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• My VPS ubuntu server is very slow

  - by askmike

  I just installed a frech copy of Ubuntu 12.04 on my vps because my old installation was very slow, unfortunately this did not fix the problem. With slow I mean requests for my PHP websites take a long time, very slow (30 sec per request) to slow (3+ sec per request). When it's really bad SSH is also laggish. The websites are: askmike.org (pretty standard Wordpress) mvr.me (own PHP) slow? very slow: Here is a picture of loading a clean install of wordpress slow: here is a picture of loading a small PHP based website the vps The VPS has 256mb ram and an 25GB hdd. Besides serving the 2 small websites it isn't doing anything AFAIK. What have I installed Clean Ubuntu server 12.04 LAMP stack few things like git and nodejs (not using both) ossec (because I thought my server was getting hammered) munin What I already tried / done I installed munin so that I could watch io speed and such. The problem is that I don't know where to look for in the munin report. I checked logs and don't see anything strange (although I don't really know where to look for besides strange / repetitive errors and GET requests). I configured Apache MPM to: <IfModule mpm_prefork_module> StartServers 5 MinSpareServers 5 MaxSpareServers 10 MaxClients 40 MaxRequestsPerChild 0 </IfModule> (apache is using prefork, the default) Stats I copied the munin report as it appeared at 4:50 last night to a site hosted on a shared webhost. Note that tonight my mysql crashed somewhere after 1:00 (which is a new problem altogether), so therefor the graph for last night might look strange. Can anyone help me get my VPS up to normal speed? EDIT: Thanks for the replies. The VPS is 10 bucks a month and is from directvps.nl (Dutch host and I'm also dutch). I did two speed tests for disk IO: $ dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 1073741824 bytes (1.1 GB) copied, 23.1506 s, 46.4 MB/s $ dd if=/dev/zero of=test bs=64k count=16k conv=fdatasync 1073741824 bytes (1.1 GB) copied, 39.3796 s, 27.3 MB/s Anyway: how can I prove to my VPS host that it is to slow? I can understand a server being busy slowing a website down. But 5-30 sec loadtime for a normal PHP webpage?

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• Internal Server Error on HTTPS SSL URL

  - by spike5792

  I am running cPanel/WHM on Apache server and have just installed an SSL certificate for a single domain. Domain/server is on a fixed dedicated IP address. I'm given the 'successfully installed' message when installing the SSL certificate, however when trying to visit the domain using https, the 500 Internal Server Error message appears: The server encountered an internal error or misconfiguration and was unable to complete your request. Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.

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• mod_pagespeed using up too many resources?

  - by OC2PS

  I have found several threads from 2010 and early-2011 talking about excessive resource usage by mod_pagespeed I haven't seen any recent ones. I am facing excessive memory usage, which is causing server to crash several times a day. I am wondering if the issue was ever fixed before mod_pagespeed 1.0 was released. Also, request any tips and suggestion on how to fix the issue. My server configuration: 4 quad-core processors (likely oversold) 3GB memory Xen Centos 6 64-bit Apache cPanel PHP mySQL

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• Grab latest version of PHP by URL? [closed]

  - by luckytaxi

  I'm unable to find the directory listing of all PHP packages. I'm basically looking for the latest stable version of 5.3 utilizing some sort of script that will go out and check PHP's website. If I can get a directory listing (can't seem to find one), I can do the rest. Figured it out but seeing that someone else posted something similar but for Apache, he got blasted for puttig it on Stackoverflow. I figure I would save myself the trouble and post it here.

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• service monitaring manager for Ubuntu ?

  - by mgpyone

  my mate told me that there's a tool to manage services in Ubuntu . System > Administration > Services. but unfortunately, I don't found it in my Ubuntu (9.10). Thus, is it easy to get it ? If not, is there any alternative GUI programs to manage services ( like mysql, apache and so forth) ?

