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  • How to install (old) packages for Ubuntu 9.04?

    - by wchrisjohnson
    Based on some excellent feedback by Mark here (http://serverfault.com/questions/285598/should-i-clone-a-physical-server-to-create-a-vm-for-a-staging-server), today I was able to use the vmware converter to clone my production server for a staging server. However the nic won't come up no matter what I do. I attempted to inistall vmware tools, as I suspect that the fact that it is not installed might prevent the nic from working. (I have the nic set as a vmxnet3 card in the vm settings). The install failed because there were several dependencies missing as well as the Linux headers. Given that Ubuntu 9.04 has been EOL'd, the packages I need to install to get the vmware tools to install are no longer available. I doubt the ubuntu 9.04 install CD has the packages on it. What are my options? I'd rather not upgrade the version of Ubuntu yet, as the point of the vm right now is to maintain parity with the production server. Might I have better luck resetting the driver to use vmxnet2 instead of the vmxnet3? Thanks in advance! Chris

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  • apache chokes after 300 connections

    - by john titus
    We have an apache webserver in front of Tomcat hosted on EC2, instance type is extra large with 34GB memory. Our application deals with lot of external webservices and we have a very lousy external webservice which takes almost 300 seconds to respond to requests during peak hours. During peak hours the server chokes at just about 300 httpd processes. ps -ef | grep httpd | wc -l =300 I have googled and found numerous suggestions but nothing seems to work.. following are some configuration i have done which are directly taken from online resources. I have increased the limits of max connection and max clients in both apache and tomcat. here are the configuration details: //apache <IfModule prefork.c> StartServers 100 MinSpareServers 10 MaxSpareServers 10 ServerLimit 50000 MaxClients 50000 MaxRequestsPerChild 2000 </IfModule> //tomcat <Connector port="8080" protocol="org.apache.coyote.http11.Http11NioProtocol" connectionTimeout="600000" redirectPort="8443" enableLookups="false" maxThreads="1500" compressableMimeType="text/html,text/xml,text/plain,text/css,application/x-javascript,text/vnd.wap.wml,text/vnd.wap.wmlscript,application/xhtml+xml,application/xml-dtd,application/xslt+xml" compression="on"/> //Sysctl.conf net.ipv4.tcp_tw_reuse=1 net.ipv4.tcp_tw_recycle=1 fs.file-max = 5049800 vm.min_free_kbytes = 204800 vm.page-cluster = 20 vm.swappiness = 90 net.ipv4.tcp_rfc1337=1 net.ipv4.tcp_max_orphans = 65536 net.ipv4.ip_local_port_range = 5000 65000 net.core.somaxconn = 1024 I have been trying numerous suggestions but in vain.. how to fix this? I'm sure m2xlarge server should serve more requests than 300, probably i might be going wrong with my configuration.. The server chokes only during peak hours and when there are 300 concurrent requests waiting for the [300 second delayed] webservice to respond. Please help..

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  • vmware player won't run on CentOS due to missing /dev/vmmon, what could be the problem?

    - by Graphics Noob
    So I've tried installing vmware player 3.1.4 and 3.1.3 and both times had the same problem, when I try to load a VM I get the error "Could not open /dev/vmmon". When I ls /dev/ I can see there is no "vmmon" device present. When I try running: sudo /etc/init.d/vmware start I get the output: Starting VMware services: VMware USB Arbitrator [ OK ] Virtual machine monitor [FAILED] Virtual machine communication interface [ OK ] VM communication interface socket family [ OK ] Blocking file system [ OK ] Virtual ethernet [FAILED] which shows that the Virtual Machine Monitor fails to load. I tried following the advice on this site and ran vmware-modconfig --console --install-all I notice during the compilation there are no errors, but at the end I get the message: Starting VMware services: VMware USB Arbitrator [ OK ] Virtual machine monitor [FAILED] Virtual machine communication interface [ OK ] VM communication interface socket family [ OK ] Blocking file system [ OK ] Virtual ethernet [ OK ] Unable to start services Out of curiousity I tried: sudo /sbin/insmod /lib/modules/2.6.18-238.9.1.el5xen/misc/vmmod.ko But got the error message: insmod: error inserting 'vmmon.ko': -1 Invalid module format I have a feeling this may be the root of the problem, but I don't know what could be causing it or how to fix it.

