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  • Macbook Pro won't boot from DVD with SSD

    - by Adam Carr
    Here's the timeline of events. Had a running MBP 17 Early 2011 Thunderbolt with OWC Mercury Extreme Pro SSD 115GB drive. Installed Windows 7 via bootcamp. I have done this multiple times before and every time I need to format the bootcamp partition before installing. I think this time I actually deleted the partition and then selected the freespace to install. This worked fine for the most part but I wasn't able to boot the boot camp partition using vmware fusion. I gave up and used the boot camp assistant to revert back to one mac partition. I was getting some odd behavior so I rebooted the machine. It then came up with a message saying no bootable partiton. This made me think (and still does) that the windows install using the free space versus the boot camp partition caused the windows MBR boot loader to get installed incorrectly and mucked up the OS X installation. Ok, fine, I can just reinstall. I can't seem to boot from the original MBP installation DVD. I hold down c on boot but I never get past the all grey screen. I hear the DVD drive spin up but it eventually stops. I put the original HD back in it and everything works fine but when I put the SSD in, I can't boot from the DVD drive. I have already set up an RMA with OWC to send back the drive but considering the order of events, I feel as though it isn't a hardware issue but can't seem to figure out how to fix it. I can always send it back in but figured I would check and see if anyone could offer some guideance/assistence before doing so.

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  • Why can't I see installed AIR applications in /Applications on Mac OS Lion?

    - by Damir Zekic
    Yesterday I did a clean install of Mac OS Lion, and installed bunch of apps, including HipChat Desktop Application (an Adobe AIR app). I used it for some time and eventually closed it. Today I wanted to start it again, but couldn't find it in Launchpad. I looked in /Applications folder, but I couldn't find it there either (I still don't have ~/Applications). I went back to HipChat website (from where I installed) and a Flash plugin allowed me to run the app immediately. It shows up in my Dock and if I "keep it" there, I can launch it again (it still doesn't appear in my /Applications dir). However, it asks me for confirmation about launching an app that has been downloaded from the Internet (every time I start it, it's annoying). I also see the app in Adobe AIR uninstaller. I then went to my old Snow Leopard installation and found HipChat in my /Applications folder there. Copied it to the Lion disk and it works. Now I have two HipChat entries in Adobe AIR uninstaller. I guess I solved the issue at hand, but I still don't understand where the original app is located and how I can access it and move it to Applications. I couldn't find it anywhere with both Finder search nor find command in terminal (I used $find / -name "HipChat*" -print). So, how does Adobe AIR store the installed applications (on OSX Lion) and is there any way to get them to show up in Launchpad?

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  • LSI MegaRAID LINUX got Optimal after degradation but strange POST message

    - by kesrut
    Linux server box with LSI MegaRAID controller got degraded. But after some time RAID status changed to Optimal. Adapter 0 -- Virtual Drive Information: Virtual Drive: 0 (Target Id: 0) Name : RAID Level : Primary-1, Secondary-0, RAID Level Qualifier-0 Size : 2.727 TB Mirror Data : 2.727 TB State : Optimal Strip Size : 256 KB Number Of Drives per span:2 Span Depth : 3 Default Cache Policy: WriteBack, ReadAdaptive, Cached, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAdaptive, Cached, No Write Cache if Bad BBU Default Access Policy: Read/Write Current Access Policy: Read/Write Disk Cache Policy : Disk's Default Encryption Type : None Is VD Cached: No But now I'm getting RAID BIOS POST message: Your battery is either charging, bad or missing, and you have VDs configured for write-back mode. Because the battery is not currently usable, these VDs willl actually run in write-through mode until the battery is fully charged or replaced if it is bad or missing. (Image: http://cl.ly/image/1h1O093b1i2d) So may it be battery issue caused problem ? I get information about battery: BatteryType: iBBU Voltage: 4001 mV Current: 0 mA Temperature: 22 C Battery State : Operational BBU Firmware Status: Charging Status : None Voltage : OK Temperature : OK Learn Cycle Requested : No Learn Cycle Active : No Learn Cycle Status : OK Learn Cycle Timeout : No I2c Errors Detected : No Battery Pack Missing : No Battery Replacement required : No Remaining Capacity Low : No Periodic Learn Required : No Transparent Learn : No No space to cache offload : No Pack is about to fail & should be replaced : No Cache Offload premium feature required : No Module microcode update required : No Where can be problem ? I'm disabled alarms, but get them if enabled. But don't know how find root of problem.

