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• emule algorithm and how to get fast download speed.

  - by Benjamin

  Actually, I use amule in ubuntu. Because emule users are much more, I wrote emule in this title. But whatever emule or amule, it's okay. Both of them are very similar. I want to get fast-download speed as much as I can. But I don't understand emule(or amule)'s detail functions and algorithms. These are always very qurious to me. If I provide higher upload-speed or more valuable files to other people, can I get benefit?(My download speed) Is serverlist important? Does it cause my download-speed? I captured a image for my amule. Please explain these columns and let me know your tips for getting fast speed. What does 8/9+23 mean in the Source column? What does 294/300(1) mean in the Source column? What does QR:608(0) mean in the Priority? What do I do for getting fast download speed as much as I can get? You can also explain other columns.

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• OpenVPN IPV6 Tunnel Radvd

  - by Arenstar

  Hello.. I have an interesting question regarding ipv6 + openvpn.. My Version is OpenVPN 2.1.1 i have been given a native /64 ipv6 network ( for this example 2001:acb:132:acb::/64 ) The plan was/is, route this block through openvpn and into an office ( for testing purposes ) Soo to explain.. I have a Centos Box as the first linux "router" in a datacenter & a Ubuntu box as the second linux "router" in the office I have created a simple point-to-point tunnel using tun ( based off ipv4 address to start the tunnel ) I have assigned to Centos /sbin/ip addr add fed1::1/128 dev eth0 /sbin/ip addr add fed2::2/128 dev tun0 /sbin/ip route add 2001:acb:132:acb::/64 dev tun0 ## ipv6 Block down the tunnel /sbin/ip route add ::/0 dev eth0 ## Default out to Gateway I have assigned to Ubuntu /sbin/ip addr add fed1::3/128 dev tun0 /sbin/ip addr add fed1::4/128 dev eth0 /sbin/ip route add 2001:acb:132:acb::/64 dev eth0 ## ipv6 Block down to eth0 /sbin/ip route add ::/0 dev tun0 ## Default up the tunnel I have also included on both servers.. sysctl -w net.inet6.ip6.forwarding=1 Looks Good... right??? Wrong.. :( I am not able to ping fed1::1 from fed1::4 (Ubuntu) (can ping :4,:3,:2) However, i can ping fed1::1 fed1::2 from :3 ?????? ( very strange ) I am able to access the internet from any ipv6 interface on the Centos Box but clearly not from the Ubuntu box.. Further, i will eventually run radvd on the Ubuntu box eth0, and autoconf the network with ipv6 address's Anyone with some advice / tips to help me out.. ??? Cheers

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• Looking for "bitmap-vector" image editor

  - by Borek

  I used to use PhotoImpact which is no longer developed so I'm looking for a replacement. What made PhotoImpact great to me was the ability to work in both bitmap and vector modes. What I mean by that: I could have an image or screenshot and easily add arrows, text captions or shapes to it. These shapes were vector objects so I could come back to them later and amend their properties easily. Software I know of: Paint.NET is purely bitmap so please don't recommend it - layers are not enough for my needs Drawing tools in MS Office work pretty much the way I'd like - you can paste an image and then add vector objects on top of it. It just doesn't feel right to have the full-fidelity original images stored as .docx or .pptx (I don't fully trust Word/Powerpoint that they don't compress the image) I'm not sure about GIMP but if it's just "better Paint.NET" (i.e., layers but no vector objects) I'm not interested Photoshop is out of question purely because of its price tag Corel killed PhotoImpact because they already had a competing product (Paint Shop Pro) but AFAIK it lacks vector features. Any tips for PhotoImpact alternatives would be very welcome.

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• How/when do you study?