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  • 1 PC, 2 consoles (as in 2 monitors, keyboards and mice)

    - by ciuly
    I have this desire to "kill 2 birds with one shot". Currently, I have 1 server running round the clock, 1 laptop that runs about 8 hours a day, 7 days a week, and a desktop that runs about the same length of time. All 3 are ... old, to say the least. So there is a great need to upgrade (well, the server might handle its job for another year or so, but that only depends on how much time I have to put it to "work"). Now, I'm "dreaming" of only one PC. I'm thinking vmware's ESX. So there will be a VM for the server, a VM for the "laptop" and one for the "desktop". And obviously I'll have to somehow "link" a set of monitor/keyboard/mouse with one of the laptop/desktop VMs. The server doesn't need such things, obviously (it doesn't have them at this moment either). Is something like this possible? ESX is not a requirement, it's just something I found that answers part of my problems, but there still remains the 2 KVM set that needs connecting and "linking" to appropriate VM. Why I would want to do this? well, first of all, it's much cheaper to upgrade one PC than 3. Then, the power consumption is obviously lower. Plus the extra space.Plus it allows me to better separate networks and services. Thanks.

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  • 1 PC, 2 consoles (as in 2 monitors, keyboards and mice)

    - by ciuly
    I have this desire to "kill 2 birds with one shot". Currently, I have 1 server running round the clock, 1 laptop that runs about 8 hours a day, 7 days a week, and a desktop that runs about the same length of time. All 3 are ... old, to say the least. So there is a great need to upgrade (well, the server might handle its job for another year or so, but that only depends on how much time I have to put it to "work"). Now, I'm "dreaming" of only one PC. I'm thinking vmware's ESX. So there will be a VM for the server, a VM for the "laptop" and one for the "desktop". And obviously I'll have to somehow "link" a set of monitor/keyboard/mouse with one of the laptop/desktop VMs. The server doesn't need such things, obviously (it doesn't have them at this moment either). Is something like this possible? ESX is not a requirement, it's just something I found that answers part of my problems, but there still remains the 2 KVM set that needs connecting and "linking" to appropriate VM. Why I would want to do this? well, first of all, it's much cheaper to upgrade one PC than 3. Then, the power consumption is obviously lower. Plus the extra space.Plus it allows me to better separate networks and services. Thanks.

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  • Windows thumbnail preview with JNA (Java)

    - by rukoche
    W32API.HWND targetHwnd = User32.INSTANCE.FindWindow('SunAwtFrame', 'Frame') W32API.HWND sourceHwnd = User32.INSTANCE.FindWindow('triuiScreen', 'EVE') W32API.HANDLE thumbnailH = new W32API.HANDLE() NativeLibrary dwm = NativeLibrary.getInstance('dwmapi') dwm.getFunction('DwmRegisterThumbnail').invoke(targetHwnd, sourceHwnd, thumbnailH) gives me # A fatal error has been detected by the Java Runtime Environment: # # EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x70f34bee, pid=7208, tid=7364 # # JRE version: 6.0_18-b07 # Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode, sharing windows-x86 ) # Problematic frame: # C [DWMAPI.DLL+0x4bee] I have a feeling I'm doing it completely wrong, but digging in documentation got me nowhere.

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  • Controling virtualbox internet access?

