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Articles indexed Wednesday June 27 2012

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  • Windows Server 2003 guest on Xen frequently stops responding

    - by smokris
    I'm running a Windows Server 2003 guest instance in Xen 3.x. This DomU runs fine for a day or two, then stops responding — I don't get any network response, and I can no longer connect to Xen's VNC console for this DomU. xm list shows this: Name ID Mem VCPUs State Time(s) Domain-0 0 6508 8 r----- 1161159.4 [A working Linux DomU] 1 512 1 -b---- 68711.1 [The hung Windows DomU] 5 512 1 ------ 67234.2 [Another working Linux DomU] 3 512 1 -b---- 163036.4 (What does the ------ mean? The xm manual explains what each of the six states mean, but not what no-state means.) If I xm destroy and then xm create the Windows DomU again, it boots right back up (with the Windows alert The previous system shutdown at [...] was unexpected.), and then stops responding after another day or two. I checked /var/log/xen/*.log, but no log messages are generated at the time the server stops responding. How should I proceed in troubleshooting this?

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  • Apache: multiple domains handling

    - by cache
    So I use following schema to handle multiple sites on my apache: <VirtualHost 192.168.1.100:80> # get the server name from the Host: header UseCanonicalName Off VirtualDocumentRoot /var/www/%0/docs VirtualScriptAlias /var/www/%0/cgi-bin </VirtualHost> Therefore, if a client go to www.example.com, it will actually point to /var/www/www.example.com/doc/, which is good. However, what if the client go to example.com? It will point to /var/www/example.com/doc, which is not what we want. So my question is: is there any better schema for that? Or what should I do to fix the issue? Thanks!

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  • Rewriting to address on postfix local aliases

    - by Wade Williams
    I was running into the common problem that mail for "root" on my system was having $mydomain appended, and because $mydomain is not in $mydestination, the mail was being sent to our central mail server as "root@domain." I cannot add $mydomain to $mydestination, because if I understand it correctly, that would mean all mail addressed to $mydomain would be looked up locally, and if an alias does not exist, delivery would fail. So, I followed these instructions: Delivering some, but not all accounts locally which seems to have resolved the problem. Mail for "root" is now expanded according to /etc/aliases and delivered to the non-local address I desire. The one oddity however is that the "To:" address still reads "root@domain." Is there any way I can get the "To" address to be the one that the alias directed its delivery? So for example, if my alias says that mail for "root" should go to "hostname-admin@domain" is there any way the "To" address can be rewritten as "hostname-admin@domain?" Currently it still shows as "root@domain."

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  • Iptables string

    - by Mr. BeatMasta
    I have an iptables rule like this: iptables -t nat -I PREROUTING -p tcp --dport 80 -s 192.168.1.2 -j DNAT --to-destination 192.168.1.1:80 it works perfectly.. but I want to redirect only for one URL like this: iptables -t nat -I PREROUTING -p tcp --dport 80 -s 192.168.1.2 -m string --string "google.com" -j DNAT --to-destination 192.168.1.1:80 which does not work in any way... please help me with this

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  • Cisco ASA Site-to-Site VPN Dropping

