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  • VMRC equivalent for Hyper-V?

    - by Ian Boyd
    VMRC was the client tool used to connect to virtual machines running on Virtual Server. Upgrading to Windows Server 2008 R2 with the Hyper-V role, i need a way for people to be able to use the virtual machines. Note: not all virtual machines will have network connectivity not all virtual machines will be running Windows some people needing to connect to a virtual machine will be running Windows XP Hyper-V manager, allowing management of the hyper-v server, is less desirable (since it allows management of the hyper-v server (and doesn't work on all operating systems)) What is the Windows Server 2008 R2 equivalent of VMRC; to "vnc" to a virtual server? Update: i think Tatas was suggesting Microsoft System Center Virtual Machine Manager Self-Service Portal 2.0 (?): Which requires SQL Server IIS Installing those would unfortunately violate our Windows Server 2008 R2 license. i might be looking at the wrong product link, since commenter said there is a version that doesn't require "System Center". Update 2: The Windows Server 2008 R2 running HyperV is being licensed with the understanding that it only be used to host HyperV. From the [Windows Server 2008 R2 Licensing FAQ][4]: Q. If I have one license for Windows Server 2008 R2 Standard and want to run it in a virtual operating system environment, can I continue running it in the physical operating system environment? A. Yes, with Windows Server 2008 R2 Standard, you may run one instance in the physical operating system environment and one instance in the virtual operating system environment; however, the instance running in the physical operating system environment may be used only to run hardware virtualization software, provide hardware virtualization services, or to run software to manage and service operating system environments on the licensed server. This is why i'm weary about installing IIS or SQL Server.

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  • SSL certificates work fine from command line but fails in script

    - by jrallison
    I'm trying to setup email notifications for my continuous integration server. I have a script which uses nail to send the email when the build works: #!/bin/bash echo "Build Worked!" | nail -A myisp -s 'Build Success' [email protected] When I run this from the command line with sh build-worked, it works and I receive the email. However, when I start the continuous integration server which executes the same script, I get the following error: nail: /opt/bitnami/common/lib/libssl.so.0.9.8: no version information available (required by nail) nail: /opt/bitnami/common/lib/libcrypto.so.0.9.8: no version information available (required by nail) Error with certificate at depth: 0 issuer = /C=ZA/ST=Western Cape/L=Cape Town/O=Thawte Consulting cc/OU=Certification Services Division/CN=Thawte Premium Server CA/[email protected] subject = /C=US/ST=California/L=Mountain View/O=Google Inc/CN=smtp.gmail.com err 20: unable to get local issuer certificate Continue (y/n)? could not initiate SSL/TLS connection: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed . . . message not sent. I must be messing some configuration, any ideas?

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  • How to generate customized sudoers files in puppet depending on the environment they're deployed to?

    - by gozu
    the sysadmins are present in the sudoers files of all environments, but other sudoers are not. Different environments all have slightly different sudoers. Most of the time, 90% of users are the same, and 10% vary so we cannot have only one sudoers file for everything. Right now, we are using puppet with 10 different files with names like sudoers.production1, sudoers.production2, sudoers.production3, sudoers.testing1, sudoers.staging1 and so forth. Puppet then picks the file to deploy based on the server's $domain (ex: dbserver.staging1.acme.com) or $hardwaremodel. It works fine but it's a nightmare to maintain so many files. I'd like to autogenerate sudoers files based on the server's domain and have only one big file with all the sudoers permissions for all users and all environments. Something that looks like: User_Alias ADMINS = abe, bob, carol, dave case $domain { "staging1.acme.com" { #add dev1,dev2,tester1,tester2 to sudoers file } "testing2.acme.com" { #add tester1, tester3, tester4 to sudoers file } What's the best way to go about this? Suggestions for alternatives are welcome. I'd appreciate any tips. Update 1: For security reasons, we'd rather not concatenate a bunch of files from a folder located on a puppet client in case someone puts a file in there (maliciously or not) and either breaks the combined file or inserts something in it. Most importantly, for usability, we'd like to keep the number of sudoers related files (fragment or complete) on puppet server to either 3 (prod/stage/test) or preferably 1 file. this file would (somehow) generate sudoers files on the puppet server and send one customized file to each puppet client. The purpose of this would be only searching for a username in a single file and removing it quicker than doing it on 11 files. When adding a user to a bunch of environments, it won't be as quick, but only one file would need to be opened and looked at, greatly reducing the chances of an omission. our Sudo version is 1.6.9p8 so we can't use /sudoers.d folder, only a sudoers file.

