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• Difference between Admin and Manager role in Tomcat6

  - by Nyxynyx

  What are the roles admin and manager used for in Tomcat6? The manager role appears to give me access to http://domain.com:8080/manager/html. Which page does the admin role give me? In the file, the description for admin role is pretty vague. What is the host manager webapp? <!-- The host manager webapp is restricted to users with role "admin" --> <!--<user name="tomcat" password="password" roles="admin" />--> <!-- The manager webapp is restricted to users with role "manager" --> <!--<user name="tomcat" password="password" roles="manager" />-->

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• RAID Array performance on an HP Proliant ML350 G5 Smart Array E200i

  - by Nate Pinchot

  We have a client who is complaining about performance of an application which utilizes an MS SQL database. They do not believe the performance issues are the fault of the application itself. The Smart Array E200i RAID controller has 128MB cache and we have the cache set to 75% read/25% write. The disk array set to enable write caching. Recently we ran a disk performance test using SQLIO based on this guide. We used a 10 GB file for the test found that the average sequential read rate was ~60 MB/sec (megabytes/sec) and the average random read rate was ~30 MB/sec. Are these numbers on par for what the server should be performing? Better than on par? Horrible? Amazing?

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• Mysterious login attempts to windows server

  - by Jim Balo

  I have a Windows 2008R2 server that is reporting failed login attempts from a number of workstations on our network. Some event log details: Event ID 4625, Status: 0xc000006d, Sub Status: 0xc0000064 Security ID: NULL SID, Account Name: joedoe, Account Domain: Acme Workstation Name: WINXP1, Source Network Address: 192.168.1.23, Source Port: 1904 Logon Process: NtLmSsp, Authentication Package: NTLM, Logon Type: 3 (network) I believe this is coming from some netbios service or similar (maybe the file explorer), keeping an inventory of its network neighborhood and also trying to authenticate. Is there a way to turn this off without having to turn off file sharing all together? In other words, clients authenticating against file servers that they use is of course no problem, but I want to eliminate clients trying to authenticate to servers that they are not using and have no business with. The above example is only one of thousands of log alerts for similar failed network authentications. What can I do to clean this up / handle this? Thanks.

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• Listing side projects in a jr. sysadmin resume

  - by Beaming Mel-Bin

  I have many "side-projects" that were not part of my past jobs. Just for example: Configuring web site environment for professors and friends Configuring a Linux box that does the routing, firewall (iptables), backup and file sharing (samba) for my apartment Developing small websites for things as simple as party invites to polling friends. Running my own SMTP server with domain keys, SPF and DNSBL Etc., etc. What would be the appropriate section to mention this? Should I even mention it? Perhaps it's best to just bring it up during the interview. I would especially appreciate the opinion of hiring managers.

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• I am unable to get the subdomain from the URL in NGINX

  - by Jean-Nicolas Boulay Desjardins

  I am unable to get the subdomain from the URL in NGINX. Here is my config: server { listen 80; server_name ~^(?<appname>)\.example\.com$; rewrite ^ https://$appname.example.com$request_uri? permanent; } When I do: http://bob.example.com/ I am sent to: https://.example.com/ I don't know what I am doing wrong. I am using NGiNX 1.2.7. I have another config for the: http://example.com/ So I have one server block for the domain without the subdomain and the second with the subdomain... This is about the subdomain.

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• World Wide Publishing Service very slow to restart on IIS? Why?

  - by StacMan

  Every now and then, we look to restart our IIS server by restarting the "WWW Publishing Service". On most systems this would usually only take a minute or two, but this can often take up to 10 minutes to stop the server and restart. Does anyone know any way to work out what is taking so much time to stop the service? After reading up around the net I've learned this may be due to locked resources used by users and/or lower-level IIS cached items being recycled. But I cant seem to work out where I can validate if this is true on not. Also if anyone knows how to fix or speed this up, that would be excellent. We have a large codebase which contains over 280 aspx pages across the site. Our main domain contains about 100 aspx pages whilst the subdomains contain 15 or 20 each. Some specs: Code is written in C#; runs on .Net framework 2.0 Server Windows Web Server 2008 IIS7; DB running SQL Server 2008 Standard

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• active directory servers synchronization

  - by Mit Naik

  I have 3 AD servers with windows server 2008 R2 at 3 different places, main server is at datacenter and 2 are in our local office which are at 2 different place. I want to synchornize all the 3 server together, were datacenter server should be central server and rest 2 servers should synch with the datacenter server. Please provide us the steps or tutorial to do this. Also we want that once the changes are done in 1 of the AD server the changes are automatically done in all the servers. For example if I change the password of user in our local server it should be updated in our main AD server and other branch server too. Please provide us the steps or tutorial to do this asap. I have one more question I have already created main datacenter AD as domain.local and other domains as xyz.local and abc.local, how can I replicate the additional AD domains with main datacenter DC, also do we require VPN connection, is there any other way to replicate the servers without using VPN connection?

