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• Microsoft Hyper-V Networking and Configuration - Part 1

  In the first of a series of articles on Hyper-V Networking, Nirmal explains Hyper-V networking and VLAN tagging, and shows how to set up a Virtual Network switch. Once this is done, the Hyper-V Virtual Network Switches can be used to connect unlimited no. of Virtual Machines.

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• How do I type Home on a MacBook Pro?

  - by Daryl Spitzer

  What combination of keys (fn, control, option, command, arrow keys) is the equivalent of the Home key on a MacBook Pro?

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• Could not calculate upgrade from Maverick Meerkat to Natty Narwhal

  - by xralf

  I upgraded from Ubuntu Lucid Lynx to Maverick Meerkat with the following commands: sudo apt-get update && sudo apt-get upgrade sudo apt-get install update-manager-core sudo vi /etc/update-manager/release-upgrades and changed the last line to Prompt=normal sudo do-release-upgrade -d This upgrade was OK. I decided to repeat the same steps and to upgrade Maverick Meerkat to Natty Narwhal. It ended with this message: Building data structures... Done Calculating the changes Calculating the changes Could not calculate the upgrade An unresolvable problem occurred while calculating the upgrade: Can not mark 'xubuntu-desktop' for upgrade This can be caused by: * Upgrading to a pre-release version of Ubuntu * Running the current pre-release version of Ubuntu * Unofficial software packages not provided by Ubuntu If none of this applies, then please report this bug against the 'update-manager' package and include the files in /var/log/dist-upgrade/ in the bug report. Restoring original system state Aborting Reading package lists... Done Building dependency tree Reading state information... Done Building data structures... Done === Command detached from window (Mon Nov 21 09:37:21 2011) === === Command terminated with exit status 1 (Mon Nov 21 09:37:21 2011) === How can I correct it?

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• Ctrl+Z and fg to append commands

  - by avilella

  I would like to know what is the behaviour of Ctrl+Z and fg in bash when wanting to append commands to be executed after a running command has finished. For example, in the sequence for commands below, I would expect the console to display "1", then "2", then "3", then "4", but I only get the last command, echo 4, after sleep 30 finishes: avilella@magneto:~$ sleep 30 && echo 1 ^Z [1]+ Stopped sleep 30 avilella@magneto:~$ fg && sleep 5 && echo 2 sleep 30 ^Z [1]+ Stopped sleep 30 avilella@magneto:~$ fg && sleep 5 && echo 3 sleep 30 ^Z [1]+ Stopped sleep 30 avilella@magneto:~$ fg && sleep 5 && echo 4 sleep 30 4 Any ideas?

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• MAC OSX 10.5.8 need to save rsync password with ssh-copy-id

  - by Brady

  Hello all, I'll start by saying I'm very new to MAC but comfortable in using the command line thanks to using a linux a lot. I currently have rsync setup to run between a MAC OSX 10.5.8 server to a Linux Centos 5.5 Server. This is the command I'm running on the MAC server: rsync -avhe ssh "/Path/To/Data" [email protected]:data/ As it does it prompts for a password but I need it to save the password. After looking around I need to use: ssh-keygen -t dsa save the passkey and then move it over to the Linux server using: ssh-copy-id -i .ssh/id_dsa.pub [email protected] But ssh-copy-id doesnt seem to exist on the MAC server. How do I copy this key over? I've tried searching for the answer myself but the help seems to be all over the place for this.. Any help is greatly appreciated. Scott

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• How do I make my USB Bluetooth dongle work in Ubuntu 11.04 ? (Can't init device hci0: Connection timed out (110)) [closed]

  - by MaikoID

  I've a USB bluetooth dongle root@maiko-cce-lin:~# lsusb | grep Bluetooth Bus 001 Device 007: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) that isn't working properly, hardly-ever it works but stops working in my next reboot. what I've tried it isn't software blocked root@maiko-cce-lin:~# rfkill list 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no 1: hci0: Bluetooth Soft blocked: no Hard blocked: no my device is recognized by hciconfig root@maiko-cce-lin:~# hciconfig -a hci0: Type: BR/EDR Bus: USB BD Address: 00:1F:81:00:01:1C ACL MTU: 1021:4 SCO MTU: 180:1 DOWN RX bytes:330 acl:0 sco:0 events:8 errors:0 TX bytes:24 acl:0 sco:0 commands:30 errors:22 Features: 0xff 0x3e 0x09 0x76 0x80 0x01 0x00 0x80 Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 Link policy: Link mode: SLAVE ACCEPT but I can't turn on my hci interface root@maiko-cce-lin:~# hciconfig hci up Can't init device hci0: Connection timed out (110) I don't understand why.. the hcitool command doesn't show any device. root@maiko-cce-lin:~# hcitool dev Devices: I've tried to restart my bluetooth service too with this command and make all these previous commands again but without success. root@maiko-cce-lin:~# service bluetooth restart * Stopping bluetooth [ OK ] * Starting bluetooth [ OK ] root@maiko-cce-lin:~# The dongle works if you disconnect it from usb, wait a few seconds and connect it again. so there must be better solution for it ( a solution not involving physically removing the dongle!)