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  • Need troubleshooting advice for intermittent dns problems with requests on isp nameservers

    - by Mnebuerquo
    I've been having some intermittent dns problems with a web server, where certain isp's dns servers don't have my hostnames in cache and fail to look them up. At the same time, queries to opendns for those hostnames resolve correctly. It's intermittent, and it always works fine for me, so it's hard to identify the problem when someone reports connectivity problems to my site. My website is on a server running linux with Plesk. My dns records are configured with plesk (so my server is its own dns master). Domain name is registered with godaddy. I'm not real knowledgeable about dns, so I don't really know how to begin with troubleshooting. I've started learning to use dig, but while I can read the manpage to learn the syntax, I don't really know what questions to ask. Since the problem is intermittent I haven't been able to really catalog many symptoms. Symptoms I have observed: Certain people repeatedly reported intermittent problems connecting to my website. This was only from certain networks. (Ex: One guy could connect reliably from his office but not his home.) Sometimes I notice my browser taking a long time looking up the hostname for my site (Firefox shows a message in the status bar at the bottom). For me this is in the ten second range. ssh connections from anywhere to my server take a long time to connect but then seem to work fine once connected. So hopefully the folks on serverfault can point me to a good beginner tutorial for understanding dns, and suggest troubleshooting questions to ask next time one of my users reports connectivity problems.

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  • SSL certificates work fine from command line but fail in script

    - by jrallison
    I'm trying to setup email notifications for my continuous integration server. I have a script which uses nail to send the email when the build works: #!/bin/bash echo "Build Worked!" | nail -A myisp -s 'Build Success' [email protected] When I run this from the command line with sh build-worked, it works and I receive the email. However, when I start the continuous integration server which executes the same script, I get the following error: nail: /opt/bitnami/common/lib/libssl.so.0.9.8: no version information available (required by nail) nail: /opt/bitnami/common/lib/libcrypto.so.0.9.8: no version information available (required by nail) Error with certificate at depth: 0 issuer = /C=ZA/ST=Western Cape/L=Cape Town/O=Thawte Consulting cc/OU=Certification Services Division/CN=Thawte Premium Server CA/[email protected] subject = /C=US/ST=California/L=Mountain View/O=Google Inc/CN=smtp.gmail.com err 20: unable to get local issuer certificate Continue (y/n)? could not initiate SSL/TLS connection: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed . . . message not sent. I must be messing some configuration, any ideas?

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  • How to configure IIS for SVG and web testing with Visual Studio?

    - by macias
    Let's say I have a simple web page with svg image in it: <img src="foobar.svg" alt="not working" /> If I make this page as static html page and view it directly svg is displayed. If I type the address of this svg -- it is displayed. But when I make this as .aspx page and launch it dynamically from Visual Studio I get alt text. If I type the address of this svg (from localhost, not as a local file) -- browser tries to download it instead of displaying. I already defined mime type in IIS (for entire server -- "image/svg+xml") and restarted IIS. Same effect as before. Question: what should I do more? Update WireShark won't work (it is in documentation), I tried also RawCap, but it cannot trace my connection (odd), luckily Fiddler worked: From client: GET http://127.0.0.1:1731/svg/document_edit.svg HTTP/1.1 Host: 127.0.0.1:1731 User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:10.0.1) Gecko/20100101 Firefox/10.0.1 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip, deflate Connection: keep-alive Answer from server: HTTP/1.1 200 OK Server: ASP.NET Development Server/10.0.0.0 Date: Thu, 16 Feb 2012 11:14:38 GMT X-AspNet-Version: 4.0.30319 Cache-Control: private Content-Type: application/octet-stream Content-Length: 87924 Connection: Close <?xml version="1.0" encoding="UTF-8" standalone="no"?> <!-- Created with Inkscape (http://www.inkscape.org/) --> <svg xmlns: *** FIDDLER: RawDisplay truncated at 128 characters. Right-click to disable truncation. *** For the record, here is useful Q&A for Fiddler: http://stackoverflow.com/questions/826134/how-to-display-localhost-traffic-in-fiddler-while-debugging-an-asp-net-applicati

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  • How to make Virtualbox, OpenVPN, and Win2008 Web R2 like one another?

