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• Apache out of memory on

  - by Sherif Buzz

  Hi all, I have a VPS with 768 MB RAM and a 1.13 GHZ processor. I run a php/mysql dating site and the performance is excellent and server load is generally very low. Sometimes I place ads on Facebook and at peak times I can get 100-150 clicks within a few seconds - this causes the server to run out of memory : Cannot allocate memory: couldn't create child process: /opt/suphp/sbin/suphp .... And all users receive an error 500 page. I am just wondering if this sounds reasonable or not - to me 100-150 does not seem to be a number that should cause apache to run out of memory. Any advice/recommendations how to diagnose the issue highly appreciated.

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• redirection problem for my sites.

  - by redirect-p

  I have a site example.com and another one test.example.com. Both have different configuration file. But when I enter url test.example.com it will redirect to example.com. configuration file for example.com <VirtualHost *:80> ServerName example.com ServerAlias www.example.com DirectoryIndex index.html DocumentRoot my-document-path Options -Indexes ErrorDocument 404 /errors/404.html ErrorDocument 403 /errors/404.html <Location "/"> SetHandler python-program PythonHandler django.core.handlers.modpython PythonPath "['path', 'path'] + sys.path" SetEnv DJANGO_SETTINGS_MODULE example.settings PythonInterpreter example PythonAutoReload On PythonDebug On </Location> </VirtualHost>

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• How to enable CDR on AsteriskNow 1.5

  - by Michal Niklas

  I have upgraded PBX to Asterisk 1.6.2.7 and now CDR files are not created. It looks that such logging is disabled: Connected to Asterisk 1.6.2.7 currently running on pbx2 (pid = 5824) Verbosity is at least 3 pbx2*CLI> cdr show status pbx2*CLI> Call Detail Record (CDR) settings ---------------------------------- Logging: Disabled Mode: Simple Asterisk shows that CDR modules are loaded: pbx2*CLI> module show like cd Module Description Use Count cdr_manager.so Asterisk Manager Interface CDR Backend 0 cdr_csv.so Comma Separated Values CDR Backend 0 app_cdr.so Tell Asterisk to not maintain a CDR for 0 app_forkcdr.so Fork The CDR into 2 separate entities 0 func_cdr.so Call Detail Record (CDR) dialplan functi 0 cdr_custom.so Customizable Comma Separated Values CDR 0 6 modules loaded How to enable creating CDR csv files?

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• Data loss through permissions change?

  - by charliehorse55

  I seem to have deleted some files on my media drive, simply by changing the permissions. The Story I have many operating systems installed on my computer, and constantly switch between them. I bought a 1TB HD and formatted it as HFS+ (not journaled). It worked well between OSX and all of my linux installations while having much better metadata support than NTFS. I never synced the UIDs for my operating systems so the permissions were always doing funny things. Yesterday I tried to fix the permissions by first changing the UIDs of the other operating systems to match OSX, and then changing the file ownership of all files on the drive to match OSX. About 50% of the files on the drive were originally owned by OSX, the other half were owned by the various linux installations. I started to try and change the file permissions for the folders, and that's when it went south. The Commands These commands were run recursively on the one section of the drive. sudo chflags nouchg sudo chflags -N sudo chown myusername sudo chmod 666 sudo chgrp staff The Bad Sometime during the execution of these commands, all of the files belonging to OSX were deleted. If a folder had linux based files it would remain intact but any folder containing exclusively OSX files was erased. If a folder containing linux files also contained a subfolder with only OSX files, the sub folder would remain but is inaccesible and displays a file size of 0 bytes. Luckily these commands were only run on the videos folder, I also have a music folder with the same issue but I did not execute any of these commands on it. Effectively I have examples of the file permissions for all 3 states - the linux files before and after, and the OSX files before. OSX File Before -rw-r--r--@ 1 charliehorse 1000 3634241 15 Nov 2008 /path/to/file com.apple.FinderInfo 32 Linux File before: -rw-r--r--@ 1 charliehorse 1000 5321776 20 Sep 2002 /path/to/file/ com.apple.FinderInfo 32 Linux File After (Read only): (Different file, but I believe the same permissions originally) -rw-rw-rw-@ 1 charliehorse staff 366982610 17 Jun 2008 /path/to/file com.apple.FinderInfo 32 These files still exist so if there are any other commands to run on them to determine what has happened here, I can do that. EDIT Running ls on one of the "empty" deleted OSX folders yields this: ls: .: Permission denied ls: ..: Permission denied ls: subdirA: Permission denied ls: subdirB: Permission denied ls: subdirC: Permission denied ls: subdirD: Permission denied I believe my files might still be there, but the permissions are screwed.

