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• file downloaded via firefox and curl have different size

  - by Arash Mousavi

  When I download a file from this link by Firefox its size is 74580 B, But when I download it by curl with exactly all of header was sent by Firefox its size is 79891 B (I copied all header from Firefox and paste it in curl command). what is the problem? If you need any additional data ask me in comment. My curl command: curl --header 'Host: members.tsetmc.com' --header 'User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:29.0) Gecko/20100101 Firefox/29.0' --header 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' --header 'Accept-Language: en-US,en;q=0.5' --header 'Referer: http://www.tsetmc.com/Loader.aspx?ParTree=15131F' --header 'Cookie: ASP.NET_SessionId=pwzbckbdpjlzqj45vcdbd455' --header 'Connection: keep-alive' 'http://members.tsetmc.com/tsev2/excel/MarketWatchPlus.aspx?d=0' -o 'MarketWatchPlus-1393_3_14.xlsx' -L

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• SSL client auth in nginx with multiple server section

  - by Bastien974

  I want to implement ssl_verify_client in nginx. This works perfectly when I only have one server section, which listen to 443. In my case I have multiple, all listening on 443 but to different server_name. For one particular server (proxy.mydomain.com), I'm adding the SSL client verify, but when I test the connectivity with openssl s_client -connect proxy.mydomain.com:443 -cert xxx.crt -key xxx.key and then do a GET / HTTP/1.1 host: proxy.mydomain.com It's not working, 400 No required SSL certificate was sent I think nginx is not receiving the proper server_name and is directing it to the first server listening to 443. So I tried to listen on another port and it worked right away. What's the issue and how can I fix it ?

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• Simple dig output?

  - by knocte

  In a script I want to be able to write an IP address to somewhere easily, so I thought using dig (or a similar command) with back-ticks. However the simplest output I've been able to come up to wrt dig parameters is > dig -t A +noall +answer www.google.com www.google.com. 300 IN A 173.194.66.106 www.google.com. 300 IN A 173.194.66.104 Any way (extra arg, different tool instead of dig?) to get rid of the junk apart from the IP address?? (And please don't tell me to use sed.) Thanks

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• What's Excel formats are (most) compatible with LibreOffice and Google Docs?

  - by iconoclast

  I use Excel (and occasionally Numbers), but I want to be able to share with users of Google Docs and LibreOffice (and I may want to switch in the future). What's the most compatible format to save my Excel spreadsheets in? I'm asking as a question here rather than merely Googling for a list of formats that LibreOffice and GoogleDocs support (although I'm doing that too, and will post the answer if no one else does) because there are likely to be hidden "gotchas" that only someone who has experience using all of the above applications is going to know about. Answers that include personal experience will be preferred over those that only post a link to the relevant facts on google.com and libreoffice.com. Oh, and of course the other reason I'm asking the question is because it's good to have this info readily available on SuperUser.com for anyone else who wants to know the same thing.

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• Have an iPad's viewable area visible on your computer monitor for remote web-meeting training?

  - by MikeN

  I want to demo the usage of my iPad on my computer screen so that I can transmit it to other people during a training session using a web conference tool (like dimdim.com, gotomeeting.com, fuzemeeting.com, etc...) Is there a way to stream an iPad's display to a computer so it would be visible in such a screen casting software? My current ad-hoc solution for this would be to use a webcam to livecast me using a physical (real life) iPad and broadcast that to other users for training. This is undesirable due to the difficulty in really seeing the iPad well. So I'm hoping someone has a way to do: 1) Video output the iPad's display to my computer screen. 2) Emulate an iPad with a installed app (not having the source code) on the screen.

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• Good set of web hosting permissions?

  - by Jorge Israel Peña

  Hey guys, I just got a linode and I'm in the process of configuring it. It's running nginx with php-fpm and passenger. nginx was compiled and is running as user nginx. php-fpm (php with fastcgi process manager) is running as www-data (in group www-data). My sites are currently in /var/www, so for example /var/www/test.com I'm just wondering what the general 'flow' of things is. So for example, /var/www is owned by root, should I chown of /var/www/test.com to nginx or www-data? Or should I put nginx in the www-data group? How should site uploading work, I just transfer files to the /var/www/test.com directory as root (sudo) and then chown -R www-data:www-data .? Thanks. I'm capable of figuring things out on my own, I'm just wondering what the typical/general way of handling users/groups/permissions/site-files is on linux with a webserver.