    - by ScottAdair
    I have three sites, Toronto (1.1.1.1), Mississauga (2.2.2.2) and San Francisco (3.3.3.3). All three sites have ASA 5520. All the sites are connected together with two site-to-site VPN links between each other location. My issue is that the tunnel between Toronto and San Francisco is very unstable, dropping every 40 min to 60 mins. The tunnel between Toronto and Mississauga (which is configured in the same manner) is fine with no drops. I also noticed that my pings with drop but the ASA thinks that the tunnel is still up and running. Here is the configuration of the tunnel. Toronto (1.1.1.1) crypto map Outside_map 1 match address Outside_cryptomap crypto map Outside_map 1 set peer 3.3.3.3 crypto map Outside_map 1 set ikev1 transform-set ESP-AES-256-MD5 ESP-AES-256-SHA crypto map Outside_map 1 set ikev2 ipsec-proposal AES256 group-policy GroupPolicy_3.3.3.3 internal group-policy GroupPolicy_3.3.3.3 attributes vpn-idle-timeout none vpn-tunnel-protocol ikev1 ikev2 tunnel-group 3.3.3.3 type ipsec-l2l tunnel-group 3.3.3.3 general-attributes default-group-policy GroupPolicy_3.3.3.3 tunnel-group 3.3.3.3 ipsec-attributes ikev1 pre-shared-key ***** isakmp keepalive disable ikev2 remote-authentication pre-shared-key ***** ikev2 local-authentication pre-shared-key ***** San Francisco (3.3.3.3) crypto map Outside_map0 2 match address Outside_cryptomap_1 crypto map Outside_map0 2 set peer 1.1.1.1 crypto map Outside_map0 2 set ikev1 transform-set ESP-AES-256-MD5 ESP-AES-256-SHA crypto map Outside_map0 2 set ikev2 ipsec-proposal AES256 group-policy GroupPolicy_1.1.1.1 internal group-policy GroupPolicy_1.1.1.1 attributes vpn-idle-timeout none vpn-tunnel-protocol ikev1 ikev2 tunnel-group 1.1.1.1 type ipsec-l2l tunnel-group 1.1.1.1 general-attributes default-group-policy GroupPolicy_1.1.1.1 tunnel-group 1.1.1.1 ipsec-attributes ikev1 pre-shared-key ***** isakmp keepalive disable ikev2 remote-authentication pre-shared-key ***** ikev2 local-authentication pre-shared-key ***** I'm at a loss. Any ideas?

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  • Run a MySQL server in a self-contained folder

    - by codersarepeople
    I've seen many questions about how to run multiple sql servers on one server, but I would like to run mysqld as a user-level process and completely self contained in a folder (I have no permissions outside my user folder). I spent some time using the --defaults-file=my.cnf, but it still seems to conflict with the system-level mysql server that's running. Does anybody know how to do this? Thanks in advance!

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  • Remote RAID Control in ESXi on a Dell PowerEdge 2950 Using OpenManage

    - by yoyomommy
    I was wondering how one can add a drive into an existing RAID array while ESXi is still running. I have read that you are able to use Dell OpenManage to do this. I have installed OMSA 7.0 on the VMWare ESXi host (5.0 and fully updated) and I've installed OpenManage Essentials on a Windows Server 2008 R2 guest. The issue that I'm having is that OpenManage is unable to see my RAID controller. I have seen videos and photos as parts of guides on how to do this online, so I would assume that the functionality exists and I just have it set up wrong.

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  • Very slow printing from print server

    - by evolvd
    Print server is a VM on Xen The VM is Windows 2003 32bit. During the issue the VM is not being taxed in anyway, cpu, memory, hd read/write, and network speed is all good. The problem that I see is the transfer of the print file from the print server to the printer. The 80Mb file is transferred from the client to the print server in about 2 minutes but then it takes about 2 hours for that file to be sent to the printer. I can't figure out why this would just start to happen. The printer is rebooted every evening and is just used for one large print job in the morning. The server has been rebooted with no effect I changed the spool option to send the entire spool to the server before printing starts and it had no effect. This printer problem did happen to come about after some changes to the Xen environment. The Xen servers changed from using HBA NIC cards to software iscsi and a new switch was put in. I don't think this is related to the problem since all the speeds on the VMs are better now. The changed happened on Saturday and the first print to this printer happened on Monday morning. I'm just putting that out there but like I said I don't think it is related but I don't want to rule it out. At this point I don't have many other options besides the physical layer. I can switch out network cable that goes to the printer and I might be able to print the same job to another printer. I wont be able to test those things out till this afternoon though. Any other ideas or test I could do to try to find the reason for the slow speed? I forgot to say that this is only happening when printing to this one printer. ===Update=== I found out that there are a few printers that currently have this issue, not just the one. There are over 30 printers on the server though so I know it's not happening to all of them. I printed a large pdf doc from the server and it was able to print at the normal speed. If the machine sends the large print request it gets to the server fine but then slow to get from the server to the printer. If sent directly from the printer it gets to the printer at the normal speed. The question now is why is there a speed difference when it comes from the machine and why would it start now?

