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• How to backup data on debian vps to dropbox?

  - by IBr

  I have really simple private VPS with some webpages and music server. I want to backup some configs and some scripts to dropbox or similar service. Server has no gui (except simple ssh X forwarding, which is neither convenient for constant usage and does not provide full desktop) everything is controlled through ssh. So my question would is it possible to setup dropbox client for command line use? How? Is there any alternatives for dropbox, which would have command line clients? Also is it possible to incorporate backup into script for cron job?

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• Have an iPad's viewable area visible on your computer monitor for remote web-meeting training?

  - by MikeN

  I want to demo the usage of my iPad on my computer screen so that I can transmit it to other people during a training session using a web conference tool (like dimdim.com, gotomeeting.com, fuzemeeting.com, etc...) Is there a way to stream an iPad's display to a computer so it would be visible in such a screen casting software? My current ad-hoc solution for this would be to use a webcam to livecast me using a physical (real life) iPad and broadcast that to other users for training. This is undesirable due to the difficulty in really seeing the iPad well. So I'm hoping someone has a way to do: 1) Video output the iPad's display to my computer screen. 2) Emulate an iPad with a installed app (not having the source code) on the screen.

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• Installing ruby 1.9.1 on OS X with RVM, getting error I can't make sense of

  - by Pselus

  I'm trying to update my ruby install on Leopard to at least 1.9.1. I found a tutorial that tells me how to do it with RVM and I get as far as downloading, configuring and compiling the version I want, but during the compile I get errors. When checking the make.error.log file this is the message I get: [2010-11-07 13:43:44] make main.c: In function ‘objcdummyfunction’: main.c:19: warning: implicit declaration of function ‘objc_msgSend’ main.c: At top level: main.c:19: warning: ‘objcdummyfunction’ defined but not used eval.c: In function ‘ruby_cleanup’: eval.c:139: warning: passing argument 1 of ‘ruby_init_stack’ discards qualifiers from pointer target type gc.c: In function ‘garbage_collect_with_gvl’: gc.c:597: warning: cast from pointer to integer of different size w: illegal option -- L usage: w [hi] [user ...] make: [libruby.1.9.1.dylib] Error 1 (ignored) readline.c: In function ‘username_completion_proc_call’: readline.c:1159: error: ‘username_completion_function’ undeclared (first use in this function) readline.c:1159: error: (Each undeclared identifier is reported only once readline.c:1159: error: for each function it appears in.) make[1]: *** [readline.o] Error 1 make: *** [mkmain.sh] Error 1 I have no idea what any of that means. Help?

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• Tools for analyzing performance of SQL Server/Express?

  - by Adam Crossland

  The application that I have customized and continue to support for my client is seeing dramatic performance problems in the field. Simple queries on rather small datasets take over a minute when I would expect them to complete with sub-second times. My current theory is that SQL Server Express 2005 is too limited for the rather non-trivial demands being made of it, but I am not sure how to get about gathering data that I can use to either prove my point or allow me to move on to finding another cause. Can anyone point me toward some tools that would allow me to analyze the load on this database? Information such as simultaneous connections, execution times of individual queries, memory usage, heck just any profiling data at all would be a help. Many thanks.

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• How to access Windows Registry from DOS

  - by SEARAS

  How to access Windows Registry from DOS? I need to access registry from DOS, while I boot from DOS bootable disk. I've searched all the internet, and found only Offline NT Password and Registry Editor, which can not be used in DOS, as I understand. Also I've found RegView (from many mirrors), which isn't working too (I've tried many instructions). Is there any easy-in-usage tool, like reg.exe, which is able to load registry hives, so that I can change registry values?? Or any working instructions ?? Note: I already have a bootable drive, which can read/write to NTFS drives. Thanks in advance!

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• Nagios: Which services should I monitor on different roles of servers?