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• How to setup Wordpress High Availability

  - by Ketam

  I have installed Galera Cluster on 3 cluster + 1 management. I wanted to make it like this, Server1: Home (www.domain.com) Server2: For BBpress/Forum (Forum Tab Menu will forward to forum.domain.com) Server3: BuddyPress Activity (Social Tab Menu will forward to social.domain.com) The purpose I am doing this is to distribute my resource and load balancing each other at same time. However, I have difficulty to setup Apache Load-Balancing/mod_proxy/clustering or any suitable to have high availability WordPress. Any best suggestion/solution to make high availability WordPress? Or how to? And another question is I tried to copy whole WordPress files & folders to Server2 connecting to local database (same data inside since it is already on Galera Cluster) but the page blank. Any advice? OS: Centos 6.2 Thanks in advanced.

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• apt-get for a package with when "contrib/source/Sources" is not found correctly

  - by Stuart Woodward

  I tried to install Webmin on Ubuntu by following the instructions on http://www.webmin.com/deb.html. Using the Update Manager GUI I added the repositories and the key deb http://download.webmin.com/download/repository sarge contrib deb http://webmin.mirror.somersettechsolutions.co.uk/repository sarge contrib However when I do an: apt-get update apt-get install webmin I get the error: W: Failed to fetch http://download.webmin.com/download/repository/dists/sarge/Release Unable to find expected entry 'contrib/source/Sources' in Release file (Wrong sources.list entry or malformed file) W: Failed to fetch http://webmin.mirror.somersettechsolutions.co.uk/repository/dists/sarge/Release Unable to find expected entry 'contrib/source/Sources' in Release file (Wrong sources.list entry or malformed file) Looing at the page at the URL I can see: 7029066c27ac6f5ef18d660d5741979a 20 contrib/source/Sources.gz Is the error caused by the fact that the Sources are compressed with gzip or am I doing something wrong?

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• Cant register this user

  - by holgero

  I wanted to ask this question on meta, but it said, I have to log in first (which is where I have the problem!) I answered a question with this user. But when I tried to register and click on the stack exchange icon, it only displays three dots (animated) and never comes back. I suspected a firefox problem so I tried firefox on windows: And yes, I was able to create an account linked with my other accounts ( http://unix.stackexchange.com/users/27867/holgero and http://stackoverflow.com/users/1779245/holgero ) when I ran the latest firefox version under windows 7 in a virtual box. Then I upgraded my linux firefox to the newest version and deleted the other account under windows again. But still I cannot register this account ( http://superuser.com/users/177338/holgero ). On unix.stackexchange or stackoverflow I never had any problems with the registration, superuser seems to be different. So, how do I register this user and have it linked with my other stackexchange accounts?

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• How do I update my servers' domain name for Reverse DNS?

  - by Jeff

  I'm updating my mail servers' rDNS and I think I have it all figured out except for one thing. When I installed my OS (Debian Etch), the installer asked me to enter the "domain name". Is the "domain name" updated by using the hostname command? If so, which config file(s) are updated when using the hostname command? If not, how do I change my servers' domain name? My current /etc/hosts: 127.0.0.1 localhost 67.228.178.164 mrspock.example-old.com mrspock My current /etc/hostname: mrspock $ hostname -f mrspock.example-old.com I need to update hostname -f to be mrspock.example-new.com.

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• How to stick my changes in httpd.conf on WHM/Cpanel/EasyApache

  - by Seiti

  I'm setting up a server and trying to configure the Apache. It only needs to work as a frontend to Tomcat. To do that I added some instructions to the VirtualHost directive, using mod_proxy: <VirtualHost *> ServerName myserver.domain.com ProxyRequests Off ProxyPass / http://myserver.domain.com:8080/ ProxyPassReverse / http://myserver.domain.com:8080/ </VirtualHost> It works fine, and if the need comes, I´ll use mod_jk. But, how do I do it the right way using easyapache, and stop it to always rewrite my changes.

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• Configuring Bind9 on ubuntu

  - by Jerry

  I am trying to configure name server on Ubuntu just for learning. I have followed this tutorial. After configuring bind9 I have restarted it and works well. I have no registered domain name and public IP, so I have used a random domain name(khalidiitdu.com) that is not registered. When I dig khalidiitdu.com, it shows status: NXDOMAIN. If I use nslookup command, it shows ** server can't find khalidiitdu.com: NXDOMAIN. Now question is: Is registered domain mandatory to configure bind9 within a LAN? If not please suggest me alternative ways. Thanks.....

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• Blocking non-virtual host access in Apache?