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  • cisco asa + action drop issue

    - by ghp
    Have created a tunnel between 10.x.y.z network and 122.a.b.c ..the tunnel is up and active, but when I try the packet tracer output ..I get the ACTION as drop. I have also enabled same-security-traffic permit intra-interface. Can someone help me what does this drop mean? Result: input-interface: inside input-status: up input-line-status: up output-interface: outside output-status: up output-line-status: up Action: drop Drop-reason: (acl-drop) Flow is denied by configured rule Packet Tracer output @Shane Madden: please find below the packet tracer output. CASA5K-A# CASA5K-A# config t CASA5K-A(config)# packet-tracer input inside tcp 10.x.y.112 0 122.a.b.c 0 Phase: 1 Type: ROUTE-LOOKUP Subtype: input Result: ALLOW Config: Additional Information: in 0.0.0.0 0.0.0.0 outside Phase: 2 Type: ACCESS-LIST Subtype: Result: DROP Config: Implicit Rule Additional Information: Result: input-interface: inside input-status: up input-line-status: up output-interface: outside output-status: up output-line-status: up Action: drop Drop-reason: (acl-drop) Flow is denied by configured rule CASA5K-A(config)# ======================================================================== The access-group are as follows : access-group acl-inbound in interface outside access-group acl-outbound in interface inside and the access-list's are access-list acl-inbound extended permit tcp any any gt 1023 access-list acl-outbound extended permit ip object-group net-Source object net-dest

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  • How much does the geographical location of DNS servers matter?

    - by GreatFire
    We have started to run our own DNS servers located in Asia since that's where our main audience is. However, it seems that some users in the US are having difficulties accessing our website sometimes. I've noticed myself that DNS lookups of our domain from the US are relatively slow (500 msec+). Maybe the problems some users are having are due to other DNS configuration errors, but in general, how much of an issue is the geographical location of DNS servers? Should we have an additional server in the US?

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  • Allow access to printer between interfaces on Cisco ASA5510

    - by Jonas Stensved
    I have a Cisco ASA5510 where we have to separate networks on two separate interfaces. The networks have and should have nothing to do with each other except that network B needs to access a printer on network A. Network A: 192.168.137.0/24 Printer: 192.168.137.20 Network B: 192.168.0.0/24 I've added an incoming rule from Network A to the Printer IP in the ASDM interface but clients can't print. Our previous router was configured to let traffic through so the clients on Network B is already configured so it think it should work if the traffic is allowed. How do I let clients on Network B communicate with the printer?

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  • ProCurve ACL to prevent a subnet from leaving the switch

    - by kce
    I have a single HP ProCurve 2610 in a remote location that is connected in with the rest of the network via SHDSL. There are two Layer-3 networks on this segment. ACLs are setup to deny one subnet (192.0.2.0/24) from ever being able to leave the switch by virtue of being applied to port attached to the upstream connection. The other subnet should be permitted to freely leave the switch. Both subnets are on the same VLAN. Unfortunately SFlow very clearly show broadcast traffic from 192.0.2.0/24 on the upstream connection. ProCurve ACLs are not my strong suit but I feel like I'm missing something very simple here. ip access-list extended "Filter for Camera Network" deny ip 192.0.2.0 0.0.0.255 0.0.0.0 255.255.255.255 log permit ip 0.0.0.0 255.255.255.255 0.0.0.0 255.255.255.255 exit interface 24 name "DSL - UPLINK" access-group "Filter for Camera Network" in exit Unless I am mistaken traffic from 192.0.2.0/24 should be dropped as it crosses the uplink port (int 24) whereas all other traffic will be permited by the following default allow rule. What exactly am I missing here? EDIT: Firstly, why do you have two subnets contained in the same VLAN? Because that's how it was configured by a previous administrator and while it makes conceptual sense that a single subnet is "mapped" to a single VLAN there's no technical constraint that I am aware of that makes this have to be the case. Instead of filtering inbound traffic on your uplink, you should be filtering outbound traffic. The HP2600 series can only filter inbound traffic on interfaces. Should I change my filter to deny any to 192.0.2.0/24?

