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• Linux/Unix MTA with the smartest queue?

  - by threecheeseopera

  I am looking for an MTA that will allow me (a script, really) to proactively manage it's send queue in response to status codes returned by the remote servers I am delivering to. Basically, for each mail sent I would like to be able to react to the SMTP reply code returned by the remote server, ex. '250 OK', or to any error conditions like connection timeouts. Additionally, I would like to be able to manage the send queue moving forward based on this information, e.g. 'example.com has timed out the last 5 connection attempts, so no longer queue mail for recipients @example.com'. I am currently using postfix and perl to parse it's logs for this information, but I am playing a game of catchup that is prone to errors (out-of-order log entries etc.) and it's starting to get messy (some real ugly regexes ;). I really don't want to reinvent the wheel and use some language's smtp library; i would prefer to use a proven/fast/reliable MTA. I am however open to suggestions if what I need just isn't possible. Thanks for your help!

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• How to remove all Couchdb versions in Ubuntu 10.04 (server)? ( after multiple installs )

  - by DjangoRocks

  Hi all, I have done multiple installs of CouchDB using sudo aptitude install couchdb sudo ap-get install couchdb and more recently based on the instructions found at L http://wiki.apache.org/couchdb/Installing_on_Ubuntu May I know how do I uninstall or remove all the above installations? Best Regards. +++++++++++++++++++UPDATE++++++++++++++++++++++++ I've tried running the following commands: apt-get remove couchdb apt-get purge couchdb but received the following errors: (Reading database ... 39814 files and directories currently installed.) Removing couchdb ... invoke-rc.d: initscript couchdb, action "stop" failed. dpkg: error processing couchdb (--remove): subprocess installed pre-removal script returned error exit status 1 invoke-rc.d: initscript couchdb, action "start" failed. dpkg: error while cleaning up: subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: couchdb E: Sub-process /usr/bin/dpkg returned an error code (1) May I know how do i fix this? ON issuing the command : dpkg -l | grep couchdb I received the following response: rF couchdb 0.10.0-1ubuntu2 RESTful document oriented database, system D iF couchdb-bin 0.10.0-1ubuntu2 RESTful document oriented database, programs How do i uninstall CouchDB ? I think there's some file corruption?

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• Linux machine can't find its tape drive

  - by Kyle Hodgson

  I have an older HP NetServer LPr with what is apparently a Symbios SCSI card connecting to a Quantum SuperLoader 3 that is DLT based. From time to time, we seem to lose the connection to the autoloader. It's usually due to flaky power, but not totally sure why; sometimes when this happens the Autoloader's LED's are orange and it needs to be power cycled. The annoying workaround currently is to reboot the machine. As it is our production VPN and DNS server in addition to being our backup server, this is less than optimal. In Debian (Sarge) is there not some command one can type to get the card to notice that it has the autoloader connected again? dcr1:/proc# grep -i symbios /proc/pci SCSI storage controller: LSI Logic / Symbios Logic 53c895 (rev 1). dcr1:/proc# uname -a Linux dcr1 2.4.27-3-686 #1 Tue Dec 5 21:03:54 UTC 2006 i686 GNU/Linux dcr1:/proc# mt status mt: /dev/tape: No such device dcr1:/proc# ls -l /dev/tape lrwxrwxrwx 1 root root 8 2007-02-07 16:01 /dev/tape -> /dev/st0 dcr1:/proc# That mt status command will show the actual st0 status when things are working correctly. The No such device message is usually the second clue that we need to reboot - the first clue is usually that the backups didn't run.

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• Ubuntu 10.04 Server on Hyper-V Server R2 has sluggish install and command line

  - by Paul Hobart

  I've installed Ubuntu Server 10.04 (64 bit) on a Hyper-V Server R2. I've encountered two issues that I think are related: Very slow install Very slow command prompt The text-mode installer goes through a series of text-based prompt windows. It takes 7-10 seconds for each of these windows to draw on the screen. The end result is that every time I answer a prompt and hit enter I wait for 15 seconds while the screen redraws line by line. I can literally see each line of text being drawn (like the old 300 baud modems days). Once done installing, scrolling on the command line is super slow. For instance, if a simple command, like "ls", causes the screen to scroll, it will scroll very slowly. This happens on a fresh install. The server functions as a LAMP server and an OpenSSH server, but that's it (I don't even have any Virtual Hosts set up yet). AND this only happens on the Virtual Machine console. I access the console through Hyper-V Manager and don't have this problem on any of my other Virtual Machines. Also, this problem does NOT happen when accessing a shell through OpenSSH. How can I improve this performance issue?

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• Excel data into PowerPoint slides

  - by nqw1

  I have already found some helpful sites but I'm still unable to do what I want. My Excel file contains few columns and multiple rows. All the data from one row would be in one slide but data from different cells in that one row should go to a specific elements in PP slide. At first, is it possible to export data from an Excel cell into a specific text box in PP? For example, I would like to have all data from the first column of each row go to a Text box 1. Let's say I have 100 rows so I would have 100 slides and each slide would have Text bow 1 with correct data. Text box of slide 66 would have data from the first column of row 66. Then all data from the second column of each row would go to a text bow 2 and so on. I tried to do some macros with bad success. I also tried to use Word outlines and export them into PP (New slide - Slides from Outline) but there seems to be a bug since I got 250 pages of gibberish. I had only two paragraphs and both had one word. First paragraph used Heading 1 style and second paragraph used Normal style. Sites what I have found, use VB and/or some other programming language to create slides from Excel sheets. I have tried to add those VB codes into my macros but none of them hasn't worked so far. Probably I just don't know how to use them correctly :) Here's some helpful sites: VBA: Create PowerPoint Slide for Each Row in Excel Workbook Creating a Presentation Report Based on Data Question in Stackoverflow I use Office 2011 on Mac. Any help would be appreciated!