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• Reverse Proxy that does not buffer uploads

  - by tsuraan

  From what I've seen of various reverse proxies (nginx, apache, varnish), they seem to buffer file uploads to disk before handing them off to the service they're proxying for. I need a reverse proxy that doesn't do this; I have a system that handles uploads itself, and buffering uploaded files to disk is not something that works for me. Does anybody know of a proxy server that can be configured to just pass traffic through to the proxied services without doing any buffering to disk?

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• assign user and group to site log files

  - by Francis

  When in a site apache conf file, is there a way to set the user and group for the CustomLog and ErrorLog? Right now, these 2 records create the error and access log with root:root permissions, but I would like them to be flewis:admin CustomLog /var/log/httpd/domain.com-access.log combined ErrorLog /var/log/httpd/domain.com-error.log If I change the user:group of the files, when the logs rotate, the new logs are root:root

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• SHH running two commands at once?

  - by matthewsteiner

  So I want to run apache benchmark but while it's running, I need to run htop to see the memory and cpu usage. How can I do that? Putty (My ssh client) won't let me type in a command until ab is done running. Ideas?

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• Why is my concurrency capacity so low for my web app on a LAMP EC2 instance?

  - by AMF

  I come from a web developer background and have been humming along building my PHP app, using the CakePHP framework. The problem arose when I began the ab (Apache Bench) testing on the Amazon EC2 instance in which the app resides. I'm getting pretty horrendous average page load times, even though I'm running a c1.medium instance (2 cores, 2GB RAM), and I think I'm doing everything right. I would run: ab -n 200 -c 20 http://localhost/heavy-but-view-cached-page.php Here are the results: Concurrency Level: 20 Time taken for tests: 48.197 seconds Complete requests: 200 Failed requests: 0 Write errors: 0 Total transferred: 392111200 bytes HTML transferred: 392047600 bytes Requests per second: 4.15 [#/sec] (mean) Time per request: 4819.723 [ms] (mean) Time per request: 240.986 [ms] (mean, across all concurrent requests) Transfer rate: 7944.88 [Kbytes/sec] received While the ab test is running, I run VMStat, which shows that Swap stays at 0, CPU is constantly at 80-100% (although I'm not sure I can trust this on a VM), RAM utilization ramps up to about 1.6G (leaving 400M free). Load goes up to about 8 and site slows to a crawl. Here's what I think I'm doing right on the code side: In Chrome browser uncached pages typically load in 800-1000ms, and cached pages load in 300-500ms. Not stunning, but not terrible either. Thanks to view caching, there might be at most one DB query per page-load to write session data. So we can rule out a DB bottleneck. I have APC on. I am using Memcached to serve the view cache and other site caches. xhprof code profiler shows that cached pages take up 10MB-40MB in memory and 100ms - 1000ms in wall time. Pages that would be the worst offenders would look something like this in xhprof: Total Incl. Wall Time (microsec): 330,143 microsecs Total Incl. CPU (microsecs): 320,019 microsecs Total Incl. MemUse (bytes): 36,786,192 bytes Total Incl. PeakMemUse (bytes): 46,667,008 bytes Number of Function Calls: 5,195 My Apache config: KeepAlive On MaxKeepAliveRequests 100 KeepAliveTimeout 3 <IfModule mpm_prefork_module> StartServers 5 MinSpareServers 5 MaxSpareServers 10 MaxClients 120 MaxRequestsPerChild 1000 </IfModule> Is there something wrong with the server? Some gotcha with the EC2? Or is it my code? Some obvious setting I should look into? Too many DNS lookups? What am I missing? I really want to get to 1,000 concurrency capacity, but at this rate, it ain't gonna happen.

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• recommend a host for .NET+ffmpeg+MySql+UrlRewrite?

