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• Deploy binary hex registry via GPO or PowerShell

  - by Prashanth Sundaram

  I am trying to deploy a custom registry entry which I exported from a test machine. It looks like below. I came across THIS similar request on another site, but I couldn't make it to work. "TextFontSimple"=hex:3c,00,00,00,1f,00,00,f8,00,00,00,40,dc,00,00,00,00,00,00,\ 00,00,00,00,ff,00,31,43,6f,75,72,69,65,72,20,4e,65,77,00,00,00,00,00,00,00,\ 00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00 As per the other solution, my PS command below, throws error."A parameter cannot be found that matches parameter name" Set-ItemProperty -Path "HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\MailSettings" -Name "TextFontSimple" -PropertyType Binary -Value ([byte[]] (0x3c,0x00,0x00,0x00,0x1f....0x00)) Any ideas? ====EDIT===== The key & value already exists. When I use Get-ItemProperty PSPath : Microsoft.PowerShell.Core\Registry::HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\MailSettings PSParentPath : Microsoft.PowerShell.Core\Registry::HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common PSChildName : MailSettings PSProvider : Microsoft.PowerShell.Core\Registry TextFontSimple : {60, 0, 0, 0...}

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• To Delete a tape from the ACSLSlibrary

  - by Senthil Kumar

  Hi Anyone there can help me out for an issue as below: There was a stuck tape in the drive and so the stuck tape was removed, but i need to logically delete the tape entry from NB, so that the same media can be inserted back for operations. Netback thinks that the tape is still in that location, hence it should be removed so that the entry is not there and NB does not recognise that the tape in that location, so the same tape can be taken in through inventory. The NB used is NB5.1 Any command to delete this entry, this is a clustered based Environment (Active/Passive), and we use a ACSLS library (Physical) as well a Switch-SN6000(Logical) Kindly help me out as when we tried to delete the media from GUI it said- Could not delete- Cannot delete assigned volume (92).

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• Choosing the right email server.

  - by bernard-productions

  My company is switching email servers and I wanted more input from people who know more about IT. We are a small company that would only have 7-8 users. We use MS outlook and need a compatible solution. Im not sure what server we are switching from but i have been looking at google apps. Exchange is a little more expensive but we are considering that as well. Any suggestions/ recommendations regarding these two or others????

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• Apache (Solaris 10): 2 symlinks to the same file, one works the other doesn't

  - by justcatchingrye

  I'm seeing a strange issue with Apache I have a system that pulls a configuration file from a web server. I want to use a symlink with the name 'ocds-dpsarch01a.rules'. This doesn't work. However, if I change one character in that name and link it to the same file, it works - See below I can't think of any reason why one symlink would work when another doesn't? I would have thought either the Apache configuration is right and all symlinks work, or it isn't and no syslinks work(?) Any thoughts welcome ls -l /REMOVED/apache2/htdocs/rules/syslog/*cds-dpsarch01a.rules lrwxrwxrwx 1 root root 62 May 13 13:55 ocds-dpsarch01a.rules - /REMOVED/apache2/htdocs/templates/syslog/DCM_SST_DPST_01.rules lrwxrwxrwx 1 root root 62 May 13 13:52 xcds-dpsarch01a.rules - /REMOVED/apache2/htdocs/templates/syslog/DCM_SST_DPST_01.rules 1) Application starting and successfully reading configuration from the web server 13/05/2010 13:56:37: Information: Connecting ... 13/05/2010 13:56:37: Debug: Reading REMOVED:// REMOVED /rules/syslog/xcds-dpsarch01a.rules 13/05/2010 13:56:37: Debug: HTTP response: HTTP/1.1 200 OK Date: Thu, 13 May 2010 13:56:34 GMT Server: Apache Last-Modified: Fri, 09 Apr 2010 12:28:26 GMT ETag: "5073-a744-ee92ae80" Accept-Ranges: bytes Content-Length: 42820 Cache-Control: max-age=5 Expires: Thu, 13 May 2010 13:56:39 GMT NL7C-Filtered: Content-Type: text/plain Connection: close 13/05/2010 13:56:37: Debug: Plain text rules file detected. 2) Application starting and failing to read configuration from the web server 13/05/2010 13:56:55: Information: Connecting ... 13/05/2010 13:56:55: Debug: Reading REMOVED :// REMOVED /rules/syslog/ocds-dpsarch01a.rules 13/05/2010 13:56:55: Debug: HTTP response: HTTP/1.1 403 Forbidden Date: Wed, 12 May 2010 15:25:11 GMT Server: Apache Vary: accept-language,accept-charset Accept-Ranges: bytes Connection: close Content-Type: text/html; charset=iso-8859-1 Content-Language: en Expires: Wed, 12 May 2010 15:25:11 GMT 13/05/2010 13:56:55: Error: HTTP: HTTP/1.1 403 Forbidden Date: Wed, 12 May 2010 15:25:11 GMT Server: Apache Vary: accept-language,accept-charset Accept-Ranges: bytes Connection: close Content-Type: text/html; charset=iso-8859-1 Content-Language: en Expires: Wed, 12 May 2010 15:25:11 GMT 13/05/2010 13:56:55: Error: HTTP GET failed 13/05/2010 13:56:55: Error: Failed to open Rules file: REMOVED :// REMOVED /rules/syslog/ocds-dpsarch01a.rules

