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• JavaScript is not pointing correctly on IIS7 running behind Apache mod_proxy

  - by sohum

  So here's my setup. I've got a DynDNS account since I have a dynamic IP. I have Apache listening on port 80 and IIS7 on port 8080. I don't want users to have to enter in mydyndns.dyndns.com:8080 to get to IIS7, so I've added the following code to my Apache httpd.conf file to enable a proxy/reverse proxy: <VirtualHost *:80> ProxyPass / http://localhost:8080/myASPSite/ ProxyPassReverse / http://localhost:8080/myASPSite/ ServerName myaspsite.mydomain.com </VirtualHost> I've got a CNAME record set up on my DNS so that myaspsite.mydomain.com redirects to mydyndns.dyndns.com. When I type in myaspsite.mydomain.com into my browser, everything works beautifully... mostly. IIS7 serves up the ASPX pages and visitors to the site don't know any better. A problem arises, however, when I add Ajax Control Toolkit controls into my ASPX website, because these generate JavaScript and apparently mod_proxy_html isn't geared to handle the JS URIs properly. Sure enough, when I open up the source of my ASPX page, it has script elements as follows: <script src="/myASPSite/WebResource.axd?xyz" type="text/javascript"></script> <script src="/myASPSite/ScriptResource.axd?xyz" type="text/javascript"></script> Sure enough, these scripts are attempting to be resolved at http://myaspsite.mydomain.com/myASPSite/WebResource..., which through the proxy translates to localhost:8080/myASPSite/myASPSite/.... How can I solve this problem. The couple of websites I found suggested turning on ProxyHTMLExtended but when I tried doing that, the server did not start. I'm guessing I didn't know how to do it properly. Anyone has a handy couple of config lines that I can add to my Apache conf file to get this working as I need? I'm using Apache 2.2.11. Thanks!

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• Registering publicly Mail server and Web server in a free dns server

  - by Bruno Vieira

  I'm trying to host the e-mails and the site of our company into our private server. I've already followed the Gentoo Virtual Mailhosting System with Postfix Guide and my mail server is working (actually it sends mails for the local users and for external users it goes to spam) and know how to set an Apache 2 server. What I don't know (and I mean really don't) is how to make them public. I did some research and found that I should ask my ISP to change the reverse DNS to my company domain in order to prevent my mails to be marked as spam, they are doing. I already know I have to configure a DNS Server, it seems like my register provider already has one but I don't know how I can configure CNET, A, MX, TXT and all those tags (Is it tags the name?) and If I must do some other configuration on my server. My Server: Linux mail 3.2.21-gentoo #1 SMP My /etc/hosts: 127.0.0.1 mail.example.com.br example example.com.br ::1 mail.example.com.br mail example.com.br My /etc/conf.d/hostname: hostname ="mail" What am I missing? If there's a guide about how to configure I would really be grate. Thanks in advance for the help. Cheers

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• ssh connection slow when using @hostname.com but now when using @ipaddress

  - by Alex Recarey

  When connecting to a Debian server using ssh, if I use [email protected] (the IP address of hte server) the connection is instant. If however I use [email protected] (a DNS redirected to the IP address of the server) the ssh connection hangs for a 20 seconds before connecting successfully. The ssh logs show the following: [alex@alex home]$ ssh -v -v [email protected] OpenSSH_5.5p1, OpenSSL 1.0.0c-fips 2 Dec 2010 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 and here it hangs during 20 seconds before continuing. I think it might have something to do with reverse DNS or similar (the server does not really "know" it's name is hostname.com, it just has that DNS rediriected to its IP address). I have added the following options to /etc/ssh/sshd_config: UseDNS no GSSAPIAuthentication no to no effect. The server's DNS records in /etc/resolv.conf are configured correctly: ping hostname.com PING sub.domain.com (X.X.X.X) 56(84) bytes of data. 64 bytes from replicant (X.X.X.X): icmp_seq=1 ttl=64 time=0.029 ms 64 bytes from replicant (X.X.X.X): icmp_seq=2 ttl=64 time=0.050 ms?s Thanks for the help. Solution: It seems the DSL router my ISP saddled me with was causing the trouble. Changing my DNS server from 192.168.1.1 (router's IP) to google's (8.8.8.8, always good to know when you are in a hurry) instantly solved the connection delay problem. I am guessing that the 50€ router provided does not cache DNS entries, although I don't understand why pinging the DNS address had no delay, and 20 seconds is too long of a wait, even for uncached DNS. Tnanks again for the help!

