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• Solar Case Mod Powers Raspberry Pi FTP Server with Sunshine

  - by Jason Fitzpatrick

  This project combines a solar panel, Raspberry Pi, and a bit of code for the Pi to turn the whole array into a solar powered server (you could easily modify the project to become a solar powered music player or other device). The case mod comes to us courtesy of tinker CottonPickers–he shares the build and offers the cases for sale here. Building off the solar case, David Hayward at CNET UK added on an FTP server so that the Pi can serve as a tiny, take-anywhere, power-outlet optional, file sharing hub. Hit up the link below for the FTP configuration instructions. How to Make a Raspberry Pi Solar-Powered FTP Server [CNET UK] How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot Our Geek Trivia App for Windows 8 is Now Available Everywhere

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• Ubuntu 13.10 gives "Package 'libapache2-mod-auth-mysql' has no installation candidate" error

  - by John Crawford

  I'm trying to install my LAMP environment on Ubuntu 13.10 using my script file that can be found here. That script worked for Ubuntu 12.04, Ubuntu 13.04 but when I try it on Ubuntu 13.10 it gives the following error: E: Package 'libapache2-mod-auth-mysql' has no installation candidate Any idea on how to fix this? Note, I do want this package to be installed. EDIT: I've found out now that the reason this could not be installed was because it needed the following two packages that were missing: libmysqlclient16 and apache2.2-common. Do I just need to install these packages or were they removed for a reason?

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• Mod Rewrite not working on my addon domain

  - by Ogugua Belonwu

  have a wordpress website on my main domain For the wordpress website i have this in my .htaccess file # BEGIN WordPress <IfModule mod_rewrite.c> RewriteEngine On RewriteBase / RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . /index.php </IfModule> # END WordPress I just created an addon domain and wanted to use new rules for it I created a .htaccess file and put it inside the addon folder eg /newaddon In the .htaccess file i have: Options -Indexes <IfModule mod_rewrite.c> RewriteEngine On RewriteBase / RewriteRule ^readjob/(.*)/(.*)/(.*)/$ readjob.php?id=$1&amp;cat=$2&amp;title=$3 </IfModule> The url stucture i have is this: http://www.website.com/readjob/3/jobs/web-designers-potech-integrated-services/ But it keeps telling me link is broken I dont know what to do, pls i need assistance (pls i just learnt mod rewriting today, so clarity will be highly appreciated) Thanks

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• file error /boot/grub/i386-pc/normal.mod trying to repair boot, live dvd install probleml

  - by user179295

  I have seen that there are a lot of threads about this problem. I had Windows 8 installed on my series 3 samsung i5 computer and I tried to install ubuntu 13.04. This is what I did: Because of the secure boot I can't install ubuntu from the dvd. So I went in the bios and disabled secure boot and enabled ''CSM''. I went out of the bios and windows 8 couldn't boot more. So I follow a guide on this thread ( Installing on a Pre-Installed Windows 8 System (UEFI Supported) ) and on ubuntu I tried to repair the boot by inserting this code in the terminal: sudo add-apt-repository ppa:yannubuntu/boot-repair sudo apt-get update sudo apt-get install boot-repair Then I ran boot-repair and I follow all the steps. Then I reboot the sistem and saw the black screen that says: error: file '/boot/grub/i386-pc/normal mod' not found grub rescure> Now I saw a lot of guides about this problem but I can't understand how to reistall ubuntu trough the live dvd that I used to install it the first time... I put it in the computer but nothing appears.. so what should I do now? I'm a noob on ubuntu and I have read all the things about this grub 2 install and know where the problem comes from but how to start the dvd??

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• Apache httpd workers retry

  - by David Newcomb

  I have an Apache httpd web server running mod_proxy and mod_proxy_balancer. The whole of /somedir is sent to 2 worker machines which service the requests using the round robin scheduler. Each worker machine is running IIS but I don't think that is important. I can demonstrate the load balancer working by repeatedly requesting a single page which contains the IP address of the machine and can see that it switches from one to the other in a predictable round robin fashion. If I switch off one of the IIS servers and start requesting the same page then each page only contains the IP address of the machine that is up. However, if I start IIS and don't run my IIS application then /somedir returns 500 (as it should). I've added 500 to the failonstatus (Apache 2.4) so when it hits the error Apache places the worker machine into error state. Apache still returns the proxy error to the client though. How can I make Apache catch the proxy failure and retry using a different worker in the same way that a connection failure does. Update There is almost the same question asked in StackOverflow so joining them together. http://stackoverflow.com/questions/11083707/httpd-mod-proxy-balancer-failover-failonstatus-transperant-switching

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• varnish3, mod_geoip with apache2 using mod_rewrite and mod_rpaf

