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• Active Directory server down, recovering without reinstalling

  - by whatever

  My Windows 2003 server suddenly ceased to function as a DC (this server is the only DC of the domain). All AD related services are down. The only way I can login to the AD is physically to the machine. Everytime I access an AD-related service (e.g. "AD users and computers") I get the below error: Naming information cannot be located because: The specified directory service attribute or value does not exist. Contact your system administrator to verify that your domain is properly configured and is currently online. I found the below system event which matches the time when the issue started, this re-occurs everytime I reboot the server. NTDS General | Global Catalog | Active Directory was unable to establish a connection with the global catalog. Additional Data Error value: 1355 The specified domain either does not exist or could not be contacted. Internal ID: 3200d33 I started the troubleshooting with DNS. Netdiag throws the below error although I think this is simply a consequence of not being able to access the Global Catalog. The procedure entry point DnsGetPrimaryDomainName_UTF8 could not be located in the dynamic link library DNSAPI.dll. Anyway DNS seems OK because I can ping the DC FQDN from the DC itself. I found the below solution which is supposed to help by doing some cleanup of the metadata: http://support.microsoft.com/kb/216498 If I follow procedure 1 here is what I get at step 9: no current site Domain - DC=<mydomain>,DC=<com> no current server no current naming context I can continue the procedure until step 14. I haven't tested step 15 as my understanding is that I will have to reinstall the whole AD again. Is there any way I can recover my AD from there without having to reinstall the whole thing? Update: Yes, the server was powered off/on because reboot would take forever (not because I thought power cycling the unit would fix it more than a reboot).

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• Iptables - forward email ports?

  - by Emmet Brown

  im trying to open some local ports (LAN) and then re-direct them to another server (WAN) using iptables. Here is my config: #WAN allow-hotplug eth1 auto eth1 iface eth1 inet static #Tarjeta red WAN address 192.168.2.2 gateway 192.168.2.1 netmask 255.255.255.0 #LAN allow-hotplug eth0 auto eth0 iface eth0 inet static address 192.168.16.6 netmask 255.255.255.0 network 192.168.16.0 broadcast 192.168.16.255 I try this: iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 110 -j DNAT --to 200.40.30.218:110 iptables -A FORWARD -p tcp -i eth0 -o eth1 -d 200.40.30.218 --dport 110 -j ACCEPT iptables -A PREROUTING -t nat -i eth0 -p tcp --dport 25 -j DNAT --to 200.40.30.218:25 iptables -A FORWARD -p tcp -i eth0 -o ethq -d 200.40.30.218 --dport 25 -j ACCEPT but, it did not work. i also try changeing eth0 to eth1 (and eth1 to eth0) but nothing happened. Starting Nmap 5.00 ( http://nmap.org ) at 2011-10-03 14:44 UYST Interesting ports on 192.168.16.6: Not shown: 997 closed ports PORT STATE SERVICE 22/tcp open ssh 111/tcp open rpcbind 8080/tcp open http-proxy Im running debian. Can u guys help me to check what is happening? edit: IPTABLES-SAVE # Generated by iptables-save v1.4.8 on Mon Oct 3 15:43:14 2011 *mangle :PREROUTING ACCEPT [139993:77867651] :INPUT ACCEPT [139385:77761761] :FORWARD ACCEPT [186:12071] :OUTPUT ACCEPT [173556:74341650] :POSTROUTING ACCEPT [173734:74352988] COMMIT # Completed on Mon Oct 3 15:43:14 2011 # Generated by iptables-save v1.4.8 on Mon Oct 3 15:43:14 2011 *nat :PREROUTING ACCEPT [1649:190626] :POSTROUTING ACCEPT [6729:339646] :OUTPUT ACCEPT [6697:337660] -A PREROUTING -i eth0 -p tcp -m tcp --dport 110 -j DNAT --to-destination 200.40.30.218:110 -A PREROUTING -i eth0 -p tcp -m tcp --dport 25 -j DNAT --to-destination 200.40.30.218:25 COMMIT # Completed on Mon Oct 3 15:43:14 2011 # Generated by iptables-save v1.4.8 on Mon Oct 3 15:43:14 2011 *filter :INPUT ACCEPT [138307:77066136] :FORWARD ACCEPT [168:11207] :OUTPUT ACCEPT [172288:73655708] -A FORWARD -d 200.40.30.218/32 -i eth0 -o eth1 -p tcp -m tcp --dport 110 -j ACCEPT -A FORWARD -d 200.40.30.218/32 -i eth0 -o ethq -p tcp -m tcp --dport 25 -j ACCEPT COMMIT # Completed on Mon Oct 3 15:43:14 2011 Regards

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• Checking for valid document files