    - by Aquitaine
    Back with web developer guy wearing net admin hat. Hopefully this is an easy one. We have two servers on a public network at a hosted facility. Server A is our public-facing web server and server B is our database server. Both are running Windows 2008 Server R2 Web Edition. We want Server B isolated from everything except Server A, such that anyone who has to connect to server B goes through the VPN on Server A. It's not perfect since we have no access to do this on the router side, but it's what we've got. We've set up VirtualBox and OpenVPN Access Server on Server A. It has one network interface set to 'NAT' mode, such that OpenVPN gets its IP at 10.0.2.x, and to connect to the OpenVPN interface, I go to the local IP for the Virtualbox network adapter, 192.168.56.x, which works as I configured the appropriate ports using VBoxManage. My question is, do I need to be using Bridged Networking and give the VPN server its own IP, or is there some way to tell the server (either Windows or the Virtualbox OpenVPN) that 'any public connection on the real external IP on port X should be directed to this internal LAN address of 192.168.1.x on port Y'? OpenVPN itself doesn't seem to be aware of the server's real external IP unless we put it in Bridged networking mode; is that necessary or advisable? We're without RRAS since this is Web edition, but I feel like what we're going for is pretty simple. Thanks! Aq

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  • Puppet : How to override / redefine outside child class (usecase and example detailled)

    - by alex8657
    The use case i try to illustrate is when to declare some item (eq mysqld service) with a default configuration that could be included on every node (class stripdown in the example, for basenode), and still be able to override this same item in some specific class (eg mysql::server), to be included by specific nodes (eg myserver.local) I illustrated this use case with the example below, where i want to disable mysql service on all nodes, but activate it on a specific node. But of course, Puppet parsing fails because the Service[mysql] is included twice. And of course, class mysql::server bears no relation to be a child of class stripdown Is there a way to override the Service["mysql"], or mark it as the main one, or whatever ? I was thinking about the virtual items and the realize function, but it only permits apply an item multiple times, not to redefine or override. # In stripdown.pp : class stripdown { service {"mysql": enable => "false", ensure => "stopped" } } # In mysql.pp : class mysql::server { service { mysqld: enable => true, ensure => running, hasrestart => true, hasstatus => true, path => "/etc/init.d/mysql", require => Package["mysql-server"], } } # Then nodes in nodes.pp : node basenode { include stripdown } node myserver.local inherits basenode { include mysql::server` # BOOM, fails here because of Service["mysql"] redefinition }

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  • Strange RDP / Remote Desktop problem

    - by John Landheer
    I'll try to be as specific as I can be: Server is running SBS 2008 R2 (with all updates) Server is connected to the internet Server has 2 NIC's, one is disabled Server is running RDP Service (accessible directly from the internet, I know, not as secure as it should be) Computers A and B are on the same local net. Computers A and B are both Windows 7. Users X and Y are both admins on the server Computer A can connect as user X to the server with mstsc Computer A can connect as user Y to the server with mstsc Computer B can connect as user X to the server with mstsc Computer B CANNOT connect as user Y to the server with mstsc! Error that username/password is incorrect. The last point is the problem, I get an authentication error. This used to work flawlessly for the last year. The server and desktops have been rebooted. EDIT: I tried: prefixing domain to the username prefixing the server computer name to the username change the password copy/paste the password from notepad to make sure it was correct I find it very strange.... EDIT: The computers are not on the same subnet as the server. The server is at my hosting provider. All computers as all users can reach the web app that is running on the server.

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  • pdns-recursor allocates resources to non-existing queries

    - by azzid
    I've got a lab-server running pdns-recursor. I set it up to experiment with rate limiting, so it has been resolving requests openly from the whole internet for weeks. My idea was that sooner or later it would get abused, giving me a real user case to experiment with. To keep track of the usage I set up nagios to monitor the number of concurrent-queries to the server. Today I got notice from nagios that my specified limit had been reached. I logged in to start trimming away the malicious questions I was expecting, however, when I started looking at it I couldn't see the expected traffic. What I found is that even though I have over 20 concurrent-queries registered by the server I see no requests in the logs. The following command describes the situation well: $ sudo rec_control get concurrent-queries; sudo rec_control top-remotes 22 Over last 0 queries: How can there be 22 concurrent-queries when the server has 0 queries registered? EDIT: Figured it out! To get top-remotes working I needed to set ################################# # remotes-ringbuffer-entries maximum number of packets to store statistics for # remotes-ringbuffer-entries=100000 It defaults to 0 storing no information to base top-remotes statistics on.

