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• how to setup a bridge with 2 NICs and few virtual machines

  - by Bond

  Here is my situation. I have a server with 2 NICs. I have installed virtual box and I have created a few Guest Operating Systems on it. I want these Virtual Machines to be using a bridge.NIC2 would be used to setup this bridge and NIC1 would be connected to corporate network.I am not clear with how should I go on doing this. /etc/network/interfaces is the file which I am trying to modify etc. My approach is following 1) Define a configuration file /etc/network/interfaces 2) Create IPTABLES as how NIC1 will forward the packets to Bridge on NIC2 Now comes the problem I do not understand what is the meaning of following lines in the configuration file auto lo iface lo inet loopback # The primary network interface auto eth2 iface eth2 inet manual auto br0 iface br0 inet static address 192.168.1.14 netmask 255.255.255.0 network 192.168.1.0 broadcast 192.168.1.255 gateway 192.168.1.10 # dns-* options are implemented by the resolvconf package, if installed dns-nameservers 192.168.13.2 dns-search myserver.net bridge_ports eth2 bridge_fd 9 bridge_hello 2 bridge_maxage 12 bridge_stp off So any pointers to what should be the entries of /etc/network/interfaces file. So that I understand which parameter is to be used when and where that would help me.

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• Disabling LDAP Signing on Windows PDC in Local Policy

  - by Golmaal

  I just tripped over my own feet it seems. Playing around on a Windows 2008 R2 server (set up as domain controller), I was intrigued by certain warning event (event id 2886) which says: "To enhance the security of directory servers, you can configure both Active Directory Domain Services (AD DS) and Active Directory Lightweight Directory Services (AD LDS) to require signed Lightweight Directory Access Protocol (LDAP) binds." So I thoughtlessly did some Googling and set the relevant policies which enforce LDAP signing. Now I don't remember but I may have done that using Local Policy. Now I have setup a pfsense box which must authenticate AD users via LDAP. While the firewall can communicate over secure channel, it is difficult to manage the same for other packages such as Squid and SquidGuard. So now I have to disable i.e. undo those policy changes. The problem is that they are greyed out! The policies in question are LDAP server signing and LDAP client signing. I don't remember what I did but when I access these policies from Local Policy editor on the server, they are set to "Require Signing" and are greyed out. The same policies can still be set via Default Domain Controller option in Group Policy editor. So how can I reset these greyed out policies? Thanks

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• Do eSATA HDD docking stations have a capacity limit?

  - by Michael Kjörling

  I'm looking at perhaps buying an eSATA docking station to be able to easily plug in and unplug hard disk drives, particularly but not necessarily only for backup purposes. Note: This is not a hardware shopping recommendation question. Please don't vote to close it as such. Looking at different models, I find for example this page detailing the Deltaco SI-7908SUS which specifically states "storage capacity: 1.5 TB" as well as "pictured hard disk not included, only for illustration". A customer review specifically mentions that it does not work with 3 TB drives, although does not go into any detail such as OS, drive model, etc. From a brief glance, the vendor's web site does not appear to say either way. Then there is the quite similar Deltaco SI-7908B3 which boasts on the box "all 2.5" and 3.5" HDD/SSD compatible". My question is: Why would what basically amounts to a SATA/eSATA adapter have any say in what storage capacity devices are supported? Does it? Assuming the OS supports the full capacity of the drive, why should introducing another (not even a different, really) connector change anything? Bonus question: Might it make a difference if the docking station exposes multiple interfaces (such as in the case of for example the SI-7908SUS exposing USB 2.0 and eSATA)? (I still think it shouldn't, but it'd be nice to have it confirmed.)

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• Collect temperature and fan speed with munin from Windows 7 PC?

