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  • useful JMX metrics for monitoring WebSphere Application Server (and apps inside it)?

    - by Justin Grant
    When managing custom Java applications hosted inside WebSphere Application Server, what JMX metrics do you find most useful for monitoring performance, monitoring availability, and troubleshooting problems? And how do you prefer to slice and visualize those metrics (e.g. chart by top 10 hosts, graph by app, etc.). The more details I can get, the better, as I need to specify a standard set of reports which IT can offer to owners of applications hosted by IT, which those owners can customize but many won't bother. So I'll need to come up with a bunch of generally-applicable reports which most groups can use out-of-the-box. Obviously there's no one perfect answer to this question, so I'll accept the answer with the most comprehensive details and I'll be generous about upvoting any other useful answer. My question is WebSphere-specific, but I realize that most JMX metrics are equally applicable across any container, so feel free to give an answer for JBoss, Tomcat, WebLogic, etc.

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  • Can Ping but Cannot Telnet directly to SQL Server 2012 Cluster Nodes

    - by tresstylez
    We have a monitoring tool (Solarwinds Orion) that needs to connect to a 2-node failover SQL Server Cluster. For reasons outside of our control -- we cannot monitor the CLUSTER IP directly at this time, so we have fallen back to monitoring each cluster node IP directly. This is not working. Upon troubleshooting, we tried to test that the cluster node was listening on the proper (fixed) port by using telnet to the cluster node IP/port -- and the telnet failed. However, telnet'ing to the Cluster IP/Port was SUCCESSFUL! Each node has its own IP. Each node is listening on the identical FIXED port. Each node has Dynamic Ports disabled. Each node can be PINGED successfully from the monitoring tool. Windows Firewall is DISABLED. How can I troubleshoot why I cannot telnet to the listening port on the cluster nodes?

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  • Remote connection to Mysql not working

    - by Fillipe Silva
    We have an application running with CodeIgniter and MySQL in cestacerta.com. Ther are two versions: One that is in production and it works perfectly, and one that is our Development version. This runs locally on my machine and the other developers. The development version needs to remotely connect to the database, and it rather suddenly stopped working. I've given permission to access any IP settings on the server. I can access the database through the MySQL Gui Tools. I have tested access to several different codes, including a newly downloaded version of CodeIgniter and always got the same error: "A Database Error Occurred Unable to connect to your database server using the provided settings. Filename: C: \ xampp \ htdocs \ cestacerta \ system \ database \ DB_driver.php Line Number: 119 " What troubleshooting steps can I take determine if the error is on our workstations (which all have the same error) or on our server.

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  • Dhcp clients fail after successful import of server to new machine (win2k3)

    - by Tathagata
    I transfered the configs of a dhcp server from one server to another both running Windows Server 2003 R2 following http [://] support.microsoft.com/kb/325473. The new server has a statically configured ip(outside the scope) like the old one. Stopped the server on the old, and started up in the new server (authorized too) - but when I ipconfig /renew from a client its network interface fails with all 0.0.0.0 (or 169...*). I read somewhere I need to reconcile the scope to sync the new registry values ('ll try this tomorrow). What other troubleshooting steps can I take other than these (which didn't help)? Things work fine when the old server resurrects and the new one is taken down. The new server showed there was no requests for offer.

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  • Ubuntu, connecting to WLAN

    - by Holly
    Hello, I successfully installed Ubuntu onto my usb hard drive. However, I'm not sure what the issue is with my internet. I'm not familiar enough with ubuntu to know whether this is a problem with recognizing my wireless card or with my internet, etc. So I suppose my question is, how do I tell whether it's recognizing my wireless card? (Network manager isn't showing any wireless signals, though I wasn't sure if it was supposed to. ) And, if it's not working, how do I go about troubleshooting that issue? Thanks!

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  • Storage drives is causting system crash

    - by Chad
    I'm running Centos 5.4 with 750GB(ntfs) and 2TB drives for storage. Originally I installed the 750, everything seemed fine and then I installed the 2TB drive with NTFS already partitioned. I noticed when I would copy a lot of videos it would crash (no mouse or response from server) about 20min into it. After doing some troubleshooting I noticed the 750 would also crash when doing the same task so I decided that NTFS may be the problem. I unmounted the 2TB drive and tried to partition and format it using ext2 but when using parted it would crash at this point "writing inode tables". Looking at the dmesg logs I believe this is the error "mtrr: type mismatch for e0000000,10000000 old: write-back new: write-combining". Any idea as to what could be causing this?