    - by HandyGandy
    I am finally going through the process of moving my XP into a vbox (host linux). The thing is that I am migrating a virtually clean install. So aside from the occasional antivirus scan, I want to make sure that my XP is not sending malware data (keystoke.logs, spam etc. ) out silently ( and thus having picked up some virus ). To that end I want to limit XP to contacting my LAN and a few internet sites. ( mainly sites that require proprietary windows only software to access, AV sites and Windows update ). I want XP to only access preapproved addresses. If it is trying to contact a nonapproved address, I want it somehow logged and access restricted until I allow access. I also don't want to have to decide whether to allow access to a site at my leisure. To keeps things clear let me give an example: I start my vbox/XP ( which I call MYXP) running on my linux box ( called MYLINUX connecting to the net through a linksys wrt54g ) and connects via samba to my LAN ( since my LAN seems to be possessed of every evil thing, it's address is 192.168.666. ). At the moment my configuration is set so that I allow MYXP to access 192.168.666 and www.MYANTIVIRUS_UPDATES.com and www.MS_UPDATES.com. Then on the VM I start a program which tries to make a connection to www.playmygame.com . www.playmygame.com is on my preapproved list so the connection goes through. Later I check attempted accesses and discover that it also tried to connect to www.mygame_high_scores.com I figure this is OK so I add www.mygame_high_scores.com to my approved list. Later, I again check address and discover that my VM/XP tried to access www.mygame_steals_your_identity.com. I do some checking and discover the address is registered to someone in Kiev, Nigeria. Since this doesn't sound kosher to me, I replace the MYXP VM with one that was backed up before I installed mygame. I remove www.playmygame.com and www.mygame_high_scores.com from my access list for MYXP. It should acomplish this with little overheard. When I am not running the VM ideally it should not have any overhead. Suggestions?

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  • Fatal error by Java runtime environment

    - by siri
    I am executing a junit test case I got the following error, A fatal error has been detected by the Java Runtime Environment: Internal Error (classFileParser.cpp:3174), pid=2680, tid=2688 Error: ShouldNotReachHere() JRE version: 6.0_18-b07 Java VM: Java HotSpot(TM) Client VM (16.0-b13 mixed mode windows-x86 ) Can any body please suggest the solution to resolve

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  • spymemcached - is it possible to disable the logging system?

    - by Kico Lobo
    Hi, we are using the spymemcached memcached client but we didn't discovered how we could disable the logging system. How could we at runtime change the current logging system to something like log4j or sl4j? Notice: We could pass some VM arguments, but the problem is: we can't change our server configuration. Is it possible to pass these VM arguments at runtime? If possible, how could we do that?

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  • Out of memory error

    - by Rahul Varma
    Hi, I am trying to retrieve a list of images and text from a web service. I have first coded to get the images to a list using Simple Adapter. The images are getting displayed the app is showing an error and in the Logcat the following errors occur... 04-26 10:55:39.483: ERROR/dalvikvm-heap(1047): 8850-byte external allocation too large for this process. 04-26 10:55:39.493: ERROR/(1047): VM won't let us allocate 8850 bytes 04-26 10:55:39.563: ERROR/AndroidRuntime(1047): Uncaught handler: thread Thread-96 exiting due to uncaught exception 04-26 10:55:39.573: ERROR/AndroidRuntime(1047): java.lang.OutOfMemoryError: bitmap size exceeds VM budget 04-26 10:55:39.573: ERROR/AndroidRuntime(1047): at android.graphics.BitmapFactory.nativeDecodeStream(Native Method) 04-26 10:55:39.573: ERROR/AndroidRuntime(1047): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:451) 04-26 10:55:39.573: ERROR/AndroidRuntime(1047): at com.stellent.gorinka.AsyncImageLoaderv.loadImageFromUrl(AsyncImageLoaderv.java:57) 04-26 10:55:39.573: ERROR/AndroidRuntime(1047): at com.stellent.gorinka.AsyncImageLoaderv$2.run(AsyncImageLoaderv.java:41) 04-26 10:55:40.393: ERROR/dalvikvm-heap(1047): 14600-byte external allocation too large for this process. 04-26 10:55:40.403: ERROR/(1047): VM won't let us allocate 14600 bytes 04-26 10:55:40.493: ERROR/AndroidRuntime(1047): Uncaught handler: thread Thread-93 exiting due to uncaught exception 04-26 10:55:40.493: ERROR/AndroidRuntime(1047): java.lang.OutOfMemoryError: bitmap size exceeds VM budget 04-26 10:55:40.493: ERROR/AndroidRuntime(1047): at android.graphics.BitmapFactory.nativeDecodeStream(Native Method) 04-26 10:55:40.493: ERROR/AndroidRuntime(1047): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:451) 04-26 10:55:40.493: ERROR/AndroidRuntime(1047): at com.stellent.gorinka.AsyncImageLoaderv.loadImageFromUrl(AsyncImageLoaderv.java:57) 04-26 10:55:40.493: ERROR/AndroidRuntime(1047): at com.stellent.gorinka.AsyncImageLoaderv$2.run(AsyncImageLoaderv.java:41) 04-26 10:55:40.594: INFO/Process(584): Sending signal. PID: 1047 SIG: 3 Here's the coding in the adapter... final ImageView imageView = (ImageView) rowView.findViewById(R.id.image); AsyncImageLoaderv asyncImageLoader=new AsyncImageLoaderv(); Bitmap cachedImage = asyncImageLoader.loadDrawable(imgPath, new AsyncImageLoaderv.ImageCallback() { public void imageLoaded(Bitmap imageDrawable, String imageUrl) { imageView.setImageBitmap(imageDrawable); } }); imageView.setImageBitmap(cachedImage); .......... ........... ............ //To load the image... public static Bitmap loadImageFromUrl(String url) { InputStream inputStream;Bitmap b; try { inputStream = (InputStream) new URL(url).getContent(); BitmapFactory.Options bpo= new BitmapFactory.Options(); bpo.inSampleSize=2; b=BitmapFactory.decodeStream(inputStream, null,bpo ); return b; } catch (IOException e) { throw new RuntimeException(e); } // return null; } Please tell me how to fix the error....

