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• Windows 7 backup keeps trying to backup non-existent file and folders

  - by Ayusman

  My Windows 7 system backup keeps trying to back up 2 non existent file and one folder. I have double checked that these files do not exist. How does windows 7 try to backup that does not exist and then complain and fails the backup? Here is the messages: Backup encountered a problem while backing up file D:\Non library songs\Klub Arabia. Error:(The system cannot find the file specified. (0x80070002)) Backup encountered a problem while backing up file D:\Non library songs\Klub Arabia 2. Error:(The system cannot find the file specified. (0x80070002)) Backup encountered a problem while backing up file D:\Data\FRIENDS. Error:(The system cannot find the file specified. (0x80070002)) These file/folders may have been there at some point but have since been moved. Any idea how to solve this? Does this mean all other content has been backed up successfully? I have windows 7 professional 64bit and I am backing up my Win7 machine to an external hard drive. Ayusman

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• Google-Bot fell in love with my 404-page

  - by 32bitfloat

  Every day my access-log looks kind of this: 66.249.78.140 - - [21/Oct/2013:14:37:00 +0200] "GET /robots.txt HTTP/1.1" 200 112 "-" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)" 66.249.78.140 - - [21/Oct/2013:14:37:01 +0200] "GET /robots.txt HTTP/1.1" 200 112 "-" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)" 66.249.78.140 - - [21/Oct/2013:14:37:01 +0200] "GET /vuqffxiyupdh.html HTTP/1.1" 404 1189 "-" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)" or this 66.249.78.140 - - [20/Oct/2013:09:25:29 +0200] "GET /robots.txt HTTP/1.1" 200 112 "-" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)" 66.249.75.62 - - [20/Oct/2013:09:25:30 +0200] "GET /robots.txt HTTP/1.1" 200 112 "-" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)" 66.249.78.140 - - [20/Oct/2013:09:25:30 +0200] "GET /zjtrtxnsh.html HTTP/1.1" 404 1186 "-" "Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)" The bot calls the robots.txt twice and after that tries to access a file (zjtrtxnsh.html, vuqffxiyupdh.html, ...) which cannot exist and must return a 404 error. The same procedure every day, just the unexisting html-filename changes. The content of my robots.txt: User-agent: * Disallow: /backend Sitemap: http://mysitesname.de/sitemap.xml The sitemap.xml is readable and valid, so there seems to be no reason why the bot should want to force a 404-error. How should I interpret this behaviour? Does it point to a mistake I've done or should I ignore it?

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• DNS NAmeserver Aname and cname records

  - by David

  Hi - I am inexperienced in the configuration of DNS and have an issue with dominan hosting set up. I have two domains 'www.mydomain1.com' and 'www.mydomain2.com', with mydomain2 pointed at the same place as mydomain1. The domains were passed to me recently by the person who previoulsy controlled them. I have an account with fasthosts in the uk. When I accepted the domains I could not access the DNS settings and enquired with fasthosts as to why. The replied saying 'The delegate hosting option for both domains were enabled and this is the reason why you were unable to find the option to edit the advanced DNS records. I have now disabled the delegate hosting option so you can now edit the advanced DNS records for both domains in your account.' When i log into the fasthost control panel now i can access the DNS controls but both domains have no A Record of Cname record set up. I am concerned that fasthosts have blatted the previous Nameserver entries and set me up on theirs but not added any record. 'www.mydomain1.com' currently still works but 'www.mydomain2.com' does not find the site anymore. i am worried i will lose mydomain1 to as teh dns changes filter through the system. my webhosting is at 'xxx.xxx.xxx.xxx/mydomain1.com/' and this is where I want both domains to point. Any advice would be much appreciated. one thing which is confusing me is that because I am on a shared server I have to put 'xxx.xxx.xxx.xxx/mydomain1.com/' to get to my site rather than just 'xxx.xxx.xxx.xxx'. The form on fasthosts for the aname record only allows an IP to be entered - does it add the mydomain1.com/ onto the end itself? Thanks for any help given - I'm quite worried about this David

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• Adding a Second Wireless Router to an Existing Wired Network