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  • VMware Workstation reboot 32-bit host when starting 64-bit guest

    - by Powerman
    I'm trying to start 64-bit guest (MacOSX and Windows7) on 32-bit host (Hardened Gentoo Linux, kernel 2.6.28-hardened-r9) using VMware Workstation (6.5.3.185404 and 7.0.1.227600). If VT-X disabled in BIOS, VMware refuse to start 64-bit guest (as expected). If VT-X enabled in BIOS, VMware start guest without complaining, but then, in about a second (I suppose as soon as guest try to switch on 64-bit) my host reboots (actually, it's more like reset - normal reboot procedure skipped and BIOS POST start immediately). My hardware is Core 2 Duo 6600 on ASUS P5B-Deluxe with latest stable BIOS 1101. I've power-cycled system, then enabled Vanderpool in BIOS. My CPU doesn't support Trusted Execution Technology, and there no way to disable it in BIOS. I've rebooted several times after that, sometimes with power-cycled, and ensure Vandertool is enabled in BIOS. I've also run VMware-guest64check-5.5.0-18463 tool, and it report "This host is capable of running a 64-bit guest operating system under this VMware product.". About a year ago I tried to disable hardened in kernel to ensure this isn't because of PaX/GrSecurity, but that doesn't help. I have not checked 32-bit guests with VT-X enabled yet, but without VT-X they works ok. ASUS provide "beta" BIOS updates, but according to their descriptions these updates doesn't fix this issue, so I'm not sure is it good idea to try it. My best guess now it's motherboard/BIOS bug. Any ideas?

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  • How do you handle data archiving?

    - by 20th Century Boy
    Backups are one thing, but long term archival is another. For example, you might be required to store emails for 7 years, or keep all project data indefinitely. I used to save archives to tape, but then I've had tapes get destroyed (drives rip the tape out). So...write to 2 tapes I hear you say. Is that what others do? Have 2 (or more) tapes of the same data for redundancy? But then the other issue is that tapes cannot usually be read by different backup software vendors. Eg if you go from Arcserve - Backup Exec - Commvault over 10 years you would need to keep all 3 systems so that you could restore old data. Likewise for hardware. Old tapes might not be barcoded. Might not be compatible with the new library etc etc. So do you keep old tape hardware AND old software just in case you might need to restore a 10 year-old file? Or...when you move to a new backup system do you migrate all archived data to the new system and re-archive it onto new tapes? That could be a huge job. Any thoughts?

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  • Should one have a separate user account for work use? [closed]

    - by Tyler Wayne
    This question examines the practice of using a separate OS-level user account to divide work use from personal use (specifically, in a creative profession and on a personal computer). I recently left my in-the-flesh job to go to school, but I'm carrying on with the work remotely. I do all of my work on my laptop, and I currently have a separate user account called "Work" where I do exactly that. However, I'm now starting to question that practice. Because my hobby is the same as my job, I want to save notes of the things I learn while working. Because ideas come at any moment, I often want to throw something into my personal task manager's inbox and look at it again later. That task manager is well-suited to handle both the work and personal aspects of my life. Only my personal account has admin rights, but work sometimes requires me to install programs. My employer has no preference regarding my choice, so that is a non-issue. My work is essentially freelance web development, so advice given with that in mind will be much appreciated. Back up all opinion with some personal experience, please. Ideally, give a list of pros and cons and then name reasons for your position.