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• Atheros wireless not working

  - by Chandru1

  I have been struggling hard since i have installed Ubuntu 10.10 but it has been difficult for me to get my wifi working. So here is what i tried. First i checked whether i have the driver using the ifconfig command and it shows the wireless lan driver as wlan0. Next, i tried the command iwlist wlan0 scanning by becoming the root which gave me the output as no scan results. Next, i visited this link https://help.ubuntu.com/community/WifiDocs/Driver/Atheros to see as to what problem my laptop may have. I do own have an ath5k chipset. And as i followed the instructions in the above link in one of the blacklist-ath_pci.conf file had this written in it. For some Atheros 5K RF MACs, the madwifi driver loads buts fails to correctly initialize the hardware, leaving it in a state from which ath5k cannot recover. To prevent this condition, stop madwifi from loading by default. Use Jockey to select one driver or the other. (Ubuntu: #315056, #323830 I am not that good at Linux but i have given it a try. I am desperate to have my wifi working and i would be glad if this community could help. ADDED: If anyone would like to know as to what drivers i am using this is the output. network description: Wireless interface product: AR2413 802.11bg NIC vendor: Atheros Communications Inc. physical id: 3 bus info: pci@0000:0a:03.0 logical name: wlan0 version: 01 serial: 00:19:7d:d3:0c:fd width: 32 bits clock: 33MHz capabilities: pm bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=ath5k driverversion=2.6.35-24-generic firmware=N/A latency=168 link=no maxlatency=28 mingnt=10 multicast=yes wireless=IEEE 802.11bg resources: irq:18 memory:d0000000-d000ffff Some more information and output as to what i have done. lsmod | grep ath ath5k 130083 0 mac80211 231541 1 ath5k ath 8153 1 ath5k cfg80211 144470 3 ath5k,mac80211,ath led_class 2633 1 ath5k

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• Remote File Copy - Win Server 2008

  - by Scott

  I'd like to copy backup archives from a remote server to my client machine. In the past, I've installed an FTP server on the remote machine and directed local server backups to dump into that directory. I'd then FTP in from my client machine. Just wondering if there is a simpler way to do this using Win 7 (Client) Win Server 2008? Robocopy? RDC command line options? For example, I can easily remote desktop in and drag the files from the server to my local machine. If there is an easy command line way to do this, then I don't have to setup an FTP server which is ideal. Thanks.

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• Why won't the floppy mount?

  - by dboarman-FissureStudios

  The 1.44Meg floppy won't mount in my Nautilus file browser. When I try to mount it, it says there is no media in the drive. Yet, I can write to the floppy through the terminal using the 'cp' command. I can enter the command: mount -t ext2 /floppy and it mounts. I have also run a check and the disk itself is 100% clean. So, why can't I get the nautilus browser to open up the floppy? Is there a way to see the actual floppy from the terminal?

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• OS X 10.6 Snow Leopard no longer mounting an external USB drive

  - by Brant Bobby

  I have a 1TB generic external hard drive containing a single HFS partition. I originally formatted this using Disk Utility and it worked fine. Now, for some reason, it's not auto-mounting when I start up. Using mount at the command line gives the following error: $ sudo mount /dev/disk1s2 /Volumes/Test /dev/disk1s2 on /Volumes/Test: Incorrect super block. ... but if I use the mount_hfs command it works fine, mounts, and is readable. $ mount_hfs /dev/disk1s2 /Volumes/Test/ fsck gives me an error about a bad super block: $ fsck /dev/disk1 ** /dev/rdisk1 (NO WRITE) BAD SUPER BLOCK: MAGIC NUMBER WRONG ... but fsck_hfs -fn /dev/disk1s2 doesn't find any problems and reports that the volume appears to be OK. In Disk Utility, the drive appears to have a single MS-DOS partition with a curious notice about how it appears to be partitioned for Boot Camp: I have the Boot Camp HFS driver installed in WIndows 7, and that OS sees the drive/partition normally. What's wrong with my disk?