  - by cmbrnt

  I'm running an apache-server, with a bunch of virtual hosts for about seven domain names. Now I'd like to disallow access for clients who try to access my server using only its IP-adress. So: When someone accesses my website through www.domain.com, they reach the site hosted in /var/www/domain.com/public_html/. When someone enters the ip-address of the server they reach a 403 Forbidden-message. The problem with this is that they are theoretically able to reach my other sites through bruteforce, when getting http://11.22.33.44/domain.com/public_html/. I rather want them to reach a 403 Forbidden all the time, as long as they don't access my server by a valid domain name. How do I solve this problem?

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• PHP does not allow https connections

  - by FunkyChicken

  Hey guys im running PHP 5.4.0 and I cannot cURL nor files_get_content() https connections. Using curl in a PHP script shows: [root@ns1]# /opt/php/bin/php -q test.php * About to connect() to www.google.com port 443 * Trying 74.125.225.210... * connected * Connected to www.google.com (74.125.225.210) port 443 * successfully set certificate verify locations: * CAfile: /etc/pki/tls/certs/ca-bundle.crt CApath: none Segmentation fault Using file_get_contents() shows: Warning: file_get_contents(): Unable to find the wrapper "https" - did you forget to enable it when you configured PHP? in /test.php OpenSSL and OpenSSL-devel are installed, and PHP is also configured with cURL support for SSL connections. See: http://i.imgur.com/ExAIf.png Any idea what might be going wrong? Further info: CentOS 5.8(64) with Nginx 1.2.4

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• AWS autoscaling. Launch Config/Auto Scaling Group and VPC instance with two ifaces

  - by icalvete

  I want create an Launch Config/Auto Scaling Group to build instances inside an VPC with two subnets ("frontend" and "backend") I need that this instances have two ifaces. One in "frontend" subnet and one in "backend" subnet. I can't see how do that. It's no posible from AWS console and neither with aws cli. http://docs.aws.amazon.com/cli/latest/reference/autoscaling/create-launch-configuration.html http://docs.aws.amazon.com/cli/latest/reference/autoscaling/create-auto-scaling-group.html Launch Config don't say nothing about this. http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/create-lc-with-instanceID.html Ideas? Thanks!!!

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• Issue with https:// url going to an unknown location

  - by Brandon

  We have a website (ASP.NET/Plesk 9.5.5) that can be accessed just fine through the regular URL (http://example.com). However when accessing the site through https://example.com the site displays the invalid security certificate warning, which is fine since we don't have an SSL certificate. If I add an exception, I'm sent to a completely separate site that is apparently hosting a malware script (I'm still on https://example.com though). Because of this Google has flagged the site as dangerous. I can't find anything in the Plesk panel that would help fix this, and as far as I can tell those files don't exist on our server. How do I tell where the https:// link is sending me? I'm not that familiar with DNS, but is that what is causing this behavior?

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• embedded tomcat 7 behind iis 7.5 proxy ssl problems

  - by user1058410

  I'm using embedded tomcat 7 behind a iis 7.5 proxy server, with requests being forwarded to tomcat with arr. Everything works fine unless iis is set to require ssl. Then things like links that are generated dynamically in .jsp files on tomcat don't work right. For example if a link is supposed to point to _https://somewhere.com:443 it will be wrote as _http://somewhere.com:8080 (8080 is the port tomcat is running on). The problem seems to come from when tomcat looks at itself to build out the url it sees correctly that it is running on _http://somewhere.com:8080, but i need it to think otherwise. Does anybody know how to accomplish this without using ssl between iis and tomcat? Sorry for the underscores in front of the imaginary urls.

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• Two SSL certs for a domain in DirectAdmin

  - by Bart van Heukelom

  If I were to get 2 SSL certificates, one for example.com and one for www.example.com, is there a way to install them both on the site example.com in DirectAdmin? The default interface only allows installing one for both versions. If not, can I separate the 2 domains into 2 sites? One of them would only be a redirection, so there wouldn't be any duplication of site files. (Please don't answer with "one certificate should work for both". It doesn't always. This is a DirectAdmin question)

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• configuring linux server to send traffic to local machines using local IP address

  - by gkdsp

  Two linux servers, server1 and server2, are on the same local network (they also have access to an external network). Server2 has a local IP of 192.168.0.2 and a host name of host2.mydomain.com. QUESTION 1: If an application on server1 sends traffic to server2 using a host name of host2.mydomain.com, what determines whether this traffic is routed to server2 using the local or external network? QUESTION 2: To ensure that all traffic sent from server1 to server2 always uses the local network, could I simply include in the server1 /etc/hosts file the following? 192.168.0.2 host2.mydomain.com ...the thinking being, if the servers are always on the same network there should never be a need for server2 to send traffic to server1 via the external network (that I can think of anyway). Is this done in practice, or is some other method preferred?