  - by sweb

  I need a simple way to check if my files are valid documents (pdf, doc, docx, ppt, pptx, xls, xlsx, odt, ods, odp and etc). I can't use file because magic does not work well at all. For example, for PDF files, this is my output. sweb@sweb-laptop: /media/files/ebooks/PDF and CHM$ file --mime *. Pdf PHP 5 for Dummies. Pdf: application/pdf; charset=binary PHP 6 and MySQL 5 for Dynamic Web Sites. Pdf: application/octet-stream; charset=binary PHP6 and MySQL Bible. Pdf: application/pdf; charset=binary PHP6.pdf: application/octet-stream; charset=binary PHP and MySQL for Dummies SE. Pdf: application/pdf; charset=binary For example, I use abiword – which is a good tool – but it converts any format. It doesn't check for valid documents: abiword --to=txt --to-name=output.txt audio.mp3 Is there any command available to check for valid documents then?

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• How to avoid en.voyages-sncf.com redirecting to uk.voyages-sncf.com?

  - by Mark Smith

  OK, so en.voyages-sncf.com is French Railways' English language website with full functionality for train booking in France - it sells iDTGV, offers seating options etc. uk.voyages-sncf.com is their UK subsidiary, with reduced functionality, no seat options, no iDTGV etc. Previously, I have been able to select 'Other countries (EUR)' top right and go from the uk version to the en version, or just type in the direct url 'en.voyages-sncf.com and go there. Now, they seem to have implemented an automatic redirect so whenever I enter 'en.voyages-sncf.com' on my UK-based PC or indeed try to select 'Other countries (EUR)' it automatically bumps me to uk.voyages-sncf.com, which I don't want. I can't get onto en.voyages-sncf at all. So, short of using a heavyweight solution like using a non-UK proxy server or downloading the TOR browser, is there any simple solution? Like telling my browser to go to en.voyages-sncf, go directly to en.voyages-sncf and no other site, do not pass go, do not collect £200, do not go anywhere else, ignore all redirects and do what you're told by ME, not by those Machiavellian so-and-sos?

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• Dedicated Mouse and Keyboard on Virtual Box VM

  - by Myersguy

  To all super users, Currently I am trying to run virtual box on my second monitor, with a dedicated mouse and keyboard. However, doing so has not proven easy. There has been times where the mouse works, but not the keyboard, vice versa, or nothing works at all. The biggest problem I am running into is this: When enabling the USB mouse and keyboard from the VM, I get an error: 'USB Device is busy with a previous request.' The only thing that is using second mouse and keyboard, however, is Windows. The other error I have received stated that the VM was unable to create a proxy for the device. Additionally, the VM occasionally will disable the secondary keyboard entirely, requiring me to unplug and replug it into my PC to re-enable it again. Keyboard auto-capture is disabled, and while a solution I was reading online stated to turn off mouse integration, that option is grayed out on my machine. Any help would be appreciated. Thanks. /firstquestion.

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• Locate devices within a building

  - by ams0

  The situation: Our company is spread between two floors in a building. Every employee has a laptop (macbook Air or MacbookPro) and an iPhone. We have static DHCP mappings and DNS resolution so every mobile gets a name like employeeiphone.example.com, every macbook air gets a employeelaptop.example.com and every macbook pro gets a employeelaptop.example.com on the Ethernet interface (the wifi gets a dynamic IP from a small range dedicated for the purpose). We know each and every MAC address of phones and laptops, since we do DHCP static mapping (ISC DHCP server runs on linux). At each floor we have a Netgear stack of two switches, connected via 10GB fiber to each other. No VLANs so far. At every floor there are 4 Airport Extreme making a single SSID network with WPA2 authentication. The request: Our CTO wants to know who is present at which floor. My solution (so far): Every switch contains an table listing MAC address and originating port. On each switch stack, all the MAC addresses coming from the other floor are listed as coming on port 48 (the fiber link). So I came up with: 1) Get the table from each switch via SNMP 2) Filter out the ones associated with port 48 3) Grep dhcpd.conf, removing all entries not *laptop and not *iphone 4) Match the two lists for each switch, output in JSON or XML 5) present the results on a dashboard for all to see I wrote it in bash with a lot of awk and sed, it kinda works but I always have for some reason stale entries in the switch lookup tables, making it unreliable; some people may have put their laptop to sleep, their iphones drop connections after a while, if not woken up and so on..I searched left and right, we are prepared to spend a little on the project too (RFIDs?), does anybody do something similar? I can provide with the script if needed (although it's really specific to our switches and naming scheme). Thanks! p.s. perhaps is this a question for stackoverflow? please move if it so.