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• AMIs in Amazon EC2

  - by Jack of Trades

  I really like the Amazon EC2 environment, and thought I'll spend a bit of time playing around with various types of public (Windows!) AMI servers. But testing has been a bit, well, questionable. Some of my findings: It's very difficult to know what exactly a specific public EC2 image is supposed to be doing. Many images come with little to no information. I can't seem to find the passwords to log onto various windows images. Why are they public if they can't be used!? Lots of images are based on S3, and not EBS backed. This is very annoying, as S3 takes a lot longer to do pretty much anything (stop, image etc.) I am only testing images here, so of-course I don't question the value of S3 for other attributes. The description of what an image does is almost useless and many times confusing. Have others come across these EC2 issues. Again, my interest was to just play around with public images for testing/experimentation/etc, and therefore these issues may not be too relevant for more normal EC2 deployment uses.

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• When to use Truecrypt, and when not to?

  - by tm77

  I have about 30 (this number will most likely grow over the next few years to 50 or more) unencrypted laptops that I have been tasked to encrypt (entire drive). These machines will be used off site regularly by my users. These machines are running Windows 7 and XP (about 50/50), but more Windows 7 every month. I have experience with Truecrypt, and have had no issues. It appears to be THE solution for a free solution. My concern with Truecrypt is that my users will have 2 passswords needed to login to their machines. Also, I need to choose to either have 1 password for my organization, or carefully document each machine's password (management nightmare). In my mind, choosing between a managed and a free encryption solution is primarily based on the NUMBER of machines that will be encrypted and supported. Two questions: From a management standpoint, what is the tipping point of users where a managed solution would pay for itself over Truecrypt? What are some good third party solutions? (I will consider Bitlocker, but the price to upgrade Windows 7 licenses is a turn-off) I would love to hear from some admins with experience in supporting encrypted machines in a corporate environment. Many thanks in advance!

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• How do I get a Mac to request a new IP address from another DHCP server running in parallel while Ne

  - by huyqt

  Hello, I have an interesting situation. I'm trying to us a Linux based machine to allow Mac's to Netboot (similiar to PXE boot) by running a DHCP service in parallel with the "global" DHCP server. The local DHCP server hands out IPs in a private subnet, e.g., 10.168.0.10-10.168.254-254, while the "global" DHCP server hands out IPs from the IP range 10.0.0.1 - 10.0.1.254. The local DHCP range is only supposed to be used in Preboot Execution Environment and Netboot. The local DHCP server is something I have control over, but I do not have access to the global DHCP server. I have a filter to only allow members with the vendor strings "AAPLBSDPC/i386" and "PXEClient". PXE works fine, but Netboot has a quirk. The Apple systems that haven't been connected to the network yet can Netboot fine. But once it grabs a "real" IP address from the global DHCP server, it will "save" it and request it the next time we want it to netboot (which the local dhcp server won't give it). This is what I want: Mar 30 10:52:28 dev01 dhcpd: DHCPDISCOVER from 34:15:xx:xx:xx:xx via eth1 Mar 30 10:52:29 dev01 dhcpd: DHCPOFFER on 10.168.222.46 to 34:15:xx:xx:xx:xx via eth1 Mar 30 10:52:31 dev01 dhcpd: DHCPREQUEST for 10.168.222.46 (10.168.0.1) from 34:15:xx:xx:xx:xx via eth1 Mar 30 10:52:31 dev01 dhcpd: DHCPACK on 10.168.222.46 to 34:15:xx:xx:xx:xx via eth1 Mar 30 10:52:32 dev01 in.tftpd[5890]: tftp: client does not accept options Mar 30 10:52:53 dev01 in.tftpd[5891]: tftp: client does not accept options Mar 30 10:52:53 dev01 in.tftpd[5893]: tftp: client does not accept options Mar 30 10:52:54 dev01 in.tftpd[5895]: tftp: client does not accept options This is what I get when it already has a "stored" IP: Mar 30 10:51:29 dev01 dhcpd: DHCPDISCOVER from 00:25:xx:xx:xx:xx via eth1 Mar 30 10:51:30 dev01 dhcpd: DHCPOFFER on 10.168.222.45 to 00:25:xx:xx:xx:xx via eth1 Mar 30 10:51:31 dev01 dhcpd: DHCPREQUEST for 10.0.0.61 (10.0.0.1) from 00:25:xx:xx:xx:xx via eth1: ignored (not authoritative). Do you have any suggestions? It would be much appreciated.

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• Is 30 calls / second a lot for one IIS server?

  - by Lieven Cardoen

  We have a RIA application that 300 clients concurrently use in an intranet environment. Together they make 30 calls / second to IIS (asp.net) (actually it's 60 but calls are loadbalanced over two IIS servers). Half of the calls is getting an asset (Caching Profile is used so most of the time cache is hit), the other half is saving data to a sql server. Retrieving an asset is done with a aspx page. Saving the data happens via WebORB, asp.net and Sql Server. So some processing is needed by WebORB (amf decoding, GZIP, ...). We also use Spring.NET, and some of the container objects have a request scope (not a lot). IIS servers -- Virtual machines, 4 CPU, 2 gb RAM. They are based on Windows 2008 x64 SP2 Enterprise Edition. Sql Server 2008 is used. Apparently CPU of both IIS serers is constantly around 60-70%. Now, my question, is the load of 60-70% acceptable and how could we possible bring that down to less % (maybe using only one IIS server)? + Is 2 gb RAM enough? Assets can be up to 20mb, but on average, they are about 30kb. (the load of 60-70% is achieved with assets around 30kb). The data that gets saved with weborb is very small (2kb) and is just one object.

