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  • How to manually start and re-start Apache with mod_wsgi powering a password protected Python WSGI app?

    - by Mahmoud Abdelkader
    I'm working on a project where I have to meet some regulatory requirements that require at least 3 out of 5 authorized users to start a backend web service that handles very sensitive information using pre-assigned passwords. Right now, the prototype has been approved and is running using Python's wsgiref.simple_server(), which I have programmed to manually prompt for the passwords. Now that the prototype has been approved, I have to migrate the web application to a production environment where I will need to run it behind Apache and mod_wsgi. I have two questions: Right now, I use a thin Python wrapper around expect to programmatically allow for remote password entry. How do I get Apache to prompt me for a password before starting? Will this have to be in the app.wsgi script that's executed by mod_wsgi? How would that work since Apache daemonizes, and thus, has no stdin! Will I have to worry about some type of code reload? Apache probably has some maximum number of requests before it kills and restarts another worker process, but, would this require a password prompt as well?

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  • Why do I get a DegradedArray event with mdadm

    - by azera
    Hello Just so we're clear on what's happening: I bought 4 new sata 2 drives, with the intent of using them in a raid5 all drive are fully recognised by both my bios and my linux box (gentoo) I created a raid5 array, fiddled a bit with it to understand how it works, how to monitor ect At some point, this triggered a degradedarray event, even though the array is brand new. I tried to stopping the array and recreating a new array with the same drive but the new array starts degraded too. here is what I used to create it mdadm --create -l5 -n4 /dev/md/md0-r5 /dev/sdb /dev/sdd /dev/sde /dev/sdf here are the output from my /proc/mdstat and mdadm --detail --scan **mdstat** Personalities : [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md127 : active raid5 sdf[4] sde[2] sdd[1] sdb[0] 4395415488 blocks level 5, 64k chunk, algorithm 2 [4/3] [UUU_] [>....................] recovery = 2.8% (41689732/1465138496) finish=890.3min speed=26645K/sec unused devices: <none> **detail** ARRAY /dev/md/md0-r5 metadata=0.90 spares=1 UUID=453e2833:81f22a74:64188b84:66721085 As such I have a couple questions: does a raid5 array always start in degraded mode at first ? why does sdf have the number 4 between bracket instead of 3, why does it see a spare disk and why is the 4th drive marked with _ instead of U ? (bad configuration ?) How can I recreate the array from scratch, do i have to format each drive on its own before recreating it ? Thanks for any help, I'm not sure about what I should do at the moment

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  • Creating basic, redundant gigE or IB storage network for Xen?

    - by StaringSkyward
    With only a modest budget, I want to move my 4 xen servers over to network storage -either NFS or iSCSI which will be determined based on how well it performs when we test it (we need good throughput and it must continue to work through link and switch failure tests). We may add another couple of xen servers at some point when this is done. I don't know much about the design and operation of storage networks, so would really appreciate some hints from those with experience. The budget is around $3,800 excluding the storage appliance. I am currently thinking these are my options to remain on budget: 1) Go for used infiniband hardware and aim for 10gb performance. 2) Stick with gig ethernet and buy some new switches (cisco or procurve) to create a storage-only ethernet LAN. Upgrade to 10gigE later but try to use hardware capable of it where possible to reduce upgrade costs. I have seen used, warrantied infiniband switches at reasonable prices (presumably because big companies are converging on 10gbit ethernet?) and the promise of cheap 10gb is attractive. I know nothing about IB, so here come the questions: Can I buy 2 x switches and have multiple HBAs in my xen and storage nodes to get redundancy and increased performance without complexity or expensive management software costs? If so, can you point me to some examples? Do NFS and iSCSI work just the same regardless? Is IB a sensible choice or could/should I use ethernet or FC on the same budget - I'm keen not to get boxed into a corner for future upgrades, however. For the storage I am likely to build a storage server using nexentastor with the intention that I can later add more disks, SSDs and add another server to provide a failover option at the storage level. An HP LeftHand starter SAN is also under consideration, too. Thanks in advance.