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  • Tomcat directly serve static (css, js) files shared by multiple applications

    - by Josvic Zammit
    I'm using the ExtJS framework which has a bulk of js and css files that are used for all apps. I intend to share these between a number of web applications (different war files). For this reason I would like to serve ExtJS js and css directly from the web server, in my case Tomcat6, which can be used to serve static files, as in this helpful link. Therefore I put my files under /var/lib/tomcat6/webapps/ROOT/extjs/. The static files that are directly under that directory are served correctly, e.g. /extjs/ext.js correctly serves the file at /var/lib/tomcat6/webapps/ROOT/extjs/ext.js. However files in lower-level directories, for example /extjs/welcome/css/welcome.css, which should serve the file at /var/lib/tomcat6/webapps/ROOT/extjs/welcome/css/welcome.css, return a 404. TL/DR Tomcat serves static files only at top-level directory. A 404 is returned for files deeper in the hierarchy. Config file contents: server.xml application's web.xml

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  • How to manage groups and users in Jenkins

    - by Michael
    I'm trying to use role based security plugin in Jenkins, but i'm not sue i am using it right. I've decided to go with jenkin's own user database as a security realm instead of LDAP. i'm adding the users one by one. Now in the Assign Roles screen, i have global roles like administrator, read only etc... and i have project specific roles like prod_a_developer, prod_b_developer... For each user, do i have to both assign one of the global roles for him and also assign a specific project role ? Also, how do i assign a user to a group ? instead of assigning each user a global role i want to assign a group a global role. not so trivial, Can someone please help me ? Thanks.

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  • Dell PowerEdge 6850 Degraded HDD

    - by Matt
    Good Morning, We have a dell power edge 6850 with a degraded drive in the RAID array. I have never had to recover such an issue, so any help or advice would be welcome. Basically it hasn't affected the server at an operating system level, but has slowed down performance, I have a replacement drive in hand but as this is our main database server I want to proceed with extreme caution. My options as I see them are - Can I just hot swap the degraded drive with the new one and the data will automatically re-sync and we are all back to normal presumably this is dependant on the current raid configuration? reading various comments on-line I may need to re-configure the RAID array and re-build the broken drive? This screams disaster to me with the main worry being that I wipe any other data. Option 1 would of course make my day. Thanks in advance

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  • "Unknown user name or bad password" when I launch ADUC

    - by Chris
    When I open up Active Directory Users and Computers from my workstation, I receive an error: Naming information cannot be located because: Logon failure: unknown user name or bad password. Contact your system administrator to verify that your domain is properly configured and is currently online. If I log in to my workstation as somebody else, it works. If I log into a different workstation using my account, it works. All the workstations in question are running Windows Vista (32 and 64 bit) or Windows Server 2008. The domain controller in question is running Windows Small Business Server 2008. Everything else (that I tried) in the Remote Server Administration Tools runs just fine. Any thoughts? Edit: I just tried reinstalling RSAT. No such luck.