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• Easy remote communication without WCF

  - by Ralf Westphal

  If you´ve read my previous posts about why I deem WCF more of a problem than a solution and how I think we should switch to asynchronous only communication in distributed application, you might be wondering, how this could be done in an easy way. Since a truely simple example to get started with WCF still is drawing quite some traffic to this blog, let me pick up on that and show you, how to accomplish the same but much easier with an async communication API. For simplicities sake let me put all...(read more)

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• Killing an unresponsive process

  - by Sathya

  I had closed an instance of utorrent. The task no longer appears in Applications, however the process utorrent.exe appears in Processes tab of Task Manager. I tried to kill using: Kill process button in Task Manager Kill process option in SysInternals Process Explorer Suspend, resume, restart in SysInternals Process Explorer command prompt by using the command taskkill /f /im utorrent.exe Stop-Process commandlet in Windows PowerShell. All of these have failed, the process just doesn't end. I cannot restart uTorrent because of the existing process running. Is there anyway I can kill this without having to resort to a system reboot ? I'm using Windows 7 Ultimate, OEM.

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• How to resolve these errors and install ClamAV for Perl under Ubuntu/Debian?

  - by Alex R

  After successful apt-get install clamav I then did: perl -MCPAN -e shell install File::Scan::ClamAV and got CPAN.pm: Going to build J/JA/JAMTUR/File-Scan-ClamAV-1.91.tar.gz Cannot find clamd in /root/bin (or a number of other places) - are you sure clamav in installed? Warning: No success on command[/usr/bin/perl Makefile.PL INSTALLDIRS=site] JAMTUR/File-Scan-ClamAV-1.91.tar.gz /usr/bin/perl Makefile.PL INSTALLDIRS=site -- NOT OK Running make test Make had some problems, won't test Running make install Make had some problems, won't install Failed during this command: JAMTUR/File-Scan-ClamAV-1.91.tar.gz : writemakefile NO '/usr/bin/perl Makefile.PL INSTALLDIRS=site' returned status 512 What did I do wrong?

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• Set a Video as Your Desktop Wallpaper with VLC

  - by DigitalGeekery

  Are you tired of static desktop wallpapers and want something a bit more entertaining? Today we’ll take a look at setting a video as wallpaper in VLC media player. Download and install VLC player. You’ll find the download link below. Open VLC and select Tools > Preferences. On the Preferences windows, select the Video button on the left. Under Video Settings, select DirectX video output from the Output dropdown list. Click Save before exiting and then restart VLC. Next, select a video and begin playing it with VLC. Right-click on the screen, select Video, then DirectX Wallpaper.   You can achieve the same result by selecting Video from the Menu and clicking DirectX Wallpaper.   If you’re using Windows Aero Themes, you may get the warning message below and your theme will switch automatically to a basic theme.   After the Wallpaper is enabled, minimize VLC player and enjoy the show as you work.     When you are ready to switch back to your normal wallpaper, click Video, and then close out of VLC.   Occasionally we had to manually change our wallpaper back to normal. You can do that by right clicking on the desktop and selecting your theme.   Conclusion This might not make the most productive desktop environment, but it is pretty cool. It’s definitely not the same old boring wallpaper! Download VLC Similar Articles Productive Geek Tips Dual Monitors: Use a Different Wallpaper on Each Desktop in Windows 7, Vista or XPDual Monitors: Use a Different Wallpaper on Each DesktopDesktop Fun: Video Game Icon PacksDesktop Fun: Starship Theme WallpapersDesktop Fun: Mountains Theme Wallpapers TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Snagit 10 VMware Workstation 7 OpenDNS Guide Google TV The iPod Revolution Ultimate Boot CD can help when disaster strikes Windows Firewall with Advanced Security – How To Guides Sculptris 1.0, 3D Drawing app

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• Loggon to Internet Hotspot from within Linux Terminal

  - by Saif Bechan

  For internet I use a local Hotspot service. I have internet when I start my browser and fill in my username and password. This stays as long as I do not shut down my PC for a while. I run some virtual machines, centos, debian, from the command line. I run these just for small test purposes, nothing special, and security is not an issue for me at all. I want to have these VM's connect directly to the hotspot if this is possible. So they each have there own IP. I have enough hotspot accounts to do so. I can do this with a bridged connection in VMware which works find with a GUI. But I run these OS's from the command line. I only need to know a way how to get the hotspot to validate my credentials. Is there a way of doing this without having a gui.