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  • Make nginx config like apache2 virtualhosts

    - by user2104070
    I have web server with apache2 with many subdomains on it like, domain.com, abc.domain.com, def.domain.com etc. etc. Now I got a new nginx server and want to set it up like apache2, so to test I created configs (2 files in /etc/nginx/sites-available/ and link to them from sites-enabled/) as shown, domain.config: server { listen 80 default_server; listen [::]:80 default_server ipv6only=on; root /srv/www/; index index.html index.htm; # Make site accessible from http://localhost/ server_name domain.com; location / { # First attempt to serve request as file, then # as directory, then fall back to displaying a 404. try_files $uri $uri/ =404; } } abc-domain config: server { listen 80; listen [::]:80; root /srv/www/tmp1/; index index.html index.htm; # Make site accessible from http://localhost/ server_name abc.domain.com; location / { # First attempt to serve request as file, then # as directory, then fall back to displaying a 404. try_files $uri $uri/ =404; } } but when I access with domain.com I am getting index.html from /var/www/tmp1 only. Is there something I'm doing wrong in the nginx config?

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  • Make Python Socket Server More Efficient

    - by BenMills
    I have very little experience working with sockets and multithreaded programming so to learn more I decided to see if I could hack together a little python socket server to power a chat room. I ended up getting it working pretty well but then I noticed my server's CPU usage spiked up over 100% when I had it running in the background. Here is my code in full: http://gist.github.com/332132 I know this is a pretty open ended question so besides just helping with my code are there any good articles I could read that could help me learn more about this? My full code: import select import socket import sys import threading from daemon import Daemon class Server: def __init__(self): self.host = '' self.port = 9998 self.backlog = 5 self.size = 1024 self.server = None self.threads = [] self.send_count = 0 def open_socket(self): try: self.server = socket.socket(socket.AF_INET6, socket.SOCK_STREAM) self.server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) self.server.bind((self.host,self.port)) self.server.listen(5) print "Server Started..." except socket.error, (value,message): if self.server: self.server.close() print "Could not open socket: " + message sys.exit(1) def remove_thread(self, t): t.join() def send_to_children(self, msg): self.send_count = 0 for t in self.threads: t.send_msg(msg) print 'Sent to '+str(self.send_count)+" of "+str(len(self.threads)) def run(self): self.open_socket() input = [self.server,sys.stdin] running = 1 while running: inputready,outputready,exceptready = select.select(input,[],[]) for s in inputready: if s == self.server: # handle the server socket c = Client(self.server.accept(), self) c.start() self.threads.append(c) print "Num of clients: "+str(len(self.threads)) self.server.close() for c in self.threads: c.join() class Client(threading.Thread): def __init__(self,(client,address), server): threading.Thread.__init__(self) self.client = client self.address = address self.size = 1024 self.server = server self.running = True def send_msg(self, msg): if self.running: self.client.send(msg) self.server.send_count += 1 def run(self): while self.running: data = self.client.recv(self.size) if data: print data self.server.send_to_children(data) else: self.running = False self.server.threads.remove(self) self.client.close() """ Run Server """ class DaemonServer(Daemon): def run(self): s = Server() s.run() if __name__ == "__main__": d = DaemonServer('/var/servers/fserver.pid') if len(sys.argv) == 2: if 'start' == sys.argv[1]: d.start() elif 'stop' == sys.argv[1]: d.stop() elif 'restart' == sys.argv[1]: d.restart() else: print "Unknown command" sys.exit(2) sys.exit(0) else: print "usage: %s start|stop|restart" % sys.argv[0] sys.exit(2)

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  • Script Task/Component and Template Information

    The Script Task and Script component are often used by people developing SSIS packages because they are easy to use and now because SSIS could be perceived to be more developer friendly they are very powerful. That being said we should no be using them everywhere.  There are generally Tasks/Components already provided that will do the job it may be that we have to rethink the way we want to draw our package. I had cause last week to break out the script component in SQL Server 2008 SP1 and found that it was broken.  I don’t know when it broke as I do not use them all that often.  My error was as below.     Something must have overwritten this template information.  I looked in Event Viewer and tried the things it suggested but the templates still did not work.  Here is how I got them eventually to work for me (Your Mileage may vary) Open up a Command Prompt window using an administrator level account and “as an administrator” vsta.exe /hostid SSIS_ScriptTask /setup vsta.exe /hostid SSIS_ScriptComponent /setup   This worked for me.  Hope it helps.