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• Windows Server 2008 R2 DNS - One IP, multiple servers

  - by Blu Dragon

  I need opinions and examples on how to best to accomplish the setup I am looking for. I have a public-facing AD domain server with one public IP address. I have setup an external zone for example.com and I successfully have my own name servers pointing to it at ns0.example.com and ns1.example.com. I also have an internal zone for my private network at home.example.com. I am behind a router with the domain server in the DMZ. I want dev.example.com to be accessible from the outside world over https and to point to internal IP address 192.168.1.78. Likewise, I want www.example.com to be accessible from the outside world and point to internal IP address 192.168.1.79. Both dev and www servers are CentOS 5.6 VMs running inside of Hyper-V on the domain server (bad idea I know but I am limited on hardware atm). What is best way to achieve this? From what I have read and researched on Google, I may need to setup a reverse proxy but I am not sure how well that will work with SSL.

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• Apache Proxy Pass and Web Sockets

  - by James

  I'm using Apache with the mod_proxy module to reverse proxy my Node.js application through to port 80, so that we can access it as an internal application. I have a file in sites-enabled which contains this: VirtualHost *:80> DocumentRoot /var/www/internal/ ServerName internal ServerAlias internal <Directory /var/www/internal/public/> Options All AllowOverride All Order allow,deny Allow from all </Directory> ProxyRequests off <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPass / http://localhost:8080/ retry=0 ProxyPassReverse / http://localhost:8080/ ProxyPreserveHost on ProxyTimeout 1200 LogLevel debug AllowEncodedSlashes on </VirtualHost> As I said, our application is written in Node.js and we're using socket.io to make use of web-sockets, as our application also contains realtime elements to it. The problem is, mod_proxy doesn't seem to handle web sockets and we get errors when trying to use them: WebSocket connection to 'ws://bloot/socket.io/1/websocket/nHtTh6ZwQjSXlmI7UMua' failed: Unexpected response code: 502 How can we fix this issue and keep sockets working, as the only way we can get it working currently is to access the site via ip:port which we don't want to do. Also, as a side question, how can I get ErrorDocument to work properly? Our error files are stored in /var/www/internal/public/error/ but they seem to get put through the proxy too?

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• Ubuntu 10.04 server delay responding to AJAX requests

  - by DanielAttard

  I manage a Ubuntu 10.04 server with a couple of domains hosted on it. As I continue to learn more about all these wonderful new (for me), one issue that I have begun to notice is the delay it sometimes takes for the server to respond to certain requests. As an example, when I view the timeline of events using firebug I can see that most of the time when I make a POST, the server responds in under 100ms. Sometimes, however, there is a substantial delay before the RESPONSE from the server. I can't seem to tell when the delay will happen and when it won't, however, when it happens the delay is always for about 4.5 seconds. The delay seems to happen about 30-40% of the time. Here is the section of apache2.conf dealing with logs: # # The following directives define some format nicknames for use with # a CustomLog directive (see below). # If you are behind a reverse proxy, you might want to change %h into %{X-Forwarded-For}i # LogFormat "%v:%p %h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" vhost_combined LogFormat "%h %l %u %t \"%r\" %>s %O \"%{Referer}i\" \"%{User-Agent}i\"" combined LogFormat "%h %l %u %t \"%r\" %>s %O" common LogFormat "%{Referer}i -> %U" referer LogFormat "%{User-agent}i" agent I have no idea where to look to try and debug this problem or investigate further. Any suggestions?