  - by Sergei

  Would be interesting to find out how other sysadmins are educating themselves. I find myself in the need of constantly learning new things. I prefer to spend more time on the subject and know it thoroughly knowing that not doing so will kick me back in the future. This can be frustrating sometimes as it feels that I move too slowly. Our company has account on safari.oreilly.com and I am reading a book or two at any given time. I also read sysadmin related blogs for ideas and tips and to keep myself in the tune with the trends. I cannot do any study at home as I would rather spend my out of work hours with my family plus I find it hard/impossible to study at home due to the inability to concentrate at home. So I mostly study while on the train, luckily my commute time takes up to 2 hours a day. I also read a lot at work and don't feel guilty about it. To fix/implement/plan, I need to have a solid knowledge and if it requires time then this is a part of my job being a sysadmin. There is a joke that says "sysadmin is a person that knows a lot about everytihng and as a result knows nothing" - I think ther is a grain of truth here...

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• how to download vim script in command line

  - by HaiYuan Zhang

  whenever I want to install a new vim script to the linux server I'm working in , my typical workflow is as the following: surf the plugin's homepage in vim online using fireXXXX download a right version of the plugin to my laptop by click some highlighted link upload the downloaded plugin from my laptop to linux server using winscp which is really inconvenient. I don't know what is the magic behind this : I mean for the same hyperlinki click it in web browser I can let you download it but use wget plus the hyperlink in linux commandline will end up with nothing but error indication. hyperlink in web browser . otherwise I can get the link in web browser and then use wget or some similar tool to actually do the downloding. I try new cool vim scripts quite often , so you can imagin my dismay when have to repeat the tedious action all the time. So if anyone of you knows some tips which can let me downloading the vim scripts in a more "professional" way, I'll appreciate it a lot. post edit : My problem is not find a tool like wget or curl . The problem I met is quite specific to use these tools to download vim script. let's take http://www.vim.org/scripts/script.php?script_id=30 as an example, it's the normal place where one can get the script, at least for me. but I can't find an working url from this page that can feed to wget .

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• How to work around blocked outbound hkp port for apt keys

  - by kief_morris

  I'm using Ubuntu 9.10, and need to add some apt repositories. Unfortunately, I get messages like this when running sudo apt-get update: W: GPG error: http://ppa.launchpad.net karmic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5A9BF3BB4E5E17B5 W: GPG error: http://ppa.launchpad.net karmic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 1DABDBB4CEC06767 So, I need to install the keys for these repositories. Under 9.10 we now have the option to do this: sudo add-apt-repository ppa:nvidia-vdpau/ppa See this Ubuntu help article for details. This is great, except that I'm running this on a workstation behind a firewall which blocks outbound connections to pretty much all ports except those required by secretaries running Windows and IE. The port in question here is the hkp service, port 11371. There appear to be ways to manually download keys and install them on apt's keyring. There may even be a way to use add-apt-repository or wget or something to download a key from an alternative server making it available on port 80. However, I haven't yet found a concise set of steps for doing so. What I'm looking for is: How to find a public key for an apt-package (recommendations for resources which have these, and/or tips for searching. Searching for the key hash doesn't seem all that effective so far.) How to retrieve a key (can it be done automatically using gpg or add-apt-repository?) How to add a key to apt's keyring Thanks in advance.

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• How to set up RAID-0 first time on new PC?

  - by jasondavis

  I have built basic PC's in the past but have never used a RAID array at all. SO now I am buying parts to build my new PC, it will be an intel i7 processor. My motherboard will have RAID support which I will use instead of an aftermarket raid controller for now. Also I plan to use 2 SSD drives in RAID-0 for my windows 7 OS. (Please note that I am aware of the issues with doing this, including lack of TRIM support when using RAID with SSD drives. I am OK with it not working as I can just re[place the drives in a year or so or wheneer they become more sluggish). SO here is my question part. If I assemble the motherboard, PSU, processor, RAM, vidm card, etc and then go to turn the PC on, it will have the 2 SSD drives hooked up. so I assume I will then soon the BIOS screen before I install windows? How to I go about making the 2 drives work in RAID-0 at this point? I do the raid part before installing my OS right? Please help with the steps involved from assembling the parts of the PC and then turning it on, to the part of getting the RAID-0 set up between the 2 drives and then installing my windows 7 OS from a Optical drive? Please help, all advice, instructions, tips appreciated as long as on topic. I do not need to be told that this is a bad idea as far as if 1 drive fails I losse it all, I plan on having a disk IMAGE to be able to restore my OS and software to a new set of drives at anytime needed in the event of drive failure. Same goes for lack of TRIM support. Thanks for reading and help =)

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• How to best tune my SAN/Initiators for best performance?