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  • IIS 6 + ASP.NET web service - DW20 and stackoverflow exception

    - by pcampbell
    Consider an ASP.NET SOAP web service that starts up fine, but craters hard when receiving its first hit. Please note that this is deployment works in the Test environment, but not in the PreProd environment. Both are Windows 2003 SP3 + IIS 6 + ASP.NET 3.5. All up-to-date. The behaviour that we're seeing is: restart the site & app pool the app pool is configured to run under Network Service. browsing to the .asmx and .wsdl responds normally, as expected. send a normal well-formed SOAP request / normal payload to the web service 100% CPU usage after 5 seconds, the page request / site returns "Service Unavailable" no entry is created in the IIS log file (i.e. c:\windows\system32\logfiles\W3C-foo) the app pool ends up being stopped The processes that hit the CPU hard are dw20.exe. I am unsure why Dr Watson is involved here. Event Log shows an ASP.NET Runtime error: Task Manager: Event log text: EventType clr20r3, P1 w3wp.exe, P2 6.0.3790.3959, P3 45d6968e, P4 errormanagement, P5 1.0.0.0, P6 4b86a13f, P7 24, P8 0, P9 system.stackoverflowexception, P10 NIL. Questions Any thoughts on what this system.stackoverflow exception might be? Given that the code is the same between environments, might it be a payload problem? Could it be a configuration issue? You can see the name of my .NET assembly there in the exception message: "ErrorManagement"

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  • DNS-Based Environment Determination

    - by zvolkov
    Found the following here. The questions is: where can I find more details on how exactly implement this on Windows? Any guide or how-to anybody? Or maybe you can provide your invaluable suggestions? Specifically, how do I make so that "all QA servers would first resolve entries in qa.example.com first and then if that lookup failed they would try example.com" (I'm a dev, not a DNS specialist, but our IT Support has refused to help on this:() Use DNS Based Environment Determination for your servers. Do this by initially splitting your top level domain into a number of sub domains depending on their function, and then creating DNS Service Names in each of the sub domains pointing to the relevant server for that service. Based on the list above we would then have: * clientdb.prod.example.com for Production * clientdb.perf.example.com for Performance Testing * clientdb.qa.example.com for QA * clientdb.dev.example.com for Development Servers then resolve entries in their relevant sub domain by function. That is, all QA servers would first resolve entries in qa.example.com first and then if that lookup failed they would try example.com. This allows you to have a single configuration entry for your client database hostname (clientdb) that would resolve correctly in all environments. This technique has the added advantage of still having global services defined in a common top level domain. This seems to be related to Providing "split horizon" DNS service. Reading that, I see that I will probably need separate DNS Server for each environment. Is this true or does Windows support some form of "tagging" the records to be visible depending on the requestor's IP?

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  • Zero downtime uploads / Rollback in IIS

    - by NickatUship
    I'm not sure if this is the right way to ask this question, but here's basically what i'd like to do: 1.) Push a changeset to a site in IIS. 2.) Don't interrupt the users. 3.) Be able to roll back effortlessly. So, there are a few things that I know have to happen: 1.) Out of Proc session - handled 2.) Out of Proc cache - handled So the questions that remain: 1.) How do i keep from interrupting the users? If i just upload the files to bin, the app recycles and takes 10+ seconds to come back online 2.) How do i roll back effortlessly? I was thinking a possible solution would be to have two sites set up in IIS, one public and one private. Uploads go to private and get warmed up. After warmup, the sites are swapped. A rollback only entails swapping to private without an upload. This seems sound in theory, but Im not sure of the mechanics. Any ideas?

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  • Need Suggestions on Backup Strategies and Alternatives?

    - by Leejo
    I'm not sure where else to post this question since it is not exactly Code or Development related...but I know Stackoverflow is a very responsive to questions... Currently, I use Mozy Home to perform an online backup of my laptop. So far, this works well, since I only use one laptop that needs to be backed up. But, soon this may change and I want to explore other alternatives than having to perform an online backup on all machines. Ideally, I want to set up a Network Computer (Laptop/Desktop) with enough storage to hold the backups for all other machines that I would have. Each machine should be responsible for performing their backup (to the Network Computer). This would require some capability like Mozy's incremental backup strategy, but instead of online backup, I would prefer it to be done locally to the Network Computer. Can you recommend a local backup software (backup to a network pc, incremental backup, good restore options)? I'm also looking for any ideas on a local backup strategy even if its different from what I've stated? What works and what doesn't work? Thanks in advance for your help!