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• How to backup in Fedora-13?

  - by Ramy

  I just bought a 1.5T HDD and a disk enclosure. I connected this disk to my laptop via the provided USB cable. I then used the following command: rsync -r -t -v --progress --delete -c -l -z / /media/C4E41A11E41A0678/Moonface_BKP/ I ran this for a long (long long) time when i noticed that what had been backed up to the HDD began to be backed up. In other words, when i ran the command, it created a /media directory and a C4... directory below that and kept recursively backing up this directory (since, I suppose, I was backing up the hard drive itself, too). So...what's the proper way to use rsync?

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• Advice for moving from custom domain hosted on blogspot to new custom domain on hosting provider [closed]

  - by Chan

  Need some advice :) a) Facts: 1. Currently, we have a blog www.thebigbigsky.net hosted on blogspot.com. The site has been up for around a year and google had cached some of the posts. 2. The idea for setting up the blog was to promote/share articles/write-up about personal development and self-growth, and also to offer counseling services related to them. 3. There is another subdomain - chinese.thebigbigsky.net hosting similar blog posts but in Chinese. This is hosted on blogspot as well. b) What we want to do: 1. We did some research on the internet and understood that, to make a website more popular, it is better to have a domain name that is related to the content of the site. Hence, in our case, a domain name containing "personal development" would be more ideal and easier for people to remember. 2. Hence, we are thinking to move away from blogspot to a meaningful new domain (example: personaldevelopmentwithxyz.com) and move all contents there. The new domain will be hosted on a hosting provider e.g. hostgator.com c) Here are the steps we have in mind: 1. Register the new domain (example: personaldevelopmentwithxyz.com) 2. Get a hosting provider hostgator.com 3. Setup a new site based on Wordpress, import all contents from existing blog to this new site - personaldevelopmentwithxyz.com. 4. Switch current blog back to thebigbigsky.blogspot.com 5. Switch DNS of www.thebigbigsky.net to point to the new site on hostgator.com 6. On hostgator.com, setup permanent redirect 301 of www.thebigbigsky.net to point to personaldevelopmetnwithxyz.com by following the tutorial mentioned here - http://www.blogbloke.com/migrating-redirecting-blogger-wordpress-htaccess-apache-best-method/ Questions: 1. Will it have major impact on the current google pagerank or SEO of thebigbigsky.net? As the site is not that popular, we assumed that the impact would not be a major one. 2. Is the domain personaldevelopmentwithxyz.com considered too long? (For SEO etc) 3. Steps c.4 and c.5 above - Will this work for our case? 4. How about the subdomain - chinese.thebigbigsky.net? We would like keep it as separate blog with the domain e.g. chinese.personaldevelopmentwithxyz.com 5. We added "facebook comments" to the existing post on www.thebigtbigsky.net and would not want to lose it. Will the comments still be there after we moved to the new domain? 6. Any better idea to do it? :) Thank you very much! regards, -chan

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• CentOS 6.5 proxy bypass/no_proxy not working

  - by Naruto Uzumaki

  I am running CentOS 6.5 on my desktop. I've set the Network Proxy using the network proxy application provided under Preferences. I've also set the following exceptions: localhost,127.0.0.0/8,172.16.0.0/12,192.168.0.0./16 But whenever I am using wget (I'm testing the proxy settings using using wget) then wget tries to connect to the proxy for private addresses, but wget localhost works fine and doesn't use the proxy. I also removed all the proxy settings and set the proxy in the shell: export http_proxy="<proxy_url>:<port>" export https_proxy="<proxy_url>:<port>" export no_proxy="localhost,127.0.0.0/8,172.16.0.0/12,192.168.0.0./16" It work when I use the command wget <external_url> or wget localhost but fails when I use the command wget <private address from the $no_proxy variable>. I also tried setting the variables in Ubuntu 14.04 also and facing the same issue. Regards,

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• CentOS listen to everything on the wire

  - by Poni

  I know there's a native command on linux that will output (to stdout) every "event" related to a certain network interface (be it eth0 etc'). Like there's tail -f <file> to listen on file changes.. I just can't find it. I want to see all events, incoming packets, even dropped ones. At lowest level possible. In every protocol (TCP, UDP etc'). I think WireShark is a bit too big for this as I need something very simple just to see the events, it's for testing. What's the command?