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• Variable directory names over SCP

  - by nedm

  We have a backup routine that previously ran from one disk to another on the same server, but have recently moved the source data to a remote server and are trying to replicate the job via scp. We need to run the script on the target server, and we've set up key-based scp (no username/password required) between the two servers. Using scp to copy specific files and directories works perfectly: scp -r -p -B [email protected]:/mnt/disk1/bsource/filename.txt /mnt/disk2/btarget/ However, our previous routine iterates through directories on the source disk to determine which files to copy, then runs them individually through gpg encryption. Is there any way to do this only by using scp? Again, this script needs to run from the target server, and the user the job runs under only has scp (no ssh) access to the target system. The old job would look something like this: #Change to source dir cd /mnt/disk1 #Create variable to store # directories named by date YYYYMMDD j="20000101/" #Iterate though directories in the current dir # to get the most recent folder name for i in $(ls -d */); do if [ "$j" \< "$i" ]; then j=${i%/*} fi done #Encrypt individual files from $j to target directory cd ./${j%%}/bsource/ for k in $(ls -p | grep -v /$); do sudo /usr/bin/gpg -e -r "Backup Key" --batch --no-tty -o "/mnt/disk2/btarget/$k.gpg" "$/mnt/disk1/$j/bsource/$k" done Can anyone suggest how to do this via scp from the target system? Thanks in advance.

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• USB keyboard stopped working in Ubuntu with error -71

  - by tapan

  I have a usb keyboard which was working perfectly till now (about a year since i have been regularly using ubuntu). It suddenly stopped working. It stopped working when I connected a USB HDD. Now the keyboard works randomly .. working for a while and then stops working for a longer time. Here is the dmesg output : [ 705.817076] usb 5-1: device not accepting address 8, error -71 [ 705.928032] usb 5-1: new low speed USB device using uhci_hcd and address 9 [ 706.336060] usb 5-1: device not accepting address 9, error -71 [ 706.448055] usb 5-1: new low speed USB device using uhci_hcd and address 10 [ 706.568044] usb 5-1: device descriptor read/64, error -71 [ 706.792049] usb 5-1: device descriptor read/64, error -71 [ 707.008060] usb 5-1: new low speed USB device using uhci_hcd and address 11 [ 707.128041] usb 5-1: device descriptor read/64, error -71 [ 707.352052] usb 5-1: device descriptor read/64, error -71 [ 707.456068] hub 5-0:1.0: unable to enumerate USB device on port 1 Based on the suggestions here i tried the following two things: echo -1 > /sys/module/usbcore/parameters/autosuspend echo Y > /sys/module/usbcore/parameters/old_scheme_first However, i am still facing the same problem. Can anyone help me out with this ? I'm using Ubuntu 10.04 Lucid Lynx.

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• GlusterFS on VMWare ESXi 5

  - by Dharmavir

  I want to build network file system on top of my VMWare ESXi based virtual nodes which are running Ubuntu 12.04 LTS. I am evalaluating options and found that GlusterFS (http://www.gluster.org/) can turn out to be a good choice. Purpose: I have about 2 dozen VM nodes with different configurations, on 2 physical nodes which has following configuration: 16 core Intel Xeon 1 TB 48 GB RAM Now as I said earlier each Physical server has about 1TB hdd and I can increase if I want additional so for now I have 2TB disk space available, these space is distributed in VM nodes I have created on which about 2 dozen VM nodes live. Now some of them being application server and mgmt server, they have plenty of free disk space which I want to utilize for some heavy storage which I can not design if I do that individually on single VM node. This way if my storage is distributed between dozens of VM nodes and about 2 or more physical nodes I have some sort of backup as well. I do not mind if data gets stored redundently but per my knowledge it might hapeen that individual VM nodes will not be able to store all of the data because complete data size for example if we take 100GB will exceed VM disk size of 70GB and then VM will also have system and program files on it. I need some suggestion that will GlusterFS be the solution for which I am looking forward to or I should go with something like hadoop? I am not too sure. But yes, I would like to utilize my free space on each VM node and while doing that if I get store data redundently I am okay because it will give me data security.

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• Squid Authentication & streaming

  - by Steve Butler

  I've got squid setup using Kerberos authentication. I'm also using squidguard as an URL redirector to block out the usual nastiness of the web. There are some sites though that we allow certain users to, and others not. This all works well, assuming I'm not using any streaming. From what i can determine from the squid logs and the wireshark traces I've done, when the initial request to stream is sent, everything is good, the authenticated username is sent with the request to squidguard. The problem is that on subsequent traffic the username is not sent to squidguard, causing it to be blocked based on default policy. I've tried using the squid built-in allow/deny stuff, but its relatively clunky, and so far squidguard has been pretty easy and fast. Here comes the question(s): How do i get Squid to pass username on all requests? (something tells me this isn't the best way) How do i get squidguard to see traffic is authenticated to a specific user even when a username isn't passed? Is there any other way of accomplishing this? A few details that may be of importance: I'm using a list of users stored in a text file for squidguard to compare against. I'm using full kerberos auth with Squid. CentOS 6.0 Squid 3.1.4 Squidguard 1.3

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• Overriding routes on Openvpn client, iproute, iptables2