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  • Hard drive not correctly recognized on a new Windows 7 installation, but works correctly on Windows XP

    - by david
    I'm having problems configuring a hard disk in a brand new, clean Windows 7 installation. System specs: Hard disk: WD VelociRaptor WD6000HLHX (600 GB, 10000 RPM) Motherboard: Gigabyte Z77X-UD3H BIOS SATA mode set to AHCI (not RAID), with disk connected to SATA0 (6 Gb/s port). Windows 7 Enterprise SP1 64-bit The disk is recognized by the BIOS and is correctly identified, with the name and size correctly reported. Windows recognizes the disk itself and reports the device is functioning correctly, but it doesn't appear in Explorer. Disk Management shows the drive, but incorrectly states that it is uninitialized and has no partitions. If I try to initialize the drive, I get an error saying that "the system cannot find the file specified" (what file?). Before connecting the drive to the new machine, I partitioned and formatted it under Windows XP SP2, creating 2 partitions (MBR, not GPT) and copying over a boatload of data. However, none of this data appears under Windows 7. If I put the disk back into the Windows XP machine, I can access the disk and all of its data. Is it possible to get Windows 7 to correctly recognize the disk without having to erase it and start over? If so, how do I do so? I checked this question, which seems to cover the same issue, but it didn't help.

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  • Domain joined computer unable to access servers through VPN

    - by kscott
    Our servers are in a virtual off site hosting center, our office has a vpn connection to the data center, but for reasons I don't understand we also have to connect to the Citrix Access Gateway (CAG) client in order to access the servers. I am a programmer with rather limited ops knowledge including a weak grasp of networking and terminology. Bear with me. I was just given a new laptop, which is a 64 bit Windows 7 system unlike my previous 32 bit Windows XP desktop which was able to connect without issue. My laptop has been joined to the domain so that I login with my AD credentials, I am able to connect to the CAG and get authenticated, and after doing this I can ping our servers and they resolve to the correct internal IP addresses, but I am unable to use remote desktop to the servers, connect to SQL servers through my local SQL Management Studio, navigate to them through the file system, or view any of our internal intranet websites. All of which I was able to do previously. I have tried turning off my Windows firewall and the problem remains, the DNS servers are set to the correct IPs of our domain controllers, and the ops guys here are a little stumped. Does any one have any suggestions?

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  • Help setting up a secondary authoritative DNS server.

    - by GLB03
    We have three Authoritative DNS servers and three recursive/caching DNS servers on my campus. Authoritative servers DNS1- Windows 2003 DNS2- Old Red Hat ----- Replacing w/ newer version DNS3- Windows 2008 (I installed) Caching and Recursive resolvers servers Server1- Windows 2003 Server2- CentOS 5.2 (I installed) Server3- CentOS 5.3 (I installed) I am replacing DNS2 with a newer Red Hat version, but have no documentation on how it was implemented. I have setup caching and windows authoritative servers, but not a linux secondary authoritative server. I have a perl script from the original server that pulls data from our DNS1 server. We use DJBDNS and TinyDNS on our linux servers. Our Network Engineer says the DNS2 server I am replacing is an authoritative server that doesn't need to be caching, but the only instructions I see is for an Authoritative server that does caching as well. Can someone point me in the right directions. I thought I was on the right track with using these instructions but when I query my new dns server I get "No response from server", I have temporarily disabled iptables to eliminate it from being an issue. ps -aux | grep dns avahi 3493 0.0 0.2 2600 1272 ? Ss Apr24 0:05 avahi-daemon: running [newdns2.local] root 5254 0.0 0.1 3920 680 pts/0 R+ 09:56 0:00 grep dns root 6451 0.0 0.0 1528 308 ? S Apr29 0:00 supervise tinydns dnslog 6454 0.0 0.0 1540 308 ? S Apr29 0:00 multilog t ./main tinydns 9269 0.0 0.0 1652 308 ? S Apr29 0:00 /usr/local/bin/tinydns

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  • SQL Server 2008 R2 mirroring failing