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  • Reuse controls inside a usercontrol

    - by Lawrence A. Contreras
    I have a UserControl UserControl1 and a button inside the UserControl1. And I have a UserControl1ViewModel that has an ICommand property for the button. Using this command I need to call a method outside(from other VMs or VM of the MainWindow) the VM. What is the best practice for this?

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  • Development Environment for Testing MySQL Replication

    - by Dave Morris
    Is there an easy way to setup an environment on one machine (or a VM) with MySQL replication? I would like to put together a proof of concept of MySQL replication with one Master write instance and two slave instances for reads. I can see doing it across 2 or 3 VMs running on my computer, but that would really bog down my system. I'd rather have everything running on the same VM. What's the best way to proof out scalability solutions like this in a local dev environment? Thanks for your help, Dave

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  • eclipse debugging problem with SWT and/or XPCOM on ubuntu

    - by jspeshu
    every time i tried to debug some php application i get this error message Unhandled event loop exception XPCOM error -2147467262 i found a log like this one in my home direcorty A fatal error has been detected by the Java Runtime Environment: SIGSEGV (0xb) at pc=0x00007f232a4331b5, pid=4151, tid=139787135117072 JRE version: 6.0_18-b18 Java VM: OpenJDK 64-Bit Server VM (16.0-b13 mixed mode linux-amd64 ) Derivative: IcedTea6 1.8.1 Distribution: Ubuntu 10.04 LTS, package 6b18-1.8.1-0ubuntu1 Problematic frame: C [libc.so.6+0x391b5] exit+0x35

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  • Can I copy a cross compiler tool chain between systems (I did before)?

    - by Jamie
    I tested fairly extensively with Ubuntu 10.04 Beta 2 Server in a VM, and was able to simply copy (read tar x) a cross compiled tool chain from an Ubuntu 8.10 VM. I created the tar myself, which is essentially a lot of stuff in \usr\local. Now that I've got a bare metal installation of Ubuntu 10.04 proper, the copy isn't working. In particularly, I'm getting the error: $ arm-linux-gcc -bash: /usr/local/bin/arm-linux-gcc: No such file or directory I've got the systems side by side in SSH windows ... any suggestions?

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  • Difference in Java versions

    - by Polppan
    Are there any differences between these two java versions. If there are any differences how can I have the version java version "1.4.2" because that is what I have in server. 1) java version "1.4.2_06" Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_06-b03) Java HotSpot(TM) Client VM (build 1.4.2_06-b03, mixed mode) 2) java version "1.4.2" Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2) Classic VM (build 1.4.2, J2RE 1.4.2 IBM AIX build ca142-20090307

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  • How to Turn Off Annoying Eclipse Console on Windows

    - by engfer
    So I change the -vm argument for eclipse.exe using the elcipse.ini settings file, and now there's an annoying command prompt console (even if I remove the -vm value). Does anyone know how to turn off the console so I only have the eclipse GUI and not the console window? /cry NOTE: On MS WIndows 7

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  • How to turn off Eclipse console on Windows

    - by engfer
    So I change the -vm argument for eclipse.exe using the eclipse.ini settings file, and now there's an command prompt console (even if I remove the -vm value). Does anyone know how to turn off the console so I only have the eclipse GUI and not the console window? I'm running MS Windows 7.