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• Customizable mail server - what are my options? [closed]

  - by disappearedng

  This question was originally on SO but it was closed since it is considered off topic. I am interested to build a mail service that allows you to incorporate custom logic in the your mail server. For example, user A can reply to [email protected] once and subsequent emails from user A to [email protected] will not go through until certain actions are taken. I am looking for something simple and customizable, preferably open-sourced. I am fluent in most modern languages. What email servers do you guys recommend for this? Mailgun looks promising, but are there any simpler options?

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• MSDTC - Communication with the underlying transaction manager has failed (Firewall open, MSDTC network access on)

  - by SocialAddict

  I'm having problems with my ASP.NET web forms system. It worked on our test server but now we are putting it live one of the servers is within a DMZ and the SQL server is outside of that (on our network still though - although a different subnet) I have open up the firewall completely between these two boxes to see if that was the issue and it still gives the error message "Communication with the underlying transaction manager has failed" whenever we try and use the "TransactionScope". We can access the data for retrieval it's just transactions that break it. We have also used msdtc ping to test the connection and with the amendments on the firewall that pings successfully, but the same error occurs! How do i resolve this error? Any help would be great as we have a system to go live today. Panic :) Edit: I have created a more straightforward test page with a transaction as below and this works fine. Could a nested transaction cause this kind of error and if so why would this only cause an issue when using a live box in a dmz with a firewall? AuditRepository auditRepository = new AuditRepository(); try { using (TransactionScope scope = new TransactionScope()) { auditRepository.Add(DateTime.Now, 1, "TEST-TRANSACTIONS#1", 1); auditRepository.Save(); auditRepository.Add(DateTime.Now, 1, "TEST-TRANSACTIONS#2", 1); auditRepository.Save(); scope.Complete(); } } catch (Exception ex) { Response.Write("Test Error For Transaction: " + ex.Message + "<br />" + ex.StackTrace); }

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• cassandra node discovery

  - by eQuiNoX__

  I just set up a 3 node system with ip addresses "192.168.0.101", "192.168.0.102", "192.168.0.103". I have set the seeds value on the configuration of all three machines as seeds: "192.168.0.101,192.168.0.102,192.168.0.103" However, on running nodetool on any of them, only the 103 machine gets discovered. node101:/opt/cassandra/apache-cassandra-0.8.5/bin# ./nodetool ring -h 192.168.0.101 Address DC Rack Status State Load Owns Token 192.168.0.103 datacenter1 rack1 Up Normal 151.96 KB 100.00% 38174485210079977599903748344879358256 Could someone tell me where the problem lies?

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• Databases supporting parallel processing across multiple servers

  - by David

  I need a database engine that can utilize multiple servers for processing a single SQL query in parallel. So far I know that this is possible with the some engines, though none of them are feasible for me either because of pricing or missing features. The engines currently known to me are: MS SQL (enterprise) DB2 (enterprise) Oracle (enterprise) GridSQL Greenplum

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• Digest authentication not working: endless cycles of asking for user/pass

  - by bcmcfc

  I'm trying to setup my SVN repository for access remotely. In doing so I have some settings under Apache's dav_svn.conf file. When navigating to hostname/svn, or using Tortoise to do the same it prompts for the user name and password as expected. However, when entering the correct user name and pass that were set in the password file linked to under AuthUserFile it just asks for the credentials again. I think I'm probably missing something simple? The server is running Ubuntu Server 9.10. Accessing SVN remotely does currently work if the authentication lines of dav_svn.conf are commented out. These are the contents of the dav_svn.conf file: <Location /svn> DAV svn SVNPath /home/svn/repo AuthType Digest AuthName "Subversion Repository" AuthDigestDomain /svn/ AuthUserFile /etc/svn_authfile Require valid-user </Location>