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  • Multiple SSL Certificates Running on Mac OS X 10.6

    I have been running into walls with this for a while, so I posted at stackoverflow, and I was pointed over here... I am attempting to setup multiple IP addresses on Snow Leopard so that I can develop with SSL certificates. I am running XAMPP - I don't know if that is the problem, but I guess I would run into the same problems, considering the built in apache is turned off. So first up I looked into starting up the IPs on start up. I got up an running with a new StartupItem that runs correctly, because I can ping the ip address: ping 127.0.0.2 ping 127.0.0.1 And both of them work. So now I have IP addresses, which as you may know are not standard on OSx. I edited the /etc/hosts file to include the new sites too: 127.0.0.1 site1.local 127.0.0.2 site2.local I had already changed the httpd.conf to use the httpd-vhosts.conf - because I had a few sites running on the one IP address. I have edited the vhosts file so a site looks like this: <VirtualHost 127.0.0.1:80> DocumentRoot "/Users/jim/Documents/Projects/site1/web" ServerName site1.local <Directory "/Users/jim/Documents/Projects/site1"> Order deny,allow Deny from All Allow from 127.0.0.1 AllowOverride All </Directory> </VirtualHost> <VirtualHost 127.0.0.1:443> DocumentRoot "/Users/jim/Documents/Projects/site1/web" ServerName site1.local SSLEngine On SSLCertificateFile "/Applications/XAMPP/etc/ssl-certs/myssl.crt" SSLCertificateKeyFile "/Applications/XAMPP/etc/ssl-certs/myssl.key" SetEnvIf User-Agent ".*MSIE.*" nokeepalive ssl-unclean-shutdown <Directory "/Users/jim/Documents/Projects/site1"> Order deny,allow Deny from All Allow from 127.0.0.1 AllowOverride All </Directory> </VirtualHost> In the above code, you can change the 1's to 2's and it is the setup for the second site. They do use the same certificate, which is why they are on different IP addresses. I also included the NameVirtualHost information at the top of the file: NameVirtualHost 127.0.0.1:80 NameVirtualHost 127.0.0.2:80 NameVirtualHost 127.0.0.1:443 NameVirtualHost 127.0.0.2:443 I can ping site1.local and site2.local. I can use telnet ( telnet site2.local 80 ) to get into both sites. But in Safari I can only get to the first site1.local - navigating to site2.local gives me either the localhost main page (which is included in the vhosts) or gives me a Access forbidden!. I am usure what to do, any suggestions would be awesome.

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  • App pool gets stuck on reset and takes .net pages out

    - by user8042
    Several times after our app pool has been told to reset, it gets stuck, the .net pages go down and the following error appears in the application event log: Failed to execute request because the App-Domain could not be created. Error: 0x80070057 The parameter is incorrect. Our app pool is scheduled to automatically reset at 4am, so the errors stay up until we manually restart the app pool. Has anyone else encountered the error or know of any solutions? Research has suggested it's a permissions issue, but the permissions don't change and the error happens infrequently. The site has no other permission based problems and the app pool identity has permission where needed.

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  • How to encode video to use HTML 5 video tag? [closed]

    - by exquisitor
    I'm trying to use <video> tag feature. I've encoded my file with ffmpeg: ffmpeg -i 1.vob -f ogg -vcodec libtheora -b 800k -g 300 -acodec libvorbis -ab 128k out.ogv I've placed this text in index.html: <video src="out.ogv" controls></video> I've loaded this files to nginx document root and opened index.html in Firefox 3.5. I see the first frame, see controls, but can't play video. This video plays good even from my server. How should I encode video to view it in browser? UPD: If I start playing video from the middle, everything works fine.

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  • How SSD's drives reduce their latency?