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  • Adding a Second Wireless Router to an Existing Wired Network

    - by KVCrawford
    I apologize ahead of time, I know this has been asked before, but I'm still having problems...maybe you guys can help. I started out with the basic instructions from the highest-voted answer at http://serverfault.com/questions/41572/adding-a-second-wireless-router-to-my-network The new Wireless router in question is a Linksys Wireless-N Gigabit Router, Model # WRT310N Here are the steps I've taken in setting it up: Plug my laptop into LAN port #2 in the new router. Nothing else is connected at this point Configure the new router to be 192.168.1.200 (the original router is 192.168.1.1, and its DHCP clients are from 192.168.1.100-x.x.x.199) Set the internet connection on the new router to "DHCP Client" Turn off the DHCP server & NAT routing on the new router Plug in a LAN cable from the original router into the LAN port #1 on the new router (NOT the WAN port, nothing is plugged in there) Reset the new router Afterwards, I try to ping 192.168.1.1 from the laptop plugged into LAN port #2 on the new router, with no response. 192.168.1.200 garners no response either. Typing "ipconfig" tells me: Autoconfiguration IP Address: 169.254.198.113 Subnet Mask: 255.255.0.0 Default Gateway: 169.254.198.113 What's going wrong? I appreciate any help!

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  • Trouble with IIS SMTP relaying to Gmail

    - by saille
    I appreciate that similar questions have been asked about how to setup SMTP relaying with IIS's virtual SMTP server. However I'm still completely stumped on this problem. Here's the setup: IIS 6.0 SMTP server running on Win2k3 box with a NAT'ed IP. Company uses Gmail for all email services. An app on the box needs to send email, so normally we'd just set the app up to talk to smtp.gmail.com directly, but this app doesn't support TLS. Easy, we just setup a local SMTP relay right? So I thought. What we have done so far: Setup IIS SMTP server to relay to smtp.gmail.com, as per these excellent instructions: http://fmuntean.wordpress.com/2008/10/26/how-to-configure-iis-smtp-server-to-forward-emails-using-a-gmail-account/ The local SMTP relay allows anonymous access. Both the local IP and the loopback IP have been explicitly allowed in the Connection and Relay dialogs. Tried sending email from 2 different apps via the local SMTP server, but failed (the emails end up in the Queue folder, but never get sent). The IIS logs show the conversation with the local app, but zero conversation happening with smtp.gmail.com. The port used by gmail is open outbound, and indeed the apps we have that support TLS can send email directly via smtp.gmail.com, so there is no problem with the network. At this point I changed the smtp settings in IIS SMTP server to use a different external SMTP server and hey-presto, the local apps can send email via local IIS SMTP relay. So smtp.gmail.com fails to work with our IIS SMTP relay, but another 3rd party SMTP service works fine. We need to use smtp.gmail.com, so how to troubleshoot this one?

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  • Trying to understand Wireless N vs Wireless AC

    - by EGHDK
    Whenever a new wireless standard gets approved you expect faster speeds and longer range. From everything that I've read about it, it seems that AC will only transfer over the 5GHz band and up to 3Gbps. Studying the new AC routers on the market, it seems that they will transfer over 5GHz and 2.4GHz. And 5GHz will only transfer at 1.3Gbps. Which isn't what AC is supposed to be. I know there is a difference between what the standard actually says, and what products will actually do, but is there any reason for this? Is there any other main differences between AC and N? I've heard people discussing AC and saying that it's finally "fixing" what N was supposed to fix... what do they mean by that? Any security benefits? I have seen this image online: Will AC really do that? Will that require an AC network card in my laptop for that to actually happen? Lastly, will the router only be able to communicate with AC devices if I have beamforming technology on? I know it's a ton of questions, but most articles online seem to be outdated, and don't provide too much reliability.