    - by andriusn
    I have two Windows 2008 R2 (Amazon EC2) instances running SQL Server 2008 R2. I use 9TB striped disks (9x1TB EBS volumes) for storage. One server is running as principal and second one as mirror. Both started from the same image, database and tlog files located on striped disk. Mirror server failed 3 times in last 2 months with errors: EventID 823 The operating system returned error 2(The system cannot find the file specified.) to SQL Server during a write at offset 0x00000048058a00 in file 'D:\TLogs***_log.ldf'. Additional messages in the SQL Server error log and system event log may provide more detail. This is a severe system-level error condition that threatens database integrity and must be corrected immediately. Complete a full database consistency check (DBCC CHECKDB). This error can be caused by many factors; for more information, see SQL Server Books Online. and EventID 1454 Database mirroring will be suspended. Server instance 'xxxxxxxxxx' encountered error 823, state 6, severity 24 when it was acting as a mirroring partner for database '***'. The database mirroring partners might try to recover automatically from the error and resume the mirroring session. For more information, view the error log for additional error messages. followed by EventID 19019 The MSSQLSERVER service terminated unexpectedly. After this rebooting instance is necessary to restore mirroring. First two times I thought it was hardware related (striped disk failure) and relaunched instance on new hardware. But the issue is back after few weeks again. It only affects mirror instances. Any help would be really appreciated. Thanks.

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  • Apache2 process stuck at 100% cpu, CLOSE_WAIT socket lingering

    - by mmazing
    I've troubleshooted the heck out of this today, and I can't seem to find any information on how to determine what is happening exactly. Basically, on my development server, another developer is causing CLOSE_WAIT connections that eat up one or more apache2 processes for several hours if I don't restart apache2. strace on any of the processes yields no information, only that it was able to attach. mod_proxy is not enabled. KeepAlive is on, KeepAliveTimeout is 15 seconds, MaxKeepAliveRequests is 100. From what I've been reading, this may or may not be an apache issue at all, just that that's how CLOSE_WAIT works (the server is waiting for a FIN packet to close the connection). I just can't believe that a server would be crippled so easily by not receiving a packet from a remote host telling it to close the connection. Especially without any intervention for well over an hour. Any tips? I'm about to pull my hair out. Edit : Also, there are no unusual entries in any apache log files. Edit 2: lsof -i shows only a single CLOSE_WAIT per hanging process. (That's what has been bothering me about this, as most other discussions talk about many CLOSE_WAIT connections, while I only have one per process.) The nature of the code that is running (php) doesn't really lend itself to closing open connections and whatnot. I can run the same code that he is executing with the same session data, and not result in a hanging process.

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  • Unknown user in terminal

    - by Giles B
    Im having a strange problem with the terminal in OS X. When I open the terminal the username at the command prompt is: unknown-04-0c-ce-e3-0d-c2: ~ I can't pinpoint when this first started or why unfortunately. I usually use iTerm for web development purposes but this also occurs in the normal OS X Terminal app. Any ideas/help would be really appreciated. Thanks Update: Thanks to @fayadfami and @aliasgar for the correct answers and steering me in the right direction. Also this forum post helped http://forums.macrumors.com/showthread.php?t=152407 The extract from the right post: Having run into the exact same issue myself, and having come across this thread while attempting to figure it out, I thought I'd post the answer. OS X is initially setting your hostname to what's set for your Computer Name in Sharing; however, if you're set up for DHCP and you match a current lease on your DHCP server (i.e., match the IP address of another recent user), OS X will then set your hostname to whatever the DHCP server currently has for that lease. This freaked me out incredibly at first, as I had just reformatted (having just purchased my first Mac and wanting to see how the installer worked) and knew I had not yet changed the Computer Name in Sharing -- yet my system hostname at the Terminal prompt was indeed changed to what I had previously set, pre-format. I grepped around, not finding the name anywhere save log entries; I thought either the format didn't actually properly wipe everything, or I was losing my mind. Finally I logged into my router (it's a Linksys WRT54GS running OpenWRT), and found the hostname in the current leases file. I then manually set my Mac's IP to something different, and volia! -- the hostname was back to what I expected. I hope this helps save someone from the same paranoia I went through.

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  • What does a status of "Backup" mean for Windows 7 local user profiles?