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• Forwarding MySQL connection with iptables and differents network interfaces

  - by Emilio Nicolás

  I have a PC with Ubuntu as a router. It has a 3G connection with a public IP to the Internet, and there is a private wireless subnet. So it has two active interfaces: ppp0: public IP (WAN) wlan0: private IP (LAN) With iptables I wannt to forward every MySQL connection (port 3306) to a local machine (10.42.43.10) of the subnet. I type these iptables commands: iptables -A PREROUTING -t nat -i ppp0 -p tcp --dport 3306 -j DNAT --to 10.42.43.10:3306 iptables -A FORWARD -p tcp -i ppp0 -o wlan0 -d 10.42.43.10 --dport 3306 -j ACCEPT But it doesn't work. telnet publicip 3306 fails :-( Any help will be appreciated. Thanks!

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• ActiveMQ Pure Master / Slave - Out of sync

  - by pico

  What i have : 1 master broker and 1 slave broker both in ActiveMQ 5.4.0 What i use : waitForSlave on master side and failover uri on slave side (in the master connector URI) What i want to do : I want to wait some delay (like 5 seconds) in case of a tiny network failures between master and slave before starting slave transpôrt connectors So i put this in slave config : <broker xmlns="http://activemq.apache.org/schema/core" brokerName="slave" dataDirectory="${activemq.base}/data" useJmx="true" persistent="true" populateJMSXUserID="true" masterConnectorURI="failover://(tcp://master:61616)?initialReconnectDelay=1000&amp;maxReconnectDelay=30000" shutdownOnMasterFailure="false" advisorySupport="false"> It seems to work but after a network hang between master and slave, the slave reconnect successfully and then the master logs a lot of : 2010-10-18 17:08:44,421 | ERROR | Slave Failed | org.apache.activemq.broker.ft.MasterBroker | ActiveMQ Task java.lang.IllegalStateException: Cannot lookup a connection that had not been registered: ID:master-1040-634226732611718750-0:0 at org.apache.activemq.broker.MapTransportConnectionStateRegister.lookupConnectionState(MapTransportConnectionStateRegister.java:93) at org.apache.activemq.broker.TransportConnection.lookupConnectionState(TransportConnection.java:1412) at org.apache.activemq.broker.TransportConnection.processRemoveConsumer(TransportConnection.java:561) at org.apache.activemq.command.RemoveInfo.visit(RemoveInfo.java:76) at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:309) at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:185) at org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:116) at org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:69) at org.apache.activemq.transport.vm.VMTransport.iterate(VMTransport.java:218) at org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTaskRunner.java:98) at org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:36) On the slave side everything is fine. So after that, i've tried to stop the master to see if the slave is capable of turning master after these "network hangs". The master took long time to shutdown (10 seconds) and then some error message appears in slave logs : 2010-10-18 17:09:32,915 | WARN | Async error occurred: java.lang.IllegalStateException: Cannot lookup a connection that had not been registered: ID:master-1049-634226732657812500-0:3 | org.apache.activemq.broker.TransportConnection.Service | VMTransport: vm://slave#5 java.lang.IllegalStateException: Cannot lookup a connection that had not been registered: ID:master-1049-634226732657812500-0:3 at org.apache.activemq.broker.MapTransportConnectionStateRegister.lookupConnectionState(MapTransportConnectionStateRegister.java:93) at org.apache.activemq.broker.TransportConnection.lookupConnectionState(TransportConnection.java:1412) at org.apache.activemq.broker.TransportConnection.processRemoveSession(TransportConnection.java:600) at org.apache.activemq.command.RemoveInfo.visit(RemoveInfo.java:74) at org.apache.activemq.broker.TransportConnection.service(TransportConnection.java:309) at org.apache.activemq.broker.TransportConnection$1.onCommand(TransportConnection.java:185) at org.apache.activemq.transport.ResponseCorrelator.onCommand(ResponseCorrelator.java:116) at org.apache.activemq.transport.TransportFilter.onCommand(TransportFilter.java:69) at org.apache.activemq.transport.vm.VMTransport.iterate(VMTransport.java:218) at org.apache.activemq.thread.DedicatedTaskRunner.runTask(DedicatedTaskRunner.java:98) at org.apache.activemq.thread.DedicatedTaskRunner$1.run(DedicatedTaskRunner.java:36) Are they any ways to keep my kaha stores (they are individual stores) synchronised? The main problem is that the slave never turn master after a master failure, it stay block on this message : 2010-10-18 17:09:33,681 | WARN | Transport (master/172.21.60.61:61616) failed to tcp://master:61616 , attempting to automatically reconnect due to: java.net.SocketException: Software caused connection abort: socket write error | org.apache.activemq.transport.failover.FailoverTransport | ActiveMQ Transport: tcp://master/172.21.60.61:61616 I'm totally stuck with these syncs problems, any help welcome! Regards

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• Bringing people into an Asterisk conference call

  - by Harley

  I'm using Asterisk 1.4 and am trying to work out a way to bring people into a conference call. In the ideal scenario two people would be talking and one of them would push some keys, then a phone number and then the three of them would be in a conference. From there they should be able to bring in other people as well. This seems to be what the Asterisk n-way call HOWTO is trying to do, but it doesn't work quite properly for me. Here's what happens: 1. Internal person A calls person B 2. Person A presses *0, he is given a dial tone and person B is taken to a conference room 3. Person A calls person C and they can talk, and then person A presses **. 4. Person C is brought to the conference room, but person A is disconnected. In the last step, A should be taken to the conference room as well. Here's the relevant logs, where 230 is person A, 231 is person B, 207 is person C, and 282 is the conference room.