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• vmware vcenter 5.1 installation with FQDN error

  - by CSG

  I'm trying to install vCenter 5.1 on a windows 2012 dedicated (with SQL express standalone) During the installation of the Single Sign On module i've a warning "the fully qualified domain name cannot be resolved with nslookup. if you continue the installation some features might not work correctly. for detailed requiments see the installation and setup guide" The only indication that i've found are about the reverse zone dns resolution.. and this works! i've verified that the dns works properly with nslookup C:\Users\admin>nslookup srv6.mydomain.local Server: srv2.mydomain.local Address: 172.25.4.22 Nome: srv6.mydomain.local Address: 172.25.1.26 C:\Users\admin>nslookup 172.25.1.26 Server: srv2.mydomain.local Address: 172.25.4.22 Nome: srv6.mydomain.local Address: 172.25.1.26 (all ip are right: I've the vCenter=srv6 and DC+DNS=srv2 on different vlan) i've tryed to force the resolution of the ip changing the [..]\drivers\etc\hosts file i've disabled the IPv6 support i've used all combination with domain prefixes (explicit, by dhcp, undefined..) i've disabled all antivirus/firewall (kaspersky end point 10) is this a bug of vcenter 5.1.0-1065152 ? have you got any suggestions for me?

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• Kerberos & localhost

  - by Alex Leach

  I've got a Kerberos v5 server set up on a Linux machine, and it's working very well when connecting to other hosts (using samba, ldap or ssh), for which there are principals in my kerberos database. Can I use kerberos to authenticate against localhost though? And if I can, are there reasons why I shouldn't? I haven't made a kerberos principal for localhost. I don't think I should; instead I think the principal should resolve to the machine's full hostname. Is that possible? I'd ideally like a way to configure this on just one server (whether kerberos, DNS, or ssh), but if each machine needs some custom configuration, that'd work too. e.g $ ssh -v localhost ... debug1: Unspecified GSS failure. Minor code may provide more information Server host/[email protected] not found in Kerberos database ... EDIT: So I had a bad /etc/hosts file. If I remember correctly, the original version I got with Ubuntu had two 127.0. IP addresses, something like:- 127.0.0.1 localhost 127.0.*1*.1 hostname For no good reason, I'd changed mine a long time ago to: 127.0.0.1 localhost 127.0.*0*.1 hostname.example.com hostname This seemed to work fine with everything until I tried out ssh with kerberos (a recent endeavour). Somehow this configuration led to sshd resolving the machine's kerberos principal to "host/localhost@\n", which I suppose makes sense if it uses /etc/hosts for forward and reverse dns lookups in preference to external dns. So I commented out the latter line, and sshd magically started authenticating with gssapi-with-mic. Awesome. (Then I investigated localhost and asked the question)

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• Streaming to PS3 with NAS and built-in dlna server?

  - by philt

  With consumer-grade hardware, is it possible to successfully stream 1080p mp4 videos to a PS3? I have a linksys router that can only do 10/100. The PS3 is wired to it with cat5e cable, and the PS3 itself supports gigabit ethernet. I would upgrade the router and get one that supports gigabit ethernet if it could handle streaming like this. It currently does work with minor jerkiness streaming from my mac to the PS3, but fast-forward/reverse and "goto" (equivalent of scene selection) take forever and/or fail completely. And streaming from my mac of course requires the mac to be on at all times. When I put the movies on an external USB drive and connect to the PS3 directly, it performs flawlessly. Fast forward and everything works great. So I was thinking about getting a NAS, but I don't know if any inexpensive NAS (i.e. Buffalo Linkstation Live, WD My Book World Edition, D-Link DNS-321, etc.) can actually deliver the performance necessary to do this, even with gigabit ethernet?

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• If I scp a file through an intermediate server, is the file stored temporarily on the server?