    - by Howiecamp
    Summary: Upon logging on to Windows 7 RTM I get a message that my profile can't be loaded and a temporary user profile is created. I logged off and back on as Administrator. The user profiles dialog shows my user profile with a Type of "Local" and a Status of "Backup" rather than "Local" which it should be. How can I change this to make my user profile accessible? The long story: My PC has a single hard drive partitioned into a C: and a D:. I'd moved my user profile directory (c:\Users) to d:\Users, removed c:\Users and then used mklink.exe to create a directory symbolic link c:\Users -- d:\Users. Worked like a charm since I did it. Today, I make a System Restore Point for drives C: and D:. Next, I dismounted D: and used the Disk Management tool to remove the "D:" drive letter from the D volume. (My plan was to reboot and then redirect the symbolic link.) Upon reboot, I got the user profile error described above. Finally, I restored the System Restore Points that I'd created for both drives and then rebooted again. Same issue.

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  • How do I configure nVidia drivers on a Portable Ubuntu setup?

    - by Nicholas Flynt
    I've been pulling my hair out over this one for a couple of days now, google is no help. I've created a wonderful (until this issue) portable copy of Ubuntu linux that will boot on mostly anything by using a USB enclosure for my laptop's 80GB SATA drive. So far so good, it boots and runs on everything, and on non-nVidia card setups was even detecting the drivers, or letting me install the required drivers for hardware acceleration and compiz. Because you know, the wobble windows are the most awesome thing ever. Anyway, my desktop machine had an nVidia card, so I'm thinking, sure, I'll just install the nVidia drivers like before and everything will work happily. Not so-- now the desktop and any other nVidia cards work great, but it seems to have completely disabled any other graphics cards. When the kernel module detects that an nVidia card isn't present, it shoots up this nasty little dialog box giving me the option to boot into "low graphics" mode, which doesn't even allow me to use the correct screen resolution, much less see the installed graphics card and try to configure a driver for it. Is there any way to configure Ubuntu (with the dreaded nVidia kernel module) so that it can use nVidia's drivers when an nVidia card is present, and default to the normal (not low-graphics) setup in other cases, so that it has a fair chance of using what's actually present? I'm not afraid to much with config files, I just don't know the underlying system well enough to feel comfortable diving in without a push in the right direction. Thanks guys!

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  • Limit the amount of data that can be stored in a folder on Ubuntu Server 12.04?

    - by dougoftheabaci
    I'm in the process of building my first server. It's up, it's running, I'm transferring copious amounts of data away from my horrid little Drobo (DO NOT BUY ONE OF THESE, EVER). However, there's one thing I have yet to do: I'd like to set it up for Time Machine backups as well. I've seen all the guides and I have some idea of how to set the whole thing up, but the issue is that Time Machine will just fill up as much space as you let it. So if I let it lose in my 8 TB zpool it'll slowly consume every last available sector. This, of course, is not acceptable. I have a folder at the root of my zpool called "ZFS Time Machine" and I would like to limit it to 1 TB (all I need for backup purposes). However, I have no idea how to do that. Is this possible? I can continue using a small external hard drive attached via FW800 if I have to but I'd much rather prefer putting everything on my server.

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  • What does a DHCP-client consider to be the "best" answer?

    - by Nils
    We have training rooms where normally Windows XP is installed (via PXE). The "normal" DNS/DHCP infrastructure are Windows-Servers. The training room has its own VLAN (different from the Windows servers), so there is most propably an IP helper for DHCP requests active on the Cisco router where all PCs from that room are connected to. Now we wanted to convert some of the PCs to Linux instead. The idea was: Put our own Laptop with a DHCP server into the VLAN of the room and override the "normal" DHCP response. The idea was that this should work, since a directly attached DHCP server in that VLAN should have a faster response-time than the "normal" DHCP server located some hops away from that VLAN. It turned out that this did not work. We had to manually release the lease on the original DHCP server to get it working. On the Laptop we did see the client requesting the IP and "our" dhcp was sending NACKs to the Windows IP request, before that we did offer our own response. Old Question: Why did this not work out as expected? What is making the PC regain its old lease? Update 2012-08-08: The regain-issue has been explained in the DHCP-RFC. Now this explains why the PC regains its old lease. Now we do release the IP from the Windows-DHCP-server before giving it another try. Again - the Windows-DHCP-server wins. I suspect that there is some algorithm for the dhcp-client which determines the "best" dhcp-answer for the client. The new question is: How does the client choose the "best" answer?