  - by KVCrawford

  I apologize ahead of time, I know this has been asked before, but I'm still having problems...maybe you guys can help. I started out with the basic instructions from the highest-voted answer at http://serverfault.com/questions/41572/adding-a-second-wireless-router-to-my-network The new Wireless router in question is a Linksys Wireless-N Gigabit Router, Model # WRT310N Here are the steps I've taken in setting it up: Plug my laptop into LAN port #2 in the new router. Nothing else is connected at this point Configure the new router to be 192.168.1.200 (the original router is 192.168.1.1, and its DHCP clients are from 192.168.1.100-x.x.x.199) Set the internet connection on the new router to "DHCP Client" Turn off the DHCP server & NAT routing on the new router Plug in a LAN cable from the original router into the LAN port #1 on the new router (NOT the WAN port, nothing is plugged in there) Reset the new router Afterwards, I try to ping 192.168.1.1 from the laptop plugged into LAN port #2 on the new router, with no response. 192.168.1.200 garners no response either. Typing "ipconfig" tells me: Autoconfiguration IP Address: 169.254.198.113 Subnet Mask: 255.255.0.0 Default Gateway: 169.254.198.113 What's going wrong? I appreciate any help!

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• Haproxy not properly passing on X-Forwarded-For header

  - by JesseP

  I have backend web servers that receive requests by way of haproxy-nginx-fastcgi. The web app used to see multiple ip's coming through in the X-Forwarded-For header, chained together with commas (most original IP on the left). At some point in the recent past (just noticed, so not sure what caused it) something changed, and now I'm only seeing a single IP passed in the header to my web application. I've tried with haproxy 1.4.21 and 1.4.22 (recent upgrade) with the same behavior. Haproxy has the forwardfor header set: option forwardfor Nginx fastcgi_params config defines this header to be passed to the app: fastcgi_param HTTP_X_FORWARDED_FOR $http_x_forwarded_for; Anyone have any ideas on what might be going wrong here? EDIT: I just started logging the $http_x_forwarded_for variable in nginx logs, and nginx is only ever seeing a single IP, which shouldn't ever be the case, as we should always see our haproxy ip added in there, right? So, issue must either be in nginx handling of the variable coming in, or haproxy not building it properly. I'll keep digging... EDIT #2: I enabled request and response header logging in HAProxy, and it is not spitting anything out for X-Forwarded-For, which seems very odd: Oct 10 10:49:01 newark-lb1 haproxy[19989]: 66.87.95.74:47497 [10/Oct/2012:10:49:01.467] http service/newark2 0/0/0/16/40 301 574 - - ---- 4/4/3/0/0 0/0 {} {} "GET /2zi HTTP/1.1" O Here are the options i set for this in my frontend: mode http option httplog capture request header X-Forwarded-For len 25 capture response header X-Forwarded-For len 25 option httpclose option forwardfor EDIT #3: It really seems like haproxy is munging the header and just passing on a single one to the backend. This is fairly impacting to our production service, so if anyone has an ideas it would be greatly appreciated. I'm stumped... :(

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• Windows XP corrupts registry every several hours

  - by Ilya Kazakevich

  There is a Dell XPS 400 with Windows Media Center installer. It is installed on RAID (Intel Matrix Storage) which is built-in chipset south bridge. Raid has two 150 Gb WDC drivers connected as mirror. All drivers and updates are installed( sp3 and so on). A week ago PC changed its video mode to 256 colors (like VESA mode) and after several moments I got BSOD: c000021a: 0xc0000005 Doctor watson did not create dump although it is installed as default debugger. After reboot it said that config file is missing or corrupted. So, I boot to recovery console and found that registry file (config) is so small. I've replaced it with one from recovery point and windows booted sucessfully. But after about 3 hrs -- it has crashed again in the same wat! I look in event viewer: is said that Explorer.exe failed to open \global??\DLIAFS. I look in winobj, and found that it is a device. I made "deny from everyone" for this device ACL, and after several hours my windows crashed. I restored registry, boot again and there was no error about DLIAFS. I did full chkdsk and it did not found anything bad. But I found event about error paging to \Harddrive1\D. I do not have pagefile there, but I thought I should check my disk again. Unfortunatelly I cannt use smart tools for RAID, but I downloaded latest software from Intel (it can do the same things like RAID bios can but from windows). It verified my disks, found some errors, fix them, than I rebooted. And it crashed again. I am lost. What (except kernel debugging) could be done here? Thanks