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• Samba access works with IP address only

  - by Sebastian Rittau

  I added a Debian etch host (hostname: webserver, IP address: 192.168.101.2) running Samba to a Windows network with a Windows 2003 PDC (IP address 192.168.101.3). The Samba server exports a public guest share, called "Intranet". The server shows up fine in the network, but trying to click on it produces an error dialog, stating I don't have the necessary permissions. So does entering \webserver manually and using \webserver\internet states that the path does not exist. Interestingly, accessing the share by IP address (\192.168.101.2 or \192.168.101.2\intranet) works fine. DNS is configured correctly, and "smbclient //webserver/intranet" on another Linux client works fine. One complicating issue is that the webserver is only a VMware virtual machine running on PDC server. Here is our smb.conf: [global] workgroup = Foobar server string = Webserver wins support = yes ; commenting out these wins server = 192.168.101.3 ; two lines has no effect dns proxy = no guest account = nobody [... snipped some unrelated bits, like logging ...] security = share [... snipped some password-related things ...] domain master = no [intranet] comment = Intranet path = /srv/webserver/contents browseable = yes guest ok = yes guest only = yes read only = yes create mask = 0775 directory mask = 0775

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• solution for an offline server

  - by dashmug

  I'm trying to setup a development server at work that will ideally be able to test drive a couple of projects in PHP, Rails, or Django (not always running at the same time). I develop the apps locally on a Mac and then I'll put the projects up on this server for testing with my actual users (non-techies) before deploying to a production server. My problem is that we have a very poor internet connection (almost negligible) at work and doing the usual apt-get/yum/ports (make, clean, install) processes for setting up servers always get their packages from online repositories somewhere. I know I could probably download the source and then compile them myself but that's going to be too much of a hassle for me. I'm thinking about two solutions: Plan A: Run a server VM on my Mac and then use this VM as the source repository for the offline server. I've read about Ubuntu's apt-proxy and it seems to be good enough though I haven't tried it yet. I'm not sure if this is possible but can I simply do apt-get install nginx --downloadonly so that the package and its dependencies will be downloaded into my VM and my server can use the VM as the source repo for apt-get? Plan B: Run a server VM on my Mac (which I can setup/update easily when I'm home) and then clone the VM to the offline development server. Maybe I should simply make the server a VM host so I can simply copy the VM over. I think this is okay for the first-time setup but subsequent updates will take too long (cloning the VM image). If I was working on Windows, I imagine it'd be easier because most services have an installer file that I can download and then run at the server. If you could suggest another way, it would be much appreciated. Update: From Michael Hampton's answer, I found a possible solution which is apt-cacher. I also found this page on Ubuntu's website. I wonder if there is a better tool than this one.

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• Apache LocationMatch does not work for group

  - by dma_k

  I would like to configure Apache to proxy mldonkey running at localhost. Initially I have used the following configuration: <IfModule mod_proxy.c> <LocationMatch /(mldonkey|bittorrent)/> ProxyPass http://localhost:4080/ ProxyPassReverse http://localhost:4080/ </LocationMatch> </IfModule> and it didn't worked! error.log reads [error] [client 192.168.1.1] File does not exist: /var/www/mldonkey which means that Apache does not intersect the URL. However, when I change the regexp to following: <LocationMatch /mldonkey/> it started to work (i.e. mod_proxy functions OK, more over all ). I have tried the following alternatives: <LocationMatch ^/(mldonkey|bittorrent)/> <LocationMatch ^/(mldonkey|bittorrent)/.*> <LocationMatch ^/(mldonkey|bittorrent)> <LocationMatch /(mldonkey|bittorrent)> <LocationMatch "^/(mldonkey|bittorrent)/"> <LocationMatch "/(mldonkey|bittorrent)"> <LocationMatch "/(mldonkey)"> <LocationMatch "/(mldonkey)/"> with no positive result. I am stuck. Please give me a hint where to look at. P.S. Apache Server 2.2.19. P.P.S. Would be happy if <LocationMatch> would work, without using the heavy artillery of mod_rewrite.

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• Nginx Removes the index.php from URL