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  • Files on ext4 on Drobo with corrupt, zero-ed out blocks

    - by Patrick
    I have a 2TB ext4 file system (Ubuntu running Linux kernel 2.6.31-22-server x86_64). This file system is the second drive on a Drobo box plugged in via USB. We've not had problems on the first drive (Drobo limits drive size to 2TB due to some OS limitations, so if you have more space than that it appears as two separate drives). I am sharing this files with Samba (smbd 3.4.0) with a mix of Windows and Linux workstations. Recently we've been experiencing some data corruption in multiple files. In many cases I have an un-corrupt original file stored on one of the workstations. These are binary files of various formats, (e.g. SQLite, but others as well). I used "split" to split a corrupt and uncorrupt file into 4096 byte chunks (this is the block size of the ext4 file system). I then ran md5sum on pairs of chunks and discovered that the chunks matched in many cases and in every case where they did not match, the corrupt chunk was a solid chunk of zeroes (620f0b67a91f7f74151bc5be745b7110 for what it's worth). I'm trying to track down a culprit but am a bit at a loss. I don't believe Samba is at fault since I'm using it without issue on the first drive exported by the Drobo. What can I do to narrow this down and find out what's going on?

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  • Does Windows 7 Authenticate Cached Credentials on Startup

    - by Farray
    Problem I have a Windows domain user account that gets automatically locked-out semi-regularly. Troubleshooting Thus Far The only rule on the domain that should automatically lock an account is too many failed login attempts. I do not think anyone nefarious is trying to access my account. The problem started occurring after changing my password so I think it's a stored credential problem. Further to that, in the Event Viewer's System log I found Warnings from Security-Kerberos that says: The password stored in Credential Manager is invalid. This might be caused by the user changing the password from this computer or a different computer. To resolve this error, open Credential Manager in Control Panel, and reenter the password for the credential mydomain\myuser. I checked the Credential Manager and all it has are a few TERMSRV/servername credentials stored by Remote Desktop. I know which stored credential was incorrect, but it was stored for Remote Desktop access to a specific machine and was not being used (at least not by me) at the time of the warnings. The Security-Kerberos warning appears when the system was starting up (after a Windows Update reboot) and also appeared earlier this morning when nobody was logged into the machine. Clarification after SnOrfus answer: There was 1 set of invalid credentials that was stored for a terminal server. The rest of the credentials are known to be valid (used often & recently without issues). I logged on to the domain this morning without issue. I then ran windows update which rebooted the computer. After the restart, I couldn't log in (due to account being locked out). After unlocking & logging on to the domain, I checked Event Viewer which showed a problem with credentials after restarting. Since the only stored credentials (according to Credential Manager) are for terminal servers, why would there be a Credential problem on restart when remote desktop was not being used? Question Does anyone know if Windows 7 "randomly" checks the authentication of cached credentials?

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  • Apache rewrite rules and special characters

    - by Massimo
    I have a server where some files have an actual %20 in their name (they are generated by an automated tool which handles spaces this way, and I can't do anything about this); this is not a space: it's "%" followed by "2" followed by "0". On this server, there is an Apache web server, and there are some web pages which links to those files, using their name in URLs like http://servername/file%20with%20a%20name%20like%20this.html; those pages are also generated by the same tool, so I (again!) can't do anything about that. A full search-and-replace on all files, pages and URLs is out of question here. The problem: when Apache gets called with an URL like the one above, it (correctly) translates the "%20"s into spaces, and then of course it can't find the files, because they don't have actuale spaces in their names. How can I solve this? I discovered than by using an URL like http://servername/file%2520name.html it works nicely, because then Apache translates "%25" into a "%" sign, and thus the correct filename gets built. I tried using an Apache rewrite rule, and I can succesfully replace spaces with hypens with a syntax like this: RewriteRule (.*)\ (.*) $1-$2 The problem: when I try to replace them with a "%2520" sequence, this just doesn't happen. If I use RewriteRule (.*)\ (.*) $1%2520$2 then the resulting URL is http://servername/file520name.html; I've tried "%25" too, but then I only get a "5"; it just looks like the initial "%2" gets somewhat discarded. The questions: How can I build such a regexp to replace spaces with "%2520"? Is this the only way I can deal with this issue (other than a full search-and-replace which, as I said, can't be done), or do you have any better idea?