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• Windows XP corrupts registry every several hours

  - by Ilya Kazakevich

  There is a Dell XPS 400 with Windows Media Center installer. It is installed on RAID (Intel Matrix Storage) which is built-in chipset south bridge. Raid has two 150 Gb WDC drivers connected as mirror. All drivers and updates are installed( sp3 and so on). A week ago PC changed its video mode to 256 colors (like VESA mode) and after several moments I got BSOD: c000021a: 0xc0000005 Doctor watson did not create dump although it is installed as default debugger. After reboot it said that config file is missing or corrupted. So, I boot to recovery console and found that registry file (config) is so small. I've replaced it with one from recovery point and windows booted sucessfully. But after about 3 hrs -- it has crashed again in the same wat! I look in event viewer: is said that Explorer.exe failed to open \global??\DLIAFS. I look in winobj, and found that it is a device. I made "deny from everyone" for this device ACL, and after several hours my windows crashed. I restored registry, boot again and there was no error about DLIAFS. I did full chkdsk and it did not found anything bad. But I found event about error paging to \Harddrive1\D. I do not have pagefile there, but I thought I should check my disk again. Unfortunatelly I cannt use smart tools for RAID, but I downloaded latest software from Intel (it can do the same things like RAID bios can but from windows). It verified my disks, found some errors, fix them, than I rebooted. And it crashed again. I am lost. What (except kernel debugging) could be done here? Thanks

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• How to manage mounted partitions (fstab + mount points) from puppet

  - by Cristian Ciupitu

  I want to manage the mounted partitions from puppet which includes both modifying /etc/fstab and creating the directories used as mount points. The mount resource type updates fstab just fine, but using file for creating the mount points is bit tricky. For example, by default the owner of the directory is root and if the root (/) of the mounted partition has another owner, puppet will try to change it and I don't want this. I know that I can set the owner of that directory, but why should I care what's on the mounted partition? All I want to do is mount it. Is there a way to make puppet not to care about the permissions of the directory used as the mount point? This is what I'm using right now: define extra_mount_point( $device, $location = "/mnt", $fstype = "xfs", $owner = "root", $group = "root", $mode = 0755, $seltype = "public_content_t" $options = "ro,relatime,nosuid,nodev,noexec", ) { file { "${location}/${name}": ensure => directory, owner => "${owner}", group => "${group}", mode => $mode, seltype => "${seltype}", } mount { "${location}/${name}": atboot => true, ensure => mounted, device => "${device}", fstype => "${fstype}", options => "${options}", dump => 0, pass => 2, require => File["${location}/${name}"], } } extra_mount_point { "sda3": device => "/dev/sda3", fstype => "xfs", owner => "ciupicri", group => "ciupicri", $options = "relatime,nosuid,nodev,noexec", } In case it matters, I'm using puppet-0.25.4-1.fc13.noarch.rpm and puppet-server-0.25.4-1.fc13.noarch.rpm.

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• Redirect specific domains with DNS

  - by user66377

  Currently we filter internet content using OpenDNS, our internal Windows DC/DNS servers point to the router's DNS, which then points to the OpenDNS servers. This works well to block all computer's on the network equally. New issue. We now need to separate what computers can go to what sites. So facebook is blocked for everyone right now, but I need to open it up to the 3 community computers now. The 3 community computers will be on an untrusted network seperate from the company computers so they can have their own DNS server, from their own router. The issue is though they still must connect to the internet using the same IP address. So OpenDNS sees the same IP and blocks them the same way. We are looking into getting a second IP, but it's not likely an option without going up to the next major level with our ISP which we don't want to do. My thought is this. Can I setup a DNS server on the untrusted network, and then depending on the request that comes in, have it send it to either OpenDNS or our ISP's DNS? Example www.facebook.com and www.youtube.com are both on the OpenDNS blacklist. So if they go to www.youtube.com, the local DNS server goes to the ISP's DNS to get the IP and thus the client gets the right IP and can go to the site. This would be manually entered for each allowed site thus creating a white list. Then if they go to www.facebook.com, since the local DNS server does not find an entry, it sends the request to OpenDNS, which then sees the site is on the blacklist, and thus sends the it's blocked webpage. The local DNS server can be either Bind on Linux or MS DNS on Window 2008. If this can be done, can you give some direction as well as I've never setup a DNS such as this before. Thanks