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• Powershell and long-running external tools?

  - by leeand00

  I'm trying to compact a MS-Access database using JetComp.exe using a powershell script. Here is the operative lines: # 4. Run JetComp LogWrite("Begin: Running JetComp") .\JETCOMP.EXE -src: $srcDB -dest: $dstDB | Out-Null #Run this command and wait for it to finish... IfErrorExit("Error Compacting Database") LogWrite("End: Running JetComp") The JETCOMP.EXE program seems to complete long before it is actually finished and the $dstDB ends up being smaller than the compact should even make it. Initially ($srcDB) it's about 1.8 GB and by the time the command finishes it's about 300,000 kb (about 0.29 gb) that's a pretty long way off from 1.8 gb which when compacted manually ends up being about 1.6 gb. Is there some sort of timeout I don't know about in powershell scripts? P.S. I know that when running JETCOMP.EXE manually, that the system often detects it as "not responding" even though it's actually getting the job done, and waiting long enough will allow it to complete.

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• Clusterware 11gR2 &ndash; Setting up an Active/Passive failover configuration

  - by Gilles Haro

  Oracle is providing a large range of interesting solutions to ensure High Availability of the database. Dataguard, RAC or even both configurations (as recommended by Oracle for a Maximum Available Architecture - MAA) are the most frequently found and used solutions. But, when it comes to protecting a system with an Active/Passive architecture with failover capabilities, people often thinks to other expensive third party cluster systems. Oracle Clusterware technology, which comes along at no extra-cost with Oracle Database or Oracle Unbreakable Linux, is - in the knowing of most people - often linked to Oracle RAC and therefore, is seldom used to implement failover solutions. Oracle Clusterware 11gR2  (a part of Oracle 11gR2 Grid Infrastructure)  provides a comprehensive framework to setup automatic failover configurations. It is actually possible to make "failover-able'", and then to protect, almost any kind of application (from the simple xclock to the most complex Application Server). Quoting Oracle: “Oracle Clusterware is a portable cluster software that allows clustering of single servers so that they cooperate as a single system. Oracle Clusterware also provides the required infrastructure for Oracle Real Application Clusters (RAC). In addition Oracle Clusterware enables the protection of any Oracle application or any other kind of application within a cluster.” In the next couple of lines, I will try to present the different steps to achieve this goal : Have a fully operational 11gR2 database protected by automatic failover capabilities. I assume you are fluent in installing Oracle Database 11gR2, Oracle Grid Infrastructure 11gR2 on a Linux system and that ASM is not a problem for you (as I am using it as a shared storage). If not, please have a look at Oracle Documentation. As often, I made my tests using an Oracle VirtualBox environment. The scripts are tested and functional on my system. Unfortunately, there can always be a typo or a mistake. This blog entry does not replace a course around the Clusterware Framework. I just hope it will let you see how powerful it is and that it will give you the whilst to go further with it...  