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  • How is Apache still working?

    - by PJ
    Recently, I decided to set up a local development environment for my work projects. I'm a PHP developer, with just enough knowledge of Linux and Apache to break things mightily. To get the local environment looking like my work environment, I had to upgrade PHP. When I did, Apache wouldn't restart. I decided I wanted to start fresh (this is where things went wrong) and that I'd reinstall Apache and PHP using MacPorts. So, I went through and tried to delete all the Apache files. Yup. I ran locate apache2 and deleted any folders that looked important. (I know, I know) Then I did a /usr/libexec/locate.updatedb to make sure everything was up to date. I even restarted my machine, just to make sure. The issue is, http://localhost still works. As does an alias I set up, http://butler. Shouldn't they not work? Now that I'm this far in, are there any tips for how to completely remove Apache so I can start over? Worst case, I have a timemachine backup, so I can always just restore that... Thanks in advance.

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  • How do I get a Wireless N PCi card to connect to a wireless G router?

    - by Andy
    I'm having some problems setting up a new wireless PCI card on a WinXP SP3 PC. I know that the router is configured correctly. It is a Linksys WRT54GL, using 802.11b/g. Security mode is WPA2 Personal with TKIP+AES encryption. I am able to connect to this fine using my laptop (first gen MacBook with a 802.11b built in card). The new PCI card is also Linksys, but it supports 802.11n. Card seems to be installed ok (Windows sees it fine, doesn't list any errors in Device Manager), however when it scans for available wireless networks it can't find my wireless network (the router is set to broadcast the SSID). I tried to enter the network SSID manually, but that didn't seem to help. I chose WPA2-PSK for network authentication. The only options for encryption are TKIP or AES - I've tried both, neither worked. I am sure that I typed in my wireless key correctly. At this point, I don't think the problem is with encryption, but something else. It almost seems like I need to switch the wireless card into g mode, but I haven't found a way to do that (if that is even possible/necessary - I thought n was fully backwards compatible with g). Also, the PC is in the same room as the router, and my laptop, so I don't think that it is an interference issue. Any ideas what I'm doing wrong? I'm running out of things to try at this point. :(

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  • Avoiding DNS timeouts when a dns server fails

    - by Neil Katin
    We have a small datacenter with about a hundred hosts pointing to 3 internal dns servers (bind 9). Our problem comes when one of the internal dns servers becomes unavailable. At that point all the clients that point to that server start performing very slowly. The problem seems to be that the stock linux resolver doesn't really have the concept of "failing over" to a different dns server. You can adjust the timeout and number of retries it uses, (and set rotate so it will work through the list), but no matter what settings one uses our services perform much more slowly if a primary dns server becomes unavailable. At the moment this is one of the largest sources of service disruptions for us. My ideal answer would be something like "RTFM: tweak /etc/resolv.conf like this...", but if that's an option I haven't seen it. I was wondering how other folks handled this issue? I can see 3 possible types of solutions: Use linux-ha/Pacemaker and failover ips (so the dns IP VIPs are "always" available). Alas, we don't have a good fencing infrastructure, and without fencing pacemaker doesn't work very well (in my experience Pacemaker lowers availability without fencing). Run a local dns server on each node, and have resolv.conf point to localhost. This would work, but it would give us a lot more services to monitor and manage. Run a local cache on each node. Folks seem to consider nscd "broken", but dnrd seems to have the right feature set: it marks dns servers as up or down, and won't use 'down' dns servers. Any-casting seems to work only at the ip routing level, and depends on route updates for server failure. Multi-casting seemed like it would be a perfect answer, but bind does not support broadcasting or multi-casting, and the docs I could find seem to suggest that multicast dns is more aimed at service discovery and auto-configuration rather than regular dns resolving. Am I missing an obvious solution?