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  • Buffer Overflow errors when reading ConfigDelay and Manufacturer info from registry

    - by peter
    Hi All, This is a strange driver error which doesn't make a lot of sense to me. I am running an application developed in C# .NET which our company develops. I was monitoring the application using process monitor and noticed that it accesses the registry a lot. The output on Process Monitor looks like this, Operation Result Path RegQueryValue Success HKLM\System\CurrentControlSet\Enum\SWMUXBUS\SW_MODEM\7&6c4af30&0&5&0004\Driver RegQueryValue Success HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\Properties RegQueryValue Success HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\Default RegQueryValue Success HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\InactivityScale RegQueryValue Name Not Found HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\PowerDelay RegQueryValue Name Not Found HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\ConfigDelay RegQueryValue Buffer Overflow HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\Manufacturer RegQueryValue Buffer Overflow HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\Model RegQueryValue Name Not Found HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\Version The app is reading this stuff every 5 seconds from the registry, so I would ask a few questions, 1) What is this stuff 2) Why is the app reading this stuff 3) Why is it saying 'Buffer Overflow' 4) Could this cause performance problems for my app? From what I can see the app does not explicitly read this stuff, so I think this relates to a driver on the machine (which is a netbook)

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  • Recommendations for colocation in the US

    - by Emil
    Hello serverfault I work for a European media company and we are currently looking for colocation in the US. I know the European market quite well unfortunately that is not the case for the US. I'm hoping for you guys to help me out a bit with a few questions, it would be much appreciated! I am looking for a data center that can deliver a high level of availability (tier 3 or better). The installation will be fairly large so capacity is important. Good internet connectivity/carrier presence. However most important is good customer support, skilled dedicated and responsive technical staff, since we won't have tech staff close by. I'm looking for a small and fast moving company that target internet businesses rather than big old enterprise hosting. What locations should we go for given that we want to reach all of the US from a single site and still maintain decent latency? (do we need east and west coast?) Where are the main internet hubs and should you try and get as close as possible? Are there any good online resources I should look at? Where do the large scale internet/media services colocate? Lastly I would be very happy to get some actual recommendations for companies to talk to P.S I'm happy to return the favor if anyone has question regarding data centers and colocation in Europe.

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  • Very uneven CPU utilization with SQL Server 2012 on 2 processor computer with 16 cores / processor

    - by cooplarsh
    After installing SQL Server Enterprise 2012 with the Server + Cal license model, on a computer with 2 processors each with 16 cores (and no hyperthreading involved) and putting the server under extremely heavy load the 16 cores on the first processor were very underutilized, the first 4 cores on the 2nd CPU were heavily utilized, and the last 12 cores were not used at all (because of the 20 core limit for this sql server version). Total CPU utilization was displaying as around 25%. Unfortunately, the server suffered from extremely poor performance even though if the tasks were evenly distributed across the 20 cores it wouldn't have been anywhere near as bad. The Windows Server was running on a VMWare virtual image under ESX Server, but all of the CPU was allocated to the windows server. We tried changing affinity settings (e.g., allocating most cores to CPU and the others to I/O), but that didn't help solve the performance problems. Upgrading the product edition to SQL Server Enterprise Core 2012 not only allowed the SQL Server to utilize the 12 previously unused cores on the 2nd processor, but it also resulted in a much more even distribution of tasks across all of the processors. To get through the backlog of requests cpU utilization jumped to around 90%, and then came down to around 33% once it was caught up, but performance improved dramatically since we failed over to the newly updated version And the performance issues went away. I was wondering if anyone knows what might cause SQL Server to unevenly distribute the load, relying almost exclusively on the first 4 cores of the 2nd processor that had 12 cores idle, and allocate only a few tasks to each of the 16 cores on the first processor. Also, is there any way we could have more evenly distributed the load across the 20 cores that were being used without the product edition upgrade? The flip side of that question is what did the product upgrade do that caused SQL Server to start evenly distributing the load across all of the cores that it recognized? Thanks to any insight to answer these questions and/or links that might help me better understand how to make sense of what was happenings.