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• wget mirroring, subdomains and directories and cookies

  - by Jimmu

  Hi all, I have an account on a web page that is now "full" (ie I have used up all my allocated space) and I would like to make a mirror of that site. wget seems like the thing to use. The problem is that I would only like to mirror the sites the lie within this directory http://user.domain.com/room/2324343/transcript/ (and sub-directories). Whilst saving the correct stylesheets, javascripts and css etc which exist in different directories. There as also uploaded files that are linked to within the pages in the transcript directory (on different directories) that I would like to download/mirror (theses are in a variatey of formats .exe, .py, .png, .app (and many more)). There are also images that are on different severs that are on these pages. Also I would like it if the links (which are sometimes relative , sometimes absoulute (but to internal things), sometimes external ) worked correctly so that if they link to things that have been downloaded(mirrored) they work fine (without internet connection), but if they link to things that are external or havent been mirrored they link to the external site. Basically so they work as expected. Another problem is that you have to log in to acess the site. Can wget be used to acomplish this or is there a better way? either way how do I achive this? (I have asked this question at stackoverflow.com/questions/2190115/wget-mirroring-subdomains-and-directories-and-cookies but it was recommended that I try asking it here)

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• Extract tar with multiple tars inside?

  - by Andrew Fashion

  Is there a way to untar a file with multiple tars inside? It's suppose to just untar everything inside including untarring the tars inside the tar... With windows it does it, quite annoying I can't figure it out on linux... Here is what I am doing: # tar -xvf socialengine4.0.5p1.tar core-base-4.0.5.tar core-install-4.0.7.tar external-autocompleter-4.0.0.tar external-calendar-4.0.1.tar external-chootools-4.0.3.tar external-fancyupload-4.0.1.tar external-firebug-4.0.0.tar external-flowplayer-4.0.0.tar external-moocomet-4.0.0.tar external-moocrop-4.0.0.tar external-moolasso-4.0.0.tar external-mootools-4.0.2.tar external-mootree-4.0.0.tar external-open-flash-chart-4.0.0.tar external-smoothbox-4.0.0.tar external-swfobject-4.0.0.tar external-tagger-4.0.2.tar external-tinymce-4.0.2.tar library-engine-4.0.5.tar library-facebook-4.0.0.tar library-ofc-4.0.0.tar library-pear-4.0.1.tar library-scaffold-4.0.3.tar module-activity-4.0.5p1.tar module-announcement-4.0.3.tar module-authorization-4.0.5.tar module-core-4.0.5.tar module-fields-4.0.5p1.tar module-invite-4.0.3.tar module-messages-4.0.5.tar module-network-4.0.5p1.tar module-storage-4.0.4.tar module-user-4.0.5.tar widget-rss-4.0.2.tar widget-weather-4.0.0.tar changelog.html [root@D18634 se4]# ls -l total 36980 -rw-r--r-- 1 1000 1000 27188 Oct 8 15:39 changelog.html -rw-r--r-- 1 1000 1000 359424 Oct 8 16:13 core-base-4.0.5.tar -rw-r--r-- 1 1000 1000 1122304 Oct 8 16:13 core-install-4.0.7.tar -rw-r--r-- 1 1000 1000 38400 Oct 8 16:13 external-autocompleter-4.0.0.tar -rw-r--r-- 1 1000 1000 100352 Oct 8 16:13 external-calendar-4.0.1.tar -rw-r--r-- 1 1000 1000 31232 Oct 8 16:13 external-chootools-4.0.3.tar -rw-r--r-- 1 1000 1000 66560 Oct 8 16:13 external-fancyupload-4.0.1.tar -rw-r--r-- 1 1000 1000 85504 Oct 8 16:13 external-firebug-4.0.0.tar -rw-r--r-- 1 1000 1000 216576 Oct 8 16:13 external-flowplayer-4.0.0.tar -rw-r--r-- 1 1000 1000 11776 Oct 8 16:13 external-moocomet-4.0.0.tar -rw-r--r-- 1 1000 1000 16384 Oct 8 16:13 external-moocrop-4.0.0.tar -rw-r--r-- 1 1000 1000 27648 Oct 8 16:13 external-moolasso-4.0.0.tar -rw-r--r-- 1 1000 1000 1445376 Oct 8 16:13 external-mootools-4.0.2.tar -rw-r--r-- 1 1000 1000 45568 Oct 8 16:13 external-mootree-4.0.0.tar -rw-r--r-- 1 1000 1000 330240 Oct 8 16:13 external-open-flash-chart-4.0.0.tar -rw-r--r-- 1 1000 1000 43008 Oct 8 16:13 external-smoothbox-4.0.0.tar -rw-r--r-- 1 1000 1000 18432 Oct 8 16:13 external-swfobject-4.0.0.tar -rw-r--r-- 1 1000 1000 19968 Oct 8 16:13 external-tagger-4.0.2.tar -rw-r--r-- 1 1000 1000 5711360 Oct 8 16:13 external-tinymce-4.0.2.tar -rw-r--r-- 1 1000 1000 1230848 Oct 8 16:13 library-engine-4.0.5.tar -rw-r--r-- 1 1000 1000 28672 Oct 8 16:13 library-facebook-4.0.0.tar -rw-r--r-- 1 1000 1000 125952 Oct 8 16:13 library-ofc-4.0.0.tar -rw-r--r-- 1 1000 1000 1715200 Oct 8 16:13 library-pear-4.0.1.tar -rw-r--r-- 1 1000 1000 340480 Oct 8 16:13 library-scaffold-4.0.3.tar -rw-r--r-- 1 1000 1000 354304 Oct 8 16:13 module-activity-4.0.5p1.tar -rw-r--r-- 1 root root 327680 Jan 8 02:37 module-albums-4.0.5.tar -rw-r--r-- 1 1000 1000 80896 Oct 8 16:13 module-announcement-4.0.3.tar -rw-r--r-- 1 1000 1000 147456 Oct 8 16:13 module-authorization-4.0.5.tar -rw-r--r-- 1 1000 1000 2643968 Oct 8 16:13 module-core-4.0.5.tar -rw-r--r-- 1 root root 665600 Jan 8 02:37 module-events-4.0.5.tar -rw-r--r-- 1 1000 1000 377344 Oct 8 16:13 module-fields-4.0.5p1.tar -rw-r--r-- 1 root root 501760 Jan 8 02:37 module-forum-4.0.5p1.tar -rw-r--r-- 1 1000 1000 81408 Oct 8 16:14 module-invite-4.0.3.tar -rw-r--r-- 1 1000 1000 147968 Oct 8 16:14 module-messages-4.0.5.tar -rw-r--r-- 1 1000 1000 111616 Oct 8 16:14 module-network-4.0.5p1.tar -rw-r--r-- 1 1000 1000 99840 Oct 8 16:14 module-storage-4.0.4.tar -rw-r--r-- 1 1000 1000 844288 Oct 8 16:14 module-user-4.0.5.tar -rw-r--r-- 1 root root 18094080 Jan 8 02:40 socialengine4.0.5p1.tar -rw-r--r-- 1 1000 1000 12288 Oct 8 16:14 widget-rss-4.0.2.tar -rw-r--r-- 1 1000 1000 13824 Oct 8 16:14 widget-weather-4.0.0.tar