  - by Disco

  Recent owner of a Dell PowerVault MD3600i i'm experiencing some weird results. I have a dedicated 24x 10GbE Switch (PowerConnect 8024), setup to jumbo frames 9K. The MD3600 has 2 RAID controllers, each has 2x 10GbE ethernet nics. There's nothing else on the switch; one VLAN for SAN traffic. Here's my multipath.conf defaults { udev_dir /dev polling_interval 5 selector "round-robin 0" path_grouping_policy multibus getuid_callout "/sbin/scsi_id -g -u -s /block/%n" prio_callout none path_checker readsector0 rr_min_io 100 max_fds 8192 rr_weight priorities failback immediate no_path_retry fail user_friendly_names yes # prio rdac } blacklist { device { vendor "*" product "Universal Xport" } # devnode "^sd[a-z]" } devices { device { vendor "DELL" product "MD36xxi" path_grouping_policy group_by_prio prio rdac # polling_interval 5 path_checker rdac path_selector "round-robin 0" hardware_handler "1 rdac" failback immediate features "2 pg_init_retries 50" no_path_retry 30 rr_min_io 100 prio_callout "/sbin/mpath_prio_rdac /dev/%n" } } And iscsid.conf : node.startup = automatic node.session.timeo.replacement_timeout = 15 node.conn[0].timeo.login_timeout = 15 node.conn[0].timeo.logout_timeout = 15 node.conn[0].timeo.noop_out_interval = 5 node.conn[0].timeo.noop_out_timeout = 10 node.session.iscsi.InitialR2T = No node.session.iscsi.ImmediateData = Yes node.session.iscsi.FirstBurstLength = 262144 node.session.iscsi.MaxBurstLength = 16776192 node.conn[0].iscsi.MaxRecvDataSegmentLength = 262144 After my tests; i can barely come to 200 Mb/s read/write. Should I expect more than that ? Providing it has dual 10 GbE my thoughts where to come around the 400 Mb/s. Any ideas ? Guidelines ? Troubleshooting tips ?

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• IPv6 Routing / Subnetting

  - by nappo

  Recently I have installed Citrix Xen Server 6.2 on a machine. My Provider (Hetzner) gave me the IPv6 Subnet 2a01:4f8:200:xxxx::/64. Followed an article in the providers wiki (1) i got it working and can assign IPs to my guests (CentOS). However i can't assign a second IP to a single guest - it will result in a timeout. I'm not very familiar with IPv6 routing / subnetting - any help or tips for further troubleshooting is welcome! My Setup: XenServer 6.2 IPv6: 2a01:4f8:200:xxxx::2/112 ip -6 route: 2a01:4f8:200:xxxx::/112 dev xenbr0 proto kernel metric 256 mtu 1500 advmss 1440 hoplimit 0 fe80::1 dev xenbr0 metric 1024 mtu 1500 advmss 1440 hoplimit 0 default via fe80::1 dev xenbr0 metric 1024 mtu 1500 advmss 1440 hoplimit 0 Guest 1 IPv6: 2a01:4f8:200:xxxx::3/64 IPv6: 2a01:4f8:200:xxxx::4/64 ip -6 route: 2a01:4f8:200:xxxx::/64 dev eth0 proto kernel metric 256 mtu 1500 advmss 1440 hoplimit 4294967295 fe80::/64 dev eth0 proto kernel metric 256 mtu 1500 advmss 1440 hoplimit 4294967295 default via fe80::1 dev eth0 metric 1 mtu 1500 advmss 1440 hoplimit 4294967295 Guest 2 IPv6: 2a01:4f8:200:xxxx::5/64 Guest 1 IPv6 is working fine, Guest 2 too. As suggested by the wiki article (1) i split my /64 network into a /112. Is it right to set the host /112 and the guests /64? Why is that?