  - by acidzombie24

  I need a host that supports the following ffmpeg (for audio) + oggenc which i found online MySql server (my code doesnt like MS SQL) Url rewriting. One server i tried didnt support /path/title because there was no .aspx and they did not allow modification to server since it was shared I configured apache in the past and was clueless with win server 08rc2. I prefer not to configure my own server. Also i am trying to keep the hosting price

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• Local dns for testing websites using mobile devices

  - by Morpheu5

  Hi. I have no idea where to start from so sorry in advance if this topic has already been discussed. I usually develop web sites using my laptop as a development server, and recently I needed to test a web site using various mobile devices that can connect via wifi. Having no real AP, I set up a ad-hoc network using my laptop's wireless card and the devices can correctly browse the Internet and access the laptop's web server. The setup is as follows: subnet: 192.168.1.0/24 gateway to the Internet (wired adsl router/modem): 192.168.1.1 laptop: 192.168.1.64 (eth0, wired if connected to the gateway) and 192.168.1.32 (eth1, wifi if somewhat bridged to eth0) mobile devices (same for all, I only use one of them at any time for simplicity): 192.168.1.11 with default gw 192.168.1.1 Now, if I open either 192.168.1.32 or 192.168.1.64 from the mobile devices, I correctly get the default host of my Apache configuration. However I usually work with virtual hosts for many practical reasons, one of which being Drupal's peculiar implementation of multi-sites. For those who don't know how this works, Drupal takes the request's hostname and searches into its sites/ subdirectories for an appropriate configuration file. So, for example, suppose I request www.example.com, then Drupal would search for a config file in the following directories: sites/www.example.com/ sites/example.com/ sites/com/ sites/default/ So I decided to adopt the following style of virtual hosts: if the website I'm working on will be accessible using www.example.com I set up a sites/www.example.com/ directory and create a virtual host for local.www.example.com so Drupal have no trouble finding it. I've been told this is suboptimal from a dns point of view since I'd have to create an authoritative entry for example.com and turn Bind on only when I'm supposed to access the local copy, which is weird. However, if this is the only path I can follow, I still have some problems with Bind's configuration, as I couldn't find any guide that tells me in a clear, noob-friendly way, how to set up such an entry. On the other hand, I was wondering if I could set up an authoritative entry for local, so I could access www.example.com.local and tell in some way (which I don't even know if this is possible) Apache to put www.example.com instead of www.example.com.local in the relevant environment variable. Anyway, I have a last problem, sort of: when I launch Bind in debug mode with high verbosity, and make 192.168.1.32 as the primary dns for the devices, the output doesn't say anything about requests being made from the devices to Bind, so I'm not even sure it comes into play. As you can see, I'm a complete noob at these matters, but I'm eager to learn, so any help/pointer will be appreciated.

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• vBulletin 5 + lighthttpd url rewriting

  - by Boots

  I'm trying to get vBulletin 5 up and running under lighttpd but I'm having some problems with url rewriting. Here is the apache .htaccess provided by vBulletin. <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php?routestring=$1 [L,QSA] #needed because admincp is an actual directory. RewriteRule ^(admincp/)$ index.php?routestring=$1 [L,QSA] </IfModule> If this helps, this is the IIS config provided by vBulletin <?xml version="1.0" encoding="UTF-8"?> <!-- This file is to support redirection in IIS. It is harmless if you are running under Apache --> <configuration> <system.webServer> <rewrite> <rules> <rule name="Main Redirect" stopProcessing="true"> <match url="^(.*)$" ignoreCase="false" /> <conditions logicalGrouping="MatchAll"> <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" negate="true" /> <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" /> </conditions> <action type="Rewrite" url="index.php/{R:1}" /> </rule> <rule name="Admincp" stopProcessing="true"> <match url="^(admincp/)$" ignoreCase="false" /> <action type="Rewrite" url="index.php/{R:1}" /> </rule> </rules> </rewrite> </system.webServer> </configuration> Anyone have any suggestions as to the lighttpd url.rewrite equivalent? All my experiments have failed thus far. I'm running lighttpd-1.4.31-1 I tried this but it didn't work. I think it has something to do with me not properly emulating [QS] in the .htaccess url.rewrite-once = ("^(.*)$" => "index.php?routestring=$1", "^(admincp/)$)" => "index.php?routestring=$1") This has gotten me closer but not fully functional yet. url.rewrite-if-not-file = ("^(.*)$" => "index.php?routestring=$1", "^(admincp/)$)" => "index.php?routestring=$1")