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• Trouble with IIS SMTP relaying to Gmail

  - by saille

  I appreciate that similar questions have been asked about how to setup SMTP relaying with IIS's virtual SMTP server. However I'm still completely stumped on this problem. Here's the setup: IIS 6.0 SMTP server running on Win2k3 box with a NAT'ed IP. Company uses Gmail for all email services. An app on the box needs to send email, so normally we'd just set the app up to talk to smtp.gmail.com directly, but this app doesn't support TLS. Easy, we just setup a local SMTP relay right? So I thought. What we have done so far: Setup IIS SMTP server to relay to smtp.gmail.com, as per these excellent instructions: http://fmuntean.wordpress.com/2008/10/26/how-to-configure-iis-smtp-server-to-forward-emails-using-a-gmail-account/ The local SMTP relay allows anonymous access. Both the local IP and the loopback IP have been explicitly allowed in the Connection and Relay dialogs. Tried sending email from 2 different apps via the local SMTP server, but failed (the emails end up in the Queue folder, but never get sent). The IIS logs show the conversation with the local app, but zero conversation happening with smtp.gmail.com. The port used by gmail is open outbound, and indeed the apps we have that support TLS can send email directly via smtp.gmail.com, so there is no problem with the network. At this point I changed the smtp settings in IIS SMTP server to use a different external SMTP server and hey-presto, the local apps can send email via local IIS SMTP relay. So smtp.gmail.com fails to work with our IIS SMTP relay, but another 3rd party SMTP service works fine. We need to use smtp.gmail.com, so how to troubleshoot this one?

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• Apache: rewrite port 80 and 443 - multiple SSL vhosts setup

  - by Benjamin Jung

  SETUP: multiple SSL domains are configured on a single IP, by using vhosts with different port numbers (on which Apache listens) Apache 2.2.8 on Windows 2003 (no comments on this pls) too many Windows XP users so SNI isn't an option yet There may be reasons why it's wrong to use this approach, but it works for now. vhosts setup: # secure domain 1 <VirtualHost IP:443> SSL stuff specifying certificate etc. ServerName domain1.org </VirtualHost> # secure domain 2 <VirtualHost IP:81> SSL stuff for domain2.org ServerName domain2.org </VirtualHost> GOAL: Some folders inside the domain2.org docroot need to be secure. I used a .htaccess file to rewrite the URL to https on port 81: RewriteEngine On RewriteCond %{SERVER_PORT} !^81$ RewriteRule (.*) https://%{HTTP_HOST}:81%{REQUEST_URI} [R] Suppose I put the .htaccess in the folder 'secfolder'. When accessing http://domain2.org/secfolder this gets succesfully rewritten to https://domain2.org:81/secfolder. ISSUE: When accessing https://domain2.org/secfolder (without port 81), the certificate from the first vhost (domain1.org) is used and the browser complains that the site is insecure because the certificate is not valid for domain2.org. I thought that RewriteCond %{SERVER_PORT} !^81$ would also rewrite https://domain2.org to https://domain2.org:81, but it doesn't. It seems that the .htaccess file is not being used at all in this case. At this point I am not sure how to apply a RewriteRule to https://domain2.org. I tried creating an additional vhost for domain2 on port 443 before the one for domain1.org, but Apache seems to choke on that. I hope someone of you has an idea how to approach this. TIA.