  - by codeHead

  I have a codeigniter php application on nginx. It works as expected on Apache but after moving to nginx, I noticed that the index.php is automatically removed from the URL in all my links. Infact when I try using index.php it does not go to the desired URL but gets redirected to my default controller. below is a coopy of my nginx.conf file. server{ listen 80; server_name mydomainname.com; root /var/www/domain/current; # index index.php; error_log /var/log/nginx/error.log; access_log /var/log/nginx/access.log main; location / { # Check if a file or directory index file exists, else route it to index.php. try_files $uri $uri/ /index.php ; } location ~* \.php { fastcgi_pass backend; include fastcgi.conf; fastcgi_buffer_size 128k; fastcgi_buffers 4 256k; fastcgi_busy_buffers_size 256k; fastcgi_read_timeout 500; #fastcgi_param SCRIPT_FILENAME $document_root/index.php; add_header Expires "Thu, 01 Jan 1970 00:00:01 GMT"; add_header Cache-Control "no-cache, no-store, private, proxy-revalidate, must-revalidate, post-check=0, pre-check=0"; add_header Pragma no-cache; add_header X-Served-By $hostname; } location ~* ^.+\.(css|js)$ { expires 7d; add_header Pragma public; add_header Cache-Control "public"; } # set expiration of assets to MAX for caching location ~* \.(ico|gif|jpe?g|png)(\?[0-9]+)?$ { expires max; log_not_found on; } } I need to use my URL With the index.php -- please help.

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• server_name seems to be ignored in nginx

  - by user46171

  I have two domains set up in nginx.conf. Both are using SSL with their own certificates, and proxy to Apache. However the second domain is completely ignored, and nginx always resolves to the first domain. I can't see what in the issue is with this configuration, having set the server_name in each case correctly (as far as I can see): http { include mime.types; default_type application/octet-stream; keepalive_timeout 65; upstream site { # real IP addresses masked server xx.xxx.x.xxx; server xx.xxx.x.xxx; } server { # this domain always works listen 443; server_name *.first-site.com; ssl on; ssl_certificate /var/ssl/first-site.crt; ssl_certificate_key /var/ssl/first-site.key; location / { access_log off; proxy_connect_timeout 15; proxy_next_upstream error; proxy_pass http://site; proxy_set_header Host $http_host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-Protocol https; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_redirect off; } } server { # this domain is ignored, always resolves to first-site.com listen 443; server_name *.second-site.com; ssl on; ssl_certificate /var/ssl/second-site.crt; ssl_certificate_key /var/ssl/second-site.key; location / { access_log off; proxy_connect_timeout 15; proxy_next_upstream error; proxy_pass http://site; proxy_set_header Host $http_host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-Protocol https; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_redirect off; } } }

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• Unusual HEAD requests to nonsense URLs from Chrome

  - by JeremyDWill

  I have noticed unusual traffic coming from my workstation the last couple of days. I am seeing HEAD requests sent to random character URLs, usually three or four within a second, and they appear to be coming from my Chrome browser. The requests repeat only three or four times a day, but I have not identified a particular pattern. The URL characters are different for each request. Here is an example of the request as recorded by Fiddler 2: HEAD http://xqwvykjfei/ HTTP/1.1 Host: xqwvykjfei Proxy-Connection: keep-alive Content-Length: 0 User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.13 (KHTML, like Gecko) Chrome/9.0.597.98 Safari/534.13 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en;q=0.8 Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3 The response to this request is as follows: HTTP/1.1 502 Fiddler - DNS Lookup Failed Content-Type: text/html Connection: close Timestamp: 08:15:45.283 Fiddler: DNS Lookup for xqwvykjfei failed. No such host is known I have been unable to find any information through Google searches related to this issue. I do not remember seeing this kind of traffic before late last week, but it may be that I just missed it before. The one modification I made to my system last week that was unusual was adding the Delicious add-in/extension to both IE and Chrome. I have since removed both of these, but am still seeing the traffic. I have run virus scan (Trend Micro) and HiJackThis looking for malicious code, but I have not found any. I would appreciate any help tracking down the source of the requests, so I can determine if they are benign, or indicative of a bigger problem. Thanks.

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• Very high CPU and low RAM usage - is it possible to place some of swap some of the CPU usage to the RAM (with CloudLinux LVE Manager installed)?