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• VSS Not Creating Shadow Set

  - by Jeff Leyser

  I'm trying to setup backup scripts on WinXP to use Volume Shadow Sets. I downloaded the VSS 7.2 SDK from MSFT, and used the include vshadow.exe to create a shadow set: vshadow -script=vss-setvar.cmd f: (note that I've tried both f: and c:) vshadow executes just find, giving no errors, reporting the shadow is created. However, executing vshadow -q as the very next command results in "There are no shadows on the system" and, indeed, if I use dosdev to try and map the Shadow set named in vss-setvar.cmd, it will not work. Am I missing a step?

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• Where is the bottleneck?

  - by jsymon

  There is a limit on connections somewhere along the line here... On a windows server 2008 machine, each request to a url running on localhost takes ~3 seconds to complete. This is fine and normal for the url. However, if i open the same localhost url in about 10 tabs, and set them to reload all at the same time, they finish sequentially, 3 seconds after each other. Meaning the last tab has taken 30 seconds to load (3s x 10). What is especially odd is that firebug reports each page as taking 3seconds to load. Another point to add is that the status bar just sits at 'done' for the last tab until 3 seconds before completing, where it then changes to 'waiting for localhost'. I am praying there is some connection limit somewhere otherwise this would be a disaster if more than one user ever visited the site at a time! Maybe a limit or something where one pc cant make more than 2 simultaneous requests to a url at a given time?

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• Looking for QNX compatible server hardware

  - by Sergey Sobolev

  Can you help me to find compatible modern server for QNX, please? This is quite rare OS, so most of the hardware vendors do not have compatibility information. It would be very helpful to me if you can do the following: Download iso http://www.qnx.com/download/download/19602/qnxsdp-6.4.1-x86-200905201802-nto.iso burn to cd Start from cd press F2 - try from CD start Utilities/Terminal run sloginfo /tmp/sloginfo.log; get_hw_info; pci -vvv /tmp/pci-vvv.log send logs from /tmp/ to [email protected] with system model/build I will summarize results afterwards and post them here. I'm especially interested in Fujitsu RX100 S5 as it looks like one of the most compatible servers with frontally accessible HDDs.

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• Can a Shadow Copy of SQL 2000 databases files be used as a restore?

  - by Keith Sirmons

  Howdy, I have a SQL 2000 instance (version 8.00.760) that is on a drive that gets regular shadow copies. Can a shadow copy be used to restore the database? It seems possible to stop the SQL service, restore the Data folder from the shadow copy (includes msdb, master, model, temp, and the user databases, then restart the service. Would the files be in a crash consistent case in the worst case? If so, when restarting the service wouldn't it recover as if the power were pulled from the server? Thank you, Keith

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• Best way to monitor a Grid of computers?

  - by marc.riera

  I've installed Sun Grid Engine on 10 nodes, and one virtual master host. Now I have to monitor all the resources prior to launching it into production, but I don't know which is the best way. I've tried using xml-qstat, but it seems unstable. Any tips or suggestions? Anyone got experience on this? thanks.

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• Best practices for SQL Server audit trail

  - by Ducain

  I'm facing a situation today where it would be very beneficial to me and my company if we knew who had logged into SQL and performed some deletions. We have a situation where at least 2 (sometimes 3) people login to SQL using SQL Server Management Studio, and perform various functions. What we need is an audit trail. If someone deletes records (mistakenly or otherwise), I'd like to know what was done. Is there any way to make this happen?

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• Suggest me solution to track the change in test DB and replicate in Another DB

  - by Pranav

  Suggest me solution to track the change in test DB and replicate in Another DB... My Client need a script or any solution, if he has two Database, One Test DB in which he tests his data on test portal and if he find it appropriate he can use those changes to be done in main DB to display on Live site.. Fior this he needs the solution to record or track all updation/deletion/insertion, so that he can do the same in main DB if found appropriate, NOTE: we have only one server, no separate server, hence binary log replication doesnt seems to be working for my case..

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• Ubuntu 10.04 LTS - good enough to jump on it?