  - by nfm

  Hi, I'm quite fond of munin and using it also at home to monitor my PCs. What was super-duper easy under Linux is pretty much unsolvable for me under Windows: I'd like to monitor CPU and Motherboard temperatures as well as fan speed. On Linux I'm using lm-sensors and the plugin for munin was basically there. I access already some information from my Windows machine via SNMP (disk space, CPU usage, memory usage); the graphs are simple as is the information exposed via SNMP, but they do their job. But when it comes to temperature and fan speed I'm running against a wall. My research so far resulted in that Windows does not by default provide out of the box ability to retrieve temperature/fan speed data. Third party applications are necessary which have know-how how to communicate with the Motherboard chips. The best I cam up with is that SpeedFan exposes a shared memory interface and there exists a library which hooks into Windows SNMP facility and bridges over to SpeedFans shared memory interface; it's called SFSNMP (site currently down). Unfortunately the library doesn't work, there's a bug report at SpeedFan open about it, but it's currently not moving (although the SFSNMP author is active there) . So, unless that's going to work like anytime soon, are there any alternatives? I'm not found of buying any software to get that feature, given that I take it as granted that my system exposes me the information to properly monitor it, but anyway don't just not answer because of this.

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• Oracle Error ORA-12560 TNS:Protocol Adapter error?

  - by David Basarab

  I am using Oracle Database 10g. Both Servers are Windows 2003. I have an Orcale Database set up on one server. Here is the TNSNames.ora from the server with the database. # tnsnames.ora Network Configuration File: C:\oracle\product\10.2.0\db_1\network\admin\tnsnames.ora # Generated by Oracle configuration tools. ORCL.VIRTUALHOLD.COM = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = databaseServer)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl) ) ) The Environmental Variables on the Server are ORACLE_HOME = C:\oracle\product\10.2.0\db_1 ORACLE_SID = orcl I am trying to connect to it from another box that has Oracle Client installed. Here is the tnsnames.ora installed on the other client server. # tnsnames.ora Network Configuration File: C:\oracle\product\10.2.0\client_1\network\admin\tnsnames.ora # Generated by Oracle configuration tools. ORCL = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = databaseServer)(PORT = 1521)) ) (CONNECT_DATA = (SERVICE_NAME = orcl) ) ) ORACLE_HOME = C:\oracle\product\10.2.0\client_1 ORACLE_SID = orcl Locally on the database server I can connect to through sqlplus with no issues. On the client machine I keep getting the error: ORA-12560: TNS:protocol adapter error What am I missing? Does the client TNSNames.ora need to be different?

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• IP6 seems to be enabled - How do I configure it without interfering with IP4?

  - by Mister IT Guru

  I noticed that some of my Centos boxes have IP6 enabled, and seem to have addresses. I have no problem with this, but I would like to get a handle on it, and even connect to them using IP6. This would really help if for any reason DHCP has a hiccup. But I'm a bit lost as to where the configuration on my CentOS box is. (I am also on google researching this, but I like server fault! :) ) I am hoping that I would be able to log into this via the VPN because every now and then that DHCP device has a bad morning, and needs to be restarted. (I'm also looking into this issue, but someone else handles that, management separation gone mad!) It's a remote client, so it would be a lot easier for me to connect to these systems which seem to self configure, to use that as a pivot via ssh tunnels to get to other remote devices to continue to manage them, while out main route is fixed. I guess, my questions are How can I configure IP6 without interfering with IP4, and On CentOS, can I influence this auto configuration I seem to be seeing?

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• VMware "boot screen" - add info like contact, phone number, etc.?

  - by TheCleaner

  I've tried searching Google and VMware's KB but maybe I'm not typing the right search criteria...only finding ways to fix problems with booting or screen issues. On the default boot screen of a host it looks similar to this picture from GIS: I'm curious if it is possible somehow to make it look like this instead (adding custom details): I know for the most part the info is "useless" since it is administered remotely, etc. But when I deploy standalone hosts to branch offices, it'd be nice for them to see this type of info on the boot screen. I may also include the VMs hosted on it (again on standalone hosts). Normal monitoring, etc. will be done remotely. This is strictly for odd times when the branch contact may say "the electricians are saying they need to turn off this circuit but I have no idea who to call in IT to tell them this box needs to be shut down" or similar. Anyone who has dealt with small branch offices can tell you that if it isn't labeled they easily forget what it is for and will simply say after the incident "I didn't know what it was or who to call." Possible?