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  • VMware and Windows Activation

    - by Peter M
    Yesterday I installed Slysoft's Virtual CloneDrive in order to mount an iso for some software installation on my host system (XP Pro SP3) This morning I fired up VMware and made a linked clone of an existing XP vm in order to do some software testing. This is the sort of thing that I do all the time, and the base XP vm that I clone was activated a long long time ago. The surprise today was that the newly cloned vm was no longer activated and XP cited major changes in hardware as the reason. I repeated the test with a full clone of the base system and got the same message. I then started up my base vm and it seemed to be activated, yet another vm (which I fully cloned from the base vm a long time ago) now started reporting that XP was not activated. At this point I guessed that Virtual DriveClone might have been the source of my hardware differences so I uninstalled it and rebooted. After this I made a new linked clone and full clone of the base vm and XP did not complain about not being activated. So I seem to be back to where I was before installing Virtual DriveClone with the exception that that one particular XP vm continues to complain about activation (even though 4 or 5 other XP vm's are fat and happy) Now to my questions: Why would adding Virtual CloneDrive to the host system affect XP activation on the vm's? From their point of view I would have thought that the environment had not changed as I had not enabled any new hard drives in their systems. Or is adding a hard drive to the host system enough to upset XP activation? Since this event, one of my fully cloned vm's is still reporting that XP is not activated even though I have removed Virtual CloneDrive. Is there anyway to convince XP that it is on the same system as yesterday? Or are my only options to do an activation or restore the vm from a previous backup?

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  • Firefox 29 - how do I delete history entries visited fewer than x times

    - by lousyuser
    Context: I've been using my Firefox profile for a couple of years now. My history file has become huge, naturally. I got Firefox Sync set up between my main desktop PC and my laptop. HW configs: PC: i5-3450, 8 GB DDR3 RAM, Crucial M4 128 GB SSD laptop: Pentium SU4100, 4 GB DDR3 RAM, WD 5400 rpm HDD Accessing history entries when typing into the Awesome Bar on my desktop takes quite a long time despite the decent config, the laptop is even slower. The experience is quite unresponsive. I figured if I cleared the history up a little bit, I might avoid creating a new profile to speed things up. The question itself: to illustrate: Is there a way to delete all history entries that have been visited fewer than x (let's say 5) times and at the same time the recent visit is fewer than y (let's say 120) days old? afaik the history file is some kind of SQL database, but I'm not really sure how the data is saved, if there's a "safe way" to edit it and what the query to do what I need would look like. Thanks in advance for any help. I kept browsing through previous SuperUser questions to see if I could find relevant information. "In my Firefox profile directory, there is a filed named places.sqlite. Opening it with sqlite reveals (amongst others) the tables moz_places and moz_historyvisits. It seems that moz_historyvisits uses the primary of moz_places to refer to the URLs." As I'm unfamiliar with databases, I don't really understand the way the two tables mentioned in the quote are related. screenshot of a part of the tables I've noticed the visit_count is in a standard format, making it easy to work with. The last_visit_date looks encrypted to my naked eye, but I can't see in which way. Hope that helps, I'm at my wits' end.

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  • Programmer configuring a new network

    - by David Lively
    I'm in the process of expanding my home network from a couple of laptops on a wireless Verizon FiOS router to include: Linksys 24-port switch Cisco Pix 515 Cisco 3640 router One new development desktop and three new machines to act as a db server, web server and a backup system. My company is moving offices and we've decommissioned some older hardware, which I was able to pick up for the cost of the labor to move it home from the office. The benefits to working with dedicated web and db servers are very valuable to me. I know very little about network topology, other than that everything plugs into the switch, which then plugs into the cheap Verizon router. (Verizon provides a coax connection that the router must translate into Ethernet before I can use it with any of this equipment). Questions: What is the recommended topology for this equipment? Verizon router - Pix - 3600 - switch? Is the 3600 even necessary or desirable? The Verizon router has one WAN port and 4 client ports, all 10/100. Is there any performance benefit at all to wiring multiple connections from the verizon router to the switch, assuming I don't use the Pix? Should I use the Pix? Software firewalls are a pain, and seem silly if I have a device like this lying around. Anything else I should know? Am I wasting my time with this? I also obtained a 7 foot rack, shelves, patch panels, UPS, patch panels, etc, which are going into a conveniently air conditioned closet. All constructive advice appreciated.