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• Roaming profile migration failed using Windows explorer manual copy

  - by Albert Widjaja

  Hi All, I'm at the final stage of migrating an old demoted DC server, now I'm stuck in migrating/copying the roaming profiles of the users from the old win2k server (oldServer1) into the new win2k3 server (newServer1) there are lots of profiles which points into the old server: \\oldServer1\profiles\user1 \\oldServer1\profiles\user2 \\oldServer1\profiles\user3 . . . \\oldServer1\profiles\userN in the ProfilePath I'd like to move it into: \\newServer1\profiles\user1 \\newServer1\profiles\user2 \\newServer1\profiles\user3 . . . \\newServer1\profiles\userN I tried to copy paste from my DOMAIN\Administrator account but it is failed to copy ? i cannot even browse inside the directory of user1 until userN ? is there any fastest way to do the copy process rather than "taking ownership" for each of those directory one by one ? [hopefully by taking ownership the user will still be able to use their profile normally] Thanks.

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• Unknown Host Error, is this a registrar problem or a host problem?

  - by jerrygarciuh

  Hi guys, I am dealing with a barrel of weasels on this one. Ad agency registered the domain in mid-August with Network Solutions. 72 hours ago I updated the DNS to point to a host provided by an associate of the client whose credentials are dubious. The DNS servers are at NETSONIC.NET (NS1 and NS2) and respond to ping no problem. I can FTP to the server using its IP but the name is no go. The name is also no go for tracert and ping: tracert voodoobbqfranchise.com Unable to resolve target system name voodoobbqfranchise.com. ping voodoobbqfranchise.com ping: unknown host voodoobbqfranchise.com I called NetSol and of course their tier one guy swears it must be the host but I insist that an unknown host must be a NetSol issue. Otherwise we'd get somethng like an httpd_conf error after being routed to the Netsonic server. Am I right? Is this an issue at the registrar? TIA JG

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• robot hammering apache2

  - by user1571418

  My apache2 log is bombarded with lines like: 108.5.114.118 - - [03/Aug/2012:15:23:28 +0200] "GET http://xchecker.net/tmp_proxy2012/http/engine.php HTTP/1.0" 404 1690 "http://xchecker.net/tmp_proxy2012/http/engine.php" "Mozilla/4.0 (compatible; MSIE 6.0; Windows 98; Win 9x 4.90)" I am puzzled by this -- why is a request for some weird xchecker.net domain ending up on my server in the first place?! The request comes every few dozens of seconds, must be a robot. Any ideas what it is? Btw that URL is valid -- apparently it contains some test page...

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• LSI SAS 1064E drivers for Server 2012

  - by rendentucson

  I have a need to place Windows Server 2012 onto a Sunfire X4100 blade server that contains a LSI SAS 1064e RAID controller (2006). The LSI site only has drivers up to server 2008 R2. I did attempt to install server 2012 hoping it might contain generic MS Drivers (I was dreaming, I know). That failed. I attempted to load external LSI drivers for server 2008. That failed as well. Am I out of luck, or did I miss something? Thanks in advance.

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• Postfix + Exchange + ActiveDirectory

  - by itwb

  Client has got many sub-offices, and one head office. Headoffice has a domain name: business.com all users in the many sub-offices need to have a headoffice email address: [email protected] Anyone not in head office will need the email forwarded to an external email address. All users in head office will have their email delivered to exchange. Users are listed in active directory under 2 different OU's. "HeadOffice" or "SubOffice". Is this something able to be configured? I've done some googling, but I can't find any examples or businesses set up this way. Thanks

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• What value does SenderID provide over SPF and DKIM?

  - by makerofthings7

  I understand that SPF "binds" a message envelope to a set of permitted IP addresses. SenderID (with the default pra option) "binds" the message header to a set of permitted IPs in addition to the SPF logic. DKIM "binds" the from address header (and any additional header the sender chooses), and the body to a DNS Domain name I'm using the word "bind" above instead of "authorized" because it makes more sense (to me) Questions: If SPF is already verifies a message FROM in the envelope, why is there a need to check the headers? When would the need to verify the envelope (SPF) need to be different than the headers (SenderID) If I'm already verifying the headers with DKIM, why do I need SenderID? Most large companies I've checked don't disable SenderID with an explicit record. EBay is a notable example of one that does. What is the rationale for disabling SenderID "pra" processing of outbound messages?