  - by iconiK

  I'm currently planning to get a VPS from VPS.net for a PHP project. I personally haven't used CentOS (which is recommended all the time) and this is not a good time for me to start learning it, so I want to stick with Ubuntu, as that's the one I have experience with. Now there's the good ol' 8.04 LTS that's well supported, however, 10.04 LTS was released two days ago. I installed it on my laptop and it is pretty slick (doesn't matter for a server) and quick. But I am skeptical about it: Has anyone tried it in a production environment so far? How does it perform versus 8.04? Any serious bugs so far?

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• Configure apache to reverse proxy for specific name

  - by Phrogz

  I have a working intranet server that: Properly serves some content from http://hqmktgwb01/ Is currently properly configured to reverse proxy from http://hqmktgwb01/dashstats to a round-robin of localhost:3000 - localhost:3003 Also has the DNS name dashstats (going to the same IP) The current working configuration file can be found here: http://pastie.org/1426082 I would like to modify the configuration so that:    4. http://dashstats/ performs the same reverse proxying http://hqmktgwb01/dashstats. I (naively) modified the config like this: http://pastie.org/1426047 (added lines 90-98) but this is not a valid Apache config. Please help me to modify the original config file to accomplish 1-4 above.

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• Apple XRaid questions

  - by luckytaxi

  I inherited an environment with a couple of apple xraid san. 1 - I have a 14 drive setup that's split into 5 LUNs on EACH side. The SAN goes into a fibre switch along w/ the servers that are attached to it. LUN masking is enabled on the SAN and as far as I know, there aren't any zoning on the fibre switch. Question, I have a server that's assigned two LUNs, one from each side of the controller. For some reason, it only sees one LUN (from the upper controller) and it doesn't see the one from the lower controller. The controller seems to be working fine as I have other servers attached to LUNs on the lower controller. 2 - I see a little "disclaimer" saying that any changes to the xraid will result in a reboot. So, if I add/remove hosts, this thing is going to reboot?!?!?!

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• Debian server doesn't free memory after backup

  - by stan31337

  I have production server that is running Debian 6.0.6 Squeeze #uname -a Linux debsrv 2.6.32-5-xen-amd64 #1 SMP Sun Sep 23 13:49:30 UTC 2012 x86_64 GNU/Linux Every day cron executes backup script as root: #crontab -e 0 5 * * * /root/sites_backup.sh > /dev/null 2>&1 #nano /root/sites_backup.sh #!/bin/bash str=`date +%Y-%m-%d-%H-%M-%S` tar pzcf /home/backups/sites/mysite-$str.tar.gz /var/sites/mysite/public_html/www mysqldump -u mysite -pmypass mysite | gzip -9 > /home/backups/sites/mysite-$str.sql.gz cd /home/backups/sites/ sha512sum mysite-$str* > /home/backups/sites/mysite-$str.tar.gz.DIGESTS cd ~ Everything works perfectly, but I notice that Munin's memory graph shows increase of cache and buffers after backup. Then I just download backup files and delete them. After deletion Munin's memory graph returns cache and buffers to the state that was before backup. Here's Munin graph: Unfortunately I don't have enough rep to add image here. So here's a link:

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• Unix Server Partitioning & Filesystem Layout

  - by user1717735

  There's a lot of contradictory information about Unix server partitioning out on the internet, so I need some advice on how to proceed. So far, on the servers I in our test environment I didn't really care about partitioning and I configured a single monolithic / plus a swap partition. This partitioning scheme doesn't seem like a good idea for our production servers. I have found a good starting point here, but it seems very vague on the details. Basically I have a server on which I will be running a basic LAMP stack (Apache, PHP, and MySQL). It will have to handle file uploads (up to 2GB). The system has a 2TB RAID 1 array. I plan to set : / 100GB /var 1000GB (apache files and mysql files will be here), /tmp 800GB (handles the php tmp file) /home 96GB swap 4GB Does this sound sane, or am I over-complicating things?

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• Varnish 3.0.2 to Apache2 sometimes return error 503

