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  • Ubuntu asking me to upgrade to natty narwhal?

    - by Ke
    I am wondering will it affect my server if I upgrade to the latest version. Anything I should be careful about? Also, im wondering what is an intelligent way to update a ubuntu server normally. Would you update every week for instance? also would you have lots of errors to handle with scripting systems like perl/cpan modules etc, since these are always tough to install anyway with compatibility issues? Cheers, K

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  • MySQL 5.1.34 on NFS w/NetApp

    - by shrisha
    Is this still a bad idea? I know older versions of MySQL performed poorly with NFS. I imagine the issue lies with the usage of fsnc() and/or O_DIRECT. If the issues are mostly resolved, are there common pitfalls/gotchas, specifically around a large (multiple tables with tens of millions of records) InnoDB database that may see up to 20-50 reads/sec

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  • debian/ubuntu locales and language settings

    - by AndreasT
    This self-answered question solves the following issues: locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory and some other locale related problems.

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  • How many reverse proxies (nginx, haproxy) is too many?

    - by Alysum
    I'm setting up a HA (high availability) cluster using nginx, haproxy & apache. I've been reading great things about nginx and haproxy. People tend to choose one or the other but I like both. Haproxy is more flexible for load balancing than nginx's simple round robin (even with the upstream-fair patch). But I'd like to keep nginx for redirecting non-https to https among other things right at the point of entry to the cluster. On the other hand, nginx is a lot faster for serving static contents and would reduce the load on the powerful apache which loves to eat a lot of RAM! Here is my planned setup: Load balancer: nginx listens on port 80/443 and proxy_forwards to haproxy on 8080 on the same server to load balance between the multiple nodes. Nodes: nginx on the node listens to requests coming from haproxy on 8080, if the content is static, serve it. But if it's a backend script (in my case PHP), proxy forward to apache2 on the same node server listenning on a different port number. Technically this setup works but my concerns are whether having the requests going through several proxies is going to slow down requests? Most of the requests will be PHP requests as the backends are services (which means groing from nginx - haproxy - nginx - apache). Thoughts? Cheers

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  • Routing protocols, distance vector vs link state

    - by Artem Barger
    I'm trying to figure out the differences(pros/cons) between two routing protocols approach and I would be great-full for any help, advice and explanation. As far I can say that it seems like distance vector is more static and more local based routing, since it doesn't know the network state whereas link state is more aware of current states therefore it seems more natural to use it over distance-vector, but I have a feeling like I'm missing something. And I would be glad to here about more aspects and different issues I have to consider while choosing one of them.

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  • CPU Benchmark - Set Load, usage spikes

    - by iulianchira
    I need a CPU benchmark to test the performance impact of various power management policies. I must be able to set the load (e.g. to get a relatively steady load of 20%-30%-60%) and to simulate usage spikes (set frequency of spikes). I would also like it to be scriptable so as to be able to change benchmark settings in an indirect manner.

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  • How do I troubleshoot computer dumps?

    - by KronoS
    Once I have a dump of a computer crash/freeze, what are some tools and steps to take in order to troubleshoot crash based off of the dump itself? I am looking for tools to isolate what processes or issues are causing the crash, and also good techniques in troubleshoot the actual dump itself. Once I've determined what the "troublesome" process has been, what do I do to troubleshoot the issue? For example if I determine process foo.exe or bar.dll etc, is the problematic file how do I determine what can be done?

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  • HP StorageWorks P4500 G2 Manager Management

    - by MDMarra
    According to the documentation, a management group should have an odd number of managers greater than 1. I have a four node SAN consisting of P4500 G2s. I plan on having two clusters with two nodes each in this management group, i.e.: -Managent_Group1 -Cluster1 -Node1 -Node2 -Cluster2 -Node3 -Node4 Are there any issues running standard managers on Node1, Node2, and Node3? After reading the documentation, I'm still unclear about whether or not cluster membership matters in quorum consistency, or if they don't matter at all.

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  • Possible to disable smart card PIN change in Windows 7?

    - by bobmagoo
    I'm looking for a way to disable the smart card PIN change ability provided with Windows 7's native minidriver. It doesn't allow us to enforce any PIN complexity requirements such that users could change their PIN to 000000 or blank without any issues so we'd like to disable that ability. I've been googling around and haven't found any way to do this, but perhaps someone has encountered a similar issue and found a resolution? A third party minidriver is the next step, but if we could do it without additional tools I'm all for it.

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  • Comcast SMC Port Forwarding Issue

    - by Zach Fedora
    I have a Comcast SMCD3G modem/router and I've been having issues getting the port to forward - When I check an online "open-port-checker" it says the port is forwarded/they can see the port on my IP. (1 Static IP is assigned to the modem) But when I try to access port 80 for example on a browser, it times out. Also when I try to remote desktop to the server (Windows Server 2008 R2) it doesn't work, yet canyouseeme.org says it is open. Any ideas as to what the problem could be?