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• Samba setup to request password reset on first time login

  - by crazybyte

  Is it possible to setup Samba to ask for password reset when the user first logs in without the need to setup a domain controller? Would this work properly with Windows clients or with clients using Linux with file managers like Krusader or Nautilus? Could somebody give me a few pointers how to implement this if is possible? I'm pretty new to Samba and I use it as a file server and I would like to have such a feature on it, but I'm not sure if it's possible. Thanks!

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• Slow Network Performance with Windows Server 2008 SP1

  - by Axeva

  I recently installed Service Pack 1 for Windows Server 2008. Since that time, network performance has been awful. Both Windows 7 and Mac Snow Leopard clients have seen miserable speeds when trying to read or write to the server. This is the exact update: Windows Server 2008 R2 Service Pack 1 x64 Edition (KB976932) It's a very simple file server setup. No Domain or Active Directory. Essentially just shared folders. It's Windows Web Server that I'm running. Are there any settings I can tweak? Should I roll back the update (doesn't seem wise)? Update: I've turned off the Power Management for the Network Adapter. That may help. If it doesn't have to be powered on at the start of a request, it should speed things up. Or so I would assume.

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• How to setup and manage a shared hosting server on Windows Server 2008 R2 Web Edition?

  - by Motivated Student

  Background I am a newbie in using Windows Server 2008 R2 Web Edition (and other editions as well). I have a static IP, a very fast internet connection, a server (PRIMERGY TX100 S1 Server) and Windows Server 2008 R2 Web Edition (trial version). The objective is to setup the server to be a shared hosting server such that each of my friends has a private account to manage his/her domain. to upload his/her web content to the server using the encrypted ftp. to manage database administration. to manage Certificate. etc Questions Is there a good reference to learn "how to setup and manage a shared hosting server on Windows Server 2008 R2" ? What are the rough steps I have to do to accomplish my objective?

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• How can i resolve all external addresses to internal address?

  - by Darian

  I am currently setting up a Linux server for a WIFI access-point. When ever someone who is connected to the hotspot/access-point? tries to reload a page they get forced onto the one page. Note: this wont have internet access! ie: user tries accessing www.google.com = it returns 192.168.1.200 or example.domain I've read that "dnsmasq" can be used to redirect any external addresses to an internal address. but haven't had any luck. Anyone have an example of a config for "dnsmasq"? I have also read that this can be done through a proxy?

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• Virtualmin Configuration

  - by Allen

  I am trying to get Virtualmin setup and have reached a point where my noobish sysadmin skills aren't getting the job done. This is the message I get now when I try and refresh the configuration of Virtualmin. BIND DNS server is installed, and the system is configured to use it. However, the default master DNS server XXXXXX is not a fully qualified domain name. Sendmail is only accepting SMTP connections on the following ports : 127.0.0.1 port smtp. Email from other systems on the Internet will not be accepted. This can be changed in the Sendmail Mail Server module. Please advise what I need to do to get Sendmail configured properly. Thanks!

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• Failed depencies: libmysqlclient.so.16 is needed

  - by user54625

  I'm trying to install something on my server that requires mysqlclient, but looking at my RPM package list I have it ("MySQL-client-5.0.91-0.glibc23"). Doing a locate on libmysqlclient gives me this: [root@host.domain.net] ~ >> locate libmysqlclient /usr/lib64/libmysqlclient.so /usr/lib64/libmysqlclient.so.15 /usr/lib64/libmysqlclient.so.15.0.0 /usr/lib64/libmysqlclient_r.so /usr/lib64/libmysqlclient_r.so.15 /usr/lib64/libmysqlclient_r.so.15.0.0 /usr/lib64/mysql/libmysqlclient.a /usr/lib64/mysql/libmysqlclient.la /usr/lib64/mysql/libmysqlclient.so /usr/lib64/mysql/libmysqlclient_r.a /usr/lib64/mysql/libmysqlclient_r.la /usr/lib64/mysql/libmysqlclient_r.so /usr/local/cpanel/lib64/libmysqlclient.so.14 For some reason it looks like I'm missing libmysqlclient.so.16. Does anyone know why this could be? How do I go about getting it? I'm currently running CentOS 5. Thanks a lot.