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  • Using AT on Ubuntu to Background Downloads (w/ Queue)

    - by Nicholas Yost
    I am writing a PHP script, but I want to use the AT command in Ubuntu to fetch a remote file via WGET. I'm basically looking to background the process, so PHP can finish fairly quickly. I cannot find any questions on here about how to use both, but I basically want to do the following pseudo-code: <?php exec('at now -q queuename wget http://path.to/remote/file.ext'); ?> Additionally, I'd like to queue this between providers. I'd like to have each path.to have its own queue, so I only download one file from each provider at a time. Meaning: <?php exec('at now -q remote wget http://path.to/remote/file.ext /local/path'); exec('at now -q vendorone wget http://vendor.one/remote/file.ext /local/path'); exec('at now -q vendortwo wget http://vendor.two/remote/file.ext /local/path'); exec('at now -q vendorone wget http://vendor.one/remote/file.ext /local/path'); ?> This should download the files from path.to, vendor.one, vendor.two immediately, and when the first file is finished downloading from vendor.one, it starts the second file. Does that make sense? I can't find anything like this anywhere on the web, much less on SO/SF. If we can use the crontab to run a one-off wget command, thats fine too.

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  • Value of Itanium over x86_64 for Oracle Deployment

    - by Antitribu
    We are looking at a new environment to run our Oracle Database running on SUSE (potentially migrating to RedHat). Our database is approximately 100GB and performs adequately on our current hardware (x86_64) with approximately 6GB of ram allocated to it. We are growing quickly however and will require more performance shortly. Given the cost of Oracle licenses we would like to maximize the value from each license by choosing the most appropriate CPU to run the software on. The questions are: Are there substantial benefits to looking at Itanium hardware, are there any drawbacks? Is there a point where Itanium starts to scale out better? What are the long term support options for Itanium? Given the dominance of x86 would it be safer long term to stick with x86? On average what would be the performance benefit of implementing an Oracle database on Itanium over x86_64? Is this an issue at all or will other factors (IO/RAM) cap out first? If anyone can point me towards some solid documentation on comparisons between the two platforms that provides good case analysis of when to choose which I'm more than happy to accept that as an answer.

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  • Excel 2010 data validation warning (compatibility mode)

    - by Madmanguruman
    We have some legacy worksheets that were created in Excel 2003, which are used by LabVIEW-based test automation software. The current LabVIEW software can only handle the legacy .xls format, so we're forced to keep these worksheets as-is for the time being. We've migrated to Office 2010 and when working with these worksheets, I see this warning: "The following features in this workbook are not supported by earlier versions of Excel. These features may be lost or degraded when you save this workbook in the currently selected file format. Click Continue to save the workbook anyway. To keep all of your features, click Cancel and then save the file in one of the new file formats." "Significant loss of functionality" "One or more cells in this workbook contain data validation rules which refer to values on other worksheets. These data validation rules will not be saved." When I click 'Find', some cells that do indeed have validation rules are highlighted, but those rules are all on the same worksheet! We're using simple list-based validation, with some cells off to the side containing the valid values (for example, cell B4 has a List with Source "=$D$4:$E$4") This makes no sense to me whatsoever. One, the workbook was created in Excel 2003, so obviously we couldn't implement a feature that doesn't exist. Secondly, the modifications we're making don't involve changing the validation rules at all. Thirdly, the complaint that Excel is making is incorrect! All of the rules are on the same worksheet as the target. As if the story wasn't bizarre enough: I went ahead and saved the worksheet with Excel 2010. I then went to an old computer back in the lab and opened the document with Excel 2003. Guess what - the validations were untouched! My questions are: is this a legitimate bug in Excel 2010, or is this some exotic error in the legacy .xls worksheet that is confusing the heck out of Excel 2010? Has anyone else observed this issue working in compatibility mode?