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• Custom settings with PHP on Nginx

  - by miki

  I have multiple websites setup using Nginx and Apache, but when I try to add a vhost based PHP directive using fastcgi_param PHP_VALUE , the value get added to all of my vhosts. Checking the value of the PHP parameter from PHP-CLI remain the actual one for whole server. e.g. I used fastcgi_param PHP_VALUE "memory_limit=512M" for a domain based nginx config, but it will be propagated to all domains on server. The 'php -i | grep memory_limit' show 128M though Not sure what I am missing

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• VMWare/Ubuntu development stack with symlink to Windows 7

  - by wdhilliard

  I would like to use a vm ubuntu installation as my testing environment, but to ease workflow, I have symlinked /var/www to a windows share. Everything looks good when browsing files and the owner and group both are showing up as www-data, but I can not seem to get apache to respond with anything other than permission denied. Obviously there are still some permission issues between Windows 7 and Ubuntu, but I don't know where to go

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• vBulletin 5 + lighttpd url rewriting

  - by Boots

  I'm trying to get vBulletin 5 up and running under lighttpd but I'm having some problems with url rewriting. Here is the apache .htaccess provided by vBulletin. <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php?routestring=$1 [L,QSA] #needed because admincp is an actual directory. RewriteRule ^(admincp/)$ index.php?routestring=$1 [L,QSA] </IfModule> If this helps, this is the IIS config provided by vBulletin <?xml version="1.0" encoding="UTF-8"?> <!-- This file is to support redirection in IIS. It is harmless if you are running under Apache --> <configuration> <system.webServer> <rewrite> <rules> <rule name="Main Redirect" stopProcessing="true"> <match url="^(.*)$" ignoreCase="false" /> <conditions logicalGrouping="MatchAll"> <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" negate="true" /> <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" /> </conditions> <action type="Rewrite" url="index.php/{R:1}" /> </rule> <rule name="Admincp" stopProcessing="true"> <match url="^(admincp/)$" ignoreCase="false" /> <action type="Rewrite" url="index.php/{R:1}" /> </rule> </rules> </rewrite> </system.webServer> </configuration> Anyone have any suggestions as to the lighttpd url.rewrite equivalent? All my experiments have failed thus far. I'm running lighttpd-1.4.31-1 I tried this but it didn't work. I think it has something to do with me not properly emulating [QS] in the .htaccess url.rewrite-once = ("^(.*)$" => "index.php?routestring=$1", "^(admincp/)$)" => "index.php?routestring=$1") This has gotten me closer but not fully functional yet. url.rewrite-if-not-file = ("^(.*)$" => "index.php?routestring=$1", "^(admincp/)$)" => "index.php?routestring=$1")

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• Restarting services shortcut on FreeBSD

  - by eugene y

  I want to start/stop services from /usr/local/etc/rc.d in the RHEL way, e.g. service apache restart service mysql restart How can I set this up on FreeBSD?

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• define variable in linux that can be access in php

  - by sweb

  I add a variable in whole linux varibale in /etc/profile export MYNAME="My Value" how can i access this value in php source code during run via apache web server? in $_SERVER this value doesn't exist. just this keys appear on $_ENV: _ENV["APACHE_RUN_DIR"] /var/run/apache2 _ENV["APACHE_PID_FILE"] /var/run/apache2.pid _ENV["PATH"] /usr/local/bin:/usr/bin:/bin _ENV["APACHE_LOCK_DIR"] /var/lock/apache2 _ENV["LANG"] C _ENV["APACHE_RUN_USER"] www-data _ENV["APACHE_RUN_GROUP"] www-data _ENV["APACHE_LOG_DIR"] /var/log/apache2 _ENV["PWD"] /

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• We are moving to two servers from one server due to performance issues. How do we monitor the value of this change?