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  • Shares on Hyper-V Host or Guest?

    - by Lazlow
    I'm about to deploy a Hyper-V Server, that will have 2 local drives: 250GB for VMs, 2TB for Shares. Does Hyper-V Server (standalone, not as a role) allow you to setup Network Shares? Or will I have to setup a VM with the 2TB drive allocated to it, for setting up the Shares? If Hyper-V supports Shares, would there be a performance benefit? The Shares will be used by both the VMs on the Hyper-V Server and other Servers within the Network.

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  • Is there anything to open .docx documents on Linux (Ubuntu) ?

    - by ereOn
    Hi, My mother has some serious issues using Windows (viruses, spywares, and so on) and I seriously think about setting up Ubuntu as a replacement. (That would ease my "job" as well) The only concern I have is, is there anything to edit .docx (or .xlsx, .pptx, ...) documents on Linux ? Last time I tried OpenOffice (was 3 years ago), it was only able to open "old" MS Office documents (.doc, .xls, ...). Thank you very much for your answers !

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  • Is it advisable to run Apache in a chroot jail?

    - by morpheous
    I have been advised by a sysadmin guy I know, to run Apache in a chroot jail, for increased security. I have the following questions: Is this advisable (i.e. are there any 'gotcha's that I need to be aware of) ? Does running Apache in a chroot jail affect its ability issues like performance and scalability? He also advised that I run my databases (mySQL and PostgreSQL), in separate chroot jails. Is this something that is often done in production systems

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  • OpenOffice 3 takes forever to open

    - by Joey Adams
    I'm on Fedora 14, and OpenOffice 3.3.0 takes a long time to open (about 30 seconds, sometimes less). It isn't a CPU or disk performance issue, it's just simply a very long delay before the program opens. It appears to be a frivolous network connection timing out. According to Wireshark, it tries to look up: dulcimer.(none) which fails, after which it tries to look up: dulcimer.(none).mylitestream.com (dulcimer is my hostname, and LiteStream is my ISP) Is there a way to work around this bug in OpenOffice?

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  • Using BIND as a Personal DNS Server on Windows XP

    - by Sam
    Hello, My ISP's DNS server is very crappy and I've been trying out various alternatives to it. I came across Treewalk ( http://ntcanuck.com/ ) and BIND, and decided to use Treewalk as it seemed easier. But it's performance hasn't been satisfactory. Can someone please guide me on how to setup BIND on my standalaone Windows XP 3 system which connects to the internet using PPPOE? (Note: I am aware about OpenDNS / Google / other public DNS servers but do not wish to use them).

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  • Open source server monitoring

    - by Webnet
    I'm running Ubuntu server and am looking or a server monitoring utility that is open source/free. We don't need any thing too fancy. Mainly we want to know when the server is offline or if any core services have issues. Preferably something that can send us text messages or emails would be great.

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  • HTTP Header Issue

    - by Josh
    We've been having weird issues with our web server. Sometimes when you click around you will get the http header in plain text on the web page. HTTP/1.1 200 OK Cache-Control: private Content-Type: text/html; charset=utf-8 Server: Microsoft-IIS/7.0 X-AspNet-Version: 2.0.50727 X-Powered-By: ASP.NET Date: Mon, 26 Oct 2009 21:43:57 GMT Content-Length: 13633 Anyone know why this would show up in the page content?

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  • how do you monitor your lamp server?

    - by ajsie
    i wonder how one can monitor a lamp server (ubuntu) on production. are there any standard tools for this to watch the server performance/load in realtime via the browser? how mysql, linux, apache etc are doing... what is best practice regarding this? any tutorials would be great. thanks!

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  • Raid0 setup - What should 'my computer' say?

    - by superexsl
    Hey, I'm not a hardware person, so maybe someone here could help me. I ordered a PC from Dell that has "Serial ATA Raid 0 "Stripe"(7200RPM)Dual HDD" (2x500gb). However, I've just noticed that there's only one HD of 1TB (which is the default option when ordering). Should I be seeing two HDDs in "My Computer" or does the Raid0 setup simply improve performance rather than have (and display) two individual HDDs? How can I check if my computer does have a 'raid0' setup? Thanks

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  • I'm ready to boot from vhd, how about you?

    - by tony roth
    I've been testing native vhd boot on several servers, and it seems to be pretty transparent and none of my seat of the pants testing has notice any difference in performance. I have a bunch of servers to roll out that will have the following features/roles dfsr dhcp iis application server dc <- haven't tested this yet but see no reason why it won't work. any opinions/ideas on this?

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