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• Edubuntu video playback and apt-get

  - by asdasd

  They had installed some modified edubuntu's at school... So i have some questions about setting some things up: How we can play HD videos ? They are made for windows machines and are in .wmv format but we need to play them on our multimedia class but don't know how - which player, which codecs etc. How to edit properly the /etc/apt/sources file ? Anything we try to install via apt-get it just says that E:\ is not available. Please tell me which repositories to put in there so we could be able to install some tools. Where are usually viruses/trojans put in ubuntu ? I mean in which directories ? Because our computers are behaving really slow and we need to check for some malware manually - we are not even allowed to install any kind of AV software. So tell me the usual directories and places for hiding such files, how are they hiddem, how to recognize them etc. Any others nice tricks/tips that we need to know. Thank you very much in advance.

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• Can't get intel atom g-500 video driver to work with ubuntu 10.10 netbook edition.

  - by Matthew

  First of all I am completely new to Linux, so if you respond, please do so in a 'linux for dummies' tone so that my brain will be able to process it. I recently installed ubuntu on my dell mini-inspiron 1010. It has one GB of ram and an intel atom processor that uses the intel 500 graphic accelerator driver for windows and can run 1024x768 comfortably in xp. When I was installing ubuntu had quite a bit of trouble with my display and I am still unable to adjust my settings from 800x600x0x0 and there is no hardware acceleration. I visited the intel site and installed the linux drivers with the help of a friend but still no change. I tried adding resolution settings through xconf but they could not be applied even after I added the values. I am probably going about this totally wrong, but I've spent quite a lot of time browsing through forums and still haven't found a solution. Any help would be greatly appreciated. Also any other beginner tips that you have would be much appreciated. Thanks in advance, Matt

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• How to troubleshoot when one has no idea where to start?

  - by Chris Walton

  I am looking for hints, tips and answers on how to get started on troubleshooting when: The problem is intermittent The problem could lie literally anywhere - operating system; free source software; my own software developments; purchased software; crumbs on the keyboard; the specific combination of software I am currently running; Maxwell's demon; the little blue men actually running the machine have gone on strike; etc. I have expertise only in a few of the areas that are potential candidates for the cause of the problem. The specific problem I am having is detailed below as an example, but I am not seeking answers to my current problem, but rather where and how to start on tackling such problems. I am currently encountering a problem with my new machine. On a few occasions the machine has just frozen; not accepting keystrokes, mouseclicks, or anything except the power on/off switch. Invariably I have been merely browsing the web; I have had a few (<= 6 other applications) running. None of these applications are major; and represent a mix of commercial programs and open source programs, typically migrated from Unix of some variety. My machine is a Windows 7 I7 quad core laptop.

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• Vim - Displaying Code Output in a New Window á la Textmate?

  - by Michael Density

  A few months back I switched from Textmate to Vim. Overall I really love Vim, but one of the things I miss from Textmate is using the ⌘R command to run Ruby code and having the results neatly pop up in a new, scrollable window. Obviously, Vim is capable of running Ruby code and displaying the output with :w !ruby. The only downside to this is that if the resulting output is too long I can't scroll through it. To combat this problem I tried modifying a :redir function from Vim Tips. It looks like this: function! TabNew(cmd) redir => message silent execute a:cmd redir END tabnew silent put=message set nomodified endfunction command! -nargs=+ -complete=command TabNew call TabNew(<q-args>) Now the output from Ruby is put into a new tab. However, I can't get it to pop up in a new, separate window. Changing tabnew to new just sends the output to a split in the same window. The other problem is that a visible ^M gets appended to the end of each line, so the output ends up looking like this, which is kind of bothersome: Hello World!^M So, is there any way to get the output into a separate window without the ^M appended to the end? Are there any plugins I should be trying to achieve this Textmate-like effect for code output?