  - by mursalat

  I am maintaining a website with 3 different versions of the site, with 3 different languages, handles with a single system written in php, which takes in environment variables based on the domain name that is being accessed. These are the three sites: myshop.com : english international version myshop.eu : european version of site myshop.ru : russian version of the site when myshop.com is accessed from russia it is to be redirected to myshop.ru, and any country from europe accesses myshop.com, is redirected to myshop.eu, and international visitors stay at myshop.com, although they can go to the country specific site. All these redirections for the country is done using GeoIP apache2 mod in order to determine the country code, which is used in a RewriteCondition to state a RewriteRule, there are some exceptions of IPs that do not do the rewrite for, basically the IPs of the developer's PCs. The site has been doing just fine, until we decided to setup varnish to give the site a boost, it really did give it a great boost, but the country specific rewrites has become buggy. What started to happen is that a russian visitor can go to myshop.com and won't be redirected, until he clicks a random link (perhaps a link not cached by varnish yet) and the user is redirected to their specific country. For that i setup mod_rpaf, and for exceptions to the rewrite rule (for the developer's ip), i used this RewriteCond %{HTTP:X-FORWARDED-FOR} !^43\.43\.43\.43, and i restarted varnish and apache2, it worked for a while, then it messed up again. And whole day i have been doing changes however i have little no clue as to what's going on, sometimes it works, and sometimes it doesn't, and sometimes it half works, etc... As for geoip, i used a php to check the $_SERVER variable, and here is the general idea of the output [HTTP_X_FORWARDED_FOR] => 43.43.43.44 [HTTP_X_VARNISH] => 1705675599 [SERVER_ADDR] => 127.0.0.1 [SERVER_PORT] => 80 [REMOTE_ADDR] => 43.43.43.44 [GEOIP_ADDR] => 43.43.43.44 [GEOIP_CONTINENT_CODE] => EU [GEOIP_COUNTRY_CODE] => FR [GEOIP_COUNTRY_NAME] => France Now, thanks to the "random" redirects, i hardly have a clue as to what is going on, so can you guys please give me some ideas as to what tools to use to debug this? I have tried to see the redirect logs, but they really dont show much, and varnishlog isn't helping much either - although i must admit i am no professional at varnish. I believe the problem is with varnish trying to cache the url, and thus apache redirects are not being done properly, however visits the site first has a redirect, and based on that other users are served the content, depending on from where the user was when the cache was last updated, is it correct? if so, how can i solve the problem? Also, i have the option of using geoip redirects on varnish3 instead of using apache2 to do the redirects, is that what the best practice is? Any suggestion as to debugging this or to fix this would be helpful! thnx!

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• Should I replace libapache2-mod-php5-filter with libapache2-mod-php5 on Debian 6 Apache 2.2.16?

  - by luison

  Upgrading various virtual machines we are having an issue with the Debian package upgrade to version 2.2.16 The upgrade (surprisingly) seems to remove libapache2-mod-php5 replacing it with libapache2-mod-php5-filter. This gave us some headache as the php.ini was pointing to the "old" one and some of the apache.conf conditional module rules stopped working. We can fix all those but we can't figure out if there would be any issues if we just "reversed" this and simply install libapache2-mod-php5 again and load that module instead of the "filter" one or in there is anyway to "alias" a module. I tend to think that the change "has a reason" but after reading apache2 and php5: module or filter I understand the module differences are to do with post delivery security issues.

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• 502: proxy: pass request body failed

  - by Apikot

  Sometimes I get the following error (in apache's error.log) when viewing my site over https: (502)Unknown error 502: proxy: pass request body failed to xxx.xxx.xxx.xxx:443 I'm not entirely sure what this is and why it happens, it's also not consistent. The request route is: Browser Proxy server (apache with mod_proxy + mod_ssl) Load balancer (aws) Web server (apache with mod_ssl) The configuration on the proxy server is as follows: <VirtualHost *:443> ProxyRequests Off ProxyVia On ServerName www.xxx.co.uk ServerAlias xxx.co.uk <Directory proxy:*> Order deny,allow Allow from all </Directory> <Proxy *> AddDefaultCharset off Order deny,allow Allow from all </Proxy> ProxyPass / balancer://cluster:443/ lbmethod=byrequests ProxyPassReverse / balancer://cluster:443/ ProxyPreserveHost off SSLProxyEngine On SSLEngine on SSLCipherSuite ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP:+eNULL SSLCertificateFile /var/www/vhosts/xxx/ssl/www.xxx.co.uk.cert SSLCertificateKeyFile /var/www/vhosts/xxx/ssl/www.xxx.co.uk.key <Proxy balancer://cluster> BalancerMember https://xxx.eu-west-1.elb.amazonaws.com </Proxy> </VirtualHost> Any idea what the issue might be?

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• Apache load balancer limits with Tomcat over AJP