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• IE8/IE7/IE6/IE5 on WinXP Use The Wrong Certificate

  - by Marco Calì

  For some reason IE8/IE7/IE6/IE5 on Windows XP, instead to use the certificate that is listed on the nginx website config, is using another certificate that is used from other websites. Checking the nging config file for the website everything is fine. A confirm of this is that all the other browsers (Chrome/Firefox/Safari/IE9) are using the correct certificate. This is the nginx configuration for the app: server { listen 80; listen 443 ssl; server_name mydomain.com; ssl_certificate /root/certs/mydomain.com/mydomain.bundle.crt; ssl_certificate_key /root/certs/mydomain.com/mydoamin.key; access_log /opt/webapps/cs_at/logs/access.log; location / { add_header P3P 'CP="CAO PSA OUR"'; proxy_pass http://127.0.0.1:20004; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $remote_addr; proxy_set_header X-Real-IP $remote_addr; } }

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• How to host multiple subdomain on another server

  - by Azrim

  Hi all, I have one webserver and one Application server. Webserver1 have FreeBSD 8.1, Apache, MySQL and PHP. Application1 server have Centos 5.5, Apache, Mysql and PHP. Both server running fine independently. My webserver1 is hosting my company website www.azrim.com which running good. Besides I have 2 online application which requires me to host them as a subdomains. My questions is I want to make subdomains such as abc.azrim.com and xyz.azrim.com is accesscible from Application1 server. Can anyone pls help me on this. What should I do on apaches configuration on both webserver1 and Apps1 server. I only have 1 NIC card on my Apps1 server. Really appreciate anyone who got the solution. Thanks Azrim

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• Nginx + PHP-FPM on Centos 6.5 gives me 502 Bad Gateway (fpm error: unable to read what child say: Bad file descriptor)

  - by Latheesan Kanes

  I am setting up a standard LEMP stack. My current setup is giving me the following error: 502 Bad Gateway This is what is currently installed on my server: Here's the configurations I've created/updated so far, can some one take a look at the following and see where the error might be? I've already checked my logs, there's nothing in there (http://i.imgur.com/iRq3ksb.png). And I saw the following in /var/log/php-fpm/error.log file. sidenote: both the nginx and php-fpm has been configured to run under a local account called www-data and the following folders exits on the server nginx.conf global nginx configuration user www-data; worker_processes 6; worker_rlimit_nofile 100000; error_log /var/log/nginx/error.log crit; pid /var/run/nginx.pid; events { worker_connections 2048; use epoll; multi_accept on; } http { include /etc/nginx/mime.types; default_type application/octet-stream; # cache informations about FDs, frequently accessed files can boost performance open_file_cache max=200000 inactive=20s; open_file_cache_valid 30s; open_file_cache_min_uses 2; open_file_cache_errors on; # to boost IO on HDD we can disable access logs access_log off; # copies data between one FD and other from within the kernel # faster then read() + write() sendfile on; # send headers in one peace, its better then sending them one by one tcp_nopush on; # don't buffer data sent, good for small data bursts in real time tcp_nodelay on; # server will close connection after this time keepalive_timeout 60; # number of requests client can make over keep-alive -- for testing keepalive_requests 100000; # allow the server to close connection on non responding client, this will free up memory reset_timedout_connection on; # request timed out -- default 60 client_body_timeout 60; # if client stop responding, free up memory -- default 60 send_timeout 60; # reduce the data that needs to be sent over network gzip on; gzip_min_length 10240; gzip_proxied expired no-cache no-store private auth; gzip_types text/plain text/css text/xml text/javascript application/x-javascript application/xml; gzip_disable "MSIE [1-6]\."; # Load vHosts include /etc/nginx/conf.d/*.conf; } conf.d/www.domain.com.conf my vhost entry ## Nginx php-fpm Upstream upstream wwwdomaincom { server unix:/var/run/php-fcgi-www-data.sock; } ## Global Config client_max_body_size 10M; server_names_hash_bucket_size 64; ## Web Server Config server { ## Server Info listen 80; server_name domain.com *.domain.com; root /home/www-data/public_html; index index.html index.php; ## Error log error_log /home/www-data/logs/nginx-errors.log; ## DocumentRoot setup location / { try_files $uri $uri/ @handler; expires 30d; } ## These locations would be hidden by .htaccess normally #location /app/ { deny all; } ## Disable .htaccess and other hidden files location /. { return 404; } ## Magento uses a common front handler location @handler { rewrite / /index.php; } ## Forward paths like /js/index.php/x.js to relevant handler location ~ .php/ { rewrite ^(.*.php)/ $1 last; } ## Execute PHP scripts location ~ \.php$ { try_files $uri =404; expires off; fastcgi_read_timeout 900; fastcgi_pass wwwdomaincom; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } ## GZip Compression gzip on; gzip_comp_level 8; gzip_min_length 1000; gzip_proxied any; gzip_types text/plain application/xml text/css text/js application/x-javascript; } /etc/php-fpm.d/www-data.conf my php-fpm pool config ## Nginx php-fpm Upstream upstream wwwdomaincom { server unix:/var/run/php-fcgi-www-data.sock; } ## Global Config client_max_body_size 10M; server_names_hash_bucket_size 64; ## Web Server Config server { ## Server Info listen 80; server_name domain.com *.domain.com; root /home/www-data/public_html; index index.html index.php; ## Error log error_log /home/www-data/logs/nginx-errors.log; ## DocumentRoot setup location / { try_files $uri $uri/ @handler; expires 30d; } ## These locations would be hidden by .htaccess normally #location /app/ { deny all; } ## Disable .htaccess and other hidden files location /. { return 404; } ## Magento uses a common front handler location @handler { rewrite / /index.php; } ## Forward paths like /js/index.php/x.js to relevant handler location ~ .php/ { rewrite ^(.*.php)/ $1 last; } ## Execute PHP scripts location ~ \.php$ { try_files $uri =404; expires off; fastcgi_read_timeout 900; fastcgi_pass wwwdomaincom; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } ## GZip Compression gzip on; gzip_comp_level 8; gzip_min_length 1000; gzip_proxied any; gzip_types text/plain application/xml text/css text/js application/x-javascript; } I've got a file in /home/www-data/public_html/index.php with the code <?php phpinfo(); ?> (file uploaded as user www-data).