  - by Ronnie Jespersen

  Hey guys I hope you can help me out here. I have an Ngingx parsing http and https to a varnish cache(3.0.2). From the varnish it is sent to apache2. Now I have for some time been tracking some strange 503 errors. But I cant seem to find the silver bullet. Currently I am logging the 503 errors through varnish this way: sudo varnishlog -c -m TxStatus:503 >> /home/rj/varnishlog503.log and then referring to the apache access log to see if any 503 requests have been handled. Today I had a health check from the firewall that failed: 20 SessionOpen c 127.0.0.1 34319 :8081 20 ReqStart c 127.0.0.1 34319 607335635 20 RxRequest c HEAD 20 RxURL c /health-check 20 RxProtocol c HTTP/1.0 20 RxHeader c X-Real-IP: 192.168.3.254 20 RxHeader c Host: 192.168.3.189 20 RxHeader c X-Forwarded-For: 192.168.3.254 20 RxHeader c Connection: close 20 RxHeader c User-Agent: Astaro Service Monitor 0.9 20 RxHeader c Accept: */* 20 VCL_call c recv lookup 20 VCL_call c hash 20 Hash c /health-check 20 VCL_return c hash 20 VCL_call c miss fetch 20 Backend c 33 aurum aurum 20 FetchError c http first read error: -1 11 (No error recorded) 20 VCL_call c error deliver 20 VCL_call c deliver deliver 20 TxProtocol c HTTP/1.1 20 TxStatus c 503 20 TxResponse c Service Unavailable 20 TxHeader c Server: Varnish 20 TxHeader c Content-Type: text/html; charset=utf-8 20 TxHeader c Retry-After: 5 20 TxHeader c Content-Length: 879 20 TxHeader c Accept-Ranges: bytes 20 TxHeader c Date: Wed, 06 Jun 2012 12:35:12 GMT 20 TxHeader c X-Varnish: 607335635 20 TxHeader c Age: 60 20 TxHeader c Via: 1.1 varnish 20 TxHeader c Connection: close 20 Length c 879 20 ReqEnd c 607335635 1338986052.649786949 1338986112.648169994 0.000160217 59.997980356 0.000402689 Now the backend server (apache) does not have any 503 error in the access log at this point. So I am confused. Is this varnish throwing a 503 because it thinks apache is to slow? There is a lot traffic coming through at this point so I know the server is up and running. I do have other 503 error codes with posts and gets so there is really no pattern. It seems to be at random times and random requests. Even in the morning when the server dosen't seem to be doing anything. I do see another pattern in the log: 4 VCL_call c recv pass 4 VCL_call c hash 4 Hash c /?id=412 4 VCL_return c hash 4 VCL_call c pass pass 4 FetchError c no backend connection 4 VCL_call c error deliver 4 VCL_call c deliver deliver Here fetcherror says "no backend connection". A summery of the FetchErrors in todays log: 16 FetchError c http first read error: -1 11 (No error recorded) 5 FetchError c http first read error: -1 11 (No error recorded) 4 FetchError c http first read error: -1 11 (No error recorded) 19 FetchError c http first read error: -1 11 (No error recorded) 5 FetchError c http first read error: -1 11 (No error recorded) 23 FetchError c http first read error: -1 11 (No error recorded) 24 FetchError c http first read error: -1 11 (No error recorded) 16 FetchError c http first read error: -1 11 (No error recorded) 6 FetchError c http first read error: -1 11 (No error recorded) 4 FetchError c http first read error: -1 11 (No error recorded) 5 FetchError c http first read error: -1 11 (No error recorded) 4 FetchError c http first read error: -1 11 (No error recorded) 4 FetchError c http first read error: -1 11 (No error recorded) 22 FetchError c http first read error: -1 11 (No error recorded) 6 FetchError c http first read error: -1 11 (No error recorded) 21 FetchError c http first read error: -1 11 (No error recorded) 26 FetchError c no backend connection 4 FetchError c no backend connection 20 FetchError c http first read error: -1 11 (No error recorded) 39 FetchError c http first read error: -1 11 (No error recorded) I haven't changed the default timeout values for varnish. This is my configuration for one of the backend servers. backend xenon { .host = "192.168.3.187"; .port = "80"; .probe = { .url = "/health-check/"; .interval = 3s; .window = 5; .threshold = 2; } } I'm running prefork module on apache2 with this configuration <IfModule mpm_prefork_module> StartServers 1 MinSpareServers 2 MaxSpareServers 5 MaxClients 200 MaxRequestsPerChild 75 </IfModule> and only PHP files is sent to the server. Every other static file is handled by Nginx. Any ideas? ------- EDIT -------------- Some more debuging information I have run a varnishadm debug.health Backend radon is Healthy Current states good: 5 threshold: 2 window: 5 Average responsetime of good probes: 0.002560 Oldest Newest ================================================================ 4444444444444444444444444444444444444444444444444444444444444444 Good IPv4 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Good Xmit RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR Good Recv HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH Happy Backend xenon is Healthy Current states good: 5 threshold: 2 window: 5 Average responsetime of good probes: 0.002760 Oldest Newest ================================================================ 4444444444444444444444444444444444444444444444444444444444444444 Good IPv4 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Good Xmit RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR Good Recv HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH Happy Backend iridium is Healthy Current states good: 5 threshold: 2 window: 5 Average responsetime of good probes: 0.000849 Oldest Newest ================================================================ 4444444444444444444444444444444444444444444444444444444444444444 Good IPv4 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Good Xmit RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR Good Recv HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH Happy Backend aurum is Healthy Current states good: 5 threshold: 2 window: 5 Average responsetime of good probes: 0.002100 Oldest Newest ================================================================ 4444444444444444444444444444444444444444444444444444444444444444 Good IPv4 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Good Xmit RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR Good Recv HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH Happy And I have been monitoring varnishstat from the two load balancers 3224774 3.99 2.61 backend_conn - Backend conn. success 27 0.00 0.00 backend_unhealthy - Backend conn. not attempted 63 0.00 0.00 backend_fail - Backend conn. failures 358798 0.00 0.29 backend_reuse - Backend conn. reuses 21035 0.00 0.02 backend_toolate - Backend conn. was closed 379834 0.00 0.31 backend_recycle - Backend conn. recycles 26 0.00 0.00 backend_retry - Backend conn. retry 3217751 5.99 2.61 backend_conn - Backend conn. success 32 0.00 0.00 backend_fail - Backend conn. failures 364185 0.00 0.30 backend_reuse - Backend conn. reuses 27077 0.00 0.02 backend_toolate - Backend conn. was closed 391263 0.00 0.32 backend_recycle - Backend conn. recycles 36 0.00 0.00 backend_retry - Backend conn. retry Notice that none of them have reported backend_fail. /Ronnie