  - by PAS

  Hi All, I have Apache acting as a load balancer in front of 3 Tomcat servers. Occasionally, Apache returns 503 responses, which I would like to remove completely. All 4 servers are not under significant load in terms of CPU, memory, or disk, so I am a little unsure what is reaching it's limits or why. 503s are returned when all workers are in error state - whatever that means. Here are the details: Apache config: <IfModule mpm_prefork_module> StartServers 30 MinSpareServers 30 MaxSpareServers 60 MaxClients 200 MaxRequestsPerChild 1000 </IfModule> ... <Proxy *> AddDefaultCharset Off Order deny,allow Allow from all </Proxy> # Tomcat HA cluster <Proxy balancer://mycluster> BalancerMember ajp://10.176.201.9:8009 keepalive=On retry=1 timeout=1 ping=1 BalancerMember ajp://10.176.201.10:8009 keepalive=On retry=1 timeout=1 ping=1 BalancerMember ajp://10.176.219.168:8009 keepalive=On retry=1 timeout=1 ping=1 </Proxy> # Passes thru track. or api. ProxyPreserveHost On ProxyStatus On # Original tracker ProxyPass /m balancer://mycluster/m ProxyPassReverse /m balancer://mycluster/m Tomcat config: <Server port="8005" shutdown="SHUTDOWN"> <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" /> <Listener className="org.apache.catalina.core.JasperListener" /> <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" /> <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" /> <Service name="Catalina"> <Connector port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" /> <Engine name="Catalina" defaultHost="localhost"> <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false"> </Engine> </Service> </Server> Apache error log: [Mon Mar 22 18:39:47 2010] [error] (70007)The timeout specified has expired: proxy: AJP: attempt to connect to 10.176.201.10:8009 (10.176.201.10) failed [Mon Mar 22 18:39:47 2010] [error] ap_proxy_connect_backend disabling worker for (10.176.201.10) [Mon Mar 22 18:39:47 2010] [error] proxy: AJP: failed to make connection to backend: 10.176.201.10 [Mon Mar 22 18:39:47 2010] [error] (70007)The timeout specified has expired: proxy: AJP: attempt to connect to 10.176.201.9:8009 (10.176.201.9) failed [Mon Mar 22 18:39:47 2010] [error] ap_proxy_connect_backend disabling worker for (10.176.201.9) [Mon Mar 22 18:39:47 2010] [error] proxy: AJP: failed to make connection to backend: 10.176.201.9 [Mon Mar 22 18:39:47 2010] [error] (70007)The timeout specified has expired: proxy: AJP: attempt to connect to 10.176.219.168:8009 (10.176.219.168) failed [Mon Mar 22 18:39:47 2010] [error] ap_proxy_connect_backend disabling worker for (10.176.219.168) [Mon Mar 22 18:39:47 2010] [error] proxy: AJP: failed to make connection to backend: 10.176.219.168 [Mon Mar 22 18:39:47 2010] [error] proxy: BALANCER: (balancer://mycluster). All workers are in error state [Mon Mar 22 18:39:47 2010] [error] proxy: BALANCER: (balancer://mycluster). All workers are in error state [Mon Mar 22 18:39:47 2010] [error] proxy: BALANCER: (balancer://mycluster). All workers are in error state [Mon Mar 22 18:39:47 2010] [error] proxy: BALANCER: (balancer://mycluster). All workers are in error state [Mon Mar 22 18:39:47 2010] [error] proxy: BALANCER: (balancer://mycluster). All workers are in error state [Mon Mar 22 18:39:47 2010] [error] proxy: BALANCER: (balancer://mycluster). All workers are in error state Load balancer top info: top - 23:44:11 up 210 days, 4:32, 1 user, load average: 0.10, 0.11, 0.09 Tasks: 135 total, 2 running, 133 sleeping, 0 stopped, 0 zombie Cpu(s): 0.1%us, 0.2%sy, 0.0%ni, 99.2%id, 0.1%wa, 0.0%hi, 0.1%si, 0.3%st Mem: 524508k total, 517132k used, 7376k free, 9124k buffers Swap: 1048568k total, 352k used, 1048216k free, 334720k cached Tomcat top info: top - 23:47:12 up 210 days, 3:07, 1 user, load average: 0.02, 0.04, 0.00 Tasks: 63 total, 1 running, 62 sleeping, 0 stopped, 0 zombie Cpu(s): 0.2%us, 0.0%sy, 0.0%ni, 99.8%id, 0.1%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 2097372k total, 2080888k used, 16484k free, 21464k buffers Swap: 4194296k total, 380k used, 4193916k free, 1520912k cached Catalina.out does not have any error messages in it. According to Apache's server status, it seems to be maxing out at 143 requests/sec. I believe the servers can handle substantially more load than they are, so any hints about low default limits or other reasons why this setup would be maxing out would be greatly appreciated.

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• Apache reverse-proxy intermittent error 113 - No route to host

  - by BonkaBonka

  I've got an Apache 2.0.52 server on CentOS 4 that front-ends a couple of App servers (mix of Jetty and Tomcat). Apache has a handful of virtual hosts configured like this: <VirtualHost www1.example.com:443> ServerName www1.example.com DocumentRoot "/mnt/app_web/html" SSLEngine on SSLCipherSuite ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP SSLCertificateFile /etc/httpd/conf/ssl.crt/server.crt SSLCertificateChainFile /etc/httpd/conf/ssl.crt/chain.crt SSLCertificateKeyFile /etc/httpd/conf/ssl.key/server.key SetEnvIf User-Agent ".*MSIE.*" nokeepalive ssl-unclean-shutdown downgrade-1.0 force-response-1.0 RewriteEngine on RewriteRule ^/app1/(.*)$ http://app1.example.com:8080/app1/$1 [P,L] RewriteRule ^/app2/(.*)$ http://app2.example.com:8080/app2/$1 [P,L] </VirtualHost> However, I'm getting the following errors in the logs intermittently: [Fri Dec 04 07:19:41 2009] [error] (113)No route to host: proxy: HTTP: attempt to connect to 10.0.0.1:8080 (app1.example.com) failed I initially tried turning off IPv6, and that seemed to largely cure it, but I still have sporadic bursts of these messages. Additionally, we're running memcache on same front-end and during the times when I'm getting those messages in Apache's log, the following command doesn't work: echo stats | nc 127.0.0.1 11211 No messages are printed, but neither are the stats printed. I am completely lost as to how to proceed with troubleshooting this. =(

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• Apache2 mod_proxy to remote Tomcat7 - slow response