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  • 'DNS service isn't responding' in windows 7

    - by pradeeptp
    Hi All, I bought a brand new Dell Studio 1558 just last week. It has windows 7 home premium 64-bit installed on it. My friend who is occupying the adjacent room has a laptop with windows XP. Both of us are connecting to the same wireless router of the hotel. My friend is able to connect to the wireless network without any trouble, but when I try to connect, I get the error "DNS service isn't responding". I met two more people in the same hotel with win XP laptop and they too dont have any problem. I have gone to possibly all the forums and website but I haven't been able to fix this error :(. I have done all the basic troubleshooting but I have no luck yet. Pls help. Following is one forum where the problem seem to have been trouble shooted but not for all. http://social.technet.microsoft.com/Forums/en/w7itpronetworking/thread/eeb84518-903d-46d1-9398-80cf211878d7

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  • Compaq Presario V2000 Vista/7 trial virtualization

    - by James Schweninger
    I am currently studying for an A-Plus certification to which was recently added troubleshooting Windows 7 to the exam. You also have to be very familiar with Vista as well. I only have XP on my Compaq Presario V2000, but I wanted to set it up ( I believe I have the minimum requirements for both ) so that I could run trial versions of Vista and 7 virtually.Windows 2000 is also on the exam. Is there an easy legal way to do this? I wouldn't mind partitioning my HDD for the four operating systems either. Thnx if you have any ideas, JLS

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  • Headphones stopped working in Windows (working fine in other OS)

    - by arnab321
    All of a sudden, my headphones stopped working with windows 8 in my laptop. Sound plays fine through built in speakers. Its not a problem with the hardware, because, I dual boot ubuntu and sound plays fine in Ubuntu. These are the things I have tried: - Restarting and blah blah. Restarted 20 times i think, alternating windows and ubuntu. - Uninstalled and reinstalled Realtek drivers. - Troubleshooting from control panel (it says "coudnt identify problem") What might be the problem?

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  • Ubuntu, connecting to WEP

    - by Holly
    Hello, I successfully installed Ubuntu onto my usb hard drive. However, I'm not sure what the issue is with my internet. I'm not familiar enough with ubuntu to know whether this is a problem with recognizing my wireless card or with my internet, etc. So I suppose my question is, how do I tell whether it's recognizing my wireless card? (Network manager isn't showing any wireless signals, though I wasn't sure if it was supposed to. ) And, if it's not working, how do I go about troubleshooting that issue? Thanks!

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  • Issues connecting to a pix 501 via console cable

    - by Bourne
    Have a pix 501 that was set up to do filtering and I was working on setting the vpn up when I lost ssh connectivity. Looking at the front, all 4 lan lights blink intensely green but in a very repetitive pattern. The funny thing is there are only 3 devices connected to the 4 ports so that's the first element that doesn't look right to me. Console cable light doesn't turn on when cable is plugged in and have tried rebooting it many many times to see the bootup sequence with no result. Also, I cannot connect to it via pdm or console but the traffic is permitted through. Are there any additional troubleshooting steps I could do or should I count it as dead? Thank you.

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  • How do I install the latest Sun Java JRE on Ubuntu Server 9.10?

    - by blackrobot
    Unfortunately, if I try to install sun-java via apt-get, it's not found in the repositories. # apt-get install sun-java6-jre Reading package lists... Done Building dependency tree Reading state information... Done Package sun-java6-jre is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package sun-java6-jre has no installation candidate If I try to install it using the bin from Sun's website, here's the issue: # ./jre-6u18-linux-i586.bin (license agreement...) Do you agree to the above license terms? [yes or no] yes Unpacking... Checksumming... Extracting... ./jre-6u18-linux-i586.bin: 366: ./install.sfx.10648: not found Failed to extract the files. Please refer to the Troubleshooting section of the Installation Instructions on the download page for more information. Thanks for the help.

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  • Get-Mailbox not returning all mailboxes

    - by rotard
    I am trying to set up an exchange mailbox backup job with Vembu Storegrid and StoreGrid is unable to list the mailboxes for the client. While I was troubleshooting the issue, I did notice another thing: running the Get-Mailbox command on the mail server as the backup user only shows the mailbox for that account, while running Get-Mailbox as my admin account returns a list of what appears to be all the mailboxes. My service account is a member of "Administrators", "Domain Admins", and "Domain Users". What additional permissions might be required to list all mailboxes in the system?