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• IIS replication - Is it possible

  - by Ian

  Hi All, I have a requirement for a client that I have a centralised system that all his satellite branches can work on. Currently this is a ASP.net web forms app running under IIS 7 on win 2008 RC 2 using an SQL backend. The client has now requested that each branch have a local server, so that in the event that the internet connection is down, the branches productivity does not suffer. His other request is that everything can be updated via the central hub and using some mechanism the updates filter down to the individual sites. What are my options here? I see the following as possible options: Multiple redundant internet connections controlled by load balancers SQL replication for the DB (What is better, snapshot, merge or transactional) Roll my own IIS sync service the periodically checks if there is a new version of the web app and downloads it (I hope there are better option than this) Something way better I don’t yet know about (I hope this is the one I need) One of my clients concerns are that the branches are often in very remote areas where everything from technicians to internet is hard to find and very scarce. Any ideas, suggestions, tips etc are welcome. Thanks all

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• Using URL rewrite module for http to https redirect

  - by johnnyb10

  Following ruslany's suggestion on the URL Rewrite Tips page here, I'm trying to use URL Rewrite to redirect http:// requests for my site to https://. I've written and tested the rule using a test site I set up, and so now the final piece is to create a second site (http) to redirect to my https site. (I need to use a second site because I don't want to uncheck the "Require SSL encryption" checkbox on my existing site.) I'm an IIS newbie so my question is: how do I do this? Should I create a site with the same name and host header, only it will be bound to http? Will IIS let me create a site with the same name? I don't want to screw anything up with my existing site (which is a SharePoint site, currently used by external users). That site currently has http and https bound to it. So my assumption is that, using ISS (not SharePoint), I will create a new site (http only) with the same name and host header as my existing site, and add the URL Rewrite rule to the http site. And then I guess I should remove the http binding from my existing site? Does that seem correct? Any advice, gotchas, etc., would be appreciated. Thanks.

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• iSCSI performance questions

  - by RyanLambert

  Hi everyone, apologies for the long-winded post in advance... Attempting to troubleshoot some iSCSI sluggishness on a brand new vSphere deployment (still in test). Layout is as such: 3 VSphere hosts, each with 2x 10GB NICs plugged into a pair of Nexus 5020s with a 10gig back-to-back between them. NICs are port-channeled in an active/active redundant fashion (using vPC-mac pinning for those of you familiar with N1KV) Both NICs carry service console, vmotion, iSCSI, and guest traffic. iSCSI is on a single subnet/single VLAN that is not routed through our IP network (strictly layer2) Had this been a 1gig deployment, we probably would have split the iSCSI traffic off onto separate NICs, but the price/port gets rather ridiculous when you start throwing 4+ NICs to a server in a 10gigabit infrastructure, and I'm not really convinced it's necessary. Open to dialogue/tech facts re: this, though. At this point even a single VM guest will boot slowly to iSCSI storage (EMC CX4 on the same Nexus 5020 10gig switches), and restores of VMs from iSCSI take about twice as long as we'd expect them to. Our server folks mentioned that if we split the iSCSI off onto its own NIC, performance seems significantly better. From a network perspective, I've run through the variables I can think of (port configuration errors, MTU problems, congestion etc.) and I'm coming up dry. There really is no other traffic on these hosts other than the very specific test being performed at the time. Important thing to note is that guest traffic works just fine... it seems storage is the only thing affected by whatever gremlin exists. Concluding that we're not 'overutilizing' the network infrastructure since we're doing hardly anything, I'm just looking for some helpful tips/ideas we can use to resolve this... preferably without hurling extra 10gig NICs that are going to sit around 10% utilization while we've got 70+% left on our others.

