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  • how to change VMWare 1.x guest boot order

    - by bo gusman
    I have 4 VMs on a linux host, call them A, B, C, D running on Z. I really don't care when A and B come up, but I would like to make sure that D comes up before C. I believe that in VMWare 2.x it's possible to change the boot order. Is this possible in 1.x as well? Is this done in /etc/vmware/vm-list? I see that there are a number of vms listed there, including some that have long since been deleted. Thanks! Bo

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  • Webserver: Performance impact when storing session files on /dev/shm

    - by GetFree
    I have a website runing on a typical setup: Linux, Apache, PHP, MySQL. However, what's not typical about it, is that it's getting tons of traffic (400,000+ visits a day) and so, efficiency is becoming more and more important to me. I'm constantly looking for things I could optimize and, right now, my attention is focused on PHP's session files. There's a hell lot of session files constantly being read and created on the /tmp directory. So my question is: Is it a good idea to store the session files in /dev/shm (tmpfs) in order to speed things up a little bit??

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  • Commercial NAS RAID1 disks moved to Software Raid system?

    - by Rolnik
    I've got a couple of commercial NAS boxes and I'm wondering if they (ReadyNas duo, DLink DNS-323) or any other NAS is suitable for having their RAIDed disks moved to a software-based NAS. To be specific, I'm a big fan of the (largely) Debian-based Ubuntu. Can the aforementioned NAS drives be migrated to Ubuntu (e.g. using the mdadm Linux command)? Secondly, is there any commercial NAS that can be migrated over? Incidentally, here is a link to somebody who succeeded in a migration: http://www.linuxquestions.org/questions/slackware-14/moving-raid1-drives-into-computer-with-same-md-numbers-862312/ My specific scenario I'd like to prepare for, is the eventual (sudden) death of one of the NAS motherboards.

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  • Browser-based Operating System

    - by Ross Peoples
    I have a bunch of touchscreen machines that I want to display a webpage on and have users interact with the webpage via the touchscreen. Right now, this is done with a full-blown OS with a browser set to run at startup. I think maybe the ideal solution is to use a Linux-based OS that boots up, starts X, then starts a web browser (Chrome, Firefox, or whatever) in full screen mode. What kind of options do I have? I really want to avoid using a full-blown OS like I do now. It looks unprofessional and takes a while to boot up. I was thinking maybe Chrome OS or something, but I wouldn't know how to set it up for my purposes, since it's still designed to be used as a desktop OS instead of a kiosk-type OS.

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  • Centralize proxy settings for all the application on my workstation

    - by Leonardo
    As a consultant, I used to work at different clients premises. It happens frequently that most of them has specific proxy settings, but not all the application I have installed on my laptop get settings from system preferences, for allowing me to change settings in one place. Some of them bypass system preferences completely, proposing their own mask for entering specific data such as username, host and password. I am looking for a convenient and not much intrusive way to share a common access point on which I could enter data, and maybe persist them. An 'automatic' switching would be ideal, for example based on some network identification, but there's no problem for me to enter data manually. I am not an IT expert, but to explain myself clearly, I am looking for a solution like .pac file is for browsers. Relevant OS I am using are MacOSX and Linux (Ubuntu).

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  • DHCPOFFER delay VLAN

    - by john883
    I have configured two VLANs [ 15 and 16 ] and a trunkport on a Cisco Catalyst 2960. The trunkport is connected to eth2 on a Linux server The server is configured to support VLAN's and the interfaces eth2.15 eth2.16 is configured with ip addresses on two different subnet. dhcp3-server is running on the same server and hands out IP-addresses to the VLANs. When connecting a client to a port that is configured in ex. VLAN 15 and requesting a IP-address, i experience a long delay before recieving a DHCPOFFER, around 30 seconds or so, the client needs to send a DHCPDISCOVER about five times but will always recieve a DHCPOFFER. Any suggestion why this delay is happening?