  - by sarvavijJana

  I am looking for some way to route packets based on its destination ports switching regular internet connection and established openvpn tunnel. This is my configuration OpenVPN server ( I have no control over it ) OpenVPN client running ubuntu wlan0 192.168.1.111 - internet connected if Several routes applied on connection to openvpn from server: /sbin/route add -net 207.126.92.3 netmask 255.255.255.255 gw 192.168.1.1 /sbin/route add -net 0.0.0.0 netmask 128.0.0.0 gw 5.5.0.1 /sbin/route add -net 128.0.0.0 netmask 128.0.0.0 gw 5.5.0.1 And I need to route packets regarding it's destination ports for ex: 80,443 into vpn everything else directly to isp connection 192.168.1.1 What i have used during my attempts: iptables -A OUTPUT -t mangle -p tcp -m multiport ! --dports 80,443 -j MARK --set-xmark 0x1/0xffffffff ip rule add fwmark 0x1 table 100 ip route add default via 192.168.1.1 table 100 I was trying to apply this settings using up/down options of openvpn client configuration All my attempts reduced to successful packet delivery and response only via vpn tunnel. Packets routed bypassing vpn i have used some SNAT to gain proper src address iptables -A POSTROUTING -t nat -o $IF -p tcp -m multiport --dports 80,443 -j SNAT --to $IF_IP failed in SYN-ACK like 0 0,1 0,1: "70","192.168.1.111","X.X.X.X","TCP","34314 > 81 [SYN] Seq=0 Win=5840 Len=0 MSS=1460 TSV=18664016 TSER=0 WS=7" "71","X.X.X.X","192.168.1.111","TCP","81 > 34314 [SYN, ACK] Seq=0 Ack=1 Win=5792 Len=0 MSS=1428 TSV=531584430 TSER=18654692 WS=5" "72","X.X.X.X","192.168.1.111","TCP","81 > 34314 [SYN, ACK] Seq=0 Ack=1 Win=5792 Len=0 MSS=1428 TSV=531584779 TSER=18654692 WS=5" "73","192.168.1.111","X.X.X.X","TCP","34343 > 81 [SYN] Seq=0 Win=5840 Len=0 MSS=1460 TSV=18673732 TSER=0 WS=7" I hope someone has already overcome such a situation or probably knows better approach to fulfill requirements. Please kindly give me a good advice or working solution.

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• Getting HAPROXY to redirect http to https in users browser session