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• Throughput; capacity planning help for C10K like design

  - by z8000

  I am designing a network service in which clients connect and stay connected -- the model is not far off from IRC less the s2s connections. I could use some help understanding how to do capacity planning, in particular with the system resource costs associated with handling messages from/to clients. There's an article that tried to get 1 million clients connected to the same server [1]. Of course, most of these clients were completely idle in the test. If the clients sent a message every 5 seconds or so the system would surely be brought to its knees. But... How do you do less hand-waving and you know, measure such a breaking point? We're talking about messages being sent by a client over a TCP socket, into the kernel, and read by an application. The data is shuffled around in memory from one buffer to another. Do I need to consider memory throughput ("5 GT/s" [2], etc.)? I'm pretty sure I have the ability to measure the basic memory requirements due to TCP/IP buffers, expected bandwidth, and CPU resources required to process messages. I'm a little dim on what I'm calling "thoughput". Help! Also, does anyone really do this? Or, do most people sort of hand-wave and see what the real world offers, and then react appropriately? [1] http://www.metabrew.com/article/a-million-user-comet-application-with-mochiweb-part-3/ [2] http://en.wikipedia.org/wiki/GT/s

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• MySQL Workbench is not finding MySQL service? [closed]

  - by PhADDinTraining

  I set up a local MySQL server, currently with no databases. I'm trying to create a new server instance profile in MySQL Workbench to manage the server, and during the Create New Server Instance Profile wizard, it gets to the Windows Management section and tells me that No MySQL service found. I went into Task Manager and found the process mysqld.exe to be running, under the user name of NETWORK SERVICE. Then I went into the Services tab and found that MySQLServerName (I custom named the Windows service) is also there, and status is running. I ran cports and looked at what ports mysqld.exe is using, and ran a telnet command on that port. It's reporting that the port is being listened in on. I then ran the MySQL Command Line Client to be sure, and after \r it gives me a proper connection ID and a list of databases (NONE at this point). But with all this, I can't make the wizard find a running service. I've Googled this and found no answers, so please, if someone would help shed some light on this issue that'd be great!

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• Backup software for incremental swapped-out drives?

  - by user13743

  We're using Acronis Home 11 to backup our main Windows machine at the office. We have a set of portable hard drives that we swap out each week, for redundancy. We have incremental sets ( a new diff of the entire series each night) building on each drive. However, from time to time, Acronis gets confused and sometimes makes a new full backup. This eats up a lot of drive on the disks. Also, I have to trick the Acronis script each time I swap out a drive and point it to the new incremental backup set. Finally, if a drive gets full, there's no way to partition the backup set on a drive. I found this out the hard way, and now one drive is full with one backup set. So now on the other drive, I have three folders of backup sets. When one starts to get full, I delete the oldest one and start a new set. That way one single drive never gets filled up with one single backup set. I'm looking for a backup software that can backup Windows in incremental sets, and doesn't get tripped up with swapped out drives. Is there a better solution?

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• What's wrong with my VirtualHost?

  - by johnlai2004

  I have the following VirtualHost // filename: /etc/apache2/sites-available/ccbbbcc <VirtualHost 1.1.1.1:80> ServerAdmin [email protected] ServerName ccbbbcc.com ServerAlias www.ccbbbcc.com DocumentRoot /srv/www/ccbbbcc/production/public_html/ ErrorLog /srv/www/ccbbbcc/production/logs/error.log CustomLog /srv/www/ccbbbcc/production/logs/access.log combined </VirtualHost> And then I also have //filename: /etc/apache2/sites-available/default <VirtualHost 1.1.1.1:80> ServerAdmin webmaster@localhost DocumentRoot /var/www/ <Directory /> Options FollowSymLinks AllowOverride None </Directory> blah blah blah How come when I type into my browser http://1.1.1.1, it takes me to http://ccbbbcc.com ? Even when I point new urls to the IP 1.1.1.1, webpages serve from http://ccbbbcc.com. Why is the ccbbbcc.com overriding all my other virtual hosts? Why am I unable to serve pages from /var/www directory? I've made sure to use a2ensite and to restart apache. This is what my /etc/apache2/ports.conf looks like NameVirtualHost 1.1.1.1:80 Listen 80 Listen 443

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• Windows server 2008, Dns. I'm confused

  - by Dejan.S

  Hi. I recently setup a window server 2008 server at work. Keep in mind I have never worked with it before:). Background story is I try to host a couple of sites on the server through iis7, I got domains (currently hosted at other hosters for the moment). I want to point the domain NS to my server on all of them. I have read how to setup a DNS on the server, so far so good. now my dns is companyname.com in the server manager I got DNS / companyname.com in there I got ns.comanyname.com, in there I got Host(A) with the server ip now this is where I get confused about how things work with DNS, NS & Host(A). I dont know how to assign(so to speak) the Host(A) to one of my webapps hosted on the iis7, because that is the pointer right?. To leave an example to work with lets say, Hosted.com is hosted on my iis7, on port 81. You don't understand how great full I would be if somebody could explain this confusion. EDIT: Do I need to create a DNS for every site hosted on my server? Or just make a A Host/Record? Thanks guys