  - by 12N

  Been stuck with this one for a few days. Will try to provide as much information as possible, but please feel free to ask for extra detail. I have 2 VMs behind a NAT, 192.168.0.100 and 192.168.0.102, both running Ubuntu 11.04 x64. The first one is mapped to the exterior and is our webserver, has one Apache/2.2.17 install with several vhosts to serve static content, and there's also mod_jk for load balancing. The second one has a tomcat 7 install with several J2EE REST webservices but no apache - requests are expected to be passed directly from .100 apache to .102 tomcat. It is my intention to prepare a tomcat clustered environment. My problem: Requests reach to 192.168.0.100 with no trouble whatsoever, but then take about... 100 seconds for data to actually arrive to .102 - by that time apache has already timeouted, but tomcat receives and processes the request pretty normally. This happens both when using mod_jk, mod_proxy, or mod_ajp_proxy. No idea why, since there are no firewalls in either of the machines, both are pingable - more than that, there are NFS shares active working like a charm - and a mod_proxy experience shown that requests originating directly from .100 are processed normally. Also, to add insult to injury, a similar environment is set up at our office network. Everything works perfectly. -_- The only difference? We have no ip translation at the office and do everything by internal addresses - dunno if that's relevant in any way. Some configs: Apache vhost: <VirtualHost *:80> ServerAdmin webmaster@localhost DocumentRoot /var/www/ ServerName www.example.com ProxyRequests Off <Proxy *> Options Indexes FollowSymLinks MultiViews AllowOverride all Order allow,deny allow from all </Proxy> ProxyPass /bork http://192.168.0.102:8080/bork ProxyPassReverse /bork http://192.168.0.102:8080/bork LogLevel debug CustomLog ${APACHE_LOG_DIR}/api_access.log combined ErrorLog ${APACHE_LOG_DIR}/api_error.log </VirtualHost> Tomcat connectors <Connector port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> <Connector port="8009" enableLookups="false" redirectPort="8443" protocol="AJP/1.3" /> And a debug log from apache, from a test using mod_proxy_ajp. The behavior is pretty much the same in mod_proxy, at least regarding the delay. Please note that tomcat eventually receives and processes the request, more or less when the log starts being updated again: [Sun May 06 14:40:33 2012] [debug] proxy_util.c(1506): [client 188.81.234.2] proxy: ajp: found worker ajp://192.168.0.102:8008/bork for ajp://192.168.0.102:8008/bork/SSOIdentityProviderSoap [Sun May 06 14:40:33 2012] [debug] mod_proxy.c(1015): Running scheme ajp handler (attempt 0) [Sun May 06 14:40:33 2012] [debug] mod_proxy_ajp.c(661): proxy: AJP: serving URL ajp://192.168.0.102:8008/bork/SSOIdentityProviderSoap [Sun May 06 14:40:33 2012] [debug] proxy_util.c(2011): proxy: AJP: has acquired connection for (192.168.0.102) [Sun May 06 14:40:33 2012] [debug] proxy_util.c(2067): proxy: connecting ajp://192.168.0.102:8008/bork/SSOIdentityProviderSoap to 192.168.0.102:8008 [Sun May 06 14:40:33 2012] [debug] proxy_util.c(2193): proxy: connected /bork/SSOIdentityProviderSoap to 192.168.0.102:8008 [Sun May 06 14:40:33 2012] [debug] proxy_util.c(2444): proxy: AJP: fam 2 socket created to connect to 192.168.0.102 [Sun May 06 14:40:33 2012] [debug] ajp_header.c(224): Into ajp_marshal_into_msgb [Sun May 06 14:40:33 2012] [debug] ajp_header.c(290): ajp_marshal_into_msgb: Header[0] [Accept-Encoding] = [gzip,deflate] [Sun May 06 14:40:33 2012] [debug] ajp_header.c(290): ajp_marshal_into_msgb: Header[1] [Content-Type] = [text/xml;charset=UTF-8] [Sun May 06 14:40:33 2012] [debug] ajp_header.c(290): ajp_marshal_into_msgb: Header[2] [SOAPAction] = [""] [Sun May 06 14:40:33 2012] [debug] ajp_header.c(290): ajp_marshal_into_msgb: Header[3] [User-Agent] = [Jakarta Commons-HttpClient/3.1] [Sun May 06 14:40:33 2012] [debug] ajp_header.c(290): ajp_marshal_into_msgb: Header[4] [Host] = [www.example.com] [Sun May 06 14:40:33 2012] [debug] ajp_header.c(290): ajp_marshal_into_msgb: Header[5] [Content-Length] = [520] [Sun May 06 14:40:33 2012] [debug] ajp_header.c(450): ajp_marshal_into_msgb: Done [Sun May 06 14:40:33 2012] [debug] mod_proxy_ajp.c(267): proxy: APR_BUCKET_IS_EOS [Sun May 06 14:40:33 2012] [debug] mod_proxy_ajp.c(272): proxy: data to read (max 8186 at 4) [Sun May 06 14:40:33 2012] [debug] mod_proxy_ajp.c(287): proxy: got 520 bytes of data [Sun May 06 14:40:33 2012] [debug] ajp_header.c(687): ajp_read_header: ajp_ilink_received 06 [Sun May 06 14:40:33 2012] [debug] ajp_header.c(697): ajp_parse_type: got 06 [Sun May 06 14:40:37 2012] [debug] proxy_util.c(1818): proxy: grabbed scoreboard slot 2 in child 5916 for worker ajp://192.168.0.100:8008/coding [Sun May 06 14:40:37 2012] [debug] proxy_util.c(1837): proxy: worker