Note : This entry has been revised (rev.2) following comments from Philip Newlan. Prerequisite 2 Linux boxes (OELCluster01 and OELCluster02) at the same OS level. I used OEL 5 Update 5 with an Enterprise Kernel. Shared Storage (SAN). On my VirtualBox system, I used Openfiler to simulate the SAN Oracle 11gR2 Database (11.2.0.1) Oracle 11gR2 Grid Infrastructure (11.2.0.1)   Step 1 - Install the software Using asmlib, create 3 ASM disks (ASM_CRS, ASM_DTA and ASM_FRA) Install Grid Infrastructure for a cluster (OELCluster01 and OELCluster02 are the 2 nodes of the cluster) Use ASM_CRS to store Voting Disk and OCR. Use SCAN. Install Oracle Database Standalone binaries on both nodes. Use asmca to check/mount the disk groups on 2 nodes Use dbca to create and configure a database on the primary node Let's name it DB11G. Copy the pfile, password file to the second node. Create adump directoty on the second node.   Step 2 - Setup the resource to be protected After its creation with dbca, the database is automatically protected by the Oracle Restart technology available with Grid Infrastructure. Consequently, it restarts automatically (if possible) after a crash (ex: kill -9 smon). A database resource has been created for that in the Cluster Registry. We can observe this with the command : crsctl status resource that shows and ora.dba11g.db entry. Let's save the definition of this resource, for future use : mkdir -p /crs/11.2.0/HA_scripts chown oracle:oinstall /crs/11.2.0/HA_scripts crsctl status resource ora.db11g.db -p > /crs/11.2.0/HA_scripts/myResource.txt Although very interesting, Oracle Restart is not cluster aware and cannot restart the database on any other node of the cluster. So, let's remove it from the OCR definitions, we don't need it ! srvctl stop database -d DB11G srvctl remove database -d DB11G Instead of it, we need to create a new resource of a more general type : cluster_resource. Here are the steps to achieve this : Create an action script :  /crs/11.2.0/HA_scripts/my_ActivePassive_Cluster.sh #!/bin/bash export ORACLE_HOME=/oracle/product/11.2.0/dbhome_1 export ORACLE_SID=DB11G case $1 in 'start')   $ORACLE_HOME/bin/sqlplus /nolog <<EOF   connect / as sysdba   startup EOF   RET=0   ;; 'stop')   $ORACLE_HOME/bin/sqlplus /nolog <<EOF   connect / as sysdba   shutdown immediate EOF   RET=0   ;; 'clean')   $ORACLE_HOME/bin/sqlplus /nolog <<EOF   connect / as sysdba   shutdown abort    ##for i in `ps -ef | grep -i $ORACLE_SID | awk '{print $2}' ` ;do kill -9 $i; done EOF   RET=0   ;; 'check')    ok=`ps -ef | grep smon | grep $ORACLE_SID | wc -l`    if [ $ok = 0 ]; then      RET=1    else      RET=0    fi    ;; '*')      RET=0   ;; esac if [ $RET -eq 0 ]; then    exit 0 else    exit 1 fi   This script must provide, at least, methods to start, stop, clean and check the database. It is self-explaining and contains nothing special. Just be aware that it must be runnable (+x), it runs as Oracle user (because of the ACL property - see later) and needs to know about the environment. Also make sure it exists on every node of the cluster. Moreover, as of 11.2, the clean method is mandatory. It must provide the “last gasp clean up”, for example, a shutdown abort or a kill –9 of all the remaining processes. chmod +x /crs/11.2.0/HA_scripts/my_ActivePassive_Cluster.sh scp  /crs/11.2.0/HA_scripts/my_ActivePassive_Cluster.sh   oracle@OELCluster02:/crs/11.2.0/HA_scripts Create a new resource file, based on the information we got from previous  myResource.txt . Name it myNewResource.txt. myResource.txt  is shown below. As we can see, it defines an ora.database.type resource, named ora.db11g.db. A lot of properties are related to this type of resource and do not need to be used for a cluster_resource. NAME=ora.db11g.db TYPE=ora.database.type ACL=owner:oracle:rwx,pgrp:oinstall:rwx,other::r-- ACTION_FAILURE_TEMPLATE= ACTION_SCRIPT= ACTIVE_PLACEMENT=1 AGENT_FILENAME=%CRS_HOME%/bin/oraagent%CRS_EXE_SUFFIX% AUTO_START=restore CARDINALITY=1 CHECK_INTERVAL=1 CHECK_TIMEOUT=600 CLUSTER_DATABASE=false DB_UNIQUE_NAME=DB11G DEFAULT_TEMPLATE=PROPERTY(RESOURCE_CLASS=database) PROPERTY(DB_UNIQUE_NAME= CONCAT(PARSE(%NAME%, ., 