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• "dig +trace fqdn" and "dig fqdn" do not give the same result on a LAN with windows DNS server, why?

  - by Sulliwane

  in my company LAN I have a Ubuntu 14.04 server running in Virtualbox (as guest) on a Windows 7 (the host) with network interface bridged (so the Ubuntu server belongs to the LAN, with its ip: 192.168.1.85). I have a website on this server: mywebsite.com The gateway for the LAN to the internet is 192.168.1.1 (Cisco 1841)--188.188.188.254 as public IP. There is a Windows 2008 server that acts as DNS server and DHCP server on the LAN. I added a Forward zone "mywebsite.com" with A record - 192.168.1.85. Outside the LAN, mywebsite.com has public Dns records that point on the Cisco 1841 public IP (188.188.188.254) Now when I ping mywebsite.com from the lan, I quickly get 192.168.1.85. But when I'm connecting through the browser on the clients, it's not always fast. So I'm wondering: Are my requests really/directly resolved and forwarded to 192.168.1.85, OR are they sent out of the LAN, and then forwarded back to the CISCO public 188.188.188.254:80 and NAT to the Ubuntu server before being served ??? To try to answer this question, I looked for tracking the DNS request from my linux client on the LAN: v@v-ss9:~$ dig mywebsite.com ; <<>> DiG 9.9.5-3-Ubuntu <<>> mywebsite.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 24850 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4000 ;; QUESTION SECTION: ;mywebsite.com. IN A ;; ANSWER SECTION: mywebsite.com. 3600 IN A 192.168.1.85 ;; Query time: 1 msec ;; SERVER: 127.0.1.1#53(127.0.1.1) ;; WHEN: Fri Aug 22 09:50:16 CST 2014 ;; MSG SIZE rcvd: 66 This answer looks right: 192.168.1.85. But then look at this: v@v-ss9:~$ dig +trace mywebsite.com ; <<>> DiG 9.9.5-3-Ubuntu <<>> +trace mywebsite.com ;; global options: +cmd . 12955 IN NS h.gtld-servers.net. . 12955 IN NS g.gtld-servers.net. . 12955 IN NS m.gtld-servers.net. . 12955 IN NS i.gtld-servers.net. . 12955 IN NS l.gtld-servers.net. . 12955 IN NS k.gtld-servers.net. . 12955 IN NS j.gtld-servers.net. . 12955 IN NS d.gtld-servers.net. . 12955 IN NS b.gtld-servers.net. . 12955 IN NS c.gtld-servers.net. . 12955 IN NS a.gtld-servers.net. . 12955 IN NS e.gtld-servers.net. . 12955 IN NS f.gtld-servers.net. ;; Received 516 bytes from 127.0.1.1#53(127.0.1.1) in 18 ms mywebsite.com. 172800 IN NS ns3.rmi.fr. mywebsite.com. 172800 IN NS ns4.rmi.fr. CK0POJMG874LJREF7EFN8430QVIT8BSM.com. 86400 IN NSEC3 1 1 0 - CK0QFMDQRCSRU0651QLVA1JQB21IF7UR NS SOA RRSIG DNSKEY NSEC3PARAM CK0POJMG874LJREF7EFN8430QVIT8BSM.com. 86400 IN RRSIG NSEC3 8 2 86400 20140825045016 20140818034016 6122 com. Imq8K9xlvFXlB4IjUkdxOc5YHoTEhqSQUlRSJ9QCIhd9wzGpWJ54AfVf WJ0SUKThalpzqS0cXdLGtNmuYgqLfwUMjpUlT4c+zJyx7I4QMPLImQZh Ov0xy3mUr7dLlymAJYGs9dLI2IaheLvpKTBwaV1gAvo8QEkU8VRiJ7gW 9dk= U0PIA23FHMVPTKSDHC9PJ1BEA9SIB65R.com. 86400 IN NSEC3 1 1 0 - U0PL33R61V6TCCPBS1171PROP57ASRD9 NS DS RRSIG U0PIA23FHMVPTKSDHC9PJ1BEA9SIB65R.com. 86400 IN RRSIG NSEC3 8 2 86400 20140825043502 20140818032502 6122 com. qsC5sJbwklao+OedCHpcYo56aQaY0N+7peKmPu8szvjAQoJFRWyuDfAh Nw/gvHXEMzG7tYLriQGVfsiK8GZdPXyG4Ghe1MNN4jOZnSahkT5LjlqL 5QyGC0QiClRMPDAYjUOFGQDkjOJcJYvTNkEyXC2BEpfLI5SwCbYqwqg3 RkE= ;; Received 585 bytes from 192.41.162.30#53(l.gtld-servers.net) in 297 ms mywebsite.com. 86400 IN A 188.188.188.254 mywebsite.com. 86400 IN NS ns3.rmi.fr. mywebsite.com. 86400 IN NS ns4.rmi.fr. ;; Received 204 bytes from 212.51.161.18#53(ns3.rmi.fr) in 310 ms Here I get my CISCO public IP 188.188.188.254!!! Is it normal? How to know if my browser (from the LAN) is really directly communicating with 192.168.1.85 when using mywebsite.com? Thank you for your help.