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• Archive Manager, SQL 2005 and MaxTokenSize high CPU

  - by Tim Alexander

  So, I posted this question a few days ago: Impact of increasing the MaxTokenSize for Kerberos Tickets Since then the thought was to test our settings on two member servers, one with IIS and one without. I setup two GPOs to configure the MaxTokenSize reg setting to 48000 and MaxFieldLength/MaxRequestBytes to 64200 (based on MS KB2020943, these are set at 4/3 * T + 200). The member server seemed to work ok (a devalued tape backup server). The IIS server however has had some strange repercussions. The IIS Sserver host Quest Software Archive Manager (AM) 4.5 that communicates with SQL Server 2005 Enterprise on Server 2003 R2. After the changes all looked good until the SQL Server hit 100% CPU. I have removed the GPOS, removed the reg values and even replaced them with defaults (12000 for token size and can't remember the other one but was in a blog post about the issue in my other post). No change. Bouncing the IIS Server stops the high CPU and a colleague has looked at the SQL server and it is definitely the AM connection taking up the time/work on the SQL server. I haven't changed the reg values on the SQL server or the DCs but am reluctant to do so without understanding why this has happened. I am guessing its to do with the overriding auth and group issue we have but I am not seeing Kerberos errors in either event log. Has anyone seen something similar or does anyone have some tips? Was definitely blindsided by the Kerberos issue and am swimming against the tide to keep things functioning.

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• Forcing users to change password on first login - Windows Server 2008 R2 Remote Desktop Services

  - by George Durzi

  I'm setting up a demo lab environment in which each demo lab user is assigned 4 accounts to use in the lab. Users access the lab via Remote Desktop to the "client" machine in the lab - exposed at demolab.mydomain.com. The Client machine is a Windows 2008 Server R2 Enterprise Edition server The Remote Desktop Services role is configured on this server Remote Connection settings are configured to allow users to connect with any version of the Remote Desktop Client All accounts are members of the local Administrators and Remote Desktop Users groups All accounts are configured to be forced to change the default password after first login The user is instructed to remote into the lab with an account designated as their main account, and establish 3 more remote desktop sessions within the lab using their 3 other assigned demo lab accounts. When establishing the initial remote desktop connection to the lab using their main account, the user sees the change password dialog as expected. However, after logging in and trying to establish remote desktop connections to the server with their three other accounts, they are prompted that they need to change the password after logging in but can't continue with the login process - they don't see the expected change password experience. After logging in with a primary accounts, it doesn't make a difference if I try establishing a Remote Desktop connection to the environment using the name of the server, e.g. Client, or demolab.mydomain.com. I experimented with changing the settings for Remote Connections to require NLA but that didn't make a different. Appreciate any tips. Thanks

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• MySQL is killing the server IO.

  - by OneOfOne

  I manage a fairly large/busy vBulletin forums (running on gigenet cloud), the database is ~ 10 GB (~9 milion posts, ~60 queries per second), lately MySQL have been grinding the disk like there's no tomorrow according to iotop and slowing the site. The last idea I can think of is using replication, but I'm not sure how much that would help and worried about database sync. I'm out of ideas, any tips on how to improve the situation would be highly appreciated. Specs : Debian Lenny 64bit ~12Ghz (6 cores) CPU, 7520gb RAM, 160gb disk. Kernel : 2.6.32-4-amd64 mysqld Ver 5.1.54-0.dotdeb.0 for debian-linux-gnu on x86_64 ((Debian)) Other software: vBulletin 3.8.4 memcached 1.2.2 PHP 5.3.5-0.dotdeb.0 (fpm-fcgi) (built: Jan 7 2011 00:07:27) lighttpd/1.4.28 (ssl) - a light and fast webserver PHP and vBulletin are configured to use memcached. MySQL Settings : [mysqld] key_buffer = 128M max_allowed_packet = 16M thread_cache_size = 8 myisam-recover = BACKUP max_connections = 1024 query_cache_limit = 2M query_cache_size = 128M expire_logs_days = 10 max_binlog_size = 100M key_buffer_size = 128M join_buffer_size = 8M tmp_table_size = 16M max_heap_table_size = 16M table_cache = 96 Other : > vmstat procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 9 0 73140 36336 8968 1859160 0 0 42 15 3 2 6 1 89 5 > /etc/init.d/mysql status Threads: 49 Questions: 252139 Slow queries: 164 Opens: 53573 Flush tables: 1 Open tables: 337 Queries per second avg: 61.302. Edit Additional info.