  - by Chriswede

  I had to install CloudLinux so that I could somewhat controle the CPU ussage and more importantly the Concurrent-Connections the Websites use. But as you can see the Server load is way to high and thats why some sites take up to 10 sec. to load! Server load 22.46 (8 CPUs) (!) Memory Used 36.32% (2,959,188 of 8,146,632) (ok) Swap Used 0.01% (132 of 2,104,504) (ok) Server: 8 x Intel(R) Xeon(R) CPU E31230 @ 3.20GHz Memory: 8143680k/9437184k available (2621k kernel code, 234872k reserved, 1403k data, 244k init) Linux Yesterday: Total of 214,514 Page-views (Awstat) Now my question: Can I shift some of the CPU usage to the RAM? Or what else could I do to make the sites run faster (websites are dynamic - so SQL heavy) Thanks top - 06:10:14 up 29 days, 20:37, 1 user, load average: 11.16, 13.19, 12.81 Tasks: 526 total, 1 running, 524 sleeping, 0 stopped, 1 zombie Cpu(s): 42.9%us, 21.4%sy, 0.0%ni, 33.7%id, 1.9%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 8146632k total, 7427632k used, 719000k free, 131020k buffers Swap: 2104504k total, 132k used, 2104372k free, 4506644k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 318421 mysql 15 0 1315m 754m 4964 S 474.9 9.5 95300:17 mysqld 6928 root 10 -5 0 0 0 S 2.0 0.0 90:42.85 kondemand/3 476047 headus 17 0 172m 19m 10m S 1.7 0.2 0:00.05 php 476055 headus 18 0 172m 18m 9.9m S 1.7 0.2 0:00.05 php 476056 headus 15 0 172m 19m 10m S 1.7 0.2 0:00.05 php 476061 headus 18 0 172m 19m 10m S 1.7 0.2 0:00.05 php 6930 root 10 -5 0 0 0 S 1.3 0.0 161:48.12 kondemand/5 6931 root 10 -5 0 0 0 S 1.3 0.0 193:11.74 kondemand/6 476049 headus 17 0 172m 19m 10m S 1.3 0.2 0:00.04 php 476050 headus 15 0 172m 18m 9.9m S 1.3 0.2 0:00.04 php 476057 headus 17 0 172m 18m 9.9m S 1.3 0.2 0:00.04 php 6926 root 10 -5 0 0 0 S 1.0 0.0 90:13.88 kondemand/1 6932 root 10 -5 0 0 0 S 1.0 0.0 247:47.50 kondemand/7 476064 worldof 18 0 172m 19m 10m S 1.0 0.2 0:00.03 php 6927 root 10 -5 0 0 0 S 0.7 0.0 93:52.80 kondemand/2 6929 root 10 -5 0 0 0 S 0.3 0.0 161:54.38 kondemand/4 8459 root 15 0 103m 5576 1268 S 0.3 0.1 54:45.39 lvest

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• ASP.NET, IS7 and IE8 caching?

  - by jdege

  We're suddenly having problems with some of our sites having old versions of .css and .js files show up in the browser. Generally, these problems go away, when the user clears cache in the browser. Is there something we can do either in the code or in IIS7, to convince the browser to not used the cached files? In our weirdest case, we have one customer whose users hit our site, and get an old version of a js file. They clear cache, load the page, get the current version, and the page runs fine. Then they load the file again, and suddenly have the old version, again. Any ideas as to how that might be happening? I can think of three: The browser is somehow holding on to the old version, when we clear cache, and is putting it back in the cache, before the second page load. One of our servers has an old version of the file, and while the first page load after a clear cache pulls it from one of the servers with the current version, second and subsequent page loads pull it from the server that has the old version. The first load after a clear cache goes straight to our servers, while subsequent loads pull the file from the cache on the customer's web proxy. I have to say, all three of those scenarios seem outlandishly unlikely, but it's a repeatable behavior. Any ideas?

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• Using Openfire for distributed XMPP-based video-chat

  - by Yitzhak

  I have been tasked with setting up a distributed video-chat system built on XMPP. Currently my setup looks like this: Openfire (XMPP server) + JingleNodes plugin for video chat OpenLDAP (LDAP server) for storing user information and allowing directory queries Kerberos server for authentication and passwords In testing with one set of machines (i.e. only three), everything works as expected: I can log in to Openfire and it looks up the user information in the OpenLDAP database, which in turn authenticates my user with Kerberos. Now, I want to have several clusters, so that there is a cluster on each continent. A typical cluster will probably contain 2-5 servers. Users logging in will be directed to the closest cluster based on geographical location. Something that concerns me particularly is the dynamic maintenance of contact lists. If a user is using a machine in Asia, for example, how would contact lists be updated around the world to reflect the current server he is using? How would that work with LDAP? Specific questions: How do I direct users based on geographical location? What is the best architecture for a cluster? -- would all traffic need to come into a load-balancer on each one, for example? How do I manage the update of contact lists across all these servers? In general, how do I go about setting this up? What are the pitfalls in doing this? I am inexperienced in this area, so any advice and suggestions would be appreciated.