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• Issues with creating a snapshot

  - by Andy Welcomer

  Hello everyone, We have a strange issue when attempting to create a snapshot in one of our regional environments. We have 4 VMs, 2 of them have mulitple VMDKs spread onto different datastores. When a snapshot is created, all the VMDKs (except for the first), seem to vanish. If you look at the properties of the VM, the path to the VMDKS points to the datastore where the primary VMDK is, and the file name is some random garbage. If the snapshot is deleted everything returns to normal. Has anyone ever seen this? I'm using ESX3.5 Thank you in advance. Andy ==============UPDATE============== Here is some more information. I just created a test machine with 7 VMDKs. 1 for the OS. and 6 others for data. All of the VMDKs are in seperate datastores. I take a snapshot of the machine, all of the 6 VMDKs loose their reference to the actual VMDK files. The all point to 64KB VMDK files in the datastore where the OS VMDK is located. These 64KB vmdks didn't exist until the snapshot was taken. When the snapshot is deleted, everything goes back to normal.

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• Misconfigured external monitor on Mac OS X Snow Leopard 10.6.3

  - by Mike

  I have an external monitor (specifically, an HDTV) hooked up to my 2.53GHz 13" macbook pro. This display works fine and I use it with my mac in clamshell mode (eg. with an external keyboard/mouse and the laptop closed and the built-in mac screen turned off) My Mac has multiple users on it. For User A I can use the mac with the external monitor in both clamshell and dual-monitor setups. For User B, I can use the monitor in a dual-monitor setup, but whenever I switch to clamshell mode the Mac switches to an incorrect output resolution or frequency setting that my HDTV doesn't recognize, resulting in a blank screen and a message about Unsupported Resolution. Chances are I did this to myself by misconfiguring my display settings at some point in the past, but I have no idea how to undo it. I (obviously) can't seen the display to change the settings when it's borked. I can see the display settings if I switch to Dual-monitor mode, but those settings only affect the dual monitor setup; no matter how I change the settings in dual-monitor mode, the clamshell mode setup remains borked. How can I dig myself out of this hole?

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• Ubuntu: unattended-upgrades from a local package archive

  - by Novelocrat

  I have a local apt archive with a bunch of packages I built in it. The Packages and Release file are generated by apt-ftparchive. The Release file looks like Date: Thu, 06 May 2010 23:04:33 UTC Label: PPL Origin: PPL Suite: ppl MD5Sum: ebec3527ebc8351468b2ef8796c19855 37325 Packages d41d8cd98f00b204e9800998ecf8427e 0 Release SHA1: a0593b663d77fde88ee35b56ae1f3c17801cfe99 37325 Packages da39a3ee5e6b4b0d3255bfef95601890afd80709 0 Release SHA256: dd73a02846aee111cac58a869c6bf650886632ba82c2172ffddd81aa4429981c 37325 Packages e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 0 Release I'm using unattended-upgrades to keep the machines in the lab up to date on security and bug fixes, but I'm finding that it doesn't pull from my local archive. The configuration file for it looks like // Automaticall upgrade packages from these (origin, archive) pairs Unattended-Upgrade::Allowed-Origins { "Ubuntu hardy-security"; "Ubuntu hardy-updates"; "PPL ppl"; }; // List of packages to not update Unattended-Upgrade::Package-Blacklist { // "vim"; // "libc6"; // "libc6-dev"; // "libc6-i686"; }; // Send email to this address for problems or packages upgrades // If empty or unset then no email is sent, make sure that you // have a working mail setup on your system. The package 'mailx' // must be installed or anything that provides /usr/bin/mail. //Unattended-Upgrade::Mail "root@localhost"; Yet, when I run sudo unattended-upgrade on one of these machines, newer package versions don't get installed. Can anyone point out what I'm getting wrong?