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• ubuntu 9.04 pptp broken after a power failure

  - by kevin42

  I have a small Ubuntu 9.04 router setup as a NAT box and a PPTP server. After a power failure everything except the PPTP server still works. A windows client gets to "registering your computer on the network" but then says Error 742: The remote computer does not support the required data encryption type. I did some research and I think the problem is with the ppp_mppe module. When I try to run 'modprobe ppp_mppe' it hangs indefinitely. What would cause this hang? Any ideas how I can troubleshoot this further? Thanks for the help! UPDATE: I am still having the problem, however I have found some more information. When the first user tries to connect to pptp, the process list shows modprobe sha1 running, and one instance of modprobe ppp_mppe for each connection attempt. If I killall modprobe at this point the next connection attempt works, and everything is fine until the next reboot. I'm planning to do a clean install at some point in the future but I'd really like to get to the real cause of this.

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• ACDSee alternatives for batch editing images

  - by Oxwivi

  I am looking for free, preferably open, alternatives to ACDSee for batch editing work. While I can do much of the work well on ACDSee, it's not entirely satisfactory despite having to pay for it. I need at least the following batch editing functions: Resize using either height or width and maintain aspect ration Auto contrast text overlays and occasionally, cropping oh, I make extensive use of renaming features as well Couple of issues with ACDSee are: I always need to highlight the Exposure section or auto contrast will not be done despite it being saved in the preset; and I can't define, move around the cropping box, forcing me to manually crop tons of images. I'm not an advanced, or "power photo-editor". I only require the basic stuff I described to be automated. My personal feature wish list (I'm pretty sure something so niche doesn't exist) would be text overlay based on the image names (images are named as image-1_1, image-1_2 or image-2_c1_1, image-2_c1_2, and text overlay would Image-1 and Image-2 C1 and Image-2 C2). I tried digiKam, but damn that thing is huge. It runs very slowly on my Pentium 4 and 1.5 GB RAM. On top of being a program with over 1 GB of files, the KDE library it uses is always slow regardless of it running on either Windows or Linux.

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• Updated my WAMP Server and MySQL is eating up 580mB of memory

  - by Jon

  I updated my dev-box's WAMPSERVER, and along with updating PHP and Apache, MySQL updated to '5.6.12'. After doing that, I copied the data folder from my old (5.1.36) install to the new one and now MySQL takes up 580mB which is way too much, since I'm the only person using it (Locally) and there are only 20 or so databases on it, none of which have 'memory' tables. How can I get this down to a decent amount? My my.ini: # For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html # *** DO NOT EDIT THIS FILE. It's a template which will be copied to the # *** default location during install, and will be replaced if you # *** upgrade to a newer version of MySQL. [mysqld] # Remove leading # and set to the amount of RAM for the most important data # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. # innodb_buffer_pool_size = 128M # Remove leading # to turn on a very important data integrity option: logging # changes to the binary log between backups. # log_bin # These are commonly set, remove the # and set as required. # basedir = ..... # datadir = ..... # port = ..... # server_id = ..... # Remove leading # to set options mainly useful for reporting servers. # The server defaults are faster for transactions and fast SELECTs. # Adjust sizes as needed, experiment to find the optimal values. # join_buffer_size = 128M # sort_buffer_size = 2M # read_rnd_buffer_size = 2M sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES Database info: Storage Engine Data Size Index Size Total Size InnoDB 48.00 KB 0.00 B 48.00 KB MEMORY 0.00 B 0.00 B 0.00 B MyISAM 163.64 MB 122.49 MB 286.13 MB Total 163.69 MB 122.49 MB 286.18 MB

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• Startup script for Red5 on Ubuntu 9.04