  - by MikeN

  We are moving to two servers from one server due to performance issues. We are moving our MySQL DB to its own dedicated server and will keep the original machine as the front end machine running nginx/apache (Django backend.) How do we monitor the value of this change? It is possible our whole site could actually get slower since the MySQL queries will be going out over a secure remote connection instead of locally?

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• How do I set default group ownership for files in a directory?

  - by tnichols

  I am running a cakephp webapp on Linode LAMP. I am finding that my temp files are created with root:root ownership. But the webapp is running with Apache's permissions (www-data). This causes warnings any time there is a new file created because it is not writable for user www-data. How do I change the default ownership to www-data on any new files created in the temp folder? Thanks for your help!

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• How many Tomcat instances can one application server handle?

  - by NetworkUser

  My network engineer states I am part of a cluster where two apache application servers(512G RAM each) have 142 instances each of Tomcat (of which my company represents 6 each with 2G RAM). This seems like a lot and my latency issues move with the hour of the day - 7AM CST software functions fine, 10AM CST - system slows significantly this slowness continues until 6PM CST. My question is how many Tomcat instances can one application server handle?

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• which linux flavour should I use to for my hosting server?

  - by rabbit

  Hi, We plan to host our website on a linux server. The site is created using java based technologies and will run on multiple instances of tomcat with apache in the front. I want to go in for a 64 bit linux OS so that I can install 64bit jvm. So my options are : Ubuntu Fedora CentOS which one (and which version) would be the most stable?

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• What are your favorite open source tools? (that are not very famous)

  - by sucuri

  I believe every system administrator is used to open source by now. From Apache to Firefox or Linux, everyone uses it at least a little bit. However, most open source developers are not good in marketing, so I know that there are hundreds of very good tools out there that very few people know. To fill this gap, share your favorite open source tool that you use in your day-to-day work that is not very famous. *I will post mine in the comments.

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• What kind of scaling method is it, when you add new software to a single server to handle more users? [on hold]

  - by Phil

  I have read about scaling (in terms of terminology and methods). This got me confused about the following: On a single computer, running a web server (say apache), if the system administrator adds a front, caching, reverse-proxy such as Varnish, which in that scenario increase the amount of requests this server is able to handle. My question: Setting up such cache increases the capacity of the server to handle work, hence scales it, but without increasing neither the amount of nodes or the node's capacity. What is the name for this type of scaling?

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• Tomcat SSL Fails SSL-LABS Sacan

  - by Wilmer

  I have installed an SSL for power2process.net but when i scan it with SSL-labs it ails for PCI compliancy: SSL_labs Scan Here is the portion of my SSL Connector in the server.xml Connector port="443" maxhttpheadersize="8192" address="127.0.0.1" enablelookups="false" protocol="org.apache.coyote.http11.Http11Protocol" disableUploadTimeout="true" acceptCount="100" slProtocol="SSLv3+TLSv1" ciphers="SSL_RSA_WITH_RC4_128_MD5,SSL_RSA_WITH_RC4_128_SHA,SSL_DHE_RSA_WITH_3DES_EDE_CBC_SHA" maxThreads="150" connectionTimeout="20000" SSLEnabled="true" scheme="https" secure="true" keystoreFile="/export/home/webadm/tomcat/conf/.keystore" keystorePass="*******" clientAuth="true" URIEncoding="UTF-8" compression="on"/> the JRE version is "1.6.0_10"

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• Amazon EC2, still cant ping or "http" it

  - by DarkFire21

  I am new at Amazon Cloud technologies. I ve set up an Amazon Linux instance created my keys and assigned elastic IP. Also, I opened all TCP, UDP, ICMP ports(ok, it's very dangerous, but I am using it for test purposes). I ve also installed Apache server and enabled it. But still cant ping or access my instance via IP. Any ideas? EDIT: Please see a screenshot of the security groups settings. All ports are open... Check this out

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