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  • VMware convert to Virtualbox?

    - by TechSavvySmurf
    I downloaded a Kali Linux ISO VMware image thinking that it would be able to run in Virtualbox as well. However, this only seems to be the case with .vmdk files, and my image is a .vm.tar.gz file. Virtualbox does not recognize it as a valid ISO file, and I am not sure how to convert it. The entire thing is kali-linux-1.0-i386-gnome-vm.tar.gz The goal is to be able to run this in a Virtualbox, is there any way to convert this from VMware to Virtualbox?

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  • VirtualBox - Public Static IP for a Debian Guest on a Dedicated Server

    - by user86296
    Goal: I want to run a Debian-squeeze-Guest in VirtualBox and it's own public static ip. I found tons of threads about this topic, but all in all I'm now trying for 10 hours (reading the manual, the forums, trying to learn about networking concepts & commands) to give a Guest his own public static ip (so that the Guest is similar to a vServer you can order from a hosting company), but wasn't able to. Since I'm a big noob as far as networking stuff is concerned, I'm probably doing something wrong.(please bear with me :-) ) Situation: VirtualBox 4.0.10 (headless no gui) is running on a dedicated Debian-Server, the Guest OS is Debian as well. The server has a static ip and I ordered an additional ip for a VM. Problem description: Upto now I was able to use NAT to access the VM from the outside and to setup an internal network between several Guests and all of this worked very well. When setting NIC 1 to bridged and configuring a public static ip on the guest, the guest was unpingable. (neither from outside, nor from the host) I could connect to the guest via the internal network, from another vm, though. ( VBoxManage controlvm VMGuest nic1 bridged eth0 ) ( configuration attempt of static-ip on the guest '/etc/network/interfaces' is below) Please let me know what I'm doing wrong, or what I can try to get it to work, or if you need more info. I think I've read that with a current VirtualBox-version for bridged networking no special host-configuration is necessary, is that accurate, or might that be the problem? Additional Info Info I got from the hosting company about the additional IP Please note that you can use the IP address only for this server. IP: 46.4.xx.xx Gateway: 46.4.xx.xx Mask: 255.255.255.248 VBoxManage showvminfo VMGuest |less ... NIC 1: MAC: 080027D72F7B, Attachment: Bridged Interface 'eth0', Cable connected: on, Trace: off (file: none), Type: 82540EM, Reported speed: 0 Mbps, Boot priority: 0 NIC 2: MAC: 080027B03B75, Attachment: Internal Network 'InternalNet1', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0 NIC 3: disabled (...rest is disabled) cat /etc/network/interfaces on the Host-machine # Loopback device: auto lo iface lo inet loopback # device: eth0 auto eth0 iface eth0 inet static address 46.4.xx.xx broadcast 46.4.xx.xx netmask 255.255.255.224 gateway 46.4.xx.xx post-up mii-tool -F 100baseTx-FD eth0 # default route to access subnet up route add -net 46.4.xx.xx netmask 255.255.255.224 gw 46.4.xx.xx eth0 cat /etc/network/interfaces on the Guest-VM # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback # The primary network interface allow-hotplug eth0 auto eth0 iface eth0 inet static address 46.4.xx.xx netmask 255.255.255.248 gateway 46.4.xx.xx auto eth1 iface eth1 inet dhcp ifconfig -a on the Guest shows the correct static ip for eth0 but the Guest is unreachable "over eth0" eth0 Link encap:Ethernet HWaddr 08:00:27:d7:2f:7b inet addr:46.4.xx.xx Bcast:46.4.xx.xx Mask:255.255.255.248 inet6 addr: fe80::a00:27ff:fed7:2f7b/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:21 errors:0 dropped:0 overruns:0 frame:0 TX packets:69 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:1260 (1.2 KiB) TX bytes:3114 (3.0 KiB) eth1 Link encap:Ethernet HWaddr 08:00:27:b0:3b:75 inet addr:192.168.10.3 Bcast:192.168.10.255 Mask:255.255.255.0 inet6 addr: fe80::a00:27ff:feb0:3b75/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:142 errors:0 dropped:0 overruns:0 frame:0 TX packets:92 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:15962 (15.5 KiB) TX bytes:14540 (14.1 KiB) Interrupt:16 Base address:0xd240 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:123 errors:0 dropped:0 overruns:0 frame:0 TX packets:123 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:25156 (24.5 KiB) TX bytes:25156 (24.5 KiB)