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• Authentication problem: can't bypass the login prompt when browsing to the SQL Reporing Services web

  - by laurens

  Hi all, I'm having a hard time configuring Reporting services on one of our servers. I'm not uninitiated in the domain of IIS7 but I cannot get rid of the login prompt when I'm surfing to the Reporting services website. What I did: I made a windows and SQL user with the same name: Then I choose Anonymous authentication in II7 and filled in the credentials of the specific R.S. user http://img32.imageshack.us/i/iis7auth.jpg/ I choose 'Local Service' as the service account in the R.S. configuration mgr http://img88.imageshack.us/i/rsconfigmgr.jpg/ The first problem is that there's always a pop-up when surfing to the website The second is that when I'm able to log in I get the message that the user doesn't have the appropriate permissions. The pop-up: http://img693.imageshack.us/i/loginpopup.jpg/ The server is a 2008 Web Server with SQL 2008 R2 Express. What I'm I doing wrong? Thanks in advance!

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• Best practices for mass email platform

  - by Niro

  I am in the process of setting up mass email service. My question is: what are the best practices to achieve maximum deliver-ability. More precisely - what should I do/know to prevent spam filters from blocking the emails (the emails are not spam). for example- how can I tell if my IP address is blacklisted somewhere and how can I prevent it from becoming blacklisted. Is amazon web services a suitable platform due to dynamic IP addresses, what are the restrictions on the from address, can it be different from the mail server domain.... you get it....

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• Windows 7 Group Policy blocking Adobe Reader

  - by Danny Chia

  A few weeks ago, my company blocked Adobe Reader due to an unpatched security issue. However, we recently moved one of our computers to a project that didn't require access to the corporate network, and IT gave us the green light to override Group Policy and re-enable Adobe Reader. However, this is something we've been unable to achieve. We've tried the following (in no particular order), all to no avail: Ran the program as administrator Renamed the program (the blocking is likely signature-based) Deleted registry.pol Changed the value of "Start" in \HKEY_LOCAL_MACHINE\CurrentControlSet\services\gpsvc to "4" (to prevent group policy from applying, even though it's no longer on the corporate domain) Checked SRP settings under Local Security Policy - nothing was there Checked AppLocker settings under Local Security Policy - nothing there either Incidentally, I found a few registry keys with descriptions referring to Adobe Reader being blocked. I deleted all of them, but it didn't help. Changed the permission settings of the program Re-installed Adobe Reader Is there anything I missed, short of doing a clean install?

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• SPF problems with Google Apps

  - by mahle

  I currently have an SPF record with a hostname of @ that is: v=spf1 mx ip4:x.x.x.243/32 include:_spf.google.com include:amazonses.com ~all I also have another record of" spf2.0/pra mx ip4:x.x.x.243/32 include:_spf.google.com include:amazonses.com ~all We have had a lot of email being bounced back because of spam and now when I go to http://www.kitterman.com/spf/validate.html? and check the "Does my domain already have an SPF record? What is it? Is it valid?" it says no spf record exists. However, when I send an email using our Amazon SES script and check the headers it says it passes the SPF test. Is there something I am missing? Do I need to place that text in quotes ""? Any help would be greatly apprecaited.

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• Debian Lenny - network interfaces(eth) are in DOWN state

  - by pachanga

  Folks, I'm facing a very weird problem with one of my production servers(it's Debian Lenny) - after reboot network interfaces(eth0,eth1) are in DOWN state. Looks like an Intel based networking adapter is installed on the server, lspci lists it as follows: Ethernet controller: Intel Corporation Device 10c9 (rev 01) The kernel driver responsible for this adapter is "igb". I tried "modprobe -r igb && modprobe igb", network interfaces first disappear then appear, but they are in DOWN state again. What could go wrong? It used to be working just fine. How can this be fixed?

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• Flexible virtualization infrastructure Design with libvirt

  - by Lessfoe

  I'm going to install a CentOS6 Server with Virtualization ( libvirtd ) capabilities on a DELL Server with Hardware RAID5 of around 6T of disk space ( It has 4x2T disks in a PERC700 RAID Controller ). I'm going then to install some guests which requires few resources except one that needs 500GB of disk space, 8/16GB of RAM and good performances. I was thinking about file images for guests storage but I'm not sure about the 500GB VM what needs good performances so that an LVM device could be better. So my question is what would be the best layout concerning: RAID setup ( RAID5, RAID1 + 1 disk for OS only. ) disk partitioning ( using the entire disk/ leave free space for future use and extending it with LVM ) guests storage management ( LVM devices or file images ( considering the 500GB VM that is performance demanding ) or mixed ) Where to put guests storage? /var/lib/libvirt/images or maybe in a custom dir separated from system /home/VMs Thanks in advance for any hint.

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