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• Oracle performance problem

  - by jreid42

  We are using an Oracle 11G machine that is very powerful; has redundant storage etc. It's a beast from what I have been told. We just got this DB for a tool that when I first came on as a coop had like 20 people using, now its upwards of 150 people. I am the only one working on it :( We currently have a system in place that distributes PERL scripts across our entire data center essentially giving us a sort of "grid" computing power. The Perl scripts run a sort of simulation and report back the results to the database. They do selects / inserts. The load is not very high for each script but it could be happening across 20-50 systems at the same time. We then have multiple data centers and users all hitting the same database with this same approach. Our main problem with this is that our database is getting overloaded with connections and having to drop some. We sometimes have upwards of 500 connections. These are old perl scripts and they do not handle this well. Essentially they fail and the results are lost. I would rather avoid having to rewrite a lot of these as they are poorly written, and are a headache to even look at. The database itself is not overloaded, just the connection overhead is too high. We open a connection, make a quick query and then drop the connection. Very short connections but many of them. The database team has basically said we need to lower the number of connections or they are going to ignore us. Because this is distributed across our farm we cant implement persistent connections. I do this with our webserver; but its on a fixed system. The other ones are perl scripts that get opened and closed by the distribution tool and thus arent always running. What would be my best approach to resolving this issue? The scripts themselves can wait for a connection to be open. They do not need to act immediately. Some sort of queing system? I've been suggested to set up a few instances of a tool called "SQL Relay". Maybe one in each data center. How reliable is this tool? How good is this approach? Would it work for what we need? We could have one for each data center and relay requests through it to our main database, keeping a pipeline of open persistent connections? Does this make sense? Is there any other suggestions you can make? Any ideas? Any help would be greatly appreciated. Sadly I am just a coop student working for a very big company and somehow all of this has landed all on my shoulders (there is literally nobody to ask for help; its a hardware company, everybody is hardware engineers, and the database team is useless and in India) and I am quite lost as what the best approach would be? I am extremely overworked and this problem is interfering with on going progress and basically needs to be resolved as quickly as possible; preferably without rewriting the whole system, purchasing hardware (not gonna happen), or shooting myself in the foot. HELP LOL!