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  • Websockets through Stunnel is giving random bytes.

    - by user16682
    I have several servers set up for a web application that I am developing. One is a load balancing server, and I'm running a php WebSockets server on this balancer. The website that I am developing on uses ssl, so I have my WebSockets running through a wss uri connecting directly to the balancer, where I have set up stunnel4 to decrypt all traffic at a certain port and re-rout it to my php WebSockets server. This works fine when it comes down to connecting to my server. That's not the problem. The problem occurs when I try to send data to the server. Occasionally when I try this, stunnel does not appear to be decrypting the data properly. I get garbage characters in my termanal running the server: what appear to be completely random bytes. This can sometimes go on for several consecutive messages that I send before abruptly working again. It is very erratic and unpredictable. Sometimes I refresh the page, and all the messages work perfectly. Sometimes the WebSocket connects and I have to wait 5-10 seconds before any messages I send are interpreted properly by the server. Other times I can't send any messages at all, because they all end up as garbage. I believe this is a stunnel problem, but I am not certain. Does anybody have any experience with this? I would like a more predictable server if I can get it. Some more information: This occurs extensively in Chrome, not quite as much in FireFox, and never in Safari. The php server I am using is phpws http://code.google.com/p/phpws/ -- On the WebSocket connection, this server would sometimes detect that the header was only 1 byte in size, the first byte of the WebSockets header. I had to modify the server to flush the buffer ever time this occurred so that it would reliably connect.

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  • Script Task/Component and Template Information

    The Script Task and Script component are often used by people developing SSIS packages because they are easy to use and now because SSIS could be perceived to be more developer friendly they are very powerful. That being said we should no be using them everywhere.  There are generally Tasks/Components already provided that will do the job it may be that we have to rethink the way we want to draw our package. I had cause last week to break out the script component in SQL Server 2008 SP1 and found that it was broken.  I don’t know when it broke as I do not use them all that often.  My error was as below.     Something must have overwritten this template information.  I looked in Event Viewer and tried the things it suggested but the templates still did not work.  Here is how I got them eventually to work for me (Your Mileage may vary) Open up a Command Prompt window using an administrator level account and “as an administrator” vsta.exe /hostid SSIS_ScriptTask /setup vsta.exe /hostid SSIS_ScriptComponent /setup   This worked for me.  Hope it helps.

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  • How to solve: "Connect to host some_hostname port 22: Connection timed out"

    - by Aufwind
    I have two Ubuntu machines. Both have openssh-client and openssh-server installed on them. ssh-ing from machine G (fresh Ubuntu 11.10 installation) to machine K works great. But ssh-ing from machine K to machine G results always in the Error: Connect to host some_hostname port 22: Connection timed out I went through the troubleshooting section of help.ubuntu.com and I got the following results: ps -A | grep sshd # results in 848 ? 00:00:00 sshd - sudo ss -lnp | grep sshd # results in 0 128 :::22 :::* users:(("sshd",848,4)) 0 128 *:22 *:* users:(("sshd",848,3)) - ssh -v localhost # works! - sudo ufw status verbose # yields: "Status: inactive" I haven't change anything in the config file. What can I do to locate the Problem and solve it? Glad about every hint! Edit: ping was succesful in both directions! I did a telnet <machineK> 22 from machin G which resulted in Trying and then in telnet: Unable to connect to remote host: Connection timed out. But telnet the other way around worked just fine! Edit 2: ssh start/running, process 966 # yields: ssh start/running, process 966 /etc/hostname # contains my hostname, let's call it blubb /etc/hosts # contains the following 127.0.0.1 localhost # 127.0.1.1 blubb 129.26.68.74 blubb # I added this! - sudo service ufw status # yields: ufw start/running I installed Gufw and set it to ON. Then I selected from Incoming the option ALLOW. Then I sshed to another machine from where I sshed back to my machine. Still the same error as above: connect to host blubb port 22: Connection timed out Any more hints, what I can check?