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• How to define a layered model for Storage Architecture ?

  - by Berkay

  i don't have enough knowledge about storage systems but have to tell my audiences about how storage works in organization data centers. For this purpose to keep things simple, first i want to show them a layer model then from top to bottom and then i want to explore all these layers. What i mean by layered model in storage architecture? i want to start my presentation something like that, first layer can be applications, application request a data from storage and then ... ... (the topics i want to cover are file sytems, metadata,the physical implementation of storage (das, nas etc.) ... the request comes to the storage device and storage device (depends on the technology) goes through the disk and disk send back the data using iscsi protol, we can say that the iscsi protocol managing the path between... ... if you help me explain these steps layer by layer by examples and key technologies to be defined, really appreciate it. thanks.

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• Has anyone got Hamachi 2 working on EC2 Windows instances?

  - by Khash

  I have it running and can see the EC2 instance with a direct tunnel. However, I can't ping the EC2 instance nor can I browse the shared folders. I am sure of the following: - File sharing service is running - Folders are shared I have tried the following: - Turning Windows firewall off - Allowing all TCP and UDP ports and ICMP through Amazon EC2 group policy firewall The instance is a Windows 2008 DataCentre 32-bit.

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• ssh connection slow when using @hostname.com but now when using @ipaddress

  - by Alex Recarey

  When connecting to a Debian server using ssh, if I use [email protected] (the IP address of hte server) the connection is instant. If however I use [email protected] (a DNS redirected to the IP address of the server) the ssh connection hangs for a 20 seconds before connecting successfully. The ssh logs show the following: [alex@alex home]$ ssh -v -v [email protected] OpenSSH_5.5p1, OpenSSL 1.0.0c-fips 2 Dec 2010 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 and here it hangs during 20 seconds before continuing. I think it might have something to do with reverse DNS or similar (the server does not really "know" it's name is hostname.com, it just has that DNS rediriected to its IP address). I have added the following options to /etc/ssh/sshd_config: UseDNS no GSSAPIAuthentication no to no effect. The server's DNS records in /etc/resolv.conf are configured correctly: ping hostname.com PING sub.domain.com (X.X.X.X) 56(84) bytes of data. 64 bytes from replicant (X.X.X.X): icmp_seq=1 ttl=64 time=0.029 ms 64 bytes from replicant (X.X.X.X): icmp_seq=2 ttl=64 time=0.050 ms?s Thanks for the help. Solution: It seems the DSL router my ISP saddled me with was causing the trouble. Changing my DNS server from 192.168.1.1 (router's IP) to google's (8.8.8.8, always good to know when you are in a hurry) instantly solved the connection delay problem. I am guessing that the 50€ router provided does not cache DNS entries, although I don't understand why pinging the DNS address had no delay, and 20 seconds is too long of a wait, even for uncached DNS. Tnanks again for the help!

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