    - by tigrou
    First time i read some information about SSD's, i was surprised to learn they internally use NAND flash chips. This kind of memory is generally slow (low bandwidth) and have high latency while SSD's are just the opposite. But here is how it works : SSD drives increase their bandwidth by using several NAND flash chips in parallel. In other words, they do some data striping (aka RAID0) across several chips (done by the controller). What i don't understand is how SSD's drives managed to reduce latency? (or at least lot better than what a single NAND chip without any controller can do)

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  • Removing expired self-signed certificate in IE9 (created with IIS7.5)

    - by Itison
    Over 1 year ago, I created a self-signed certificate in IIS 7.5 and exported it. I then installed it for IE9 (it may have been IE8 at the time), which worked fine until a year later when the certificate expired. I have put this off, but today I created a new self-signed certificate in IIS, exported it, and attempted to install it in IE9. The problem is that for whatever reason, IE cannot seem to forget about the old, expired certificate. Here's what I tried initially: Accessed my ASP.NET application and see the Certificate error. Clicked "View certificates". Clicked "Install Certificate" and then Next/Next/Finish. At this point, it says the import is successful, but it still only shows the expired certificate. I've tried simply double-clicking on the exported certificate on my desktop. Initially I chose to automatically select the certificate store, but then I tried it again and manually selected "Trusted Root Certification Authorities". I've also tried dragging/dropping the certificate over an IE window and clicking "Open". The process is then exactly the same as it is if I had double-clicked on the certificate, but I had hoped that this would somehow specifically tell IE to use this certificate. I tried opening MMC and with the Certificate snap-in, confirmed that the new certificate was added under "Trusted Root Certification Authorities". It was also under my "Personal" certificates (I guess this is where it goes by default). Nothing worked, so I went through every folder in MMC and deleted the expired certificate. I also deleted the expired certificate in IIS. Nothing has worked. Any ideas? I see no clear resolution and I can't seem to find any posts related to this issue.

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  • Exclude all hidden directories in UNIX find

    - by xRickerlx
    I'm doing a word search using the following command: find . -exec grep -q [some_word] '{}' \; -print -o -name .svn -prune -o -name .ssh -prune -o -name .boneyard -o -name log -prune -prune -o -name tmp -prune Is it possible to use a regex to exclude all hidden directories? Note: The current command traverses the entire tree from the current location and exclude those being pruned. The exclusion needs to work for any hidden directory regardless off location.

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  • Will installing an Ultra ATA cable backwards affect performance?

    - by GMMan
    I've recently purchased a hard drive upgrade for my Xbox 320GB WD Caviar Blue WD3200AAJB and StarTech.com Ultra ATA/66/100/133 cable IDE66 yes I'm crazy When it came to installing the cable, it was too short (my fault), and there wasn't enough space between the master and slave ends to reach both the DVD drive and the hard drive. The only thing I could do was install the cable backwards and twisting it quite a bit to make it fit. The upgrade works, but reading the manual for the hard drive I replaced (10GB Seagate U Series 5), apparently there is a specific way you have to connect the cable. I don't have that option, so the question comes down to, will my drive performance be at Ultra ATA levels, or is it still performing at original ATA speeds? Is there any way I can test this (benchmarking software for Xbox)?

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  • Connect to multiple proxy server

    - by mostafa
    my company share internet through two proxy server. without enterning proxy detail in program such as firefox, I don't have any access to internet. each proxy server bandwidth limit is 512kbps. how can i combine two proxy server traffic to get 1mbps bandwidth? client sucsh as proxifier chain both proxy but only use one of them at a time. if one failed to connect, proxifier connect to other proxy in the chain list.

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  • Windows 7 Desktop as Bluetooth Mixer

    - by J.R. Lillard
    I would like to stream all the audio from my Droid X2 to my desktop running Windows 7 via bluetooth. When I pair the two devices I can make this work but the audio plays through the internal speakers. I am actually wanting to listen to everything through a pair of bluetooth headphones. The end result would be that I could listen to music from my phone but easily pause it to listen to audio from the desktop instead. So far I have not had any luck. I thought about connecting the line out to the line in so I could monitor the line in from my headphones. My current setup is wiring the phone to the line in and then monitoring the line in through the headphones. I'm just wanting to eliminate the wire and go wireless the whole way. Is there something in Windows that prevents it from taking an inbound audio stream and sending it out another device?

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