2), %USR_ORA_DOMAIN%, .)) ELEMENT(INSTANCE_NAME= %GEN_USR_ORA_INST_NAME%) DEGREE=1 DESCRIPTION=Oracle Database resource ENABLED=1 FAILOVER_DELAY=0 FAILURE_INTERVAL=60 FAILURE_THRESHOLD=1 GEN_AUDIT_FILE_DEST=/oracle/admin/DB11G/adump GEN_USR_ORA_INST_NAME= GEN_USR_ORA_INST_NAME@SERVERNAME(oelcluster01)=DB11G HOSTING_MEMBERS= INSTANCE_FAILOVER=0 LOAD=1 LOGGING_LEVEL=1 MANAGEMENT_POLICY=AUTOMATIC NLS_LANG= NOT_RESTARTING_TEMPLATE= OFFLINE_CHECK_INTERVAL=0 ORACLE_HOME=/oracle/product/11.2.0/dbhome_1 PLACEMENT=restricted PROFILE_CHANGE_TEMPLATE= RESTART_ATTEMPTS=2 ROLE=PRIMARY SCRIPT_TIMEOUT=60 SERVER_POOLS=ora.DB11G SPFILE=+DTA/DB11G/spfileDB11G.ora START_DEPENDENCIES=hard(ora.DTA.dg,ora.FRA.dg) weak(type:ora.listener.type,uniform:ora.ons,uniform:ora.eons) pullup(ora.DTA.dg,ora.FRA.dg) START_TIMEOUT=600 STATE_CHANGE_TEMPLATE= STOP_DEPENDENCIES=hard(intermediate:ora.asm,shutdown:ora.DTA.dg,shutdown:ora.FRA.dg) STOP_TIMEOUT=600 UPTIME_THRESHOLD=1h USR_ORA_DB_NAME=DB11G USR_ORA_DOMAIN=haroland USR_ORA_ENV= USR_ORA_FLAGS= USR_ORA_INST_NAME=DB11G USR_ORA_OPEN_MODE=open USR_ORA_OPI=false USR_ORA_STOP_MODE=immediate VERSION=11.2.0.1.0 I removed database type related entries from myResource.txt and modified some other to produce the following myNewResource.txt. Notice the NAME property that should not have the ora. prefix Notice the TYPE property that is not ora.database.type but cluster_resource. Notice the definition of ACTION_SCRIPT. Notice the HOSTING_MEMBERS that enumerates the members of the cluster (as returned by the olsnodes command). NAME=DB11G.db TYPE=cluster_resource DESCRIPTION=Oracle Database resource ACL=owner:oracle:rwx,pgrp:oinstall:rwx,other::r-- ACTION_SCRIPT=/crs/11.2.0/HA_scripts/my_ActivePassive_Cluster.sh PLACEMENT=restricted ACTIVE_PLACEMENT=0 AUTO_START=restore CARDINALITY=1 CHECK_INTERVAL=10 DEGREE=1 ENABLED=1 HOSTING_MEMBERS=oelcluster01 oelcluster02 LOGGING_LEVEL=1 RESTART_ATTEMPTS=1 START_DEPENDENCIES=hard(ora.DTA.dg,ora.FRA.dg) weak(type:ora.listener.type,uniform:ora.ons,uniform:ora.eons) pullup(ora.DTA.dg,ora.FRA.dg) START_TIMEOUT=600 STOP_DEPENDENCIES=hard(intermediate:ora.asm,shutdown:ora.DTA.dg,shutdown:ora.FRA.dg) STOP_TIMEOUT=600 UPTIME_THRESHOLD=1h Register the resource. Take care of the resource type. It needs to be a cluster_resource and not a ora.database.type resource (Oracle recommendation) .   crsctl add resource DB11G.db  -type cluster_resource -file /crs/11.2.0/HA_scripts/myNewResource.txt Step 3 - Start the resource crsctl start resource DB11G.db This command launches the ACTION_SCRIPT with a start and a check parameter on the primary node of the cluster. Step 4 - Test this We will test the setup using 2 methods. crsctl relocate resource DB11G.db This command calls the ACTION_SCRIPT  (on the two nodes)  to stop the database on the active node and start it on the other node. Once done, we can revert back to the original node, but, this time we can use a more "MS$ like" method :Turn off the server on which the database is running. After short delay, you should observe that the database is relocated on node 1. Conclusion Once the software installed and the standalone database created (which is a rather common and usual task), the steps to reach the objective are quite easy : Create an executable action script on every node of the cluster. Create a resource file. Create/Register the resource with OCR using the resource file. Start the resource. This solution is a very interesting alternative to licensable third party solutions. References Clusterware 11gR2 documentation Oracle Clusterware Resource Reference Clusterware for Unbreakable Linux Using Oracle Clusterware to Protect A Single Instance Oracle Database 11gR1 (to have an idea of complexity) Oracle Clusterware on OTN   Gilles Haro Technical Expert - Core Technology, Oracle Consulting   