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• 3 Servers, is this is a cluster?

  - by Andy Barlow

  Hello, At the moment I have one Ubuntu server, 9.10, running with a simple Samba share, a mail server, DNS server and DHCP server. Mostly its just there for file sharing and email server. I also have 2 other servers that are exactly the same hardware and spec as the first, which have an rsync set up to retrieve the shared folders and backs them up. However, if the first server goes down, all of our shares disappear along with our mail and the system must be rebuilt. Also I tend to find if people are downloading a large amount from the file server, no-one can access there emails - especially in the morning when everyone is signing in at once. Would it be more beneficial for me to have all 3 servers, all running the same services, doing the same thing with some sort of cluster with load balancing? I'm not really sure where to begin looking, or how to go about such a setup where 3 servers are all identical, but perhaps one acts as the main load balancer?? If someone can point me in the right direction, or if this simply sounds like one of those Enterprise Cloud's that is now a default setup in Ubuntu Server 9.10+, then I'll go down that route. Cheers in advance. Andy

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• debian VM refusing all traffic apart from http

  - by james lewis

  I've got a VM with a fresh install of Debian (wheezy) and I've installed node and mongo on it. The VM is using a bridged network connection so I was expecting to be able to point my host machines browser at the ip address of the Debian VM (port 1337 for my node example or port 28017 for my mongo status page) and see one of the two services (node or mongo). My requests are refused though. As far as I can tell Debian allows all traffic by default and you have to manually configure iptables to drop traffic. I've checked iptables and it says it's setup to allow anything through. It looks like this: root@devbox:/home/jlewis# iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination As a test I setup nginx and I was able to get to the nginx landing page from my host no problems so obviously http traffic is allowed. I then set nginx up to forward all traffic upstream to mongo - no problems there, I was able to see the status page. I then did the same for my example node server and again, no problems. So http traffic is fine, but all other traffic is blocked. Anyone know why debian might be refusing all other traffic other than iptables being setup to drop it? EDIT - output from netstat -nltp: Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 127.0.0.1:28017 0.0.0.0:* LISTEN 1762/mongod tcp 0 0 0.0.0.0:51028 0.0.0.0:* LISTEN 1541/rpc.statd tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 2462/sshd tcp 0 0 127.0.0.1:1337 0.0.0.0:* LISTEN 2794/node tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 2274/exim4 tcp 0 0 127.0.0.1:27017 0.0.0.0:* LISTEN 1762/mongod tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1510/rpcbind tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 2189/nginx tcp6 0 0 :::22 :::* LISTEN 2462/sshd tcp6 0 0 :::45335 :::* LISTEN 1541/rpc.statd tcp6 0 0 ::1:25 :::* LISTEN 2274/exim4 tcp6 0 0 :::111 :::* LISTEN 1510/rpcbind

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• PC won't boot after hanging during Windows 8 automatic repair [closed]

  - by Mun

  I've got a custom built PC using an ASUS P5E motherboard and Intel Q6600 CPU. I plugged in my mp3 player to the USB port yesteday, and when I came back to the machine after about an hour or so, the Windows 8 automatic repair message was on the screen. It seemed to stick there for an hour, after which I decided to just hit reset and try and figure out what was going on. However, the machine rebooted to a black screen before even getting to the BIOS, with the monitor lights just blinking indicating there was no signal. Tried powering down completely, waiting a few minutes and then powering back up again with no difference; black screen with monitor lights blinking. Tried leaving it on for a while and then pinging from another machine or accessing it via something like LogMeIn, but everything showed the machine as being offline. There were also no error beeps or anything like that. Also tried unplugging all of the memory and rebooting and that also caused no error beeps. Removed one of the display cards and left the other one in there, and still only a black screen. I'm inclined to think that the motherboard or CPU is fried, but there is no indication of damage on any components and the CPU fan seems to be working fine as it always has, so overheating seems unlikely. It's also plugged into a surge protector. The motherboard also has a green light which still lights up. As everything was still working fine before hitting the reset button during Windows 8 automatic repair screen, at which point everything stopped working, it seems unlikely that this problem is down to component failure. Has anyone else experienced anything like this or have any ideas on what could be causing this behavior?