  - by user49249

  I am creating startup script for Red5 on Ubuntu. Red5 is installed in /opt/red5 Following is a working script on a CentOS Box on which Red5 is running [code] ==========Start init script ========== #!/bin/sh PROG=red5 RED5_HOME=/opt/red5/dist DAEMON=$RED5_HOME/$PROG.sh PIDFILE=/var/run/$PROG.pid # Source function library . /etc/rc.d/init.d/functions [ -r /etc/sysconfig/red5 ] && . /etc/sysconfig/red5 RETVAL=0 case "$1" in start) echo -n $"Starting $PROG: " cd $RED5_HOME $DAEMON >/dev/null 2>/dev/null & RETVAL=$? if [ $RETVAL -eq 0 ]; then echo $! > $PIDFILE touch /var/lock/subsys/$PROG fi [ $RETVAL -eq 0 ] && success $"$PROG startup" || failure $"$PROG startup" echo ;; stop) echo -n $"Shutting down $PROG: " killproc -p $PIDFILE RETVAL=$? echo [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$PROG ;; restart) $0 stop $0 start ;; status) status $PROG -p $PIDFILE RETVAL=$? ;; *) echo $"Usage: $0 {start|stop|restart|status}" RETVAL=1 esac exit $RETVAL [/code] What do I need to replace for Ubuntu in the above script. My Red5 is in /opt/red5/ and to start it manually I always do /opt/red5/dist/red5.sh from Ubuntu As I did not find rc.d/functions on Ubuntu on my laptop also /etc/init.d/functions I did not existed. I would like to be able to use them with service as Red hat distributions do. I checked /lib/lsb/init-functions.

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• Setup my domain at Whois.com as nameservers for a Dedicated Server with Kloxo

  - by BoDiE2003

  Hello, this is my first time at ServerFault, I'm a stackoverflow user. I'm faceing the next problem and may be its me, but I can't find proper guides to set up a domain and nameservers for a dedicated box. I have a domain, at whois.com, and a Dedicated server at Reliable Hosting Services, the server has 5 IPs, I know that I need 2 of them for the nameservers. Right now, my domain at whois.com is using nsX.whois.com nameservers and it has 2 child nameservers: ns1.mydomain.com & ns2.mydomain.com pointing to those 2 IPs from my Server. Whats next? I still cannot set that domain as my main server domain since it says: To map an IP to a domain, the domain must ping to the same IP, otherwise, the domain will stop working. The domain you are trying to map this IP to, doesn't resolve back to the IP, and so it cannot be set as the default domain for the IP. Well and I'm stuck on those steps, whats next to have my nameservers working and my main domain assigned to my server? Thank you very much and happy new year!!

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• Windows 7 Automatically Connecting To Unsecured Wireless Networks On Startup

  - by Xtend

  Most of the questions on this topic related to folks connecting to somebody else's wireless network when their own was available and could remedy the situation by going to their connections and unchecking the "connect automatically" box. See this: " Avoid automatically connecting to wireless network on windows 7 " as an example. In my situation, I've noticed that Win 7 will automatically connect to any unsecured wifi network - even if I have never connected to it in the past. If I am traveling and boot Win 7, it will start and connect to what appears to be the best signaled unsecured network without prompting me for confirmation (note: in the above link, "Naveen" seems to have same problem). Obviously, that is a security concern to me. Further, when I open "Network and Sharing" and "Manage wireless networks" the network is not displayed (probably because I labelled it a public network). Again, these are new, never connected with before, wireless networks. I always promptly disconnect from them but don't want to have to be on constant guard for an auto connection to a malicious network. This began about a month ago, as I recall, Win 7 did not behave like this in the past, I didn't monkey with wifi settings, and don't use a 3rd party connection manager. I did have to download some internet security certificates for army website access but I don't think that should mess with network settings. Any ideas how I can tell Win7 cease automatically connecting to networks or, at least, to prompt me for a confirmation before connecting?