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• Server taking too long to respond error

  - by DCJones

  Hi, This is my first post on serverFault and my first entry in to web server configuration. The hardware and software. CPU: GenuineIntel, Intel(R) Core(TM)2 Duo CPU E7500 @ 2.93GHz OS: Linux 2.6.18-128.el5 Memory: 2Gb Background. I am running a small database (MySQL), around 1000 records with each record containing 44 fields. At the start of each day “00:01” the tables are cleared and populated with fresh data. The are 10 remote PCs all running Winodws XP and Firefox internet browser. All remote PC’s are connected to the internet using a min 4Gb broadband connection. Each remote PC runs a URL which displays a dynamic page of data which is refreshed every 20 seconds. This is a continual process 24 hours a day. I problem I am having is on odd occasions throughout the day the PC browser error with “Server taking too long to respond error”. What I am trying to find our is if I have the correct setting in the httpd.conf file on the server. Any help or advice anyone can provide would be very helpful. Best regards Dereck Server config file: httpd.conf ServerRoot "/etc/httpd" PidFile run/httpd.pid Timeout 120 KeepAlive On MaxKeepAliveRequests 200 KeepAliveTimeout 5 StartServers 8 MinSpareServers 5 MaxSpareServers 20 ServerLimit 256 MaxClients 254 MaxRequestsPerChild 4000 StartServers 2 MaxClients 150 MinSpareThreads 25 MaxSpareThreads 150 ThreadsPerChild 25 MaxRequestsPerChild 0

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• How i can setup a nginx cache strategy that first try amazon s3, then memcache and do a fallback on miss?

  - by Tim

  i have a large site with lot of pages that almost never change, right now i am using two memcache servers (amazon elasticache), but this its really expensive. Thats why for this files that barely never change i want to upload them to amazon s3 and shutdown 1 memcache server. Here is my conf; location ~ /longterm/(.*){ proxy_pass http://amazonS3bucket; proxy_intercept_errors on; proxy_next_upstream http_404; error_page 404 503 = @fallback_memcached } location @fallback_memcache { set $memcached_key $uri; memcached_pass name:11211; error_page 404 @fallback; } location @fallback { try_files $uri $uri/index.html } I dont know why but the config doesnt work on the final fallback; if i got an amazon S3 hit it works, if i got an amazon S3 miss and a memcache hit it works, but if i got an amazon S3 miss then a memcache miss when it try to resolve the las fallback it fails. I am also thinking in use the amazon s3 fuse http://code.google.com/p/s3fs/ instead of the proxy pass i think it would be easier for implement, i would also be less performant?

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• Apache Virtual Host with directory aliases

  - by brechtvhb

  Hi, I'm trying to set up a dynamic virtual host in apache with a directory alias pointing to a difirent path for every domain. Here's what I'm trying to achive. Say I have 2 domains: * www.domain1.com * www.domein2.com I want both to point to the same index.php file (C:/cms/index.php). Now the hard part ... I want directories or certain file types to point to a diffirent path for each domain. Example: * www.domain1.com/layout -> C:/store/www.domain1.com/layout * www.domain2.com/layout -> C:/store/www.domain2.com/layout * www.domain1.com/image.png -> C:/store/www.domain1.com/image.png * www.domain2.com/image.png -> C:/store/www.domain2.com/image.png However the admin directory should point to the same path again for all sites * www.domain1.com/admin -> C:/cms/admin * www.domain2.com/admin -> C:/cms/admin Is there a way to achieve this kind of behaviour in apache 2.2 without having to create a virtualhost entry for each new domain?

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• Duplicate forwarded messages in Blackberry when using BIS

  - by Avery Payne

  Our Setup External email arrives at a Postfix server, is scanned, and then forwarded via settings in transport (using the RELAY:[{ip-address}] for a given address) to an Exchange 2007 server. Some users are on Exchange, but a few are still on the Postfix server (they will be moved in the near future). IMAPS is provided for external connections via Dovecot; in-house, IMAP is provided for the Gateway and native MAPI is used for Exchange/Outlook. Blackberries are connected via BIS, which uses Dovecot as a reverse-proxy IMAPS service to connect to Exchange (when the mailbox exists on Exchange, otherwise it connects to the mailbox on the gateway). The Issue We have a user that, when they forward an email on their Outlook client, they get a duplicate of the original message on their Blackberry. When I say duplicate, I mean that they have a copy of the forwarded version of the message (i.e. their version of the message that they obtained hitting the forward button), and a copy of the original message that shows up at the same time. The expected behavior is to just see the forwarded message, not the forwarded message and a 2nd copy of the original message. We've only seen this with Outlook users that also have a Blackberry. Other IMAP clients, such as OS X Mail or Thunderbird, do not exhibit this behavior when connecting to the Exchange server; forwarded messages work as expected. The Questions what is causing this to happen? why does it only affect Outlook/Blackberry setups, and not TBird/Blackberry or OSX-Mail/Blackberry? how do we get it to stop, before people go insane and never forward messages again?