  - by Jon

  We are currently using a Internet cloud provider to host our SaaS platform. The platform consists of a Firewall - Cloud Provider SLB - - Apache Web Server - HAPROXY SLB - Liferay Platform We have had to use HAPROXY because of an issue with the cloud providers SLB that meant we were unable to use it for load balancing the Liferay platform applications. I have implemented HAPROXY in our secure tier and that seems to do the trick of load balancing the requests quite adequately. However during testing we encountered a functional issue whereby selecting a sub-menu from the web portal resulted in the application hanging, using an http analyser we saw that the request being passed back to the users browser was in http, from discussing this with the software vendor it transpires that the Liferay application has some hard-coded http links, and that other customers have worked around this by using physical NLB's such as F5 and redirecting the http traffic to https. The entry in the HAPROXY logs reads: haproxy[2717]: haproxy[2717]: <Apache Web Agent>:37957 [11/Apr/2013:08:07:00.128] http-uapi uapi/<ServerName> 0/0/0/9/10 200 4912 - - ---- 4/2/1/2/0 0/0 "GET /servicedesk/controller?docommand=renderradform&!key=esd_sfb001_frm_feedback_forms_list&isportalintegratedmode=true&USR=joe.bloggs%40gmail.com&_dc=1365667773097&redirecturl=controller%3Fdocommand%3Drenderbody%26%21key%3DESD_SFB001_FRM_FEEDBACK_FORMS_LIST%26isportalintegratedmode%3Dtrue&sso_token=ALiYv2UqzLsAhSw1ZchRDlCHlq44Bhj9&ONERROR=%2Fweb%2Fjsp%2Fapps%2Fportal-integration-error.jsp&itype=login&slicetoken=NW51O%242aRo%2C_Zz%2476P_9DTtnFmz6%28bhk&AUTOFORWARDURL=controller%3Fdocommand%3Drenderbody%26%21key%3DESD_SFB001_FRM_FEEDBACK_FORMS_LIST%26isportalintegratedmode%3Dtrue&LOGINPAGE=https%3A%2F%2F<FQDN of Web Portal>%2Fweb%2F4732cf01-82c3-4bc5-b6c9-552253e672cf%2Fworkflow-tools&appid=1&!uid=1&!redownloadToken=7.0.3.1.1363611301.0&userlocale=en_US&!datechanged=2012-05-18%2015:05:31.38 HTTP/1.1" :37957 [11/Apr/2013:08:07:00.128] http-uapi uapi/<ServerName> 0/0/0/9/10 200 4912 - - ---- 4/2/1/2/0 0/0 "GET /servicedesk/controller?docommand=renderradform&!key=esd_sfb001_frm_feedback_forms_list&isportalintegratedmode=true&USR=joe.bloggs%40gmail.com&_dc=1365667773097&redirecturl=controller%3Fdocommand%3Drenderbody%26%21key%3DESD_SFB001_FRM_FEEDBACK_FORMS_LIST%26isportalintegratedmode%3Dtrue&sso_token=ALiYv2UqzLsAhSw1ZchRDlCHlq44Bhj9&ONERROR=%2Fweb%2Fjsp%2Fapps%2Fportal-integration-error.jsp&itype=login&slicetoken=NW51O%242aRo%2C_Zz%2476P_9DTtnFmz6%28bhk&AUTOFORWARDURL=controller%3Fdocommand%3Drenderbody%26%21key%3DESD_SFB001_FRM_FEEDBACK_FORMS_LIST%26isportalintegratedmode%3Dtrue&LOGINPAGE=https%3A%2F%2F<FQDN of Web Portal>%2Fweb%2F4732cf01-82c3-4bc5-b6c9-552253e672cf%2Fworkflow-tools&appid=1&!uid=1&!redownloadToken=7.0.3.1.1363611301.0&userlocale=en_US&!datechanged=2012-05-18%2015:05:31.38 HTTP/1.1" The corresponding HTTP browser entry shows: http://<FQDN of ServiceDesk>/servicedesk/controller?docommand=renderradform&!key=esd_org019_frm_contact_list&isportalintegratedmode=true&USR=joe.bloggs%40gmail.com&_dc=1365665987887&redirecturl=controller%3Fdocommand%3Drenderbody%26%21key%3DESD_ORG019_FRM_CONTACT_LIST%26isportalintegratedmode%3Dtrue&sso_token=3NxsXYORMPp32SwL8ftVUCMH2QdWLH82&ONERROR=%2Fweb%2Fjsp%2Fapps%2Fportal-integration-error.jsp&itype=login&slicetoken=NW51O%242aRo%2C_Zz%2476P_9DTtnFmz6%28bhk&AUTOFORWARDURL=controller%3Fdocommand%3Drenderbody%26%21key%3DESD_ORG019_FRM_CONTACT_LIST%26isportalintegratedmode%3Dtrue&LOGINPAGE=https%3A%2F%2F<FQDN of Web Portal>>%2Fweb%2F4732cf01-82c3-4bc5-b6c9-552253e672cf%2Fapplication-setup&appid=1&!uid=1&!redownloadToken=7.0.3.1.1363611301.0&userlocale=en_US&!datechanged=2012-10-26%2019:00:25.08 From reading through the forums and other sites it looks like we should be use to use HAPROXY to redirect the traffic to https, but try as I might I cant get it to work. This is our HAPROXY configuration: global log 127.0.0.1 local2 chroot /var/lib/haproxy pidfile /var/run/haproxy.pid maxconn 4000 user haproxy group haproxy daemon stats socket /var/lib/haproxy/stats defaults mode http log global option httplog option dontlognull option http-server-close option forwardfor except 127.0.0.0/8 option redispatch retries 3 timeout http-request 10s timeout queue 1m timeout connect 10s timeout client 1m timeout server 1m timeout http-keep-alive 10s timeout check 10s maxconn 3000 frontend http-openfire bind *:7070 default_backend openfire backend openfire balance roundrobin server <serverName> <IPv4 Address>:7070 check server <serverName> <IPv4 Address>:7070 check frontend http-uapi bind *:7080 default_backend uapi backend uapi balance roundrobin server <serverName> <IPv4 Address>:7080 check server <serverName> <IPv4 Address>:7080 check frontend http-sec bind *:8080 default_backend sec backend sec balance roundrobin server <serverName> <IPv4 Address>:8080 check server <serverName> <IPv4 Address>:8080 check frontend http-wall bind *:9080 default_backend wall backend wall balance roundrobin server <serverName> <IPv4 Address>:9080 check server <serverName> <IPv4 Address>:9080 check frontend http-xmpp bind *:9090 default_backend xmpp backend xmpp balance roundrobin server <serverName> <IPv4 Address>:9090 check server <serverName> <IPv4 Address>:9090 check frontend http-aim bind *:10080 default_backend aim backend aim balance roundrobin server <serverName> <IPv4 Address>:10080 check server <serverName> <IPv4 Address>:10080 check frontend http-servicedesk bind *:8081 default_backend servicedesk backend servicedesk balance roundrobin server <serverName> <IPv4 Address>:8081 check server <serverName> <IPv4 Address>:8081 check listen stats :1936 mode http stats enable stats hide-version stats realm Haproxy\ Statistics stats uri / stats auth haproxy:<Password> I have tried following the articles listed posted on http://stackoverflow.com/questions/13227544/haproxy-redirecting-http-to-https-ssl and http://parsnips.net/haproxy-http-to-https-redirect/ but that hasn't made any difference. Am I on the right track with this or are we trying to achieve the impossible?, I'm hoping I'm just being an idiot and one of you good people can point me in the right direction.

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• Change the default route without affecting existing TCP connections

  - by Patrick Horn

  Let's say I have two public network addresses on my server: one NAT through an ISP (192.168.99.0/24), and a VPN through a different ISP (192.168.1.0/24), already configured with a per-host route to the VPN server through my ISP. Here is my initial routing table. I am currently routing through my ISP on subnet 192.168.99.0/24. $ route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.99.1 0.0.0.0 UG 0 0 0 eth1 55.66.77.88 192.168.99.1 255.255.255.255 UGH 0 0 0 eth1 192.168.99.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 tap0 Now, I want new TCP connections to switch to my 192.168.1.0/24 so I type the following: $ route add -net 0.0.0.0 gw 192.168.1.1 dev tap0 When I do this, it causes some long-standing TCP connections to hang. Is there a way to I safely change the default interface for new connections, while allowing existing TCP connections to use the old route (i.e. do I need enable some sort of stateful routing table)? I am okay with a solution that only works with established TCP connections, and I don't care how hacky it is. For example, if there is a way to add temporary iptables rules for existing connections to force them over the old route. But there has to be some way to do this. EDIT: Just a note about a simple "route add -host ... " for existing connections: this solution would work if I am fine with leaving a subset of IPs on the old interface. However, in my application, this actually doesn't solve my problem because I want to allow new connections to come on the new interface even if they have the same source IP. I'm now looking at using the "ip route" command to set source-based routing rules.

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• Windows 7 - Windows XP - sharing - why isn't working?