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• SQL Server 2008 login problem with ASP.NET application: Failed to open the explicitly specified data

  - by eulerfx

  I am running SQL Server 2008 Express Edition on Windows Server 2008 with an ASP.NET application which must access the server. The ASP.NET application is associated with an application pool that runs on the NetworkService account. This account in turn has a Login and User record on SQL Server in the required database. When I attempt to run the ASP.NET website I get a blank page and when viewed in the error log, I seem to be getting this information event record: Login failed for user 'NT AUTHORITY\NETWORK SERVICE'. Reason: Failed to open the explicitly specified database. [CLIENT: myLocalMachine] The connection string has Trusted_Connection=True; and the required database specified. When I explicitly specify the user name and password I get another login error stating the password is incorrect, even though the same un/pw combination works through SQL Server Management studio. The NETWORK SERVICE account seems to have all the required privileges for the database. Also, I made a test ASP.NET website project which does a simple select from a table in that database, and using the same config file I am not getting the error and it seems to work. Is it something to do with trust levels then, because the original ASP.NET web app references various DLLs including open source libraries. Also, the application does not seem to be able to write to the event log itself, throwing a security exception, even though everything in the config files, including machine.config states the app is in full trust.

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• ESX hosts lose connectivity with iSCSI SAN LUNs

  - by Themist

  I've been experiencing this issue for a couple of months now where my ESX hosts lose connectivity with my iSCSI SAN vmfs volumes. As a results the ESX hosts enter a nonresponsive mode the associated VMs disconnect and the only remedy is to reboot the host. This issue happens randomly . I have escalated this issue with VMWare but I haven't had any solution to the issue yet. I see no errors on my switches and there are no hardware issues as well. My SAN infrastucture is solid and there are 2 paths for every vmfs volume. Did anybody else experienced a similar issue? Themis

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• Fritz!Box IPv6-Address different than IPv6-Prefix

  - by kmindi

  In my Fritzbox it states the following: IPv6-Adresse: 2a02:8070:600::14b6:c7******, Gültigkeit: 100465/86065s IPv6-Präfix: 2a02:8070:62c:3200::/56, Gültigkeit: 100464/86064s I am not able to connect to IPv6 Addresses from computers configured by the fritzbox, because they get an address with prefix 2a02:8070:62c:3200::/56 but somehow the fritzbox does not route those addresses. Is this because the IPv6-Address is not in the prefix range? The address of the Fritzbox responds to pings, but my computers reached via various addresses from the prefix range do not (: PING 2a02:8070:62c:3200:28d****(2a02:8070:62c:3200:28d****) 32 data bytes From 2a02:8070:600:0:14b6*** icmp_seq=0 Destination unreachable: Administratively prohibited From 2a02:8070:600:0:14b6*** icmp_seq=1 Destination unreachable: Administratively prohibited From 2a02:8070:600:0:14b6*** icmp_seq=2 Destination unreachable: Administratively prohibited From 2a02:8070:600:0:14b6*** icmp_seq=3 Destination unreachable: Administratively prohibited blocked ping this is "view" from outside From inside the ping6 looks like this: traceroute -6 heise.de traceroute to heise.de (2a02:2e0:3fe:100::8), 30 hops max, 80 byte packets 1 fritz.box (2a02:8070:62c:3200:****) 0.787 ms 1.424 ms 1.702 ms 2 * * * ...... 30 * * *

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• Apache Solr Admin on Tomcat Deployed in WebApps Directory

  - by KM01

  I am trying to get Apache Solr to work on Redhat6 and Tomcat6 (using these instructions), but get this error when browsing to the admin section, http://localhost:8080/solr-example/admin: HTTP Status 404 - missing core name in path type Status report message missing core name in path description The requested resource (missing core name in path) is not available. http://localhost:8080/solr-example loads fine, with a link to "Solr Admin." My setup is as follows: tomcat6: /etc/tomcat6 Solr: /app/solr/example I have a solr-example.xml in /etc/tomcat6/Catalina/localhost/, which reads: <?xml version="1.0" encoding="utf-8"?> <Context docBase="/app/solr/example/apache-solr-3.4.0.war" debug="0" crossContext="true"> <Environment name="solr/home" type="java.lang.String" value="/app/solr/example" override="true"/> </Context> I don't see anything in the logs (/var/log/tomcat6) ... only entires in catalina.out are regarding the starting and stopping of tomcat6. My questions are: 1.What else do I need to do to get "Solr Admin" to work under Tomcat? 2.Where are these "cores" supposed to be specified? I see an entry in /app/solr/example/solr/solr.xml ? <solr persistent="false"> adminPath: RequestHandler path to manage cores. If 'null' (or absent), cores will not be manageable via request handler <cores adminPath="/admin/cores" defaultCoreName="collection1"> <core name="collection1" instanceDir="." /> </cores> </solr> 3.How do I got about ensuring that logs are working correctly? I can't find logs that contain mention of the 404 above. Update in response to @quanta's comment: Downloaded former (apache-solr-3.4.0.tgz) dataDir was not set, now set to: <dataDir>${solr.data.dir:../solr/data}</dataDir> JAVA_OPTS: /usr/lib/jvm/java/bin/java -classpath :/usr/share/tomcat6/bin/bootstrap.jar:/usr/share/tomcat6/bin/tomcat-juli.jar:/usr/share/java/commons-daemon.jar -Dcatalina.base=/usr/share/tomcat6 -Dcatalina.home=/usr/share/tomcat6 -Djava.endorsed.dirs= -Djava.io.tmpdir=/var/cache/tomcat6/temp -Djava.util.logging.config.file=/usr/share/tomcat6/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager org.apache.catalina.startup.Bootstrap start catalina.out contains no indication of the above error

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• How can I close a port that appears to be orphaned by Xvfb?