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• Cisco 7206vxr cpu reducing

  - by naimson

  I have a 7206VXR (NPE-G2) . At the rate of 140 kpps i gain 80% of cpu . So i looking for ways how to reduce it? So i want to turn off netflow(but don't want to this,monitoring is highly important for me), but it will give me only 10-20% ? At this moment with 84kpps i have 58% sh processes cpu sorted give me this. PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process 109 163534600 537236763 304 35.38% 32.83% 16.85% 0 IP Input 67 829396 52280 15864 0.15% 0.01% 0.00% 0 Per-minute Jobs 68 5542736 3053476 1815 0.15% 0.18% 0.16% 0 Per-Second Jobs 51 635852 1116315 569 0.07% 0.03% 0.02% 0 Net Background 329 120396 4607274 26 0.07% 0.00% 0.00% 0 EIGRP-IPv4 Hello 105 50508 95032488 0 0.07% 0.05% 0.05% 0 IPAM Manager 6 4068580 476916 8531 0.00% 0.07% 0.05% 0 Check heaps 7 7768 3634 2137 0.00% 0.00% 0.00% 0 Pool Manager 8 0 1 0 0.00% 0.00% 0.00% 0 DiscardQ Backgro 10 8 708 11 0.00% 0.00% 0.00% 0 WATCH_AFS 5 0 1 0 0.00% 0.00% 0.00% 0 RO Notify Timers 12 0 2 0 0.00% 0.00% 0.00% 0 ATM VC Auto Crea 9 0 2 0 0.00% 0.00% 0.00% 0 Timers 11 0 2 0 0.00% 0.00% 0.00% 0 ATM AutoVC Perio 13 296 610532 0 0.00% 0.00% 0.00% 0 IPC Event Notifi 16 0 1 0 0.00% 0.00% 0.00% 0 IPC Zone Manager 17 3584 2980311 1 0.00% 0.00% 0.00% 0 IPC Periodic Tim 4 0 1 0 0.00% 0.00% 0.00% 0 EDDRI_MAIN 19 0 1 0 0.00% 0.00% 0.00% 0 IPC Process leve 20 0 1 0 0.00% 0.00% 0.00% 0 IPC Seat Manager 21 96 174453 0 0.00% 0.00% 0.00% 0 IPC Check Queue 14 4 50890 0 0.00% 0.00% 0.00% 0 IPC Dynamic Cach 3 0 1 0 0.00% 0.00% 0.00% 0 cpf_process_tpQ 24 756 305371 2 0.00% 0.00% 0.00% 0 IPC Keep Alive M 25 2340 610561 3 0.00% 0.00% 0.00% 0 IPC Loadometer 22 0 1 0 0.00% 0.00% 0.00% 0 IPC Seat RX Cont 15 0 1 0 0.00% 0.00% 0.00% 0 IPC Session Serv 18 1620 2980310 0 0.00% 0.00% 0.00% 0 IPC Deferred Por 29 0 1 0 0.00% 0.00% 0.00% 0 Exception contro sh run(greped): http://pastie.org/5483194 Hardware: c7200p-adventerprisek9-mz.151-4.M1.bin Cisco 7206VXR (NPE-G2) processor (revision A) with 917504K/65536K bytes of memory. Processor board ID 2xxxxxxx MPC7448 CPU at 1666Mhz, Implementation 0, Rev 2.2 6 slot VXR midplane, Version 2.1

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• How can I tell System Restore in WIndows 7 recovery console to use my recovered backup drive's restore point data?

  - by Rich Shealer

  My Windows 7 desktop PC failed to boot. It would get to a grayish screen with a mouse and would only respond to the power button. After much examination I found that the problem was not a failed drive as running CHKDSK from the Recovery Console on my main drives passed without any errors. I had been installing various Java version in the days before the failure so I decided to use a restore point to roll backwards. I have an external SATA drive controller with two 2 TB drives mirrored using the Windows mirroring function. My system has been backing up to this drive regularly. The problem is I accidently broke the mirror when testing to see if this drive system might have been causing my boot issue. Connecting it to another machine showed two dynamic drives that were invalid. In the end I reformatted one as an NTFS basic disc and used recovery software on the other to copy all of the files to the reformatted drive. I had to copy the restore points into the new drive's System Volume Information folder by granting rights to that user. I moved the drive back to the original machine and rebooted. I can see my new drive, it even uses the same drive letter as it did in normal mode. Running System Restore it lists a new Automatic Restore point created while sitting at the RC along with all of my backups. Selecting the backup I want (or any other) I get a dialog. The backup drive could not be found. System Restore is looking for restore points on your backup. Make sure the backup drive is on and connected to this computer and then click OK. What do I need to do to allow system restore to see the restore points?