  - by Itai Ganot

  I've started working in a new workplace and my first task is to build a Nagios server and configure it to monitor the servers in the network. Since I'm starting from scratch I wanted to hear from you, experienced users, which checks should I configure for each role? For example, there are some basic checks which I run on each Linux machine I monitor: SSH, Ping, Load, Current Users, Swap Usage, etc... Now my question is, which specific checks should I run for a DataBase server, for a Networking Switch, for Httpd servers? (I currently monitor how many httpd processes are running) Thanks in advance

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• A home router for torrents, gaming, webbing and detailed QoS [closed]

  - by Cawas

  I want to plug in an external HD on it to torrent up never ending (mostly for seeding), with lowest priority. It should even automatically completely stop if it disturbs my net usage, and go back in later. And I want to be able to give gaming (or my computer) the highest priority, because of its ping requirements. It should be above even of Skype and any voip, which also have high priority. Web surfing and "youtubing" comes in the middle - it won't matter much if it delays a second or two. Finally, interface as simple as possible. It's fine if it's command line setup, but it needs to have a GUI. What are my options for routers / firmwares as described? Maybe Gargoyle? Or even Time Capsule? It seems to me good old DD-WRT isn't the best option out there anymore. I wonder what else could cover these grounds.

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• Network adapters reliability

  - by casey_miller

  Can you help me with understanding of reliability of network adapters. Most of the time servers do have at least 2 NIC's bonded to provide sort of a HA for it. So in case of one NIC fails, the second would still do the job. I wonder which factors work when you use network adapters. I know that, the most important and weakest part of any computer system is: storage (i.e HDD). but how reliable actually network adapters are? There are more expensive ones, and cheaper adapters. In which cases do they actually fail? In what circumstances. May it be a intensive usage of them Time when it's on In your experience how often you found yourself changing NIC's due to their fail? Or just what's the typical lifetime of commodity NIC's? thanks.

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• CLI-Based monitoring tool for KVM

  - by Pinnacle

  I am developing a scheduler for running VMs on KVM. The scheduling has over-commitment of resources like memory and CPU. For this, I need a CLI-based monitoring tool that keeps me giving information about the resource usage of each VM, because it might be the case that due to over-provisioning of resources, VMs on a particular host are running very slowly depending on the benchmarks/programs each VM is running, and then I need to migrate a VM to another host and so on. I looked into libvirt-based tools like collects, MUNIN, Nagios-vert, etc.( http://libvirt.org/apps.html#monitoring ) I also looked into Ubuntu utility perf-kvm ( http://manpages.ubuntu.com/manpages/maverick/man1/perf-kvm.1.html ) I want to ask which CLI-based would be recommended by the community so that I can make a automated scheduler that takes care of the above situation.

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• Missing disk space in Windows XP

  - by Jørn Schou-Rode

  On my mother's Lenovo laptop, Windows XP claims that the hard drive is almost full. According to the properties window, 52.7 out of 55.2 GB is in use: By deleting temp files from Internet Explorer, System Restore, Recycle bin, Windows Update, System Cleanup, I managed to free up about one GB. That's still 50 GB in use, which still is a lot more than I expected. Hence, I gave good old WinDirStat a spin, and here's the output: It might be hard to read here, but the first line says that the total amount of disk space in use on drive C is 24.3 GB. So Windows claims usage of 52.7 GB and WinDirStat can only account for 24.3 GB. Where is the other half of that disk space being used? I hope someone has an answer, or some tricks or tips to do further research. UPDATE: The laptop in question has an SSD hard drive. I am aware that these disk (at least the earlier ones) have a limited life-time. Could the symptoms described be caused by wear and tear on the SSD?