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  • Amazon EC2 Instance - m1.medium Ubuntu 12.04 - Started to crash three days ago

    - by Joy
    The environment: Amazon EC2 Instance - m1.medium Ubuntu 12.04 Apache 2.2.22 - Running a Drupal Site Using MySQL DB Server RAM info: ~$ free -gt total used free shared buffers cached Mem: 3 1 2 0 0 0 -/+ buffers/cache: 0 2 Swap: 0 0 0 Total: 3 1 2 Hard drive info: Filesystem Size Used Avail Use% Mounted on /dev/xvda1 7.9G 4.7G 2.9G 62% / udev 1.9G 8.0K 1.9G 1% /dev tmpfs 751M 180K 750M 1% /run none 5.0M 0 5.0M 0% /run/lock none 1.9G 0 1.9G 0% /run/shm /dev/xvdb 394G 199M 374G 1% /mnt The problem About two days ago the site started failing becaue the MySQL server was shut down by Apache with the following message: kernel: [2963685.664359] [31716] 106 31716 226946 22748 0 0 0 mysqld kernel: [2963685.664730] Out of memory: Kill process 31716 (mysqld) score 23 or sacrifice child kernel: [2963685.664764] Killed process 31716 (mysqld) total-vm:907784kB, anon-rss:90992kB, file-rss:0kB kernel: [2963686.153608] init: mysql main process (31716) killed by KILL signal kernel: [2963686.169294] init: mysql main process ended, respawning That states that the VM was occupying 0.9GB, but my Ram has 2GB free, so 1GB was still left free. I understand that in Linux applications can allocate more memory than physically available. I don't know if this is the problme, it's the first time that it has started to happen. Obviously, the MySQL server tries to restart, but there's no memory for it apparently and it won't restart. Here is its error log: Plugin 'FEDERATED' is disabled. The InnoDB memory heap is disabled Mutexes and rw_locks use GCC atomic builtins Compressed tables use zlib 1.2.3.4 Initializing buffer pool, size = 128.0M InnoDB: mmap(137363456 bytes) failed; errno 12 Completed initialization of buffer pool Fatal error: cannot allocate memory for the buffer pool Plugin 'InnoDB' init function returned error. Plugin 'InnoDB' registration as a STORAGE ENGINE failed. Unknown/unsupported storage engine: InnoDB [ERROR] Aborting [Note] /usr/sbin/mysqld: Shutdown complete I simply restarted the Mysql service. About two hours later it happened again. I restarted it. Then it happened again 9 hours later. So then I thought of the MaxClients parameter of apache.conf, so I went to check it out. It was set at 150. I decided to drop it down to 60. As so: <IfModule mpm_prefork_module> ... MaxClients 60 </IfModule> <IfModule mpm_worker_module> ... MaxClients 60 </IfModule> <IfModule mpm_event_module> ... MaxClients 60 </IfModule> Once I did that, I had the apache2 service restart and it all went smoothly for 3/4 of a day. Since at night the MySQL service shut down once again, but this time it wasn't killed by the Apache2 service. Instead it called the OOM-Killer with the following message: kernel: [3104680.005312] mysqld invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0, oom_score_adj=0 kernel: [3104680.005351] [<ffffffff81119795>] oom_kill_process+0x85/0xb0 kernel: [3104680.548860] init: mysql main process (30821) killed by KILL signal Now I'm out of ideas. Some articles state that the ideal thing to do is change the kernel behaviour with the following (include it to the file /etc/sysctl.conf ) vm.overcommit_memory = 2 vm.overcommit_ratio = 80 So no overcommits will take place. I'm wondering if this is the way to go? Keep in mind I'm no server administrator, I have basic knowldege. Thanks a bunch in advance.