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• Windows 7 Folder Redirection (GPO)

  - by Kev

  I have been fighting this issue for a day or two now, so I am looking for some insight. I am taking over admin duties in a domain of 800 users, and the previous admins really did not employ much of any GPO settings for the clients of the Domain. In each site, there is a location on the file server where "Home" folders were manually created. EX: \server\home\enduser Whenever a user got a machine, the admin would manually right-click on the "My Documents" folder and manually enter the path to the home folder. We are planning to start putting Windows 7 machines on the Network, and I am wanting to automate as much as I can, everything that was not done in the past. Since everyone has exising "Home" folders I have been fighting and trying to get Folder Redirection to work with a new Windows 7 machine (In a Test OU). I am getting all kinds of errors and I can't get the Windows 7 "Documents" folder to redirect to the users EXISTING home folders. As I stated earlier, all of the Home folders were (and still are) manually created on the File Server and are set with the following Security permissions - Domain Admins - Full Control euser (end user) - Modify (Everything but Full) Can someone point me in the right direction on the proper setting to put in the Folder Redirection GPO to get this to work with the Existing Home folders.

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• CentOS OpenVZ fail to boot after kernel update

  - by SkechBoy

  After upgrading to latest OpenVZ kernel CentOS server won't boot. When i try go boot the latest kernel server is stuck at this point: (note that images are taken from virtual kvm) http://i.stack.imgur.com/4lusz.jpg Then i try to start the server on some old kernels and than i get this error message: kernel panic - not syncing - attempted to kill init better shown on this image: http://i.stack.imgur.com/2SReF.jpg Here is some useful information fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 2995.7 GB, 2995739688960 bytes 255 heads, 63 sectors/track, 364211 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0004c4e4 Device Boot Start End Blocks Id System /dev/sda1 1 523 4199044+ 82 Linux swap / Solaris /dev/sda2 524 785 2104515 83 Linux /dev/sda3 786 261869 2097157230 83 Linux /dev/sda4 261870 364211 822062115 83 Linux /etc/fstab proc /proc proc defaults 0 0 none /dev/pts devpts gid=5,mode=620 0 0 /dev/sda1 none swap sw 0 0 /dev/sda2 /boot ext3 defaults 0 0 /dev/sda3 / ext3 defaults 0 0 /dev/sda4 /home ext3 defaults 0 0 and grub config file: title OpenVZ (2.6.18-274.18.1.el5.028stab098.1) root (hd0,1) kernel /vmlinuz-2.6.18-274.18.1.el5.028stab098.1 ro root=/dev/sda3 vga=0x317 selinux=0 initrd /initrd-2.6.18-274.18.1.el5.028stab098.1.img title OpenVZ (2.6.18-274.7.1.el5.028stab095.1) root (hd0,1) kernel /vmlinuz-2.6.18-274.7.1.el5.028stab095.1 ro root=/dev/sda3 vga=0x317 selinux=0 initrd /initrd-2.6.18-274.7.1.el5.028stab095.1.img title OpenVZ (2.6.18-194.8.1.el5.028stab070.4) root (hd0,1) kernel /vmlinuz-2.6.18-194.8.1.el5.028stab070.4 ro root=/dev/sda3 vga=0x317 initrd /initrd-2.6.18-194.8.1.el5.028stab070.4.img Any help is greatly appreciated Thanks.

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• Mac Grey/White Screen of Death

  - by cust0s

  The other night I updated my iTunes to the latest version (through Software Update) when I came to turn on my computer I was greeted with the dreaded white screen of death. I use an early 2008 iMac 24". I've tried the basic things, unplugging/turning off accessories, trying to boot from the install disk, reseting pram, etc, etc. Still no luck and no change what-so-ever. All I've been able to ascertain that my keyboard still works (by ejecting). I should point out that I did recently replace my Hard drive with a Western Digital Black 500GB (though the computer is well out of warrenty) and I'm a little concerned that the problem could be the screen. Update (18/05/10): I've been told that I could be getting the White/Grey screen of death because the optical flex cable is damaged (aparently this is common). Apparently the Optical Drive is part of the POST sequence, and an inability to read the drive can result in failure for the system to move on to other bootable volumes. More info here. I will disable the optical drive and see if that works.

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