info about what could be happening. Here are some steps i have already taken: Set each application pool to recycle once per day, and removed any other automatic recycling Set a Virtual Memory Limit for each to 1024000KB (1GB) Enabled ALL 'Generate Recycle Event Log Entry' entries (Config Changes, Isapi Reported Unhealthy, Manual Recycle, Private Memory Limit Exceeded, Regular Time Interval, Request Limit Exceeded, Specific Time, Virtual Memory Limit Exceeded) I have seen the app pool processes recycle (in Task Manager) - a new one will start up, and then the first one dies off - and this has happened without the memory or time going over the settings. This is a fairly new server, and most of these came from Windows Server 2003/IIS6. Any 'next steps' for setting up information gathering, logging, diagnosing, etc. would be much appreciated! j

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• Postfix spool on ext3 optimiziations in >=linux-2.6.34 days

  - by Luke404

  Given the very specific nature of the subject (we're not talking about mailboxes, just the spool; we're not talking about other filesystems, just ext3; and so on...) and the maturity of the softwares involved (linux kernel, ext3fs, postfix) I'd think there should be a more or less agreed on set of best practices to filesystem related tuning. I'm trying to get a roundup of them: data=journal became the default in recent kernels (somewhere around 2.6.30 IIRC) so we should be ok with that Wietse Venema says atime must be on, but Postfix documentation recommendsnoatime while talking about the Incoming Queue. Does that mean that postfix needs atime on just for some queue directories and will benefit from noatime on the others? can we use noatime if we just don't use ETRN? filesystem can be mounted nodev,noexec,nosuid - no* won't prevent you from setting attributes (postfix uses exec attr) they just won't have any effect (we don't run anything from the spool) the fsync() issue cited by Wietse and/or the chattr -S are probably linked to sync/async options of ext3fs but I do not understand them enough. Mouting the filesystem with async option is equivalent to chattr -R -S the whole fs? Seems like it will increase performance, but will that pose a risk of "loss of mail after a system crash" or is it really "safe on /var/spool/postfix" ? would you tune anything else on postfix-2.6.x to work better on ext3 or do you leave defaults everywhere? is there a "best" linux I/O scheduler for this kind of workload (namely CFQ or deadline?) or that's something that will vary too much based on hardware configuration? would you tune anything else in the filesystem or in the kernel? anything else? References: Postfix Performance here on SF Postfix documentation about the Incoming Queue Wietse Venema in Best file system on [email protected] here Postfix and ext3 on [email protected] here and there

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• Ubuntu 64bit Xen DomU Issues after upgrade from Karmic to Lucid

  - by Shoaibi

  I was upgrading my servers today and it all went fine except the last machine which has the following issues: [Resolved using http://www.ndchost.com/wiki/server-administration/upgrade-ubuntu-pre-10.04#post-1004-upgradefinal-steps] No login prompt on console Done. Begin: Mounting root file system... ... Begin: Running /scripts/local-top ... Done. [ 0.545705] blkfront: xvda: barriers enabled [ 0.546949] xvda: xvda1 [ 0.549961] blkfront: xvde: barriers enabled [ 0.550619] xvde: xvde1 xvde2 Begin: Running /scripts/local-premount ... Done. [ 0.870385] kjournald starting. Commit interval 5 seconds [ 0.870449] EXT3-fs: mounted filesystem with ordered data mode. Begin: Running /scripts/local-bottom ... Done. Done. Begin: Running /scripts/init-bottom ... Done. Also tried by pressing ENTER and CTRL+C many times, no use. Resolved: [/tmp was mounted as noexec, changing that fix it]: I get errors when i try to re-install udev in single user mode: Unpacking replacement udev ... Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot Processing triggers for man-db ... Setting up udev (151-12.1) ... udev start/running, process 1003 Removing `local diversion of /sbin/udevadm to /sbin/udevadm.upgrade' update-initramfs: deferring update (trigger activated) Processing triggers for initramfs-tools ... update-initramfs: Generating /boot/initrd.img-2.6.32-25-server /usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_yuuTSc/scripts/local-premount/fixrtc: Permission denied /usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_yuuTSc/scripts/local-premount/ntfs_3g: Permission denied /usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_yuuTSc/scripts/local-premount/resume: Permission denied /usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_yuuTSc/scripts/nfs-top/udev: Permission denied /usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_yuuTSc/scripts/panic/console_setup: Permission denied /usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_yuuTSc/scripts/init-top/all_generic_ide: Permission denied /usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_yuuTSc/scripts/init-top/blacklist: Permission denied /usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_yuuTSc/scripts/init-top/udev: Permission denied /usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_yuuTSc/scripts/init-bottom/udev: Permission denied /usr/sbin/mkinitramfs: 329: /tmp/mkinitramfs_yuuTSc/scripts/local-bottom/ntfs_3g: Permission denied