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  • VMware Server guest systems are extremely slow with IO load on host (Ubuntu 8.04)

    - by Dennis G.
    We are experiencing performance issues with a VMware Server 2.x installation on an Ubuntu 8.04 host. When the host system is generating IO load (for example, copying large files as part of a backup operation), the guests (also Ubuntu 8.04) become extremely unresponsive and slow (simple Apache HTTP requests taking 5 seconds instead of the usual 200ms). We tried optimizing various aspects of the VMs, but the issue remains. Is there a known bug with VMware performance under linux if host IO load is high? Is there a way to fix this? Is this only an issue with Ubuntu systems, or have you seen it on other systems before? Thanks!

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  • mount dev, proc, sys in a chroot environment?

    - by Patrick
    I'm trying to create a Linux image with custom picked packages. I followed the guide here http://www.olpcnews.com/forum/index.php?topic=4766.0 However, when I tried to install some packages, it failed to configure due to missing the proc, sys, dev directories. So, I learned from other places that I need to "mount" the host proc, ... directories to my chroot environment. Though, I saw two syntax and am not sure which one to use. In host machine: mount --bind /proc <chroot dir>/proc and another syntax (in chroot envrionment): mount -t proc none /proc Which one should I use, and what are the difference? Edit: What I'm trying to do is to hand craft the packages I'm going to use on an XO laptop, because compiling packages takes really long time on the real XO hardware, if I can build all the packages I need and just flash the image to the XO, I can save time and space.

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  • /etc/profile.d and "ssh -t"

    - by petersohn
    I wanted to run a script on a remote machine. The simple solution is this: ssh remote1 some-script This works until the remote script doesn't want to connect to another remote machine (remote2) which requires interactive authentication, like tis one (remote2 is only reachable through remote1 in this case): ssh remote1 "ssh remote2 some-script" The solution for the problem is to use the -t option for ssh. ssh -t remote1 "ssh remote2 some-script" This works, but I get probems in case I use this (where some-script may execute further ssh commands): ssh -t remote1 some-script I found that some environment variables are not set which are set when I don't use the -t option. These envrionment variables are set in scripts from /etc/profile.d. I guess that these scripts are not run for some reason if using the -t option, but are run if I don't use it. What's the reason of this? Is there any way to work around it? I am using SUSE linux (version 10).

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  • Radeon hd 6570 black screen

    - by Sho
    I got some problem with new graphic card. Every time I use AMD Catalyst drivers on Windows or Linux, screen repeatedly goes black. This usually shows u when i open new cards in a browser, resize a window or run a program. Card runs smoothly on basic drivers but this means low resolution. 1940x1080 is native for my monitor so it causes a lot of problems. I've got a 600W Deus G1, so the power is not the problem. Maybe its a silly question, but would going form a vga cable to hdmi help to improve this situation? If not, can it be caused by slow processor or old mainboard? Im getting kinda confused about this whole thing...

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  • How to stop ethernet interface in bridge configuration from obtaining IP address via DHCP

    - by user71061
    Hi! I'm trying to configure openvpn in bridging configuration. First step of doing this requires creating bridge interface (br0), bridging together physical ethernet interface (eth0) and logical tap0 interface. This can be done with simple script but I want to use less popular approach, configuring bridge interface entirely via /etc/network/interfaces file (on Debian linux). So I have removed all eth0 definitions form /etc/network/interfaces and replaced if with following br0 definition: auto br0 iface br0 inet static pre-up openvpn --mktun --dev tap0 address 10.0.0.1 netmask 255.255.255.0 bridge_ports eth0 tap0 post-down openvpn --rmtun --dev tap0 This works as I expected, but there is only one problem: interface eth0 is part of bridge interface br0 AND it also receive it's own IP address from my DHCP server (located on same LAN where eth0 is connected). My questions is: how to stop eth0 interface from obtaining it's own IP address? (It should only be part of br0 bridge).

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  • monitor just what's going on -on a firewall

    - by bbutle01
    I have this little snapgear firewall. It's a little purpose built box running a custom linux, SH4 processor @240 Mhz, 64MB of ram. Basically how close we are to capacity is a mystery to me. I know I can run top and see the status of all the processes, but how can I see just how much of the processor is going to passing data... and how to estimate when I'm going to need to upgrade, and by tweaking iptables rules, how does that help/hurt the processor. suggestions?