  - by Blacklight Shining

  For the sake of simplicity (I find it easier to remember names than arbitrary letters), I will dispense with letters and use names to refer to the machines in this scenario. Say I have two machines, applejack and pinkie-pie, each on their own separate LANs and not in the same physical location. I also have a server, cadance, with a direct Internet-facing connection. I want to copy a file from applejack to pinkie-pie, so to avoid dealing with port forwarding and such, I set up an ssh tunnel from pinkie-pie to cadance (ssh -R etc cadance). Now I can connect to pinkie-pie from anywhere, by connecting to cadance and specifying an alternate port to use. I can also easily copy files to pinkie-pie with scp -P $that_port $some_file cadance:$some_path. My understanding of how it works is this: A secure connection is made from applejack to cadance I am authenticated to cadance A secure connection is made from applejack to pinkie-pie that spans the existing reverse tunnel and the new connection from step 1. I am authenticated to pinkie-pie Files are copied directly from applejack to pinkie-pie over this connection. Am I correct here? How secure is this approach? If I'm wrong…are files copied this way decrypted at cadance before being passed on to pinkie-pie? Is there a possibility that traces of unencrypted data could remain on cadance?

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• Windows clients unable to access Samba share on AD joined Linux box every 7 days

  - by Hassle2

  The problem: Every 7 days, 2 Windows Servers are unable to access a SMB/CIFS share. It will start working after a handful of hours. The environment: OpenFiler Linux box joined to 2003 AD Domain Foreground app on Win2003 server access the SMB/CIFS share with windows credentials Another process on Win2008 access the share via SQL Server with windows credentials The Samba version on the Linux box is 3.4.5. Security is set to ADS wbinfo and getent return back expected users and groups Does not look to be a double hop issue as it's always the 2 accounts, regardless of the calling user. There is a DNS entry in both forward and reverse lookup zone for the linux box The linux box's computer object in active directory shows that it was modified around/at the same time that the two clients started failing to access the share Trying to access the share via IP works when by name does not Rebooting the Windows server takes care of it (it's production and only restarted it once) Restarting smbd, winbind, nmbd had no effect Error in samba log for the client in question: smbd/sesssetup.c:342(reply_spnego_kerberos) Failed to verify incoming ticket with error NT_STATUS_LOGON_FAILURE! The Question: Does this look like the machine account password is changing (hence the AD object showing the updated modified date) or are the two windows clients unable to request a new ticket that works against this linux box?

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• DNS something is wrong?

  - by Nickolas R.

  Hello I am configuring bind9 on a server with two network interfaces, one is connected to the LAN and the other is connected to the Internet through NAT so bind is not faced directly to the Internet. Everything seems to work fine, clients can do both forward and reverse lookups but somethings seems strange. On the server if i try to ping www.google.com one time, a great amount of network activity is genereated, alot more that one would expect so i decided to sniff the traffic with tcpdump. When loading the dump into Wireshark i can see about 250 entries with "Standard query A" and "Standard query response" Here a some of the entries from the dump DNS Standard query A www.google.com DNS Standard query A blackhole-1.iana.org DNS Standard query A blackhole-2.iana.org DNS Standard query response DNS Standard query A ns2.isc-sns.com DNS Standard query A ns1.isc-sns.net DNS Standard query A ns3.isc-sns.info DNS Standard query response PTR b.iana-servers.net RRSIG DNS Standard query A auth2.dns.cogentco.com DNS Standard query A ns1.crsnic.net DNS Standard query A ns2.nsiregistry.net DNS Standard query A ns3.verisign-grs.net DNS Standard query A ns4.verisign-grs.net DNS Standard query PTR 79.52.19.199.in-addr.arpa I do not have too much experince with DNS yet, but i am pretty sure that something is wrong. Anybody that have an idea of whats is going on?