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• Not getting IP from ISP on Multicast Network

  - by Johan Nielsen

  Im having an odd issue with my ISP (COMX.dk) I have a managed access gateway box (Telsay) with three 8P8C ports for use with Internet and Ip-Tv (respectively on different VLANS (so does my ISP tell me)) To utilize a port you will need to register your device's mac address through an online interface. You will then get your device paired with a static ip. I am using one port actively and I have registered another device (router). The router is configured to listen for an active dhcpd on the network. When my router get a lease I get a private ip 192.168.2.2 (not the one bound to my mac) which is odd! I unconnected my router from the gateway and connected my laptop directly. Same thing happened - I was given a private address. I did a port scan on the gateway and found port 80 to be open and browsed to the ip. I was then presented with a management interface of a Belkin wireless router (HMMM!!!!) <--by the way, not my gear At this point I called the ISP to let them know of my issue/findings - Only to be replied "Well, we cant see any rogue dhcp servers" (thinking to myself, well I can) I then decided that it could be fun to try the other port of my gateway, only to experience the same. So I reconnected my router and used the remaining port to make an observer(wireshark promic etc.) I am able to see my router trying to discover a dhcp server but I can also see my ISP's IGMP and PIMv2 packages just repeating the same pattern. Hello...Hello...Hello :) So I called them again, only to get the same response, "we dont see any rogue dhcp's...we cant see the host you are talking to (mac address of the Belkin router)...you are definitively connected through wireless?!?(no im not, no such thing as a wireless wire - i thought to myself)" My questions is, What is going on? (besides from what im reporting here) What am I seeing that the don't? What can I tell them in order for them to resolve mine/their issue?

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• Why dd finishes instantly when pipelining to cat?

  - by agsamek

  I start bash on Cygwin and type: dd if=/dev/zero | cat /dev/null It finishes instantly. When I type: dd if=/dev/zero > /dev/null it runs as expected and I can issue killall -USR1 dd to see the progress. Why does the former invocation finishes instantly? Is it the same on a Linux box? * Explanation why I asked such stupid question and possibly not so stupid question I was compressing hdd images and some were compressed incorrectly. I ended up with the following script showing the problem: while sleep 1 ; do killall -v -USR1 dd ; done & dd if=/dev/zero bs=5000000 count=200 | gzip -c | gzip -cd | wc -c Wc should write 1000000000 at the end. The problem is that it does not on my machine: bash-3.2$ dd if=/dev/zero bs=5000000 count=200 | gzip -c | gzip -cd | wc -c 13+0 records in 12+0 records out 60000000 bytes (60 MB) copied, 0.834 s, 71.9 MB/s 27+0 records in 26+0 records out 130000000 bytes (130 MB) copied, 1.822 s, 71.4 MB/s 200+0 records in 200+0 records out 1000000000 bytes (1.0 GB) copied, 13.231 s, 75.6 MB/s 1005856128 Is it a bug or am I doing something wrong once again?

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• Wake on Demand for Apache server in OS X 10.8

  - by Gary

  Mac OS X Mountain Lion does not have a Web Sharing box in the Sharing system prefs menu. It is thoroughly discussed on the web that the Apache server is available, and that it can be turned on manually in the command line, or by using a convenient Prefs Pane. That works while the computer is awake. But, when my computer goes to sleep, the server stops working, even though Wake for Network Access is checked in the Energy Saver Pref Pane. From the discussion on Bonjour, I see that this problem probably results from the fact that Apache isn't registered with Bonjour. Does that sound likely? If not, please make some suggestions. The connection is via hard-wired ethernet. If registration with Bonjour is the problem, I'd like to know how to register it. You gave a nice description of dns-sd, and the command description says dns-sd -R Name Type Domain Port [TXT...] (Register a service)", but I don't know what to use for "Name" or "Type", or the format of the domain. I tried some dns-sd -B searches and found nothing I could use as a model, and it doesn't show up in Bonjour Browser. Any suggestions would be appreciated.