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  • Deploying my first website!

    - by test
    I have built a data driven website - an asp.net website, using the entity framework. In my solution I have 4 projects - the web application PresentationLayer, and 3 class libraries - Data Layer, Business and Common Layer. In one of these libraries, Common Layer I have my Model (MyModel.edmx). I have always tested my application on Cassini - Asp.Net Development Server. I have never touched IIS in my life. I bought a domain and hosting on go daddy. My logic tells me to grab my four folders (1 for each layer) and simply move them to the root folder. But I know I'm wrong since then the home page would be mywebsite.org/presentationlayer/default.aspx and second of all I start getting a bunch of errors where files do not load or they are not found. I also know that I need to manage the web.config but I don't have any experience where to start. I'm not sure if this is a problem but I also have a web service included in my presentation layer.

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  • Varnish configuration to only cache for non-logged in users

    - by davidsmalley
    I have a Ruby on Rails application fronted by varnish+nginx. As most of the sites content is static unless you are a logged in user, I want to cache the site heavily with varnish when a user is logged out but only to cache static assets when they are logged in. When a user is logged in they will have the cookie 'user_credentials' present in their Cookie: header, in addition I need to skip caching on /login and /sessions in order that a user can get their 'user_credentials' cookie in the first place. Rails by default does not set a cache friendly Cache-control header, but my application sets a "public,s-max-age=60" header when a user is not logged in. Nginx is set to return 'far future' expires headers for all static assets. The configuration I have at the moment is totally bypassing the cache for everything when logged in, including static assets — and is returning cache MISS for everything when logged out. I've spent hours going around in circles and here is my current default.vcl director rails_director round-robin { { .backend = { .host = "xxx.xxx.xxx.xxx"; .port = "http"; .probe = { .url = "/lbcheck/lbuptest"; .timeout = 0.3 s; .window = 8; .threshold = 3; } } } } sub vcl_recv { if (req.url ~ "^/login") { pipe; } if (req.url ~ "^/sessions") { pipe; } # The regex used here matches the standard rails cache buster urls # e.g. /images/an-image.png?1234567 if (req.url ~ "\.(css|js|jpg|jpeg|gif|ico|png)\??\d*$") { unset req.http.cookie; lookup; } else { if (req.http.cookie ~ "user_credentials") { pipe; } } # Only cache GET and HEAD requests if (req.request != "GET" && req.request != "HEAD") { pipe; } } sub vcl_fetch { if (req.url ~ "^/login") { pass; } if (req.url ~ "^/sessions") { pass; } if (req.http.cookie ~ "user_credentials") { pass; } else { unset req.http.Set-Cookie; } # cache CSS and JS files if (req.url ~ "\.(css|js|jpg|jpeg|gif|ico|png)\??\d*$") { unset req.http.Set-Cookie; } if (obj.status >=400 && obj.status <500) { error 404 "File not found"; } if (obj.status >=500 && obj.status <600) { error 503 "File is Temporarily Unavailable"; } } sub vcl_deliver { if (obj.hits > 0) { set resp.http.X-Cache = "HIT"; } else { set resp.http.X-Cache = "MISS"; } }

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  • getting Internet connection sharing working in a slightly more complicated configuration

    - by tirichitirca t
    I have the following configuration: Computer A - Mac OSX 10.8.4, wireless & wired adapters Computer B - Windows 7 (64 bit), wireless & wired adapters, has internet connection via the wired adapter (ethernet) d-link wired/wireless router. Problem to solve: Connect from computer A to the internet through the wired connection of computer B. I tried the following: I set up a local network between A and B using the d-link router. The configuration is this: D-link router - 192.168.0.1 A - wired connection to the d-link router, static 192.168.0.101 (I could have used the wireless but I preferred the wired connection) B - wireless connection to the d-link router DHCP 192.168.0.102 (but I made sure it always gets the same address) B - wired connection to the internet using some address that begins with 10.x.y.z. In this configuration A can see B. I enabled ICS on the wired adapter of B. I set up the Gateway of A to point to B and DNS servers to point to the DNS servers specified for the 10.x.y.z address. It doesn't work, A goes only as far as B. It can ping the 10.x.y.z address of B though. I then found this article: http://terrybritton.com/windows-internet-connection-sharing-ics-not-working-with-linux-bridging-is-the-solution-916/. Terry is suggesting that a bridge should be defined on B between the two connections. I tried that but basically computer B is screwed as soon as I create the bridge. It can't connect to the internet anymore. It is as if the network bridge seems to think the traffic to the internet should go from the wired connection to the wireless and not the other way around. The other thing that puzzles me is the router itself. In general the router needs an internet address. In a normal configuration it is the router that gets the ip address and the internet traffic goes through the router. In my case I am not interested in that. So, any suggestions to get this working? I wouldn't shy away from using a commercial software but I would think windows 7 should allow me to do it. Thanks