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• I am unable to run a client/server program in php

  - by sibi

  This is the program I am trying to run: $host = "127.0.0.1"; $port = 25003; // don't timeout! set_time_limit(0); // create socket $socket = socket_create(AF_INET, SOCK_STREAM, 0) or die("Could not create socket\n"); // bind socket to port $result = socket_bind($socket, $host, $port) or die("Could not bind to socket\n"); // start listening for connections $result = socket_listen($socket, 3) or die("Could not set up socket listener\n"); // accept incoming connections // spawn another socket to handle communication $spawn = socket_accept($socket) or die("Could not accept incoming connection\n"); // read client input $input = socket_read($spawn, 1024) or die("Could not read input\n"); // clean up input string $input = trim($input); echo "Client Message : ".$input; // reverse client input and send back $output = strrev($input) . "\n"; socket_write($spawn, $output, strlen ($output)) or die("Could not write output\n"); // close sockets socket_close($spawn); socket_close($socket); I enabled the PHP_socket option in WAMP but still I keep getting errors like unable to bind. Can someone please help me out?

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• How use DNS server to create simple HA (High availability) of my website?

  - by marc22

  Welcome, How can i use DNS server to create simple HA (High availability) of website ? For example if my web-server ( for better understanding i use internal IP in real it will be other hosting companies) 192.168.0.120 :80 (is offline) traffic go to 192.168.0.130 :80 You have right, i use bad word "hight avability" of course i was thinking about failover. Using few IP in A records is good for simple load-balancing. But not in case, if i want notice user about failure (for example display page, Oops something is wrong without our server, we working on it) against "can't establish connection". I was thinking about setting up something like this 2 DNS servers, one installed on www server Both have low TTL on my domain, set up 2 ns records first for DNS with my apache server second to other dns If user try connect he will get ip of www server using first dns, if that dns is offline (probably www server is also down) so it will try second NS record, what will point to another dns, that dns will point to "backup" page. That's what i would like to do. If You have other idea please share. Reverse proxy is not option, because IP of server can change, or i can use other country for backup.

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• Apache mod_proxy with SSL not redirecting

  - by simonszu

  I have a custom server running behind an apache reverse proxy. Since the custom server can only handle HTTP traffic, i am trying to use apache for wrapping proper SSL around it, and for some kind of HTTP authentication. So i enabled mod_proxy and mod_ssl and modified sites-available/default-ssl. The config is as following: <Location /server> order deny,allow allow from all AuthType Basic AuthName "Please log in" AuthUserFile /etc/apache2/htpasswd Require valid-user ProxyPass http://192.168.1.102:8181/server ProxyPassReverse http://192.168.1.102:8181/server </Location> The custom server is accessible from the internal network via the location specified in the ProxyPass directive. However, when the proxy is accessed from the outside, it presents the login prompt, and after successfully authenticated, i get a blank page with the words The resource can be found at http://192.168.1.102:8181/server. When i type the external URL again in an already authenticated browser instance, i am properly redirected to the server frontend. The access.log is full of entrys stating that my browser does successful GET requests, and the proxy is happily serving the /server ressource. However, the ressource isn't containing the server's frontend, but this blank page with these words on it.

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• Is this a File Header / Magic Number?

  - by Hammer Bro.

  I've got 120,000 files (way more, actually; this is just an arbitrary subset) of an unknown type. Linux file does not identify them (not that they're necessarily Linux files), nor do any other methods I've tried. There are only two hints about them that I currently have. One is that I suspect some compression is employed -- I have metadata that claims the file sizes are always some amount larger than what I observe. The other is that in 100,000 of these files, the first 16 bytes are always: ff ee ee dd 00 00 00 00 01 00 00 00 00 00 00 00 That really looks like a file header/magic number to me, but I just can't place it. Does anyone know what kind of files this would indicate? Alternatively, can anyone convince me that these suspiciously common bytes certainly do not indicate a specific file type? UPDATE I don't know the exact reverse-engineering details, but most of the files in our case are zips after the first 29(? or so) bytes are ignored. So in practice the problem is solved (we know how to process the files) but in theory the question is still unanswered -- I don't know which application routinely prepends about 29 bytes to its zips. [I'm not sure if I should leave the question open or not at this point.]