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• Windows 2003 DC to Windows 2008 R2 DC with same name and same IP

  - by TheCleaner

  Environment = Windows 2003 native domain with 8 DCs I've got an old domain controller that is running 2003, CA Enterprise role, DHCP, DNS, a few GPO scripts that point to shares on it, and some other minor functions. All our servers point to it as their primary DNS, and there's lots of references to its IP or name throughout the domain at this point (8+ years later). I really don't feel like manually changing all of this, it would be a pretty massive undertaking. I want to follow this guide: http://msmvps.com/blogs/acefekay/archive/2010/10/09/remove-an-old-dc-and-introduce-a-new-dc-with-the-same-name-and-ip-address.aspx to hopefully end up with basically an "in-place upgrade" so to say. I considered just doing a P2V of the box, but we don't really want to keep it around running 2003 to be honest. I also considered using a CNAME and adding a 2nd IP (the old one) but again, it seemed like it would be cleaner using the attached link. My actual question: Any gotchas or big caution signs when doing what the link suggests? Anyone gone down this road and have advice on how to proceed?

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• Load is 0, yet site crawls (sometimes). What gives?

  - by Yegor

  I have a ~1.5-2mil page views per day site running on 2 servers. One for mysql, other for everything else. Mysql box has a load of 3, frontend is usually 0.0-0.1. Both are dual quad core with 8GB ram running SAS drives in raid5. CPU is idle for majority of the time, iowait is non-existent. Im running nginx, memcache, and site is built on php. Half the time everything runs perfect, while at other times it lags something severe, when it takes 10-15 seconds for a page to load. Page execution time is always super low, but it seems to hang, waiting for something before it actually loads the page. Whats even more weird is that it only happens to 1 file on the site (but its the one thats most commonly accessed, that actually loads the content on the site). Other pages are super fast at all times, even when it takes 15 seconds to load actual content. I have nginx_stats plugin installed, and if I monitor it, the lag spikes happen when the write column starts going above 100, and it frequently does... all the way to 500-1000. It does so at totally random times... not when traffic is heavy... it can do this in the middle of the night, and work perfectly at 5pm when traffic is at its highest. Any ideas?

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• setting up tracd behind mod_proxy?

  - by FilmJ

  I'm having trouble setting up mod_proxy and tracd. Seems almost all the search results for this problem take me to the built-in trac documentation page that mentions it as an option. I have several VirtualServers already running on the box in question, so running tracd on port 80 or 443 is not an option, but I do want to make my trac server accessible on this machine without exposing an additional port via the firewall. Making things even more complicated is that I have multiple trac repositories being served by the same instance of tracd, and so I want to set it up so: http://trac.abc.com is proxy'd to localhost:8000/projects/abcproject, and http://trac.def.com is proxy'd to localhost:8000/projects/defproject. Currently, the setup I have below results in 100% 403 errors. The server is running as www-data and the directory where all trac files are stored is owned by www-data, AND tracd (as show below) is running as www-data, so not sure where it's getting hung up. The relevant configuration on /var/apache2/sites-enabled/trac.abc.com: ProxyPass / http://localhost:8000/abcproject ProxyPassReverse / http://localhost:8000/abcproject The relevant configuration on /var/apache2/sites-enabled/trac.def.com: ProxyPass / http://localhost:8000/defproject ProxyPassReverse / http://localhost:8000/defproject The command used to instantiate tracd: tracd -a defproject,/var/www/vhosts/trac-common/users.htdigest,DEFProject -a abcproject,/var/www/vhosts/trac-common/users.htdigest,ABCProject -p 8000 -b localhost -e /var/www/vhosts/trac-common/projects If I access the site at http://localhost:8000/ everything works fine, but if I try to access via any of the proxy'd hosts I end up with 403 at every turn. I've used mod_proxy successfully as described above for other servers, such as couchdb, so maybe this has to do with the headers sent by tracd??