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• Media center consumes all available memory when attempting to play music off of a server

  - by RCIX

  I have Windows 7 Ultimate, and recently, when i try to play a song off of my Twonky Media Server/Windows Media Connect (based on an HP WHS with an Atom), it plays choppily. When i open Resource Monitor, it shows that after ordering the music to play, memory usage rapidly spikes to consume most, if not all, of the available memory on my system (excluding a couple hundred megabytes in standby). Why does it do this and is there anything i can do to stop it? Edit: it happens when I attempt to browse the server's music, not just when i play music. Edit 2: the "ehshell" process is what consumes the memory, appears to me something specific to media center. Moreover, the ehshell process doesn't die in this case. Edit 3: It only happens when browsing my Twonky library, and not my Windows Media Connect.

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• low speed web application, Server problem or Application

  - by Ashian

  Hi, I have a web application written by asp.net (c#) sql server 2005. we host it on 2 dedicated server ( IIS and SQL server ) From some month ago , in some days of week we have many reports about speed issue. we have some other application on this server using same database. when we have speed problem all aplication on these server have this problem, but applications on other server in same data center work correctly. ram and cpu usage are ok. how can I check that the problem related to internet connection or my application design? which parameters must be checked. Some other information In applications users can upload several files to server , each file up to 3 MB. we use a sql web admin application, on same server that has same problem, this is a standard application which work perfectly on other servers. Thanks

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• Tomcat startup.sh doesn't work

  - by OMG Ponies

  I've just installed Tomcat 6.0.20 (per Jira documentation recommendation) on RedHat EL 5 Server, and attempts to use: bin] # ./startup.sh ...result in: Using CATALINA_BASE: /opt/software/jira-tomcat-6.0.20 Using CATALINA_HOME: /opt/software/jira-tomcat-6.0.20 Using CATALINA_TMPDIR: /opt/software/jira-tomcat-6.0.20/temp Using JRE_HOME: /etc/alternatives/jre Usage: catalina.sh ( commands ... ) commands: debug Start Catalina in a debugger ... version What version of tomcat are you running? I've edited the catalina.sh file to add: echo $0 echo $1 ...and I see: catalina.sh start ...etc when I use: ./catalina.sh start Why does catalina.sh not use the parameter?

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• iPad Synching with Exchange 2007 is Losing Contacts

  - by Christopher

  We have a user who has an iPad that is synching to our Exchange 2007 SP1 Server. She is reporting that her contacts are being "eaten", which we take to mean are being slowly deleted over time. This user also has a BlackBerry that is synching through a Blackberry Enterprise Server. I have two questions - 1) Has anyone run into this situation of "self-deleting" contacts or does anyone have any idea what is going on? 2) Can anyone give insight into usage of iPads in their Active Directory/Exchange environment?

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• Open Source Visualization and Dashboard Software

  - by helios

  I am working on an open source Application Performance Monitoring (APM) software and looking for a visualization tool with dashboard capabilities. I came across Graphite which looks pretty good but wondering if there is anything better out there before I settle down with that tool. Here's the list of features I am interested in: Must-Have Open Source license API to submit real time data Web-based visualization interface Persistence - file or database Nice-To-Have Dashboard Capabilities: Allow users to select a few metrics (CPU, Heap Usage, # of Active Users etc.) and place them on a single page for easier monitoring. Any suggestions?

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• Disable .net completely in a IIS6 Application Pool

  - by David L.-Pratte

  we're managing some web sites for our clients on our servers, some running Windows Server 2003 R2 and others running 2008 R2. In Windows Server 2008 R2, we can disable completely .NET framework usage for some application pools, which is great since most of our websites are still using classic ASP. After some issues with classic ASP applications being configured to run as ASP.NET 4 in a CLR 2.0 pool, we wanted to do the same thing in IIS6 - that is, have application pools without any .NET support. Is this a supported scenario in IIS6? Thanks

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• ASP.NET MVC hosting recommendations

  - by chris

  I'm looking for recommendations for hosting an asp.net MVC application. Obviously, we need to be able to have access to configure IIS directly - I'd prefer not to have to go thru a control panel. The web server needs to have a dedicated IP, since some clients will be accessing it via IP. We need at least a SQLServer 2005 database, ideally on the same box. Load and usage will be pretty low, so a virtual machine will probably be fine. Does any one have any recommendations that meet the above constraints?