ajp://192.168.0.100:8008/coding already initialized [Sun May 06 14:40:37 2012] [debug] proxy_util.c(1934): proxy: initialized single connection worker 2 in child 5916 for (192.168.0.100) [Sun May 06 14:40:37 2012] [debug] proxy_util.c(1818): proxy: grabbed scoreboard slot 3 in child 5916 for worker http://192.168.0.102:8080 [Sun May 06 14:40:37 2012] [debug] proxy_util.c(1837): proxy: worker http://192.168.0.102:8080 already initialized [Sun May 06 14:40:37 2012] [debug] proxy_util.c(1934): proxy: initialized single connection worker 3 in child 5916 for (192.168.0.102) [Sun May 06 14:40:37 2012] [debug] proxy_util.c(1818): proxy: grabbed scoreboard slot 4 in child 5916 for worker ajp://192.168.0.102:8008/bork [Sun May 06 14:40:37 2012] [debug] proxy_util.c(1837): proxy: worker ajp://192.168.0.102:8008/bork already initialized [Sun May 06 14:40:37 2012] [debug] proxy_util.c(1934): proxy: initialized single connection worker 4 in child 5916 for (192.168.0.102) [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1934): proxy: initialized single connection worker 2 in child 5918 for (192.168.0.100) [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1818): proxy: grabbed scoreboard slot 3 in child 5918 for worker http://192.168.0.102:8080 [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1837): proxy: worker http://192.168.0.102:8080 already initialized [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1934): proxy: initialized single connection worker 3 in child 5918 for (192.168.0.102) [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1818): proxy: grabbed scoreboard slot 4 in child 5918 for worker ajp://192.168.0.102:8008/bork [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1837): proxy: worker ajp://192.168.0.102:8008/bork already initialized [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1934): proxy: initialized single connection worker 4 in child 5918 for (192.168.0.102) [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1818): proxy: grabbed scoreboard slot 2 in child 5917 for worker ajp://192.168.0.100:8008/coding [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1837): proxy: worker ajp://192.168.0.100:8008/coding already initialized [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1934): proxy: initialized single connection worker 2 in child 5917 for (192.168.0.100) [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1818): proxy: grabbed scoreboard slot 3 in child 5917 for worker http://192.168.0.102:8080 [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1837): proxy: worker http://192.168.0.102:8080 already initialized [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1934): proxy: initialized single connection worker 3 in child 5917 for (192.168.0.102) [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1818): proxy: grabbed scoreboard slot 4 in child 5917 for worker ajp://192.168.0.102:8008/bork [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1837): proxy: worker ajp://192.168.0.102:8008/bork already initialized [Sun May 06 14:40:38 2012] [debug] proxy_util.c(1934): proxy: initialized single connection worker 4 in child 5917 for (192.168.0.102) [Sun May 06 14:42:09 2012] [debug] ajp_header.c(687): ajp_read_header: ajp_ilink_received 04 [Sun May 06 14:42:09 2012] [debug] ajp_header.c(697): ajp_parse_type: got 04 [Sun May 06 14:42:09 2012] [debug] ajp_header.c(516): ajp_unmarshal_response: status = 200 [Sun May 06 14:42:09 2012] [debug] ajp_header.c(537): ajp_unmarshal_response: Number of headers is = 1 [Sun May 06 14:42:09 2012] [debug] ajp_header.c(599): ajp_unmarshal_response: Header[0] [Content-Type] = [text/xml;charset=utf-8] [Sun May 06 14:42:09 2012] [debug] ajp_header.c(609): ajp_unmarshal_response: ap_set_content_type done [Sun May 06 14:42:09 2012] [debug] ajp_header.c(687): ajp_read_header: ajp_ilink_received 03 [Sun May 06 14:42:09 2012] [debug] ajp_header.c(697): ajp_parse_type: got 03 [Sun May 06 14:42:09 2012] [debug] ajp_header.c(687): ajp_read_header: ajp_ilink_received 03 [Sun May 06 14:42:09 2012] [debug] ajp_header.c(697): ajp_parse_type: got 03 [Sun May 06 14:42:09 2012] [debug] ajp_header.c(687): ajp_read_header: ajp_ilink_received 05 [Sun May 06 14:42:09 2012] [debug] ajp_header.c(697): ajp_parse_type: got 05 [Sun May 06 14:42:09 2012] [debug] mod_deflate.c(615): [client 188.81.234.2] Zlib: Compressed 447 to 255 : URL /bork/SSOIdentityProviderSoap [Sun May 06 14:42:09 2012] [debug] mod_proxy_ajp.c(570): proxy: got response from (null) (192.168.0.102) [Sun May 06 14:42:09 2012] [debug] proxy_util.c(2029): proxy: AJP: has released connection for (192.168.0.102) [Sun May 06 14:42:09 2012] [info] [client 188.81.234.2] Request body read timeout Was wondering if any one could provide some advice, perhaps even point out any hideous, horrible configuration error? thanks in advance!