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  • how to change VMWare 1.x guest boot order

    - by bo gusman
    I have 4 VMs on a linux host, call them A, B, C, D running on Z. I really don't care when A and B come up, but I would like to make sure that D comes up before C. I believe that in VMWare 2.x it's possible to change the boot order. Is this possible in 1.x as well? Is this done in /etc/vmware/vm-list? I see that there are a number of vms listed there, including some that have long since been deleted. Thanks! Bo

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  • How to rename everything matching a certain string in a folder

    - by lostiniceland
    Hello Everyone I am running Linux and I have some basic console knowledge but my current problem is quite difficult and I dont know how to achieve this. I want/need to rename everything within a folder that matches a given string. By everything I mean folders/files content within a file content in hidden files Basically I want to refactor a Java-project. Sure, I could use Eclipse to handle the replacing, but this leaves out the folders or resources outside of my workspace. I was thinking of a script that could do the job for me but this seems rather tricky. For instance when it comes to folder-/file-rename I want to replace only the part of the name that matches my string, the rest should remain untouched. Maybe someone already has something like this in his/her script-collection :-) Thanks in advance Marc

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  • Is it my motherboard?

    - by jarodrussell
    Early this week my home server (a Linux machine) threw a kernel panic. Yesterday is happened a couple of times. Then all of a sudden, when I plugged a USB stick in to run a memory test, the monitor stopped coming on. Now whenever I turn it on, the system gets power...I heard the drives spin, I see the processor fan spin, and the hard drive light comes on...but nothing happens. I put a video card in the AGP slot, but still nothing. The light on the power button that usually comes on stopped coming on. I took the memory out to see if it would beep, but nothing beeped. It's like it's getting power, but it's not coming on. Does this sound like a motherboard problem to anyone else? I think it is, but a second opinion would be greatly appreciated. Thanks.

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  • apache server mapping to tomcat issues

    - by Karthick
    I am working on the flex application. Back end is spring/Hibernate. The application is working fine in my local XP system. When i am trying to deploy in the server i'm facing the issue. The issue is how to map the java in apache when i am by passing the apache & works in tomcat my application is working good. But not in the apache.. This can be fixed by mapping the java in apache. I don't know how to map this. can u help me out My server properties Linux lumiin.ch 2.6.18-028stab095.1 i686 Regards Karthick

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  • How to get a maximum file size of VZFS parition?

    - by Nulldevice
    I have a VPS hosting with a VZFS file system. How can I determine maximum file size of VZFS partition? UPD: Free space (or total space) is not what i need. Sometimes file cannot occupy a hole partition volume - fat16 with 2Gb limit is a good example. I need to use a large database file (say, 64Gb) and so I need to know if a file system of VPS hosting will cope with it. It is easy to calculate for an ext3 filesystem using tune2fs, but VPS uses VSFS by Virtuozzo, and it is documented bad. Is it any generic way to calculate maximum file size for some filesystem in linux?

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  • breaking mdadm raid and moving to NTFS

    - by daveyt
    I'm running Ubuntu 8 something and my data is on a mirrored pair of 1TB disks formatted as ext3, and the RAID is via mdadm. I want to move to Windows 7 (yeah yeah I know but Linux aint doing it for me at the moment) and migrate the disks to NTFS. My plan is: Break the MDADM RAID (by failing one disk logically) Format the 'failed' disk as NTFS Copy data from the RAID array to the NTFS disk (dont care about perms) Install Windows, (new separate non RAid disk) and my data disk is available. I've researched this and it seems the easiest way. I dont have another disk to back up to so I think this is my only way. Can anyone see a better/easier way?

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  • how to take a backup of ubuntu system as it is?

    - by rajat
    I have installed ubuntu(dual boot) using wubi(Windows-based UBuntu Installer) installer for windows , and since then i am working in linux now it has many projects with many dependencies now i want to install the same ubuntu to other machines ,so that i don't need to install Ubuntu first and then install each and every project and it's dependencies . There is a folder called ubuntu in my windows driver which was created by wubi and which has all the ubuntu stuff . PS: Other machines have only windows 7 installed and have same configuration . Is there any way to install the save ubuntu i am using to the other machines ?