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  • X server not starting up after new kernel compilation

    - by tech_learner
    I have compiled the Kernel on my 64-bit Debian XPS Studio 1340 Dell system. srikanth@debian:~ - 05:40:52 PM - $ uname -a Linux debian 2.6.32-5-amd64 #1 SMP Thu Mar 22 17:26:33 UTC 2012 x86_64 GNU/Linux Kernel version that I have used and compiled from kernel.org is 2.6.35.13 I have nvidia installed on old kernel. I got the old config and I used the same config to compile the new kernel. Everything went well and I got two debian packages ( image and headers ) which I have installed on my system. When I select the new kernel on the boot menu and I go into it, the X server is not starting up possibly because I have to "rebuild" ( not sure how to do that ) according to this link: http://www.linuxquestions.org/questions/slackware-14/x-server-not-starting-after-kernel-compilation-605265/ Can you suggest how to do the rebuild on nvidia module so that I can start x ( without seeing any blank screen or error saying nvidia module is missing ) ? PS: The link that I have used to compile the kernel is https://help.ubuntu.com/community/Kernel/Compile#Alternate_Build_Method:_The_Old-Fashioned_Debian_Way

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  • How to use iptables to forward all data from an IP to a Virtual Machine

    - by jro
    OK, in an attempt to get some response, a TL;DR version. I know that the following command: iptables -A PREROUTING -t nat -i eth0 --dport 80 --source 1.1.1.1 -j REDIRECT --to-port 8080 ... will redirect all traffic from port 80 to port 8080. The problem is that I have to do this for every port that is to be redirected. To be future-proof, I want all ports for an IP to be redirected to a different (internal) IP, so that if one might decide to enable SSH, they can directly connect without worrying about iptables. What is needed to reliable forward all traffic from an external IP, to an internal IP, and vice versa? Extended version I've scoured the internet for this, but I never got a solid answer. What I have is one physical server (HOST), with several virtual machines (VM) that need traffic redirected to them. Just getting it to work with a single machine is enough for now. The VM's run under VirtualBox, and are set to use a host-only adapter (vboxnet0). Everything seems to work, but it is greatly lagging. Both the host (CentOS 5.6) and the guest (Ubuntu 10.04) machine are running Linux. What I did was the following: Configure the VM to have a static IP in the network of the vboxnet0 adapter. Add an IP alias to the host, registering to the dedicated (outside) IP. Setup iptables to allow traffic to come through (via sysctl). Configure iptables to DNAT and SNAT data from a given IP address to the internal address. iptables commands: sudo iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT sudo iptables -A POSTROUTING -t nat -j MASQUERADE iptables -t nat -I PREROUTING -d $OUT_IP -I eth0 -j DNAT --to-destination $IN_IP iptables -t nat -I POSTROUTING -s $IN_IP -o eth0 -j SNAT --to-source $OUT_IP Now the site works, but is really, really slow. I'm hoping I missed something simple, but I'm out of ideas for now. Some background info: before this, the site was working with basic port forwarding. E.g. port 80 was mapped to port 8080 using iptables. In VirtualBox (having the network adapter configured as NAT), a port forwarding the other way around made things work beautifully. The problem was twofold: first, multiple ports needed to be forwarded (for admin interfaces, https, ssh, etc). Second, it only allowed one IP address to use port 80. To resolve things, multiple external IP addresses are used for different (sub)domains. Likewise, the "VirtualBox" network will contain the virtual machines: DNS Ext. IP Adapter VM "VirtalBox" IP ------------------------------------------------------------------ a.example.com 1.1.1.1 eth0:1 vm_guest_1 192.168.56.1 b.example.com 2.2.2.2 eth0:2 vm_guest_2 192.168.56.2 c.example.com 3.3.3.3 eth0:3 vm_guest_3 192.168.56.3 And so on. Put simply, the goal is to channel all traffic from a.example.com to vm_guest_1 (of put differently, from 1.1.1.1 to 192.168.56.1). And achieve this with an acceptable speed :).

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