  - by durumdara

  Hi! This is seems to be "hardware" and not "software" / "programming" question, but I need to use this share in my programs, so it is "close to programming". We had an XP based wireless network. The server is XP Professional, the clients are XP Home (Notebooks). This was working well with folder sharing (with user rights, not simple share). Then we replaced the one of the notebook with Win7/X64 notebook. First time this can reach the server, and the another client too. Later I went to another sites, and connect to another servers, another networks. And then, when I return to this network, I saw that I cannot connect to this server. Nothing of resources I see, and when try to dbl click on this computer, I got login window, where I can write anything, never I can login... The interesting part, that: Another XP home can see the server, can login as quest, or with other user. The server can see the XP home notebook. The Win7 can see the notebook's shared folders, and XP home can see the Win7 shared folders. The server can see the Win7 folders, BUT: the Win7 cannot see the server folders. Cannot see the resources too... The Win7 is in "work networking group", the group name is not mshome. I tried everything on the server, I tried to remove MS client, restore it with simple sharing, set guest password, etc., but I lost the possibilities to access this server from Win7. Does anyone have any idea what I need to see, what I need to set to access these resource - to use them in my programs? Thanks for every info, link: dd

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• How do you install .net4 on a Server 2008 r2 machine through psremoting in powershell?

  - by Jake

  I need to write a script that installs .net 4 remotely using powershell to a group of Server 2008 R2 machines. I based my script off of http://social.technet.microsoft.com/Forums/en-US/winserverpowershell/thread/3045eb24-7739-4695-ae94-5aa7052119fd/. enter-pssession -computername localhost $arglist = "/q /norestart /log C:\Users\tempuser\Desktop\dotnetfx4" $filepath = "C:\Users\tempuser\Desktop\dotNetFx40_Full_setup.exe" Start-Process -FilePath $filepath -ArgumentList $arglist -Wait -PassThru After running the command I would get the following log errors (running the same lines locally would install .net without error): Action: Downloading Item Failed to CreateJob : hr= 0x80200014 Action: Performing actions on all Items Action: Performing Action on Exe at C:\Users\tempuser\Desktop\dotnetfx4\SetupUtility.exe Exe (C:\Users\tempuser\Desktop\dotnetfx4\SetupUtility.exe) succeeded. Exe Log File: dd_SetupUtility.txt Action complete Action: ServiceControl - Stop clr_optimization_v2.0.50727_32 ServiceControl operation succeeded! Action complete Action: ServiceControl - Stop clr_optimization_v2.0.50727_64 ServiceControl operation succeeded! Action complete Action: Performing Action on Exe at C:\Users\tempuser\AppData\Local\Temp\Microsoft .NET Framework 4 Setup_4.0.30319\Windows6.1-KB958488-v6001-x64.msu Exe (C:\Users\tempuser\AppData\Local\Temp\Microsoft .NET Framework 4 Setup_4.0.30319\Windows6.1-KB958488-v6001-x64.msu) failed with 0x5 - Access is denied. . PerformOperation on exe returned exit code 5 (translates to HRESULT = 0x5) Action complete OnFailureBehavior for this item is to Rollback. Action: Performing actions on all Items Action complete Action complete Action: Downloading http://go.microsoft.com/fwlink/?LinkId=164184&clcid=0x409 using WinHttp WinHttpDetectAutoProxyConfigUrl failed with error: 12180 Unable to retrieve Proxy information although WinHttpGetIEProxyConfigForCurrentUser called succeeded Action complete C:\Users\tempuser\AppData\Local\Temp\Microsoft .NET Framework 4 Setup_4.0.30319\TMPF279.tmp.exe: Verifying signature for netfx_Core.mzz C:\Users\tempuser\AppData\Local\Temp\Microsoft .NET Framework 4 Setup_4.0.30319\TMPF279.tmp.exe Signature verified successfully for netfx_Core.mzz Action complete Decompression completed with code: 16389 Decompression of payload failed: C:\Users\tempuser\AppData\Local\Temp\Microsoft .NET Framework 4 Setup_4.0.30319\netfx_Core.mzz Action complete Final Result: Installation failed with error code: (0x80074005) (Elapsed time: 0 00:00:28). Is there some security setting or perhaps something else I've missed?

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• SSD, AHCI and write performance

  - by Dan

  We've started to deploy SSD drives to our developers workstations. At this moment we're having the unpleasant surprise that the systems using the new SSDs often freeze, with the HDD activity led blinking or being continuously on. Benchmarks shows read speeds around 180 MB/s, but write speeds around 5 MB/s. All developers are using Windows 7 Enterprise, 64 bit, SP1. One of our developers suggested (based on his experience) the following sequence: backup the workstation use a tool to completely erase the SSD make sure AHCI is enabled in BIOS install Windows restore from backup So far, this procedure seems to work (we're still testing, but write speed seems to be 120 MB/s). There are some questions in this context: why do we have to completely reinstall Windows? Is it possible to clean the SSD without reinstalling Windows? Is there a reliable tool? If AHCI was disabled when Windows was installed and we enable it, shouldn't this be enough to correct the write performance issue? If we have to completely erase the SSDs, does this mean the SSDs we've received were used before (SH)? I'm wondering this because the package I've got was open (I didn't think about it at that time, as I considered one of my coworkers simply took a peek inside the package). Has anyone seen a similar problem before?

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• Linux Mint reset display resolution from console

  - by wullxz

  I have a Linux Mint 13 Xfce in a VMware Workstation 8 VM and set the resolution from 800x600 to 1280x768 and now I get permanently logged out when I try to login. I knew how to get back to my old resolution back in the xorg.conf days but Linux Mint now uses xrandr which won't display any displays when running # xrandr because X is not running (of course not - I can't login over GUI). I know that there are configuration files in /etc/X11/Xsession.d/ because I configured a debian based thinclient's resolution in a file called /etc/X11/Xsession.d/91configure_display but that file doesn't exist in my Linux Mint VM. So, how do I reset my X screen resolution from console? Edit: I forgot to tell you that I can't change resolution in console: # xrandr -s 800x600 Can't open display This message appears every time I use xrandr or xrandr -s *resolution* Update: I tried what bWowk suggested: # export DISPLAY=:0.0 # xrandr -s 800x600 No protocol specified No protocol specified Can't open display :0.0 So, that doesn't work either. Isn't there a configuration file that is executed every time X starts? X is running btw - ps aux | grep X shows one process /usr/bin/X running.