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• legit emails in junkbox

  - by acidzombie24

  Hey this is actually a reverse question. My personal email ([email protected]) is winding up in many peoples junkbox and I have no idea why. What may the cause be? Is it because it has the word Entrepreneur (and programmer) in my sig? is it because my first name is unique(european like)? Its driving me crazy. I sent out dozens of business emails a month to people I just meet so its actually hurting me much more then others :( -edit- I also want to mention this is non spam. Typically I email people I meet and say hi or to follow up. I was requested by someone to send him an email so I can test something, so I did and he replied to me 10 days later telling me he found it in his junk, like many others have said to me. -edit- bortzmeyer suggested emailing [email protected] I did and here are the results SPF check: pass DomainKeys check: pass DKIM check: pass Sender-ID check: pass SpamAssassin check: ham ---------------------------------------------------------- SpamAssassin check details: ---------------------------------------------------------- SpamAssassin v3.2.5 (2008-06-10) Result: ham (-2.6 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -2.6 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] 0.0 HTML_MESSAGE BODY: HTML included in message

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• Routing for Two Hosts Behind a IPSec Tunnel

  - by Brent

  Network A 10.110.15.0/24 Firewall is .1 Host A is .2 Network B 10.110.16.0/24 Firewall is .1 Host B is .2 Two Cisco ASA's. IPSec tunnel with a crypo map that secures 10.110.15.0/24 <- 10.110.16.0/24. Let's say two hosts, 10.110.15.2 and 10.110.16.2 need to talk to each other. Normally I have to enter a persistent static route on a each host along the lines of: route add 10.110.16.0 mask 255.255.255.0 10.110.15.1 metric 1 -p (on the "A" box) I also have to enter another persistent static route on the .16 host in order for the traffic to know how to get back to the .15 network. Note that the default for each machine IS the firewall, so .1. I have no problem adding persistent routes on Windows/ESX/*nux machines but what about a smart switch in the .16 network that I want to manage from the .15 network. Do I need to run a routing protocol? Do I need to have Reverse Route Injection enabled on both ends of the IPSec tunnel? Should I add a route on the firewall? If so, how do you formulate it? Does it get a metric of 1 and my default route 0.0.0.0 get a metric of 2?

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• subdomain .htaccess redirection via ssh remote port forwarding

  - by Achim

  I ask you to help me URL redirecting a subdomain to a SSH remote forwarded port: The current setup is the following: The server A have a local webserver running on port 80. This server is connected to a DSL line or a GPRS connection where the IP address changes often. To prevent a DynDNS setup we established a SSH remote port forwarding to a server B with a static IP adress. This is done on server A by the following statement: ssh -N -p 80 -g -R 10000:localhost:80 tunneling@<Server B IP> So by accessing the new port 10000 of the servers B IP-adress, all traffic is forwarded to the server A port 80 - this works fine! But to offer a more comfortable url to the user I want to hide the server B IP-adress and offer a subdomain. My domain provider allows to add subdomains and redirections to some other servers. In general, this works, I've tested this with different servers. But it don't work if the destination is the port forwarded port of server B. The initial redirection is done, the request is send to server A and the response are forwarded to server B and shown in the browser - fine. But then the URL within the browser is switched away from the subdomain to the IP:port of server B. So the user don't see the subdomain in the URL string of the browser anymore. I've tried this with my providers subdomain redirection, as well as .htaccess redirect, as well as META refresh, the problem always persist. Is there a parameter in the ssh reverse forwarding setup (I guess this is the place where the fix have to be) to keep the typed in subdomain URL and not show the IP. Thanks Achim

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• HAProxy "503 Service Unavailable" for webserver running on a KVM virtual machine