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  • Howto maintain an EXT3 filesystem

    - by Reinoud van Santen
    Lately I had several servers which encountered a write error on an EXT3 filesystem and as a result of that remounted the filesystem read-only. Understandably on a production server this causes severe problems. On a reboot the filesystem where fixed but on large partitions this takes a lot of time. After the filesystem was fixed, correcting several errors, the server runs well again. What can I do to minimize the rate at which this happens? I can't seem to find much information on periodically checking the filesystem(s) on a running server. Is it possible to change the way in which EXT3 / the system handles write errors? What would be a sane solution. All servers which this is regarding to are running CentOS Linux 5.4 or 5.5.

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  • Build of expect v5.43 fails with Tcl v8.5.8

    - by E Brown
    Hi, I'm trying to build "expect" from source v5.43, using Tcl built from source v8.5.8 on Redhat Linux. Tcl built fine, but my attempt to build expect fails. I run configure, then make, which gives me the error: `TCL_REG_BOSONLY' undeclared when compiling exp_inter.c. I did some digging around, and found the TCL_REG_BOSONLY value defined in Tcl file tclInt.h, but there is no #include for that in the exp_inter.c file. My question is, can "expect" be built from source with Tcl version 8.5.8, or does it require an earlier version? Version 5.43 is the latest for "expect" that I can find, and the current Tcl version is 8.5.8, but something doesn't seem compatible between the two. Any help appreciated.

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  • How to rename everything matching a certain string in a folder

    - by lostiniceland
    Hello Everyone I am running Linux and I have some basic console knowledge but my current problem is quite difficult and I dont know how to achieve this. I want/need to rename everything within a folder that matches a given string. By everything I mean folders/files content within a file content in hidden files Basically I want to refactor a Java-project. Sure, I could use Eclipse to handle the replacing, but this leaves out the folders or resources outside of my workspace. I was thinking of a script that could do the job for me but this seems rather tricky. For instance when it comes to folder-/file-rename I want to replace only the part of the name that matches my string, the rest should remain untouched. Maybe someone already has something like this in his/her script-collection :-) Thanks in advance Marc

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  • Modern open source NIDS/HIDS and consoles?

    - by MattC
    Years back we set up an IDS solution by placing a tap in front of our exterior firewall, piping all the traffic on our DS1 through an IDS box and then sending the results off to a logging server running ACiD. This was around 2005-ish. I've been asked to revamp the solution and expand on it and looking around, I see that the last release of ACiD was from 2003 and I can't seem to find anything else that seems even remotely up-to-date. While these things may be feature complete, I worry about library conflicts, etc. Can anyone give me suggestions for a Linux/OpenBSD based solution using somewhat modern tools? Just to be clear, I know that Snort is still actively developed. I guess I'm more in the market for a modern open-source web console to consolidate the data. Of course if people have great experiences with IDS' other than Snort I'm happy to hear about it.

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  • Kernel appears to have no modules

    - by George Reith
    Useful info: OS: CentOS 5.8 final Kernel: 2.6.32-042stab056.8 My kernel came prebuilt with the server, I don't know anything about kernels and not a lot about linux however as far as I do know I should have some modules loaded by the kernel. I came across this problem because I am unable to run iscsi as it is expecting certain modules to be loaded. lsmod returns nothing. depmod -a returns: WARNING: Couldn't open directory /lib/modules/2.6.32-042stab056.8: No such file or directory FATAL: Could not open /lib/modules/2.6.32-042stab056.8/modules.dep.temp for writing: No such file or directory I have rebooted and nothing has changed. Does anyone know why this is happening?

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  • Is it possible to modify a color scheme and windows decorations in Xfce4?

    - by Juhele
    just testing PCLinuxOS Phoenix XFCE Edition 2011-07 which I would like to install on my grandpa's PC instead older PCLOS 2009 with KDE3 (which is almost impossible to upgrade). The PC is relatively older one (Sempron 2200+ CPU, MSI K7N2GM2 board with integrated GeForce 440MX series graphics, 1GB RAM and 80GB IDE HDD) and I thought that it is too weak for KDE4. I already used Xfce in the past (Sam Linux 2006 and 2007), but in new Xfce4 I am not able to somehow change the windows color scheme and the windows decorations - the settings manager offers me switching between preinstalled themes but it is possible to modify them with some GUI?

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