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• Sendmail is refusing connection after configuring SMTP relay

  - by coder

  I'm setting up sendmail on my home computer to use with my webserver. I've set it to use my SMTP server provided by my hosting company. If I use the following command, it works sendmail -Am -t -v and then I enter the to and from emails. But if I try the following, it does not work. sendmail -v [email protected] < test.txt The TO email is the same as in the earlier command, but in this case I haven't specified a FROM e-mail, which I think is the problem. My guess is that it's sending the mail from user@localhost causing the smtp server to reject it. If so, how do I make it send from [email protected]?

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• forwarding port 3306 on macosx in order to connect to a remote mysql db

  - by Jonathan Mayhak

  I'm on macosx 10.6.2 trying to connect to ubuntu server 8.04.1 at linode. ssh -L 127.0.0.1:3306:[[remote ip]]:3306 user@server -N I want to set up ssh tunneling so that I can access a remote mysql server. First of all, I'm told bind: Address already in use. This is only after I've tried the command before. How do I manually close a port forwarding session? Second, when I change the command to be ssh -L 127.0.0.1:3310:[[remote ip]]:3306 user@server -N (I changed the local port to listen on). I'm told channel 1: open failed: connect failed: Connection refused when I try to connect to the mysql server via mysql workbench or sequel pro. To connect through mysql workbench I use the following settings: host: 127.0.0.1 port: 3310 (if 3306 is in use) username: mysql username password: mysql password database: I don't put anything in

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• Problems installing rails on Ubuntu 12.04. Rails gems library is empty

  - by Woho87

  I got some problem installing rails on Ubuntu 12.04. I have rails working on my Ubuntu for a little time. But for some reason I uninstall rails. When I decided to install it again with sudo gem install rails . The command rails -v doesn't work. When I run the command sudo gem install rails there is no error occurring just a message that saying: Successfully installed rails-3.2.6 I look at the folder /usr/lib/ruby/gems/1.8/gems/rails-3.2.6 and it is completely empty? I wonder how I can fix this problem?

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• Why does "quickly share --ppa share" abort with a "can't create" error?

  - by desgua

  I can not figure out what I am doing wrong. The package builds ok with quickly package, I could submit it, but I can not update my ppa. Here is what I got: desgua@desguai7:~/quickly/sbk$ quickly share --ppa sbk Get Launchpad Settings Launchpad connection is ok ..........An error has occurred when creating debian packaging ERROR: can't create or update ubuntu package ERROR: share command failed Aborting Edit The name of my ppa was wrong, but even using ppa:desgua/sbk still doesn't work: desgua@desguai7:~/quickly/sbk$ quickly share --ppa ppa:desgua/sbk Get Launchpad Settings Traceback (most recent call last): File "/usr/share/quickly/templates/ubuntu-application/share.py", line 101, in launchpad = launchpadaccess.initialize_lpi() File "/usr/lib/python2.7/dist-packages/quickly/launchpadaccess.py", line 91, in initialize_lpi allow_access_levels=["WRITE_PRIVATE"]) File "/usr/lib/python2.7/dist-packages/launchpadlib/launchpad.py", line 539, in login_with credential_save_failed, version) File "/usr/lib/python2.7/dist-packages/launchpadlib/launchpad.py", line 359, in _authorize_token_and_login service_root, cache, timeout, proxy_info, version) File "/usr/lib/python2.7/dist-packages/launchpadlib/launchpad.py", line 198, in __init__ credentials, service_root, cache, timeout, proxy_info, version) File "/usr/lib/python2.7/dist-packages/lazr/restfulclient/resource.py", line 460, in __init__ self._wadl = self._browser.get_wadl_application(self._root_uri) File "/usr/lib/python2.7/dist-packages/lazr/restfulclient/_browser.py", line 299, in get_wadl_application response, content = self._request(url, media_type=wadl_type) File "/usr/lib/python2.7/dist-packages/lazr/restfulclient/_browser.py", line 242, in _request str(url), method=method, body=data, headers=headers) File "/usr/lib/python2.7/dist-packages/lazr/restfulclient/_browser.py", line 211, in _request_and_retry url, method=method, body=body, headers=headers) File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1414, in request (response, new_content) = self._request(conn, authority, uri, request_uri, method, body, headers, redirections, cachekey) File "/usr/lib/python2.7/dist-packages/launchpadlib/launchpad.py", line 126, in _request LaunchpadOAuthAwareHttp, self)._request(*args) File "/usr/lib/python2.7/dist-packages/lazr/restfulclient/_browser.py", line 130, in _request redirections, cachekey) File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1196, in _request (response, content) = self._conn_request(conn, request_uri, method, body, headers) File "/usr/lib/python2.7/dist-packages/httplib2/__init__.py", line 1138, in _conn_request raise ServerNotFoundError("Unable to find the server at %s" % conn.host) httplib2.ServerNotFoundError: Unable to find the server at api.launchpad.net ERROR: share command failed Aborting Any ideas? How could I troubleshot this error?

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