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• Tunnell network requests with Windows 7

  - by mark

  I've Windows 7 64bit Pro client in a private LAN behind a Netgear wgr614v7 router. I've also a remote Debian server machine outside. I'd like to tunnel all (or specified ports/protocols) over this outside server, so when I'm on the Windows machine and I request serverfault.com it would not appear from the wgr614v7 public IP but from the server. But it's not only about HTTP traffic, it's basically about everything I'd like to: other TCP ports, even UDP, etc. It must be transparent to the application, e.g. they shouldn't be aware of this. All their requests just appear as being from the server and the tunnel between them takes care about the packets. I'm aware of e.g. Putty and forwarding individual ports or using it as a socks proxy, however not many applications to support this and the support in windows itself looks non-existent to me. I might add it should be something "reasonable" easy to set up. I've heard about PPTP but I'm unsure about it's security implications (by design). Should I go for VPN? There seem to be two common solutions for Linux (OpenSwan and StrongSwan), why would I pick the one over the other? I also fear that setting up a VPN might be quite complex, OTOH maybe it's the only sane way to do the things right? Or is OpenVPN sufficient? I'm seeking for open (source) solutions, what other options to I have or which direction should I head to?

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• Faster caching method

  - by pataroulis

  I have a service that provides HTML code which at some point it is not updated anymore. The code is always generated dynamically from a database with 10 million entries so each HTML code page rendering searches there for say 60 or 70 of those entries and then renders the page. So, for those expired pages, I want to use a caching system which will be VERY simple (like just enter a record with the rendered HTML and (if I need) remove it). I tried to do it file-based but the search for the existence of a file and then passing it through php to actually render it , seems like too much for what I want to do. I was thinking of doing it on mysql with a table with MEDIUMBLOBs (each page is around 100k). It would hold about 150000 such records (for now, at least). My question is: Would it be faster to let mysql do the lookup of the file and the passing to php or is the file-based approach faster? The lookup code for the file based version looks like this: $page = @file_get_contents(getCacheFilename($pageId)); if($page!=NULL) { echo $page; } else { renderAndCachePage($pageId); } which does one lookup whether it finds the file or not. The mysql table would just have an ID (the page id) and the blob entry. The disk of the system is a simple SATA raid 1 , the mysql daemon can grab up to 2.5GB of memory (i have a proxy running too, eating the rest of the 16GB of the machine. ) In general the disk is quite busy already. My not using PEAR cache, is because I think (please feel free to correct me on this) it adds overhead I do not need because the page rendering code is called about 2M times per day and I wouldn't want to go through the whole code each time (and yes, I have eaccelerator to cache the code too). Any pointer to what direction I should go, would be greatly welcome. Thanks!

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• Print over the internet from a remote linux session locally (on a Windows 7 machine) to the shared printers?

  - by obeliksz

  I'm trying to use a linux virtual machine as a file server for windows clients. I have successfully implemented remote file sharing (samba+ssh) with which I am able to print locally with a little program that I made for this purpose (jetforms style)... but I would like to hear about a somewhat more direct approach. How can I attach the printers to the server, so that I can for example open a file on the remote session and in the print dialogbox I would see my local printers (on the machine from which I have established a remote session)? I guess there should be some kind of putty tunneling, but dont know how. I have a windows 7 machine locally; there is a CentOS 6 VM over the internet. It has ssh, cups, and samba. I have found a question which asks the opposite: there is a windows based server to connect form linux but that windows has a domain, mine is just a simple windows workstation that is behind NAT and has a dynamic IP. That question is: Print from Linux to Windows networked printer.

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• Is there a way to measure wifi traffic on a network from a client?

  - by millimoose

  Is there some way (preferrably one that comes with an existing tool) to measure the traffic going through the whole WiFi network from a computer connected to it? (That is, not from the AP or something between the modem and AP.) My situation is this: a few months back, the internet connection at my parent's place got really sluggish and laggy. (Lag spikes that cause page loads to time out etc, connections plain getting lost and dropping packets forever.) It's impossible to get mom's husband to do anything about this because he brushes this off with something like "just tell your sister to turn off torrents". Unfortunately the WiFi router's firmware doesn't do traffic logging. I'm not going to risk bricking it to put WRT on it; nor am I keen on rewiring the network to add a proxy to analyse the traffic. (I'm one of those people that make computers break just by looking at them, except machines I own.) I'd like to be able to find out roughly how much data is going over the air here while all the LAN wires are out of the router, all the computers accused of torrenting are off, etc. The idea is to either show that: Even if everything but my macbook is turned off, something is congesting the network. The husband is a systems developer and has a whole lot of mysterious hardware that's not to be touched around, one of them might be culprit. There is barely any traffic on the network, but the internet is still sluggish. Meaning this is likely a problem the ISP should solve. (Some hardware of theirs being glitchy, someone on an aggregated line hogging it constantly...) The network is encrypted, but I can temporarily set it to open for the sake of finding this out. So, in conclusion? Can this be done? Or is there some alternative way I could try to diagnose the problem?

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