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• How to interpret IOZone results?

  - by homer5439

  Here are the resuts of running IOZone on an ext3 filesystem on an LVM volume residing on a SAN LUN (it was ran with 5 parallel processes). "Throughput report Y-axis is type of test X-axis is number of processes" "Record size = 4 Kbytes " "Output is in Kbytes/sec" " Initial write " 81628.55 " Rewrite " 83354.72 " Read " 115595.02 " Re-read " 119306.09 " Reverse Read " 47684.20 " Stride read " 10011.09 " Random read " 16751.27 " Mixed workload " 5659.77 " Random write " 1661.85 " Pwrite " 36030.83 Now this is all nice and dandy, but my question is: how do I know whether the values are as good as they could be or there is something to tweak (and if so, what?) The actual usage I will have for that Logical Volume is to act as virtual disk for a VM.

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• bind would not work unless allow-query is "any"

  - by adrianTNT

  I have this in /etc/named.conf, I commented the default values and set my own under it. My domain would not load in browser unless I set allow-query to "any", is this OK, what should I edit? If is localhost or 127.0.0.1; 10.0.1.0/24; domain would not load. I tried the 127.. thing because it mentioned it here: http://wiki.mandriva.com/en/Testing:Bind Bind version is 9.7.0-P2-RedHat-9.7.0-5.P2.el6_0.1 OS is CentOS 6.0. options { // listen-on port 53 { 127.0.0.1; }; listen-on port 53 { any; }; //listen-on-v6 port 53 { ::1; }; listen-on-v6 port 53 { any; }; directory "/var/named"; dump-file "/var/named/data/cache_dump.db"; statistics-file "/var/named/data/named_stats.txt"; memstatistics-file "/var/named/data/named_mem_stats.txt"; //allow-query { localhost; }; allow-query { any; }; recursion yes; dnssec-enable yes; dnssec-validation yes; dnssec-lookaside auto; /* Path to ISC DLV key */ bindkeys-file "/etc/named.iscdlv.key"; };

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• Configure static IPv6 on Ubuntu

  - by Charles Offenbacher

  I'm trying to configure IPv6 on a dedicated Ubuntu server. My provider gave me a "/64" (whatever that is - I'm still confused) of IPv6 addresses. However, when I try to use them, I can't ping anything. What do I do? :( # ping6 ipv6.google.com PING ipv6.google.com(vx-in-x63.1e100.net) 56 data bytes From fe80::219:d1ff:fefb:42d8 icmp_seq=1 Destination unreachable: Address unreachable From fe80::219:d1ff:fefb:42d8 icmp_seq=2 Destination unreachable: Address unreachable From fe80::219:d1ff:fefb:42d8 icmp_seq=3 Destination unreachable: Address unreachable --- ipv6.google.com ping statistics --- 3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 2014ms # tracepath6 ipv6.google.com 1?: [LOCALHOST] 0.025ms pmtu 1500 1: fe80::219:d1ff:fefb:42d8%eth0 2000.022ms !H Resume: pmtu 1500 # cat /etc/network/interfaces # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 64.***.***.*** netmask 255.255.255.248 gateway 64.***.***.*** iface eth0 inet6 static pre-up modprobe ipv6 address 2607:F878:1:***::1 netmask 64 gateway 2607:F878:1:***(same as address)::1 # ifconfig eth0 Link encap:Ethernet HWaddr 00:19:d1:fb:42:d8 inet addr:64.***.***.*** Bcast:64.***.***.*** Mask:255.255.255.248 inet6 addr: fe80::219:d1ff:fefb:42d8/64 Scope:Link inet6 addr: 2607:f878:1:***::1/64 Scope:Global UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:52451 errors:0 dropped:0 overruns:0 frame:0 TX packets:39729 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:6817761 (6.8 MB) TX bytes:6153835 (6.1 MB) Interrupt:41 Base address:0xc000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:166 errors:0 dropped:0 overruns:0 frame:0 TX packets:166 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:31714 (31.7 KB) TX bytes:31714 (31.7 KB)