  - by Menda

  I'm setting up a server with KVM (IP 192.168.0.100) and I have created inside of it one virtual machine using network bridging at 192.168.0.194. This virtual machine has an nginx instance running, which I can access from the server or from any computer computer in the internal network just typing in the browser http://192.168.0.194. However, I try configure HAProxy in the same server that hosts KVM and looking the status page of HAProxy it always shows the virtual machine as "DOWN". If I try from the server http://localhost, it should be the same than if I go to http://192.168.0.194. My goal is to build a reverse proxy, but I tried this little example and won't work. What am I doing bad? This is my config file in the server: # /etc/haproxy/haproxy.cfg global maxconn 4096 user haproxy group haproxy daemon defaults log global mode http option httplog option dontlognull retries 3 option redispatch maxconn 2000 contimeout 5000 clitimeout 50000 srvtimeout 50000 listen ServerStatus *:8081 mode http stats enable stats auth haproxy:haproxy listen Server *:80 mode http balance roundrobin cookie JSESSIONID prefix option httpclose option forwardfor option httpchk HEAD /check.txt HTTP/1.0 server mv1 192.168.0.194:80 cookie A check Thanks.

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• Losing JSESSIONID when using ProxyHTMLURLMap

  - by Matthew Schmitt

  I've setup a reverse proxy between an Apache front-end and multiple Tomcat backends. The below block of code includes the ProxyHTMLURLMap param so that the HTML can be rewritten to remove the Tomcat context path. With this setup in place, after logging into my application, an initial JSESSIONID is set properly, but when navigating to any other page, this JSESSIONID is lost and another one is set by the application. I should mention that the initial login directs to a URL that includes the current context path (i.e. https://app.domain.com/context/home), but when navigating to another page, that context path is not present in the URL (i.e. https://app.domain.com/page2). <Proxy balancer://happcluster> BalancerMember ajp://happ01.h.s.com:8009 route=worker1 loadfactor=10 timeout=15 retry=5 BalancerMember ajp://happ02.h.s.com:8009 route=worker2 loadfactor=10 timeout=15 retry=5 BalancerMember ajp://happ03.h.s.com:8009 route=worker3 loadfactor=5 timeout=15 retry=5 BalancerMember ajp://happ04.h.s.com:8009 route=worker4 loadfactor=5 timeout=15 retry=5 BalancerMember ajp://happ05.h.s.com:8009 route=worker5 loadfactor=5 timeout=15 retry=5 ProxySet lbmethod=bytraffic ProxySet stickysession=JSESSIONID </Proxy> ProxyPass /context balancer://happcluster/context ProxyPass / balancer://happcluster/context/ <Location /context/> # Rewrite HTTP headers and HTML/CSS links for everything else ProxyPassReverse / ProxyPassReverseCookieDomain / app.domain.com ProxyPassReverseCookiePath / /context ProxyHTMLURLMap /context/ / # Be prepared to rewrite the HTML/CSS files as they come back # from Tomcat SetOutputFilter INFLATE;proxy-html;DEFLATE </Location> Has anyone ever run into a similar situation?

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• Unable to ping domain.local, but can ping server.domain.local

  - by Force Flow

  I have a single windows 2008 server running active directory, group policy, and DNS. DHCP is running from the firewall (this is because there are multiple branch locations, and each location has its own firewall supplying DHCP. But, for this problem, the server and workstation are at the same location). On an XP workstation, if I try to visit \\domain.local or ping domain.local, the workstation can't find it. A ping returns Ping request could not find host domain.local. If I try to visit \\server or \\server.domain.local or ping server or server.domain.local, I'm able to connect normally. If I ping or visit domain.local on the server, I'm able to connect normally. A-Records are in place in the DNS service for server, domain.local, and server.domain.local. A reverse lookup zone also is enabled and PTR records are in place. If I wait 20-30 minutes, I am eventually able to ping and visit domain.local--but, when attempting to ping, it takes 30 second to return an IP address. I am also unable to join a new workstation to the domain during this wait period. If I try, the error message returned is "network path not found". Is there something I'm missing?