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  • Referencing groups/classes from Puppet dashboard in my site manifest

    - by Banjer
    I'm using Puppet Dashboard as my ENC and I'm not sure how to reference or use class and group classifications from /etc/puppet/manifests/site.pp. I have two groups defined in the dashboard: CentOS6 and SLES11. What should my site.pp look like if I want to include a certain list of modules in the CentOS6 group and a certain list of modules in the SLES11 group? I'm trying to do something like this: # /etc/puppet/manifests/site.pp node basenode { include hosts include ssh::server include ssh::client include authentication include sudo include syslog include mail } node 'CentOS6' inherits basenode { include profile } node 'SLES11' inherits basenode { include usrmounts } I have OS-specific case statements within my modules, but there are some modules that will only be applied to a certain distro. So I suppose I have two questions: Is this the best way to apply modules/resources in an OS-specific manner? Or does the above make you want to vomit? Regardless of #1, I'm still curious as how to reference classes, groups, and nodes from Dashboard within my manifests. I've read the External Nodes doc, but I'm not seeing how they correspond to manifests. Thanks all.

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  • ESX 4.0 space: DASD, NAS, or ?

    - by thormj
    I put together an ESX box for better management, but its performance is a WTF item; I'm a noob at dealing with ESX, so I'm looking for a laundry-list of reading material to help me straighten this out so I can go back to .NET programming. Current storage system: We're running Raid5+Hotspare (8x500 GB spindles) on a PERC6i on a Dell 2910. Due to ESX limitatios, the PERC is showing the storage as 1x2TB + 1x800GB "partitions." I'm not sure of the setup's configuration (stride / stripe / ???) at all. Our Applications We have a SBS server as well as a minor (2x50 GB, but growing at 10GB/month) database server... Our application that lives on the database VM is CPU and I/O insense; it's a database churning excercise mixed in with a lot of computation on the data (fixing that performance is what I'm supposed to be working on)... Perfomance Issue When I do a backup, restore, or worse (copy a backup from 1 vm to another to move it to the QA VM), the entire system slows to a crawl (even "unrelated" VMs). I originally thought a DASD situation would be quite good since you had PCI-x bandwidth, but the systemwide slowdown is killing productivity. Questions What should I do to make an intelligent decision about NAS vs RAID vs SAN vs DASD? Are there sweet spots/ugly spots in the storage setup? Can you use a SSD PCI-X card in ESX for the tempdb? Good/Bad idea? Is there any way to "share" some image in a copy-on-write fashion? Most of the "Backup-Copy-Restore" is to "put a clean image on the dev boxes"; if I could have them "share" the master image, the "big copy" (2x50 GB) would only need to be done once per week instead of once per dev per week...[runtime performance isn't a concern with the dev boxes, but the backup/copy/restore kills production, SBS, and everything else on the box]

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  • How to use DNS/Hostnames or Other ways to resolve to a specific IP:Port

    - by tomaszs
    This is a Canonical Question about DNS/Hostnames resolution to IPs/Ports Example 1 I'm running a web server on port 80 and another on port 87. I would like to use DNS so that www.example.com goes to port 87. How can I accomplish this using DNS only? Example 2 I'm running a service on my server on a non-standard port. How can I get clients to connect to this non-standard port automatically? Can I use DNS? Is there some application specific support where DNS could indicate the IP and Port? Example 3 Do some application protocols specifically support hostname awareness, and allow special actions to be taken based on this information? Are there other questions on Server Fault that cover some of these? Commandeering: This question was originally asking about running IIS and Apache on the same server, but the same concepts can be applied to any server software receiving connections from clients. The Answers below describe the technical problems and solutions of using DNS and application protocol support to assign a port number for a client to connect.

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  • Can I have damaged a CPU ?