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• Server 2008 RAID 5 Write Speeds

  - by Solipsism

  I recently configured a RAID 5 partition in Server 2008 with 4 RAID 5 disks. These disks are connected through a SATA expansion card that uses PCIe. This morning, I checked and they had finally finished synchronizing, and so I tried to do some speed tests. Copying off the disks started pretty much fine - speeds began at 125MB/s, then trailed down to about 70MB/s, which I found odd but not worrying. Writing TO the disks however is a completely different story. I attempted to copy some of my VM host ISOs onto the disks (~2-4 GB apiece) and this resulted in speeds of approximately 10MB/s. I tried copying both from a local disk (connected directly to the motherboard) and from another server ththe gigabit network and results were the same. I checked the performance monitor while transferring the files and the only thing that stuck out was that my memory hard faults shot up to 6,000 per minute (spiking around 200/s) by explorer.exe. The system is running 2GB of DDR667 ECC RAM and a quad-core 2.3GHz opteron. Is there anything I can do to fix this performance issue (buy more RAM? move the drives to a faster box?, etc) or am I just screwed so long as I stick to windows.

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• Windows desktop virutalization instead of replacing work stations

  - by Chris Marisic

  I'm head of the IT department at the small business I work for, however I am primarily a software architect and all of my system administration experience and knowledge is ancillary to software development. At some point this year or next we will be looking at upgrading our workstation environment to a uniform Windows 7 / Office 2010 environment as opposed to the hodge podge collection of various OEM licensed editions of software that are on each different machine. It occurred to me that it is probably possible to forgo upgrading each workstation and instead have it be a dumb terminal to access a virutalization server and have their entire virtual workstation hosted on the server. Now I know basically anything is possible but is this a feasible solution for a small business (25-50 work stations)? Assuming that this is feasible, what type of rough guidelines exist for calculating the required server resources needed for this. How exactly do solutions handle a user accessing their VM, do they log on normally to their physical workstation and then use remote desktop to access their VM, or is it usually done with a client piece of software to negotiate this? What types of software available for administering and monitoring these VM's, can this functionality be achieved out of box with Microsoft Server 2008? I'm mostly interested in these questions relating to Server 2008 with Hyper-V but fell free to offer insight with VMware's product line up, especially if there's any compelling reasons to choose them over Hyper-V in a Microsoft shop. Edit: Just to add some more information on implementation goals would be to upgrade our platform from a Win2k3 / XP environment to a full Windows 2008 / Win7 platform without having to perform any of that associated work with our each differently configured workstation. Also could anyone offer any realistic guidelines for how big of hardware is needed to support 25-50 workstations virtually? The majority the workstations do nothing except Office, Outlook and web. The only high demand workstations are the development workstations which would keep everything local.

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• Certificate enrollment request chain not trusted

  - by makerofthings7

  I am working on a MSFT lab for Direct Access, and need to create a Web certificate. The instructions ask be to do the following: On EDGE1, click Start, type mmc, and then press ENTER. Click Yes at the User Account Control prompt. Click File, and then click Add/Remove Snap-ins. Click Certificates, click Add, click Computer account, click Next, select Local computer, click Finish, and then click OK. In the console tree of the Certificates snap-in, open Certificates (Local Computer)\Personal\Certificates. Right-click Certificates, point to All Tasks, and then click Request New Certificate. Click Next twice. On the Request Certificates page, click Web Server, and then click More information is required to enroll for this certificate. On the Subject tab of the Certificate Properties dialog box, in Subject name, for Type, select Common Name. In Value, type edge1.contoso.com, and then click Add. Click OK, click Enroll, and then click Finish. In the details pane of the Certificates snap-in, verify that a new certificate with the name edge1.contoso.com was enrolled with Intended Purposes of Server Authentication. Right-click the certificate, and then click Properties. In Friendly Name, type IP-HTTPS Certificate, and then click OK. Close the console window. If you are prompted to save settings, click No. In production, our company has overridden the Web Server template and it doesn't seem to be issuing certificates with the full CA chain. When I look at the issued certificate properties then both tiers of the 2 tier CA hierarchy are missing. How can I fix this? I'm not sure where to look outside the GUI.