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• ffmpeg encoding on QuadCore

  - by Gotys

  I am trying to push my server's CPU cores to the max, but no success. Encoding 2-pass style, set my "-threads" to 128 . When running 2nd pass , the CPU seems to be at 98% usage, but first pass run totally ignores "-threads" option. Using libx264 . Here is my preset: flags=+loop+mv4 cmp=256 partitions=+parti4x4+parti8x8+partp4x4+partp8x8+partb8x8 me_method=hex subq=7 trellis=1 refs=5 bf=3 flags2=+bpyramid+wpred+mixed_refs+dct8x8 coder=1 me_range=16 g=250 keyint_min=25 sc_threshold=40 i_qfactor=0.71 qmin=10 qmax=51 qdiff=4 Is there any reason why the 1st pass is not utilizing my CPUs ? Thank you in advance! This community has always been very kind to me.

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• ffmpeg encoding on QuadCore

  - by Gotys

  I am trying to push my server's CPU cores to the max, but no success. Encoding 2-pass style, set my "-threads" to 128 . When running 2nd pass , the CPU seems to be at 98% usage, but first pass run totally ignores "-threads" option. Using libx264 . Here is my preset: flags=+loop+mv4 cmp=256 partitions=+parti4x4+parti8x8+partp4x4+partp8x8+partb8x8 me_method=hex subq=7 trellis=1 refs=5 bf=3 flags2=+bpyramid+wpred+mixed_refs+dct8x8 coder=1 me_range=16 g=250 keyint_min=25 sc_threshold=40 i_qfactor=0.71 qmin=10 qmax=51 qdiff=4 Is there any reason why the 1st pass is not utilizing my CPUs ? Thank you in advance! This community has always been very kind to me.

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• VMWare Server :: VM set to 2gb RAM but vmware process shows 100mb physical, 1900mb virtual

  - by brad

  I've set up a VMWare instance to run CastIron Integration Appliance. I allocated 2gb of memory to the instance, assuming it would take this as physical memory (my server has 8gb total). When I view top however on the server, the vmware-vmx process has about 100m Resident memory and 1900m Virtual. Running CastIron it reports that the appliance often hits 50% memory usage. Does this mean I'm using 900mb of harddrive space as memory? I wanted VMWare to use 2gb of physical memory, no swap. Can anyone tell me how to achieve this? Setup Debian Lenny 5.0.3 VMWare Server 2.0.2

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• Network and log monitoring and vulnerability scanning

  - by user137799

  I am trying to find out if there is any application or service in UNIX that will - 1. Monitor network interfaces for bandwidth usage 2. When network flaps occur send out a e-mail. 3. When duplicate mac-addresses or loop occurs in network - send out alerts. 4. Do a network vulnerability scan and be able to detect utorrent application on our network. Need to know which linux distribution will be best to support that specific application Thanks

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• What is the effect on LVM snapshot size when a file block is rewritten with it's original contents?

  - by NevilleDNZ

  I'm exploring using LVM snapshot's to off site incremental archives from a snapshot "master" file system. In essence: simply copy across only the files on the "master" that have changed since the last incremental copy to the "archive". Then snapshot the "archive" to retain the incremental. I am a bit puzzled as to the block usage behaviour of the archive's own incremental snapshot. I'm expecting that LVM is not smart enough to know that the "file block" is actually unchanged, and the a new copy will be allocated and written for the fresh "archive" file system. Can anyone confirm this, or point me to a document/page that gives some hints? BTW: the OS hard disk cache, hard disk physical cache and hard disk itself also doesn't need to do any actual "disk writes" as the "disk block" likewise is unnecessary. Any pointers to discussion of this style of optimisation would also be ineresting.

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