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• Multiple Servers + One MailServer

  - by theomega

  Hy, I got several Linux-Servers (running Debian) where different services run: Database-Servers, Webservers, Applicationsservers, Tools and so on. All Servers are connected to the same internal network. There is also one special Server which is the Mail-Server: All Mailaccounts are stored on this server, it is also the outbound Mailserver for all the other servers. I want all Mails for all servers to get saved on the Mailserver. For example if an cron-job fails on one of the web-servers the mail should not be delivered to the local user but instead to the Mailserver so I get a centralized place for mail storage. How do you set up this scenario? My current setup is: Using postfix as MTA on the Mailserver and using ssmtp on all the other servers. SSMTP is configured to send the mails to the Mailserver. The Mailserver is configured to allow the whole internal network to relay mails using itself. Is this the right way to choose? I also thought about setting up a MTA (postfix) on every server and configure it somehow to forward the mails. What would be the advantage of this solution?

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• Monitor reset itself and now I can't set the resolution/settings back to how it was before

  - by verve

  I've had my LG 24" widescreen monitor since 2009 and 2 weeks ago I noticed the monitor turned itself off (never had it done this before) so I switched it back on to find all the settings like gamma, resolution etc. different = looked like it had been reset. Everyone in the house swears they never unplugged and plugged it back in. When I opened a webpage the fonts and zoom on the pages were different and my desktop was strange too; fonts of the icons were different etc. The screen seems blurry and when I watch movies the faces look distorted so I thought I would try to first figure out the resolution it used to be but when I go under "Adjust screen resolution" none of the options work and there is no recommended resolution marked; all the options stretch out the screen and looks terrible so right now I have it set to the least distorted one. Then since the resolution wasn't working I set the other manual settings(done by physical buttons on the monitor) back to how it used to be (luckily, I had written these down). The monitor looks better but the resolution makes it a strain to use. I thought maybe some Windows update caused this crap so I tried to System Restore: didn't work. What went wrong? A few questions: 1) What was the likely cause of the monitor shutting down itself and screwing up the settings I have been using since the day I bought the monitor? 2) Why have the fonts changed everywhere unless this is a HDD/video card problem? 3) How do I find the perfect resolution it used to be? The monitor wants me to set it to 1920 x 1080 but that isn't one of the options although I don't remember what resolution I used before. I use the 16:9 setting while I try the available resolution options but nothing looks good! How do I find what it used to be? Manual available in PDF under Support: http://www.lg.com/ca_en/computer-products/monitors/LG-lcd-monitor-W2442PA-BF.jsp Win 7. IE 9.

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• How to make new file permission inherit from the parent directory?

  - by Wai Yip Tung

  I have a directory called data. Then I am running a script under the user id 'robot'. robot writes to the data directory and update files inside. The idea is data is open for both me and robot to update. So I setup the permission and owner group like this drwxrwxr-x 2 me robot-grp 4096 Jun 11 20:50 data where both me and robot belongs to the 'robot-grp'. I change the permission and the owner group recursively like the parent directory. I regularly upload new files into the data directory using rsync. Unfortunately, new files uploaded does not inherit the parent directory's permission as I hope. Instead it looks like this -rw-r--r-- 1 me users 6 Jun 11 20:50 new-file.txt When robot tries to update new-file.txt, it fails due to lack of file permission. I'm not sure if setting umask helps. In anycase the new files does not really follow it. $ umask -S u=rwx,g=rx,o=rx I'm often confounded by Unix file permission. Do I even have a right plan? I'm using Debian lenny.

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