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  • Uncorrectable machine check

    - by GregC
    I am experiencing rare but real unrecoverable machine checks on HP DL370 G6 dual-core Xeon server. I ran memtest86+ before, and ran CPU-intensive operations without any problems. In your opinion, does this indicate a real problem, or is it normal and expected behavior? How would you approach this problem? EDIT after some troubleshooting, it seems that these machine checks, as well as problems when showing device manager can be traced back to NC375i NICs. All is well when the NICs are not in the server. Further improvements to stability of HP Gen6 with Intel Xeon have been brought in with BIOS update in September 2013 HP Update DVD. Intel's newer microcode makes these CPUs much more stable. We haven't seen hardware-related BSODs since the update in September.

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  • solr administration

    - by devrick0
    Does anyone have any notes for an sysadmin supporting solr? I'm looking for anything that might be useful for monitoring & metrics as well as troubleshooting. Some useful links I have found are: /solr/admin/stats.jsp and /solr/admin/analysis.jsp In the logs I have noticed, other than the query, "hits", "status" and "QTime" values. The documentation on what these mean is sparse at least based on the 100+ websites I have checked. QTime appears to be the query time response in milliseconds. Hits is some form of results but I'm not sure exactly what makes that up and I'm not sure about status. Typically I see status come back as "0" but I have seen other numbers such as "5", so my thoughts that it could be either HTTP status codes or a 0 or 1 (good or bad) methodology isn't accurate. All of the documentation I have come across is intended for developers. Any sysadmin-centric documentation would be a big help.

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  • Windows 2003 Server Suddenly Drops Connections to everything but PING and port 80 (webserver)

    - by Urda
    Hi, I'm running a Windows 2003 Dedicated server, and the box has been rock solid for more than 2 years now. Just recently, I have had an issue where after a certain ammount of time the server will just stop accepting connections on all ports except 80, and still responds to pings. If you surf to a static HTML page on the box, you can display it. If you pull up a PHP file that has an outside database connection, it fails. RDP refuses to connect, and LogMeIn reports that "The connection was reset" The only fix at this time is to have the provider physically reboot my box to correct the issue. The event log doesn't seem to be leaving helpful messages, and I am at a lost to what is causing this error since I have not installed any new software in months on it. Any tips or help would be appreciated to tracking down this issue. I don't mind updating the question as responses come in, I just do not know where to start troubleshooting because it seems random at this time.

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  • dhcp client service won't start

    - by xyious
    I have a Laptop with 2 network interfaces and neither will get an IP address through dhcp. I found out that the dhcp client service didn't start. Upon manually starting it gives the error 2: File not found. I have checked that the files were there (both svchost and dhcpcore .dll), the local service account has read access to the system32 folder, the path in the registry is also correct and I can access the file. I have tried to netsh winsock reset and ip reset all. I have even added the local service account to the administrators group. sfc /scannow also came up clean. I have no idea what else I can try. Any suggestions are welcome. (side note it's a windows 7 32 bit, atheros wlan, deinstalled avira before any of the other troubleshooting)

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  • How can I fix a computer that is literally too slow to do anything?

    - by fredley
    I'm troubleshooting a Windows 7 PC for a friend. A couple of days ago it started running 'slow'. It turns out 'slow' is about 15 minutes to the first glimpse of the desktop, and another 30 to show icons. It is possible to open Task Manager, and nothing seems awry, CPU usage at 1-5%, plenty of memory free. The machine is clearly infested with malware though, in particular a program called 'Optimizer Pro' is demanding money to 'remove 5102 files slowing down my computer'. This seems highly suspicious. My problem is though, that I can't access msconfig (I left it for a couple of hours after having hopefully typed it into the Start Menu and hit enter - nothing seems to have loaded), or anything at all basically. I can boot from a Linux Live CD, but can I actually do anything useful from there? System Restore hasn't fixed it either, and Safe Mode exhibits the same behavior.

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  • centos 5.6, virtual on Vsphere

    - by Glasnhost
    suddenly my virtual centos server (5.6 on VMWare-VSphere) is not working... It started with the url not responding, nor the ip. (NO HTTP response, no ping). When I entered on the server via ssh to start troubleshooting I noticed that most of commands don't work anymore: top- machine hangs (it's not slow anyway) ps - machine hangs (funny enough apache server and web app are running and sending me emails) on some directory ls -l - machine hangs after first file, if ls l.txt the file show only the first file "more" command, also hangs on some file. So there are very little things I can try. I recovered my virtual machine from yesterday and before yesterday, and they show the same behaviour, it hangs on commands (but yesterday they were working). There is no firewall on the machine, there is on the host though. I can connect with ftp but I can't download files nor list directory apart the user top directory... Working hard right now, any idea appreciated

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  • join ZFS/Solaris to windows AD 2003/2008 domain