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  • Second network card configuration not working.

    - by Sebas
    I have 4 servers running Centos 5. All of them have two ethernet network cards. I have configured 192.168.1.x IP addresses on their eth0 card. They are all connected to the same switch using their eth0 card and they are all working. I have configured 10.72.11.x IP addresses on their eth1 card.They are all connected to the same switch - a different one from the switch used with eth0 card - using their eth1 card and they are NOT all working. Their configuration files is like: DEVICE=eth1 BOOTPROTO=static IPADDR=10.72.11.236 BROADCAST=10.72.11.191 NETMASK=255.255.255.192 NETWORK=10.72.11.128 HWADDR=84:2B:2B:55:4B:98 IPV6INIT=yes IPV6_AUTOCONF=yes ONBOOT=yes The interfase is starting and configured as I need. [root@sql1 network-scripts]# ifconfig eth0 Link encap:Ethernet HWaddr 84:2B:2B:55:4B:97 inet addr:192.168.1.105 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::862b:2bff:fe55:4b97/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:2981 errors:0 dropped:0 overruns:0 frame:0 TX packets:319 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:386809 (377.7 KiB) TX bytes:66134 (64.5 KiB) Interrupt:36 Memory:da000000-da012800 eth1 Link encap:Ethernet HWaddr 84:2B:2B:55:4B:98 inet addr:10.72.11.236 Bcast:10.72.11.191 Mask:255.255.255.192 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:48 Memory:dc000000-dc012800 I also added a route-eth1 file that looks like: 10.0.0.0/8 via 10.72.11.254 Routing looks fine to me: [root@sql1 network-scripts]# netstat -rn Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 10.72.11.192 0.0.0.0 255.255.255.192 U 0 0 0 eth1 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1 10.0.0.0 10.72.11.254 255.0.0.0 UG 0 0 0 eth1 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 But I cannot ping one server from the other. [root@sql1 network-scripts]# ping 10.72.11.235 PING 10.72.11.235 (10.72.11.235) 56(84) bytes of data. From 10.72.11.236 icmp_seq=1 Destination Host Unreachable From 10.72.11.236 icmp_seq=2 Destination Host Unreachable From 10.72.11.236 icmp_seq=3 Destination Host Unreachable From 10.72.11.236 icmp_seq=4 Destination Host Unreachable From 10.72.11.236 icmp_seq=5 Destination Host Unreachable From 10.72.11.236 icmp_seq=6 Destination Host Unreachable ^C --- 10.72.11.235 ping statistics --- 7 packets transmitted, 0 received, +6 errors, 100% packet loss, time 6033ms , pipe 3 What am I doing wrong?

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  • Openfire: Closing session due to incorrect hostname

    - by cvista
    I have a fresh install on a windows sevrer 2008 box. I can connect adium to the server from a remote machine and from the admin console/sessions I can see my session. My friend can aslo connect and I can see his session. I can send an admin message out and both of us can see it in the adium clients. We can't see each other though. I also get these logs in the warn window in the log viewer: Closing session due to incorrect hostname in stream header. Host: prjatk.com. Connection: org.jivesoftware.openfire.net.SocketConnection@1b1fd9c socket: Socket[addr=/109.109.248.82,port=56258,localport=5269] session: null prjatk.com is the server - however in the server settings on the admin screen I see the computer name as the hostname - is that the issue? If so how can I change that?