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• Installing mod_pagespeed (Apache module) on CentOS

  - by Sid B

  I have a CentOS (5.7 Final) system on which I already have Apache (2.2.3) installed. I have installed mod_pagespeed by following the instructions on: http://code.google.com/speed/page-speed/download.html and got the following while installing: # rpm -U mod-pagespeed-*.rpm warning: mod-pagespeed-beta_current_x86_64.rpm: Header V4 DSA signature: NOKEY, key ID 7fac5991 [ OK ] atd: [ OK ] It does appear to be installed properly: # apachectl -t -D DUMP_MODULES Loaded Modules: ... pagespeed_module (shared) And I've made the following changes in /etc/httpd/conf.d/pagespeed.conf Added: ModPagespeedEnableFilters collapse_whitespace,elide_attributes ModPagespeedEnableFilters combine_css,rewrite_css,move_css_to_head,inline_css ModPagespeedEnableFilters rewrite_javascript,inline_javascript ModPagespeedEnableFilters rewrite_images,insert_img_dimensions ModPagespeedEnableFilters extend_cache ModPagespeedEnableFilters remove_quotes,remove_comments ModPagespeedEnableFilters add_instrumentation Commented out the following lines in mod_pagespeed_statistics <Location /mod_pagespeed_statistics> **# Order allow,deny** # You may insert other "Allow from" lines to add hosts you want to # allow to look at generated statistics. Another possibility is # to comment out the "Order" and "Allow" options from the config # file, to allow any client that can reach your server to examine # statistics. This might be appropriate in an experimental setup or # if the Apache server is protected by a reverse proxy that will # filter URLs in some fashion. **# Allow from localhost** **# Allow from 127.0.0.1** SetHandler mod_pagespeed_statistics </Location> As a separate note, I'm trying to run the prescribed system tests as specified on google's site, but it gives the following error. I'm averse to updating wget on my server, as I'm sure there's no need for it for the actual module to function correctly. ./system_test.sh www.domain.com You have the wrong version of wget. 1.12 is required.

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• Measure Total Bandwidth for Billing

  - by TonyZ

  I am setting up a new network which customers will host their applications on. It needs to be able to scale out to a few hundred servers and each server will have several VMs on it. Right now in my test environment, after the telco router, we are using a Linux router/firewall which is then connected to a Layer 2 switch. Could be a layer 3 in the future. I need to track total bandwidth per VM for each machine, and I need to do it in a way that it is not part of the VM. Each VM will have a private class ip address which is Natted by the gateway, or we may eventually run more than firewall/reverse proxy off a layer 3 switch. So my thinking is that I can do it off of a promiscuous port on the switches, or at the gateway firewall. I would like to have an out of the box solution, preferably open source. Does anyone have suggestions on the easiest way to set this up, and the easiest tool to use. I have looked at the web sites for Nagios, Zenoss, Zabbix, ntops on the firewall, etc. It is hard to ascertain just from the web sites if they do exactly this or not. Obviously, performance is also somewhat key here. Anything running on the gateway should not drag it down doing traffic accounting. Thanks for any thoughts. Tony Zakula

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• Is there a way to do something like LVM over NFS?

  - by warren

  I realize that since NFS is not block-level, LVM can't be used directly. However: is there a way to combine multiple NFS exports (from, say, 3 servers) into one mount point on a different server? Specifically, I'd like to be able to do this on RHEL 4 (or 5, and re-export the combined mount to my RHEL 4 server). expansion The reason I pegged lvm is that I want a bunch of exported mounts (servera:/mnt/export, serverb:/mnt/export, serverc:/mnt/export, etc) to all mount at /mnt/space so that my /mnt/space on this server (serverx) as one large filesystem. Yes, I know that re-exporting is generally a Bad Thing™ but thought it might work, if there was a way to accomplish this on a newer release as opposed to an older one From reading the unionfs docs, it appears that I can't use it over a remote connection - have I misread it? More accurately, since Union FS merges the contents of multiple branches, but makes them appear as one, it doesn't seem to go in reverse: I'm trying to mount a bunch of NFS points in a merged fashion, then write to them - not caring where data goes, a la LVM .

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