  - by Jim Fiorato

  I'm running Xvfb on a FC8 Amazon EC2 image. On occasion Xvfb will crash (unable at the moment to find out the reason for the crash), and after crashing the TCP port will appear to be orphaned. I'm unable to get a PID to kill any process that may be using it. I'm starting Xvfb with: Xvfb :7 -screen 0 1024x768x24 & Examples of what I'm working with are below, the Xvfb port is (was) 6007: # netstat -ap Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 *:ssh *:* LISTEN 1894/sshd tcp 0 0 *:6007 *:* LISTEN - tcp 0 352 ip-10-84-69-165.ec2.int:ssh c-71-194-253-238.hsd1:51689 ESTABLISHED 2981/0 udp 0 0 *:bootpc *:* 1817/dhclient udp 0 0 *:bootpc *:* 1463/dhclient Active UNIX domain sockets (servers and established) Proto RefCnt Flags Type State I-Node PID/Program name Path unix 2 [ ] DGRAM 871 668/udevd @/org/kernel/udev/udevd unix 2 [ ACC ] STREAM LISTENING 5385 1880/dbus-daemon /var/run/dbus/system_bus_socket unix 6 [ ] DGRAM 5353 1867/rsyslogd /dev/log unix 2 [ ] DGRAM 11861 2981/0 unix 2 [ ] DGRAM 5461 1974/crond unix 2 [ ] DGRAM 5451 1904/console-kit-da unix 3 [ ] STREAM CONNECTED 5438 1880/dbus-daemon /var/run/dbus/system_bus_socket unix 3 [ ] STREAM CONNECTED 5437 1904/console-kit-da unix 3 [ ] STREAM CONNECTED 5396 1880/dbus-daemon unix 3 [ ] STREAM CONNECTED 5395 1880/dbus-daemon unix 2 [ ] DGRAM 5361 1871/rklogd # lsof -i COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME dhclient 1463 root 3u IPv4 4704 UDP *:bootpc dhclient 1817 root 4u IPv4 5173 UDP *:bootpc sshd 1894 root 3u IPv4 5414 TCP *:ssh (LISTEN) sshd 2981 root 3u IPv4 11825 TCP ip-10-84-69-165.ec2.internal:ssh->c-71-194-253-238.hsd1.il.comcast.net:51689 (ESTABLISHED) Attempting to force the port closed with iptables doesn't seem to work either. iptables -A INPUT -p tcp --dport 6007 -j DROP I'm at a loss as to how to reclaim/free the port. From what I can tell, this port will remain in this state until the EC2 instance is shut down. So, how can I close this port so I can restart Xvfb?

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• Fix stubborn 'Setting locale failed.'

  - by plua

  I have a very stubborn, well-known locale error on Ubuntu 9.10: perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LC_TIME = "custom.UTF-8", LANG = "en_US.UTF-8" Tried the following: Added LANG=en_US.UTF-8 and LC_ALL=en_US.UTF-8 to /etc/environment Run apt-get install --reinstall locales (error: perl: warning: Falling back to the standard locale ("C"). /usr/bin/mandb: can't set the locale; make sure $LC_* and $LANG are correct) Run sudo dpkg-reconfigure locales. Result: Cannot set LC_ALL to default locale: No such file or directory, and then updates locales all locales including en_US.UTF-8 sudo locale-gen updates all locales successfully, including en_US.UTF-8 sudo locale-gen un_US en_US.UTF-8 gives no error nor other output In /etc/default/locale it says LANG="en_US.UTF-8" echo $LANG gives en_US.UTF-8 /var/lib/locales/supported.d/local says en_US.UTF-8 UTF-8 locale -a gives me: C en_AG en_AU.utf8 en_BW.utf8 en_CA.utf8 en_DK.utf8 en_GB.utf8 en_HK.utf8 en_IE.utf8 en_IN en_NG en_NZ.utf8 en_PH.utf8 en_SG.utf8 en_US.utf8 en_ZA.utf8 en_ZW.utf8 POSIX So well... I am pretty much out of options I can think of. Anybody any idea?? Thanks!