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• Cisco adaptive security appliance is dropping packets where SYN flag is not set

  - by Brett Ryan

  We have an apache instance sitting inside our DMZ which is configured to proxy requests to an internal NATed tomcat instance inside our network. It works fine, but then all of a sudden requests from apache to the tomcat instance stop getting through with the following in the apache logs: [error] (70007)The timeout specified has expired: ajp_ilink_receive() can't receive header Investigating into the Cisco log viewer reveals the following: Error Message %ASA-6-106015: Deny TCP (no connection) from IP_address/port to IP_address/port flags tcp_flags on interface interface_name. Explanation The adaptive security appliance discarded a TCP packet that has no associated connection in the adaptive security appliance connection table. The adaptive security appliance looks for a SYN flag in the packet, which indicates a request to establish a new connection. If the SYN flag is not set, and there is not an existing connection, the adaptive security appliance discards the packet. Recommended Action None required unless the adaptive security appliance receives a large volume of these invalid TCP packets. If this is the case, trace the packets to the source and determine the reason these packets were sent. All are machines are virtualised using VMware, and by default machines have been using the Intel E1000 emulated NIC. Our network administrator has changed this to a VMXNET3 driver in an attempt to correct the problem, we just have to wait and see if the problem persists as it's an intermittent problem. Is there something else that could be causing this problem? This isn't the first service where we have had similar issues. Our apache host is running Ubuntu 11.10 with a kernel version of 3.0.0-17-server. We have also had this issue on RHEL5 (5.8) running kernel 2.6.18-308.16.1.el5, this machine also has the E1000 NIC. NOTE: I am not a network administrator and am a software architect and analyst programmer responsible for these systems.

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• Header set Access-Control-Allow-Origin not working with mod_rewrite + mod_jk

  - by tharant

  My first question on here on SF so please forgive me if I manage to bork the post. :) Anyways, I'm using mod_rewrite on one of my machines with a simple rule that redirects to a webapp on another machine. I'm also setting the header 'Access-Control-Allow-Origin' on both machines. The problem is that when I hit the rewrite rule, I loose the 'Access-Control-Allow-Origin' header setting. Here's an example of the Apache config for the first machine: NameVirtualHost 10.0.0.2:80 <VirtualHost 10.0.0.2:80> DocumentRoot /var/www/host.example.com ServerName host.example.com JkMount /webapp/* jkworker Header set Access-Control-Allow-Origin "*" RewriteEngine on RewriteRule ^/otherhost http://otherhost.example.com/webapp [R,L] </VirtualHost> And here's an example of the Apache config for the second: NameVirtualHost 10.0.1.2:80 <VirtualHost 10.0.1.2:80> DocumentRoot /var/www/otherhost.example.com ServerName otherhost.example.com JkMount /webapp/* jkworker Header set Access-Control-Allow-Origin "*" </VirtualHost> When I hit host.example.com we see that the header is set: $ curl -i http://host.example.com/ HTTP/1.1 302 Moved Temporarily Server: Apache/2.2.11 (FreeBSD) mod_ssl/2.2.11 OpenSSL/0.9.7e-p1 DAV/2 mod_jk/1.2.26 Content-Length: 0 Access-Control-Allow-Origin: * Content-Type: text/html;charset=ISO-8859-1 And when I hit otherhost.example.com we see that it too is setting the header: $ curl -i http://otherhost.example.com HTTP/1.1 200 OK Server: Apache/2.0.46 (Red Hat) Location: http://otherhost.example.com/index.htm Content-Length: 0 Access-Control-Allow-Origin: * Content-Type: text/html;charset=UTF-8 But when I try to hit the rewrite rule at host.example.com/otherhost we get no love: $ curl -i http://host.example.com/otherhost/ HTTP/1.1 302 Found Server: Apache/2.2.11 (FreeBSD) mod_ssl/2.2.11 OpenSSL/0.9.7e-p1 DAV/2 mod_jk/1.2.26 Location: http://otherhost.example.com/ Content-Length: 0 Content-Type: text/html; charset=iso-8859-1 Can anybody point out what I'm doing wrong here? Could mod_jk be part of the problem?

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• Apache ProxyPass with SSL

  - by BBonifield

  I have a QA setup that consists of multiple internal development servers and one world-accessible provisioning machine that is setup to proxy pass the web traffic. Everything works fine for non-SSL requests, but I'm having a hard time getting the SSL logic working as well. Here's a few example vhost blocks. <VirtualHost 192.168.168.101:443> ProxyPreserveHost On SSLProxyEngine On ProxyPass / https://192.168.168.111/ ServerName dev1.site.com </VirtualHost> <VirtualHost 192.168.168.101:80> ProxyPreserveHost On ProxyPass / http://192.168.168.111/ ServerName dev1.site.com </VirtualHost> <VirtualHost 192.168.168.101:443> ProxyPreserveHost On SSLProxyEngine On ProxyPass / https://192.168.168.111/ ServerName dev2.site.com </VirtualHost> <VirtualHost 192.168.168.101:80> ProxyPreserveHost On ProxyPass / http://192.168.168.111/ ServerName dev2.site.com </VirtualHost> I end up seeing the following error in the provisioner's error log. [Fri Jan 28 12:50:59 2011] [warn] [client 1.2.3.4] proxy: no HTTP 0.9 request (with no host line) on incoming request and preserve host set forcing hostname to be dev1.site.com for uri / As well as the following entry in the destination QA machine's access log. 192.168.168.101 - - [22/Feb/2011:08:34:56 -0600] "\x16\x03\x01 / HTTP/1.1" 301 326 "-" "-"

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• Virtualmin: "PHP execution via fcgid requires the Apache mod_fcgid module"

  - by Josh

  I have a CentOS server with Virtualmin on it. I have configured PHP the way I want it, using Apache mod_fastcgi. However, when I click "Re-check Config" in Virtualmin, I get PHP execution via fcgid requires the Apache mod_fcgid module This post says to change Default PHP execution mode to CGI, but I can't find such an option anywhere!