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• What breaks in a Windows domain if a member has a high time skew?

  - by Ryan Ries

  It's taken for granted by most IT people that in a Windows domain, if a member server's clock is off by more than 5 minutes (or however many minutes you've configured it for) from that of its domain controller - logons and authentications will fail. But that is not necessarily true. At least not for all authentication processes on all versions of Windows. For instance, I can set my time on my Windows 7 client to be skewed all to heck - logoff/logon still works fine. What happens is that my client sends an AS_REQ (with his time stamp) to the domain controller, and the DC responds with KRB_AP_ERR_SKEW. But the magic is that when the DC responds with the aforementioned Kerberos error, the DC also includes his time stamp, which the client in turn uses to adjust his own time and resubmits the AS_REQ, which is then approved. This behavior is not considered a security threat because encryption and secrets are still being used in the communication. This is also not just a Microsoft thing. RFC 4430 describes this behavior. So my question is does anyone know when this changed? And why is it that other things fail? For instance, Office Communicator kicks me off if my clock starts drifting too far out. I really wish to have more detail on this. edit: Here's the bit from RFC 4430 that I'm talking about: If the server clock and the client clock are off by more than the policy-determined clock skew limit (usually 5 minutes), the server MUST return a KRB_AP_ERR_SKEW. The optional client's time in the KRB-ERROR SHOULD be filled out. If the server protects the error by adding the Cksum field and returning the correct client's time, the client SHOULD compute the difference (in seconds) between the two clocks based upon the client and server time contained in the KRB-ERROR message. The client SHOULD store this clock difference and use it to adjust its clock in subsequent messages. If the error is not protected, the client MUST NOT use the difference to adjust subsequent messages, because doing so would allow an attacker to construct authenticators that can be used to mount replay attacks.

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• PHP Mail() to Gmail = Spam

  - by grantw

  Recently Gmail has started marking emails sent directly from my server (using php mail()) as spam and I'm having problems trying to find the issue. If I send an exact copy of the same email from my email client it goes to the Gmail inbox. The emails are plain text, around 7 lines long and contain a URL link in plain text. As the emails sent from my client are getting through fine I'm thinking that the content isn't the issue. It would be greatly appreciated if someone could take a look at the the following headers and give me some advice why the email from the server is being marked as spam. Email from Server: Delivered-To: [email protected] Received: by 10.49.98.228 with SMTP id el4csp101784qeb; Thu, 15 Nov 2012 14:58:52 -0800 (PST) Received: by 10.60.27.166 with SMTP id u6mr2296595oeg.86.1353020331940; Thu, 15 Nov 2012 14:58:51 -0800 (PST) Return-Path: [email protected] Received: from dom.domainbrokerage.co.uk (dom.domainbrokerage.co.uk. [174.120.246.138]) by mx.google.com with ESMTPS id df4si17005013obc.50.2012.11.15.14.58.51 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 15 Nov 2012 14:58:51 -0800 (PST) Received-SPF: pass (google.com: domain of [email protected] designates 174.120.246.138 as permitted sender) client-ip=174.120.246.138; Authentication-Results: mx.google.com; spf=pass (google.com: domain of [email protected] designates 174.120.246.138 as permitted sender) [email protected]; dkim=pass [email protected] DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=domainbrokerage.co.uk; s=default; h=Date:Message-Id:Content-Type:Reply-to:From:Subject:To; bh=2RJ9jsEaGcdcgJ1HMJgQG8QNvWevySWXIFRDqdY7EAM=; b=mGebBVOkyUhv94ONL3EabXeTgVznsT1VAwPdVvpOGDdjBtN1FabnuFi8sWbf5KEg5BUJ/h8fQ+9/2nrj+jbtoVLvKXI6L53HOXPjl7atCX9e41GkrOTAPw5ZFp+1lDbZ; Received: from grantw by dom.domainbrokerage.co.uk with local (Exim 4.80) (envelope-from [email protected]) id 1TZ8OZ-0008qC-Gy for [email protected]; Thu, 15 Nov 2012 22:58:51 +0000 To: [email protected] Subject: Offer Accepted X-PHP-Script: www.domainbrokerage.co.uk/admin.php for 95.172.231.27 From: My Name [email protected] Reply-to: [email protected] Content-Type: text/plain; charset=Windows-1251 Message-Id: [email protected] Date: Thu, 15 Nov 2012 22:58:51 +0000 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - dom.domainbrokerage.co.uk X-AntiAbuse: Original Domain - gmail.com X-AntiAbuse: Originator/Caller UID/GID - [500 500] / [47 12] X-AntiAbuse: Sender Address Domain - domainbrokerage.co.uk X-Get-Message-Sender-Via: dom.domainbrokerage.co.uk: authenticated_id: grantw/from_h Email from client: Delivered-To: [email protected] Received: by 10.49.98.228 with SMTP id el4csp101495qeb; Thu, 15 Nov 2012 14:54:49 -0800 (PST) Received: by 10.182.197.8 with SMTP id iq8mr2351185obc.66.1353020089244; Thu, 15 Nov 2012 14:54:49 -0800 (PST) Return-Path: [email protected] Received: from dom.domainbrokerage.co.uk (dom.domainbrokerage.co.uk. [174.120.246.138]) by mx.google.com with ESMTPS id ab5si17000486obc.44.2012.11.15.14.54.48 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 15 Nov 2012 14:54:49 -0800 (PST) Received-SPF: pass (google.com: domain of [email protected] designates 174.120.246.138 as permitted sender) client-ip=174.120.246.138; Authentication-Results: mx.google.com; spf=pass (google.com: domain of [email protected] designates 174.120.246.138 as permitted sender) [email protected]; dkim=pass [email protected] DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=domainbrokerage.co.uk; s=default; h=Content-Transfer-Encoding:Content-Type:Subject:To:MIME-Version:From:Date:Message-ID; bh=bKNjm+yTFZQ7HUjO3lKPp9HosUBfFxv9+oqV+NuIkdU=; b=j0T2XNBuENSFG85QWeRdJ2MUgW2BvGROBNL3zvjwOLoFeyHRU3B4M+lt6m1X+OLHfJJqcoR0+GS9p/TWn4jylKCF13xozAOc6ewZ3/4Xj/YUDXuHkzmCMiNxVcGETD7l; Received: from w-27.cust-7941.ip.static.uno.uk.net ([95.172.231.27]:1450 helo=[127.0.0.1]) by dom.domainbrokerage.co.uk with esmtpa (Exim 4.80) (envelope-from [email protected]) id 1TZ8Ke-0001XH-7p for [email protected]; Thu, 15 Nov 2012 22:54:48 +0000 Message-ID: [email protected] Date: Thu, 15 Nov 2012 22:54:50 +0000 From: My Name [email protected] User-Agent: Postbox 3.0.6 (Windows/20121031) MIME-Version: 1.0 To: [email protected] Subject: Offer Accepted Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - dom.domainbrokerage.co.uk X-AntiAbuse: Original Domain - gmail.com X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - domainbrokerage.co.uk X-Get-Message-Sender-Via: dom.domainbrokerage.co.uk: authenticated_id: [email protected]