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  • Local SSL connections are causing redirect loop (after Ubuntu update)

    - by codeinthehole
    Following a recent Ubuntu update, my local websites are no longer serving their pages over SSL. For example, my .htaccess file attempts to ensure /sign-in is always served over HTTPS: RewriteEngine On RewriteCond %{HTTPS} off RewriteCond %{REQUEST_URI} /sign-in RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [L,QSA,R=301] However when I make a request to /sign-in on the domain site2-local , I get the error "The page isn't redirecting properly" with the following in /var/log/apache2/error.log [Tue Jun 08 12:20:57 2010] [info] [client 127.0.1.1] Connection to child 0 established (server site1-local:443) [Tue Jun 08 12:20:57 2010] [info] Seeding PRNG with 656 bytes of entropy [Tue Jun 08 12:20:57 2010] [info] Initial (No.1) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.2) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.3) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.4) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.5) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.6) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.7) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.8) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.9) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:20:57 2010] [info] Subsequent (No.10) HTTPS request received for child 0 (server site2-local:443) [Tue Jun 08 12:21:12 2010] [info] [client 127.0.1.1] (70007)The timeout specified has expired: SSL input filter read failed. [Tue Jun 08 12:21:12 2010] [info] [client 127.0.1.1] Connection closed to child 0 with standard shutdown (server site2-local:443) There is a connection to site1-local (another site on my machine which shares the certificate), which I don't understand. Anyone know what is causing this issue?

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  • Slow network file transfer (under 20KB/s) on newly built x64 Win7

    - by Mangoshake
    I am getting <20KB/s for local network file transfer. If I transfer a very small file (less than 100KB) it would start quickly then slow down to <20KB/s. all subsequently network file transfer would be slow, a reboot is needed to reset this. If I transfer a large file it would be stuck on calculating for a long time and then begin with <20KB/s immediately. This is a newly built desktop running Windows 7 x64 SP1. Realtek gigabit LAN from the motherboard (ASRock Extreme3 gen3). Problematic speed is observed on the private LAN, both through ethernet and WiFi. The Router is D-Link DIR-655. Remote Differential Compression is off. Drivers are up-to-date from ASRock's website. I have tested network file transfer to and from another Windows 7 laptop and a MacBook Pro, so I am fairly certain it is the desktop's problem. The slow speed only happens with one direction also, outbound from the desktop, regardless of whether I initiate the file transfer action from the origin or the destination. Inbound network file transfer and internet speeds are fine, so I don't think this is a hardware issue. I am getting 74.8MB/s internet upload speed from speedtest.net (http://www.speedtest.net/result/1852752479.png). Inbound network file transfer I can get around 10-15MB/s. I am hoping this community has some insight for me to troubleshoot this. I don't see anything obviously related from the Event Viewer, and beyond that I just don't know where else to look. Any suggestions are greatly appreciated, thank you in advance.

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  • Brick-level backup and restore with exchange 2007

    - by V. Romanov
    In the company I'm working for, we use exchange 2007 and backup it using netbackup. The backup is a daily complete backup of the information store and the direct corollary of this is that restores are hell. We need to restore the entire information store (over 80 gb), somehow merge it back with the original store, which causes problems. Alternatively, we tried using QUEST software to emulate exchange and restore mails from the emulation. However, this proved unreliable. The main problem with this entire situation is that we have to restore the whole information store and walk it through the restore process manually, and its quite absurd to be forced spend more than a day restoring even one erased email. (we have erased mail retention, but sometimes we need to restore older mail). in comparison, back in the day of XCH2003 and backupexec 12, we had complete brick level backup and restore at the push of a button. I've spoken to one of our chief sysadmins who claimed that the official response from microsoft to this issue was - "sorry guys, no brick level backup in XCH2007" which sounds ridiculous to me. Can someone shed some light on the situation? How do you backup your exchange2007 stores? Can you restore a single email quickly? A mailbox, perhaps?

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