    - by user95587
    I have a client trying to join his newly updated ZFS/Solaris box to my Windows AD 2003/2008 domain. Here is the command he is using and the error he is getting; Console: root@xxx:/etc/inet# smbadm join -u USER DOMAIN After joining DOMAIN the smb service will be restarted automatically.Would you like to continue? [no]: yes Enter domain password: Joining DOMAIN ... this may take a minute ... failed to join DOMAIN: UNSUCCESSFUL Please refer to the system log for more information. From /var/adm/messages: Sep 22 10:12:00 xxx smbd[593]: [ID 702911 daemon.error] smbrdr_exchange[116]: failed (-3) Sep 22 10:12:01 xxx smbd[593]: [ID 232655 daemon.notice] ldap_modify: Insufficient access Sep 22 10:12:01 xxx smbd[593]: [ID 898201 daemon.notice] Unable to set the TRUSTED_FOR_DELEGATION userAccountControl flag on the machine account in Active Directory. Please refer to the Troubleshooting guide for more information. Sep 22 10:12:01 xxx smbd[593]: [ID 526780 daemon.notice] Failed to establish NETLOGON credential chain Sep 22 10:12:01 xxx smbd[593]: [ID 871254 daemon.error] smbd: failed joining DOMAIN (UNSUCCESSFUL)

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  • Fedora 17 Hangup on Boot (plymouth-quit-wait)

    - by Joe
    I am having an issue after several updates where when I try to boot the boot animation "loads" then flashes with the fedora logo, and then sits there. After checking into it more I found that two services were failing to start. The first is tcsd.service and the second is plymouth-quit-wait.service. I was able to to disable tcsd.service (in the hopes I could boot without it), however I have been unable to do anything to the second service. I am running FC17 and the akmod nvidia drivers, on an ASUSG53SW. Everything is up to date as far as I know. What is the exact problem that I am facing and how can I go about troubleshooting this or fixing it?

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  • How do I stop my IIS App Pool making a request to wpad.mydomain.com?

    - by Programming Hero
    As part of some performance troubleshooting, I've monitored the slow startup of a "cold" App Pool (one without an active worker process) in IIS. When using a built-in account, the App Pool starts in sub-second time. When using a custom local account the App Pool takes 30+ seconds to start processing requests. The service appears to be making requests to wpad.mydomain.com, an address it does not have access to, which causes it to wait 30 seconds for a response before eventually timing out. As a workaround, I've added the hostname to the server's hosts file, to direct the traffic to the local machine, which returns much faster (1-2 seconds). What do I need to do to stop IIS making this request when this identity is used for the App Pool?

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  • Sharepoint asks for NTLM credentials for every unique URL. How do I stop it?

    - by CamronBute
    I'm tasked with troubleshooting a problem we're having with a SP2010 site. The app is external, and there are several clients that must connect. Some clients are receiving a crazy amount of credential requests when trying to log on. It appears to ask for every unique URL (eg. every different picture, link, etc) and it won't stop. Other clients are having no problems. I cannot seem to replicate the issue, either. I'm attempting to replicate by restricting all settings (including cookies) on my own browser, but to no avail. I put the HTTP request under a microscope, and it's asking for NTLM credentials. The client is using IE8, and the browser is running in Protected Mode, but the browser settings cannot be determined... I'm guessing this is a webserver thing, simply because it appears to be an authentication thing. What might the problem be?

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  • Why is my /dev/random so slow when using dd?

    - by Mikey
    I am trying to semi-securely erase a bunch of hard drives. The following is working at 20-50Mb/s dd if=/dev/zero of=/dev/sda But dd if=/dev/random of=/dev/sda seems not to work. Also when I type dd if=/dev/random of=stdout It only gives me a few bytes regardless of what I pass it for bs= and count= Am I using /dev/random wrong? What other info should I look for to move this troubleshooting forward? Is there some other way to do this with a script or something like makeMyLifeEasy | dd if=stdin of=/dev/sda Or something like that...

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  • No wireless adapter in msi u200

    - by Mino Marimat
    I have a MSi u200, and the weird thing was that I was using this normally before, then after a few minutes all of a sudden it couldn't find the wifi signal from my house. I did some troubleshooting and a bit of search in the control panel, and it seems like my hardware is missing. :( I can't even turn on the wireless light using Fn+F8, so my suspicions about the missing hardware strengthened. I tried searching for DIY fixes, but I found out that the wireless card is actually built-in deeper, unlike the RAM cards and the hard drive where you can either replace or add more cards. What do I do?? As of the moment, I can get connected to my wifi here at home using a wireless adapter via usb, and it's working. So my guess about the hardware problem seems correct. HELP!!! Thanks!

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