    - by Pascal
    Hey guys, This is a question I asked on Anantech forums, but I just discovered this community and think this question would fit right in. Here goes: I built a PC around a Q9550 1 1/2 years ago (MoBo is an Asus P5Q deluxe). Specs give 2.83GHz, OC'ed it to 3.40 GHZ without any problem (or so I thought) till 2 months ago. Cooling is provided by stock Intel Fan... 2 Months ago, I began to see random crashes, bios saying CPU overheat error... PC would reboot at OC'ed speed without any problem. Since last saturday and a few more crashes, PC won't reboot at 3.40 GHz, and even at stock speed (2.83 GHz), I got core temperatures of (60 C idle, 95 C under load) on the first two cores. This is the 4 core temperatures I am talking about, not the T-CPU which obvioulsy is lower. Fan is running at a steady 2000 RPM. Questions for you : 1. Is 2000 RPM the normal speed of the Intel fan or is my fan somehow broken (which could explain the overheating). In this case, any recommendation for a good fan for OCing ? 2. Hypothesis I fear is the right one: can the CPU have been slowly damaged over time by this OCing, meaning there is nothing much to do except waiting for it to die ? (As a side note, I am surprised that the 9550 is still around 300 $CDN here... Thought it would have been cheaper with all those i3/i5/i7 around). Any help or advice would be more than welcome...

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  • Optimal file system type and mount options for an rsnapshot dedicated drive

    - by Nimmy Lebby
    We have an external USB 2 drive that we are using as a backup drive for our configuration. We use rsnapshot for the backups. It uses a few standard commands for managing snapshots: rm -rf: deletes expired snapshots mv: moves older snapshots down a slot cp -al: duplicates last snapshot to new slot rsync -a --delete --numeric-ids --relative: synchronizes new snapshot As you could see by the log below, the majority of the time is spent on the rm -rf and the cp -al steps: [25/Dec/2010:14:00:02] rsnapshot hourly: started [25/Dec/2010:14:00:02] echo 21012 > /var/run/rsnapshot.pid [25/Dec/2010:14:00:02] rm -rf /mnt/extdrive/snapshots/hourly.5/ [25/Dec/2010:14:15:48] mv /mnt/extdrive/snapshots/hourly.4/ /mnt/extdrive/snapshots/hourly.5/ [25/Dec/2010:14:15:48] mv /mnt/extdrive/snapshots/hourly.3/ /mnt/extdrive/snapshots/hourly.4/ [25/Dec/2010:14:15:48] mv /mnt/extdrive/snapshots/hourly.2/ /mnt/extdrive/snapshots/hourly.3/ [25/Dec/2010:14:15:48] mv /mnt/extdrive/snapshots/hourly.1/ /mnt/extdrive/snapshots/hourly.2/ [25/Dec/2010:14:15:48] cp -al /mnt/extdrive/snapshots/hourly.0 /mnt/extdrive/snapshots/hourly.1 [25/Dec/2010:14:23:32] rsync -a --delete --numeric-ids --relative /etc /mnt/extdrive/snapshots/hourly.0/sm4/ [25/Dec/2010:14:23:52] touch /mnt/extdrive/snapshots/hourly.0/ [25/Dec/2010:14:23:52] rm -f /var/run/rsnapshot.pid [25/Dec/2010:14:23:52] rsnapshot hourly: completed successfully My questions: I'm currently using ext4 for the filesystem. Maybe this is not the best choice from those available in Red Hat. Anyone have any recommendations that would speed up the process? The partition's mount options are sync,dirsync 1 2. Is there a way to optimize this since it's solely used for rsnapshot? Of course, reasoning would be greatly appreciated.

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  • Binding to LDAPS using PHP failing

    - by Sean
    We've finally set-up our server to accept ldap SSL connections thanks to another question answered by a helpful member. Our problem now is that when attempting to bind to ldap using the below simple PHP script, we constantly fail. Binding using ldap instead of ldaps works just fine using the script so I know the ldap is enabled. The catcher is that while using LDP.exe, we can successfully connect and bind to ldap on port 636 using a secure connection. The script we are failing with is below: <?php $ldap = ldap_connect("ldaps://localhost"); $username="user"; $password="pass"; if($bind = ldap_bind($ldap, $username,$password )) echo "logged in"; else echo "fail"; echo "<br/>done"; ?> We've also attempted inputting the username as "user@domain" or "domain/user" with no success. It seems I'm forever having LDAP/Cert questions. Our environment is Server 2008.

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