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• SQL Server performance on VSphere 4.0

  - by Charles

  We are having a performance issue that we cannot explain with our VMWare environment and I am hoping someone here may be able to help. We have a web application that uses a databases backend. We have an SQL 2005 Cluster setup on Windows 2003 R2 between a physical node and a virtual node. Both physical servers are identical 2950's with 2x Xeaon x5460 Quad Core CPUs and 64GB of memory, 16GB allocated to the OS. We are utilizing an iSCSI San for all cluster disks. The problem is this, when utilizing the application under a repeated stress testing that adds CPUs to the cluster nodes, the Physical node scales from 1 pCPU to 8 pCPUs, meaning we see continued performance increases. When testing the node running Vsphere, we have the expected 12% performance hit for being virtual but we still scale from 1 vCPU to 4 vCPUs like the physical but beyond this performance drops off, by the time we get to 8 vCPUs we are seeing performance numbers worse than at 4 vCPUs. Again, both nodes are configured identically in terms of hardware, Guest OS, SQL Configurations etc and there is no traffic other than the testing on the system. There are no other VMs on the virtual server so there should be no competition for resources. We have contacted VMWare for help but they have not really been any suggesting things like setting SQL Processor Affinity which, while being helpful would have the same net effect on each box and should not change our results in the least. We have looked at all of VMWare's SQL Tuning guides with regards to VSphere with no benefit, please help!

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• Windows Media Center showing Jerky Video on PC

  - by Kris Erickson

  I had to repave my Windows 7 x64 box last week due to a hard drive crash, and for a while everything was running perfectly but now all videos in Windows Media Center are jerky (the sound is fine, they just seem to skip a ton of frames all the time). This is on the local machine, but the same thing happens when I try to stream to my Xbox. The videos all show fine in VLC and Windows Media Player (however exhibit the same problem in Quicktime). I guess I must have installed something recently (in the process of getting all the apps I usually have running on my PC) that caused this but for the life of me I can't figure it out. I have updated to the latest video driver (and then rolled back to the standard Windows 7 driver), I have rolled back all the other drivers that I have installed (I believe). I have uninstalled all the codec packs (I also run TVersity, so I have the TVersity codec pack installed), and I uninstalled TVersity. Nothing seems to help. I have uninstalled windows media center, and reinstalled it from the Programs and Features. I have basically ran out of things to try to fix this, and am almost thinking about reinstalling Windows again. Any suggestions? Edit Specs on the PC (which I figured was unimportant since everything used to work perfectly): Intel Core 2 CPU 6600 @ 2.4 Ghz Nvidia GTS 8800 Built in realtek-audio soundcard 4GB Ram Codecs which are failing: All that I have tried, but at least Xvid, Mpgv (mpeg2 video from a camera), and Wmv (only kinds that I have ready access to).

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• Varnish with multiple sites/boxes

  - by jerhinesmith

  Is it possible for Varnish to redirect traffic to different IPs based on the url? For example, is the following setup feasible (and if so, what would the VCL look like): *.example.com points to Varnish IP address When a request is made to foo.example.com, varnish checks the cache and sends the request to Server1's IP address on a cache miss. When a request is made to bar.example.com, varnish checks the cache and sends the request to Server2's IP address on a cache miss. foo and bar are (for the most part) completely unrelated sites. They use the engine, but have different content and their own distinct database. Since there previously was no penalty for doing so (other than cost) we split them up into two separate boxes so that a ton of traffic to foo won't have a negative impact on visitors browsing around bar. I could set up two instances of varnish and have one serve up foo's static content and the other serve up bar's, but as there doesn't seem to be much overhead to running Varnish, I think (perhaps mistakenly) that it would make more sense to go with one Varnish server that redirects the traffic to the appropriate box on a cache miss.

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