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  • How to install nginx and install the configuration files too

    - by Burning the Codeigniter
    I've just completely uninstalled nginx 1.0.6 from my server (Ubuntu 11.04) using apt-get remove nginx rm -rf /etc/nginx/ rm -rf /usr/sbin/nginx rm /usr/share/man/man1/nginx.1.gz apt-get remove nginx* Now I want to install it again, however when starting nginx, I get errors such as: Restarting nginx: nginx: [emerg] open() "/etc/nginx/nginx.conf" failed (2: No such file or directory) Then I placed my own conf file, then I get a new error: Restarting nginx: nginx: [emerg] open() "/etc/nginx/mime.types" failed (2: No such file or directory) in /etc/nginx/nginx.conf:12 Now it seems that apt-get install nginx doesn't install it completely, I cleared the apt-get cache, doesn't seem to help. How can I get a full installation of nginx using apt-get?

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  • Challenges in multi-player Android Game Server with RESTful Nature

    - by Kush
    I'm working on an Android Game based on Contract Bridge, as a part of my college Summer Internship project. The game will be multi-player such that 4 Android devices can play it, so there's no BOT or CPU player to be developed. At the time of getting project, I realized that most of the students had already worked on the project but none of their works is reusable now (for variety of reasons like, undocumented code and design architecture, different platform implementation). I have experience working on several open source projects and hence I emphasis to work out on this project such that components I make become reusable as much as possible. Now, as the game is multi-player and entire game progress will be handled on server, I'm currently working on Server's design, since I wanted to make game server reusable such that any client platform can use it, I was previously confused in selecting Socket or REST for Game Server's design, but later finalized to work on REST APIs for the server. Now, since I have to keep all players in-sync while they make movements in game, on server I've planned to use Database which will keep all players' progress, specific for each table (in Bridge, 4 players play on single table, and server will handle many such game tables). I don't know if its an appropriate decision to use database as shared medium to track progress of each game table (let me know if there's an appropriate or better option). Obviously, when game is completed for the table, data for that table on server's database is discarded. Now the problem is that, access to REST service is an HTTP call, so as long as client doesn't make any request, server will remain idle, and consider a situation where A player has played a card on his device and the device requests to apply this change on the server. Now, I need to let rest of the three devices know that the player has played a card, and also update view on their device. AFAIK, REST cannot provide a sort-of Push-notification system, since the connection to the server is not persistent. One solution that I thought was to make each device constantly poll the server for any change (like every 56 ms) and when changes are found, reflect it on the device. But I feel this is not an elegant way, as every HTTP request is expensive. (and I choose REST to make game play experience robust since, a mobile device tends to get disconnected from Internet, and if there's Socket-like persistent connection then entire game progress is subject to lost. Also, portability on client-end is important) Also, imagining a situation where 10 game tables are in progress and 40 players are playing, a server must be capable to handle flooded HTTP requests from all the devices which make it every 56 ms. So I wonder if the situation is assumed as DoS attack. So, explaining the situation, am I going on the right track for the server design? I wanted to be sure before I proceed much further with the code.

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  • The big dude : server cost € , and the what 'i must look for' question .

    - by Angelus
    Hi again and sorry for the bad title . This time I'm thinking in a big project , and I have a big hole of acknowledge about servers and cost of them (economic cost). The big project consist in a new table game for playing online with bets. Think in it like a poker server that must have a good response to thousands of people at the same time. Then i have the big question , what type of server must i look for? , what features must i see in them? . ¿Must I think in cloud computing? thank you in advance.

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  • Does Ubuntu 11.10 include MySQL 5.5?

    - by Jiho Kang
    I was told that Ubuntu 11.10 comes with MySQL 5.5 but it doesn't show up in the cache search. Did it not make it in to the latest release? root@ubuntu:/etc# cat lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=11.10 DISTRIB_CODENAME=oneiric DISTRIB_DESCRIPTION="Ubuntu 11.10" root@ubuntu:/etc# apt-cache search mysql-server mysql-server - MySQL database server (metapackage depending on the latest version) mysql-server-5.1 - MySQL database server binaries and system database setup mysql-server-core-5.1 - MySQL database server binaries auth2db - Powerful and eye-candy IDS logger, log viewer and alert generator cacti - Frontend to rrdtool for monitoring systems and services mysql-cluster-server - MySQL database server (metapackage depending on the latest version) mysql-cluster-server-5.1 - MySQL database server binaries torrentflux - web based, feature-rich BitTorrent download manager

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