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• SQL Server slow in production environment

  - by Lieven Cardoen

  I have a weird problem in a customer's production environment. I can't give any details on the infrastructure, except that SQL server runs on a virtual server. The data, log and filestream file are on another storage server (data and filestream together and log on a separate server). In our local Test environment, there's one particular query that executes with these durations: first we clear the cache 300ms (First time it takes longer, but from then on it's cached.) 20ms 15ms 17ms In the customer's production environment, the SQL Server is more powerful, these are the durations (I didn't have the rights to clear the cache. Will try this tomorrow). 2500ms 2600ms 2400ms The servers in the customer's production environment are more powerful but they do have virtual servers (we don't). What could be the cause... Not enough memory? Fragmentation? Physical storage? How would you tackle this performance problem? EDIT: Some people have asked me if the data set is equal and it is. I restored their database on our environment. It's true that this was the first thing I looked at. (@Everyone: I added the edit because it will be the first thing that many will think off).

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• Can ISC dhcpd operate as a proxy dhcp server for PXE boot?

  - by Matt

  I have an existing LAN with a DHCP server already dishing out IP addresses. For various reasons I cannot replace that server so it will still need to dish out IP addresses. I've been experimenting with dnsmasq in proxy mode to provide PXE boot filenames. Now I have dnsmasq chainloading iPXE ok, but I found that the problem with dnsmasq is that in proxy mode it won't send dhcp options down. So I can't seem to send option 17 to boot iscsi san. I read somewhere that it's not enabled in the source code. Oh well, so I thought perhaps I should try isc dhcpd (default version4 with ubuntu). But I can't find any configuration examples that work as a proxy. Does isc dhcpd even work in proxy mode? examples on the web imply patching the source. What other options do I have?

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• OpenJDK vs. Sun Java6 on Ubuntu

  - by Mark Renouf

  Due to past (bad) experience resulting from the GCJ stuff being provided by default on certain distributions, I've always traditionally installed the official Sun Java package on servers. On Ubuntu it's been easy but now OpenJDK is a preferred option and easier to install... I wonder: is there any reason not to use it instead? As far as I understand it's the open source version of the Sun JDK.

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• pcap stream rotation and pruning

  - by pilcrow

  Some of my servers collect a lot of packet data. Is there a utility (or patch to tcpdump(1)) to log a pcap stream to disk which: Rotates based on size of data written Prunes written files, keeping only the N most recent Does not re-use output filenames Is self-contained (Ruling out, e.g., a rotation with external pruning via crond(8)+tmpwatch(8)) Basically I want a multilog or svlogd that groks the pcap record format. The -W filecount option of tcpdump-4.0.0 "prunes" by recycling old filenames, which violates #3 above, forcing me to consult mtimes to determine recency and providing no guarantees against surprise truncation of the log file. The -G option introduces strftime(2)-specifier support in output filenames, which would give me at least second-precision in file names, but I can't figure out how to get pruning to work with this scheme.

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• creating a 802.11n wireless network between laptops and asus n-13 wireless adapter

  - by xpugur

  I have a asus usb n-13 wireless adapter and 3 laptops in a home we try to create a network witn 802.11n standards but failed each time laptops have intel 5100 agn. We try to create network with wpa-2 personal encryption that also fails(couldn't connect) but with wep encryption connects but with 802.11g standard... so do you know how to create a 802.11N based network? ... thank you...

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• Able to connect by SSH, but not x2go

  - by Mike

  I am having trouble connecting to a remote server with X2GO using a DSA key. Connecting works fine over SSH, but when I try to connect with X2GO, it goes immediately to the username/password box and doesn't want to use the private key I specify in the options. If I select "Try auto login" it appears to try to connect and then I get the following error: No public key matched Access denied. Authentication that can continue: publickey It was working previously, but I reinstalled the client OS and since then I am unable to connect. I copied all of the SSH keys over from the previous installation. I also tried deleting my ~/.ssh/known_hosts file and adding the key to ssh-agent with no success, but the key is definitely added correctly: $ ssh-add -l 1024 b9:3d:e5:ef:48:ea:fc:c6:6e:45:89:b5:35:e7:58:39 server.com_dsa (DSA) Note, if I enable password authentication on the server, I can connect fine, however I would like to use publickey. Any ideas how I can connect with public key authentication?

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• Good low-cost SSL certificate providers

  - by phenry

  We need an SSL certificate to facilitate remote access and administration by a small number of employees. I don't want to have to train a bunch of non-technical users to install a self-published cert on their home computers, so I'd prefer to purchase one from a well-trusted provider. We won't be using it for any kind of e-commerce or things like that, so it seems hard to justify paying the prices demanded by some of the big-name providers. Who are some good low-cost providers to consider? What are the important differences between the offerings that are available at different price points? (And is the certificate business really as much of a racket as it seems?)

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• SQLCMD not recogized despite install of SQL Server Native Client for SQL2008

  - by John Galt

  This little question is part of a much larger issue I am trying to resolve: Does SQLCMD require a separate install or is it included with the Microsoft SQL Server 2008 Native Client (which I just installed on my webserver). Maybe this is just an incorrect path issue. Here is what I tried: C:\>sqlcmd -S tcp:devmojito\mssqlserver2008,1433 'sqlcmd' is not recognized as an internal or external command, operable program or batch file. C:\> This same syntax works when executed from the c drive on my SQL Server machine.

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