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• attach / detach mssql 2008 sql server manager [SOLVED]

  - by Tillebeck

  An external consult wrote a guide on how to copy a database. Step two was detach the database using Sql Server Manager. After the detach the database was not visible in the SQL Server Manager... Not much to do but write a mail to the service provider asking to have the database attached again. The service porviders answer: Not posisble to attach again since the SQL Server security has been violated". Rolling back to last backup is not the option I want to use. Can any one give feedback if this seems logic and reasonable to assume that a detached database in a SQL Server 2008 accessed through SQL Server Manager cannot be reattached. It was done by rightclicking the database and choosing detach. -- update -- Based on the comments below I update the question with the server setup. There are two dedicated servers: srv1: Web server with remote desktop and an Sql Server Manager srv2: Sql server that can be accessed through the Sql Server Manager on the web server -- update2 -- After a restart of the server the DBA could suddenly do the attachment of the database. And I guess that after the restart it was a simple task. So all of your answer were rigth! It seems that I can only mark one as a correct answer so I marked the first answer correct. But all are correct answer. Thanks a lot. Without posting the link to this thread then we might had so suffer while watching our database beeing restored by a backup :-) Thanks a lot. BR. Anders

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• SharePoint Records Center Submitted E-mail Records not picked up

  - by Kenneth Verburg

  We have set up a new SharePoint 2007 site with a Records Repository. We're using Exchange 2007 Managed Folders to route e-mails to this repository based on the 'label' attached to the e-mail as set in the Exchange 2007 journaling options. E-mails added to a Managed Folder get sent to SharePoint, they end up in the "Submitted E-mail Records" list of the Records Repository. That's according to plan, but the e-mails are not routed to the respective document library as defined by the label. Instead an error appears in the event viewer for every e-mail listed in the Submitted E-mail Records list, on every interval of the records repository schedule (set to every two minutes for testing purposes): Value cannot be null, parameter name: g. Sending a document from the SharePoint site iself to the Records Repository via the Send To... link works fine, but e-mails get stuck in the list... We have set Document Libraries in the Respository with and without content types (with matching names with the Label and the Record Routing rule set). Any ideas what could be wrong? This is in the event log: Every two minutes the following error appears in the Application Log: Source: Office SharePoint Server Category: Records Center Type: Error Event ID: 4975 User: N/A Computer: SPS2007 Description: Value cannot be null. Parameter name: g For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

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• Sendmail in Nexenta core 3.0.1

  - by maximdim

  I'm trying to setup sendmail in Nexenta core 3.0.1 (Solaris based OS). All I want is to be able to send emails from that host - like notifications about failures, cron jobs output etc. Initially Nexenta core doesn't have sendmail so here is what I've done: apt-get install sunwsndmu Now there is a sendmail in /usr/sbin/sendmail. When I try to send email from command line: $mail maxim test . It doesn't give me any error but in log file I see: Dec 20 12:41:08 nas sendmail[12295]: [ID 801593 mail.info] oBKHf8u7012295: from=maxim, size=107, class=0, nrcpts=1, msgid=<201012201741.oBKHf8u7012295@nas>, relay=maxim@localhost Dec 20 12:41:08 nas sendmail[12295]: [ID 801593 mail.info] oBKHf8u7012295: to=maxim, ctladdr=maxim (1000/10), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30107, relay=[127.0.0.1] [127.0.0.1], dsn=4.0.0, stat=Deferred: Connection refused by [127.0.0.1] So I guess I need to have SMTP service running. How do I do that in Nexenta? svcs -a | grep sendmail doesn't return anything and # svcadm enable sendmail svcadm: Pattern 'sendmail' doesn't match any instances I'm not married to sendmail so if there are easier ways to achieve y goal I'm open to suggestions as well. Thanks,

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