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• Forward requests to IIS Application/Folder to Apache server on another port

  - by TheGwa

  I have found many questions and answers for ways of doing this using asapi filters or ARR and URL Rewrite, but none are clear and concise and I am sure many people have this issue. I am looking for a best practice step by step solution to the following scenario: I have a development server accessible externally via a specific port for testing. Eg. rnd.domain.com:8888. So there is one port in and out of this machine accessible to the world. On this server I have a number of Apache or other servers using specific ports such as 8080. IIS is bound to port 80 locally as well as 8888 to get external requests and works perfectly. I would like to use an application (folder) in IIS such as rnd.domain.com:8888/mapserver to map to the local apache server in both directions. The same solution must apply in production where the domain is mapped to port 80. eg. production.domain.com/mapserver maps to 8080 on production server

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• Apache mod_proxy to another server

  - by trobrock

  I am using the proxy_balancer in Apache2 to proxy requests to a Rails application to my rails server on the port the application is running on. This is how its set up... Rails Server Mongrel running on port 8000, when accessing the url directly to http://rails_server:8000 the site loads fine Apache Server Conf file for the site: <VirtualHost *:80> ServerAdmin webmaster@localhost ServerName myserver.com ServerAlias application.myserver.com <Proxy balancer://application_cluster> Allow from localhost BalancerMember http://ip.to.server:8000 retry=10 </Proxy> ProxyPass / balancer://application_cluster </VirtualHost> The problem I am having is going to http://rails_server:8000 works fine, but going to http://application.myserver.com Loads the right content, but is displaying all the HTML as text and not rendering it as html

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• I am trying to write an htaccess file performs authentication and redirects authenticated users to a

  - by racl101

  This is what I have so far but I can't get the RewriteCond and RewriteRule properly. RewriteEngine On RewriteCond %{LA-U:REMOTE_USER} (\d{3})$ RewriteRule !^%1 http://subdomain.mydomain.com/%1 [R,L]. AuthName "My Domain Protected Area" AuthType Basic AuthUserFile /path/to/my/.htpasswd Require valid-user This is what I mean the ReWriteCond and RewriteRule to say: "If the REMOTE_USER has a username ending in 3 digits then capture the three digits that match and for whatever url they are trying to access if it does not start with the 3 digits captured then redirect them to the sub directory with the name equal to those captured three digits." In other words, if a user named 'johnny202' is authenticated then if he's requesting any directory other than http://subdomain.mydomain.com/202/ then he should be redirected to http://subdomain.mydomain.com/202/ The only thing I can think of that is wrong is the first instance of '%1'.

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