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• Configure mod_wsgi WSGIScriptAlias with mod_rewrite

  - by Lazik

  I want to redirect ex.com to www.ex.com but I still want www.ex.com/ to point to my app.wsgi without it showing up in the url. When I use the conf below and I go to ex.com, I get a 404 error saying can't find www.ex.com/app.wsgi/ If I change the WSGIScriptAlias / /var/www/vhosts/ex/app.wsgi to WSGIScriptAlias /app.wsgi /var/www/vhosts/ex/app.wsgi Then all my url look like www.ex.com/app.wsgi/blabla/... Is it possible to use some kind of rule to redirect ex.com to www.ex.com and still keeping / as the app.wsgi root? my conf file <VirtualHost *:80> ServerName www.ex.com ServerAlias ex.com *.ex.com RewriteEngine On RewriteCond %{HTTP_HOST} !^www\. RewriteRule ^(.*)$ http://www.%{HTTP_HOST}/$1 [R=301,L] WSGIDaemonProcess ex user=www-data group=www-data processes=1 threads=5 WSGIScriptAlias / /var/www/vhosts/ex/app.wsgi <Directory /var/www/vhosts/ex> WSGIProcessGroup ex WSGIApplicationGroup %{GLOBAL} Order deny,allow Allow from all </Directory> </VirtualHost>

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• Mod_Proxy_AJP set up issues

  - by TripWired

  I'm trying to set up Tomcat behind Apache using mod_proxy_ajp. After tons of messing around with the configs I am stuck at a 403 page when trying to access tomcat. I had a 404 before but apparently something I changed along the way fixed that. I'm not sure which setting to change at this point. Could anyone look over the configs I have and see if anything is missing. httpd.conf <IfModule mod_proxy.c> ProxyRequests Off <Proxy *> Order deny,allow Deny from all Allow from localhost </Proxy> proxy_ajp.conf LoadModule proxy_ajp_module modules/mod_proxy_ajp.so # # When loaded, the mod_proxy_ajp module adds support for # proxying to an AJP/1.3 backend server (such as Tomcat). # To proxy to an AJP backend, use the "ajp://" URI scheme; # Tomcat is configured to listen on port 8009 for AJP requests # by default. # # # Uncomment the following lines to serve the ROOT webapp # under the /tomcat/ location, and the jsp-examples webapp # under the /examples/ location. # ProxyPass /tomcat ajp://127.0.0.1:8009/ ProxyPassReverse /tomcat ajp://127.0.0.1:8009/ ProxyPass /examples/ ajp://localhost:8009/jsp-examples/

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• Apache configuration to make NTLM authentication work through a Proxy

  - by Nick Pierpoint

  I'm running an application server behind an Apache proxy with the following sort of thing in my Apache config: ProxyPass /app http://myapplication:8080/myapp ProxyPassReverse /app http://myapplication:8080/myapp When I switch on NTLM authentication (using mod_ntlm) the authentication fails (it works fine when bypassing the proxy). A quick search reveals lots of issues when running NTLM behind a proxy due to the connection-specific NTLM specification. Does anyone have a working Apache configuration that allows NTLM authentication through a proxy? Thanks for any help.

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• Difference ProxyPass and RewriteRule

  - by Wesho

  I just came across a case where ProxyPass (ProxyPassMatch to be exact) is being used in an Apache configuration file. This mod_proxy rule is being used to proxy from a whole cluster to one specific server, when a certain file is requested which only resides on that server. Now I'm a bit confused since I can't grasp why something like this cannot be achieved using a RewriteRule. So in essence I want to ask: What is the difference between ProxyPassMatch and a RewriteRule in this case?

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• Apache mod_jk replacing mod_rewrite rules

  - by organicveggie

  We have a slightly complex Apache 2.2 setup in front of a Tomcat 6.0 instance. The main Tomcat webapp is deployed in: /opt/tomcat/webapps/ROOT But we also have static content that we update semi-regularly. We didn't want to force a new build and deploy of the webapp, so that's stored separately in folders like: /opt/tomcat/webapps/css /opt/tomcat/webapps/foo /opt/tomcat/webapps/bar To handle this from Apache, we use mod_rewrite and rules look something like the following: RewriteCond %{REQUEST_FILENAME} -f RewriteRule ^/css/(.*)$ - [L] RewriteCond ROOT/%{REQUEST_FILENAME} -f RewriteRule ^/css/(.*)$ ROOT/$1 [L] RewriteCond %{REQUEST_FILENAME} -f RewriteRule ^(.*)\.(jpg|png|html|js)$ - [L] RewriteCond ROOT/%{REQUEST_FILENAME} -f RewriteRule ^(.*)\.(jpg|png|html|js)$ - [L] RewriteRule ^/(.*)$ http://localhost:8080/$1 [P,L] ProxyPassReverse / http://localhost:8080/ I now think I might want to start using mod_jk and I have two questions: Is it even worth using mod_jk? I don't need load balancing. Is it even possible to handle the cases I outlined where the static content is referenced as "http://www.example.com/css/foo.css", but we don't know if it's located in the Tomcat webapp or in one of the static folders.

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• Apache mod_rewrite and mod_vhost_alias Virtual Hosts and %1

  - by Matt Wall

  I have put the main bits of my httpd.conf down below. I am using %1 to get the host field so I can dynamically add vhosts by just creating dns/folders. One problem is I need to reference this: HttpStreamingLiveEventPath "D:/FMSApps/%1" HttpStreamingContentPath "D:/FMSApps/%1" In Apache when I try say to do this: http://test.domain.com/hds-vod/myfile.mp4.f4m it sees the %1 in the logs, and fails. Apache gives me this: [error] mod_jithttp [403]: No access to D:/Content/%1/DefaultContent/eve.mp4 What I'm looking for is the D:/Content/%1/DefaultContent/eve.mp4 to become D:/Content/test/DefaultContent/eve.mp4 Anyone have any useful resources / hints etc. to help me? Meanwhile my Google searching continues...! Listen 80 ServerName main1.rtmphost.com AccessFileName .htaccess ServerSignature On UseCanonicalName Off HostnameLookups Off Timeout 120 KeepAlive On MaxKeepAliveRequests 100 KeepAliveTimeout 15 RewriteLogLevel 0 RewriteLog logs/rewrite.log DocumentRoot D:/Content LoadModule vhost_alias_module modules/mod_vhost_alias.so VirtualDocumentRoot "D:/Content/%1" RewriteEngine On <Directory /> Options None AllowOverride None Order allow,deny Allow from all Satisfy all </Directory> <IfModule f4fhttp_module> <Location /vod> HttpStreamingEnabled true HttpStreamingContentPath "D:/FMSApps/%1" Options FollowSymLinks </Location> Redirect 301 /live/events/livepkgr/events /hds-live/livepkgr <Location /hds-live> HttpStreamingEnabled true HttpStreamingLiveEventPath "D:/FMSApps/%1" HttpStreamingContentPath "D:/FMSApps/%1" HttpStreamingF4MMaxAge 2 HttpStreamingBootstrapMaxAge 2 HttpStreamingFragMaxAge -1 Options FollowSymLinks </Location> </IfModule>

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• How to use webdav and user dir in the same time in the same section ?

  - by Louis

  Dear community, i would like to mount trough webdav my https://myserver/~user_account but not https://myserver/. What i am doing now is : <IfModule mod_userdir.c> UserDir public_html UserDir disabled root <Directory /banonymous/data/home/*/public_html> DAV On AllowOverride FileInfo Limit AuthConfig Options MultiViews SymLinksIfOwnerMatch IncludesNoExec <Limit GET POST OPTIONS> Order allow,deny Allow from all </Limit> <LimitExcept GET POST OPTIONS> Order deny,allow Deny from all </LimitExcept> </Directory> </IfModule> and i am setting the authentification in the .htaccess of eache user. AuthType Basic AuthName "Password Required" AuthUserFile /etc/apache2/users/htpasswd Require User geeky It does not work. Is there someone who can tell me if it is possible ? and if it is how to do it. My dream would have been to put the Dav On in the .htaccess.

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• 502: proxy: pass request body failed

  - by Andrei Serdeliuc

  Sometimes I get the following error (in apache's error.log) when viewing my site over https: (502)Unknown error 502: proxy: pass request body failed to xxx.xxx.xxx.xxx:443 I'm not entirely sure what this is and why it happens, it's also not consistent. The request route is: Browser Proxy server (apache with mod_proxy + mod_ssl) Load balancer (aws) Web server (apache with mod_ssl) The configuration on the proxy server is as follows: <VirtualHost *:443> ProxyRequests Off ProxyVia On ServerName www.xxx.co.uk ServerAlias xxx.co.uk <Directory proxy:*> Order deny,allow Allow from all </Directory> <Proxy *> AddDefaultCharset off Order deny,allow Allow from all </Proxy> ProxyPass / balancer://cluster:443/ lbmethod=byrequests ProxyPassReverse / balancer://cluster:443/ ProxyPreserveHost off SSLProxyEngine On SSLEngine on SSLCipherSuite ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP:+eNULL SSLCertificateFile /var/www/vhosts/xxx/ssl/www.xxx.co.uk.cert SSLCertificateKeyFile /var/www/vhosts/xxx/ssl/www.xxx.co.uk.key <Proxy balancer://cluster> BalancerMember https://xxx.eu-west-1.elb.amazonaws.com </Proxy> </VirtualHost> Any idea what the issue might be?

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• What advantages does mod_evasive have over mod_security2 in terms of DDOS protection?

  - by Martynas Sušinskas

  Good day, I'm running an Apache2 server in front of a Tomcat and I need to implement a DDOS protection mechanism on the Apache2 layer. I have two candidates: mod_evasive and mod_security2 with the OWASP core rule set. Mod_security is already installed for overall protection, but the question is: is it worth adding mod_evasive besides mod_security just for the DDOS (does it have any major advantages) or the OWASP crs rules in the /experimental_rules/ directory (modsecurity_crs_11_dos_protection.conf) provide the same protection? Or it's just a matter of preference? The sites are not very high traffic normally. Thank you for your answers, Martynas

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• Passenger (mod-rails) can't find libopenssl-ruby

  - by flintinatux

  Trying to build an nginx server with Phusion Passenger on Ubuntu 11.10 (hurray for the new version!). Running "passenger-install-nginx-module" outputs the following error: * OpenSSL support for Ruby... not found With the following suggestion to fix it: * To install OpenSSL support for Ruby: Please run apt-get install libopenssl-ruby as root. Running "sudo apt-get install libopenssl-ruby" yields the following output: Reading package lists... Done Building dependency tree Reading state information... Done Note, selecting 'libruby' instead of 'libopenssl-ruby' libruby is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. A little research shows that libruby is a virtual package that provides libopenssl-ruby as part of the package. However, the passenger-install-nginx-module script still can't find it, and keeps throwing the same error. Help me, please! I'm in a little over my head on this one, and the google-the-error-code method that usually works is failing me today.

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