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• Router drops internet connection if I connect an additional pc

  - by BluePerry

  Hey, I'm using a SMC2804WBRP-G router connected to my ADSL-modem. Usually there are two computers connected to this router: a win7 ultimate desktop(wired) and a macbook air (wireless). Both working absolutely fine and never caused any connection drops as far as I know. A new room mate moved in last month and each time she starts up her win7 home laptop the router looses the internet connection. The laptop is on a wired connection. The first time she connected to my router, the connection dropped every 2 mins. To find out whats wrong with her machine I disabled all unnecessary services etc. besides the anti virus software. That helped to eliminate almost all of those periodic connection drops. But the start up drop remained and I've got the feeling that the router is still loosing connection from time to time. I haven't had the time to find out what service caused the periodic drops. But I'm more concerned about is that start up drop. Can anyone point me in the right direction to look for the problem? I would be very thankful for any hints or tips!

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• Own server, multiple website: most secure PHP setup

  - by plua

  Hi there, We have a company server with a variety of websites. They are maintained by different people from within our company. All websites are public. The server access is limited to our company only. This is NOT a shared hosting environment. We are looking into securing the server, currently analyzing the risk related to permissions of files. We feel the highest risk is when files are uploaded and then opened/executed by the public. This should not happen, but an error in a script might allow people to do so (there are image uploaders, file uploaders, etc). Uploader scripts use PHP. So the question is: what is the best way of setting / organizing permissions of files and processes? There seem to be several options to run PHP (and Apache), and setting the permissions. What should we take into consideration? Any tips? We are considering mod_php and FastCGI, but perhaps given our situation other solutions are preferred?

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• How to interrupt software raid resync?

  - by Adam5

  I want to interrupt a running resync operation on a debian squeeze software raid. (This is the regular scheduled compare resync. The raid array is still clean in such a case. Do not confuse this with a rebuild after a disk failed and was replaced.) How to stop this scheduled resync operation while it is running? Another raid array is "resync pending", because they all get checked on the same day (sunday night) one after another. I want a complete stop of this sunday night resyncing. [Edit: sudo kill -9 1010 doesn't stop it, 1010 is the PID of the md2_resync process] I would also like to know how I can control the intervals between resyncs and the remainig time till the next one. [Edit2: What I did now was to make the resync go very slow, so it does not disturb anymore: sudo sysctl -w dev.raid.speed_limit_max=1000 taken from http://www.cyberciti.biz/tips/linux-raid-increase-resync-rebuild-speed.html During the night I will set it back to a high value, so the resync can terminate. This workaround is fine for most situations, nonetheless it would be interesting to know if what I asked is possible. For example it does not seem to be possible to grow an array, while it is resyncing or resyncing "pending"]

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• Cannot Install Phusion Passenger 3.0.13 with Nginx 1.2.1

  - by LightBe Corp

  I installed gem Passenger which installed 3.0.13. Then I executed passenger-install-nginx-module which is what the Nginx instructions on http://www.modrails.com said to do. It installs the latest stable version which is 1.2.1 according to the Nginx official wiki page. I said to install Nginx to /usr/local/nginx (which is the default if you go to the nginx wiki website). I get the following errors: Undefined symbols for architecture x86_64: "_pcre_free_study", referenced from: _ngx_pcre_free_studies in ngx_regex.o ld: symbol(s) not found for architecture x86_64 collect2: ld returned 1 exit status make[1]: *** [objs/nginx] Error 1 make: *** [build] Error 2 -------------------------------------------- It looks like something went wrong Please read our Users guide for troubleshooting tips: /Users/server1/.rvm/gems/[email protected]/gems/passenger-3.0.13/doc/Users guide Nginx.html If that doesn't help, please use our support facilities at: http://www.modrails.com/ We'll do our best to help you. I have done searches for several hours trying to find a resolution. I tried the Google Group for Phusion Passenger but did not find anything. I do not know if there is a mismatch in version numbers or not. The documentation says nothing about this error.

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• Using URL rewrite module for http to https redirect

  - by johnnyb10

  Following ruslany's suggestion on the URL Rewrite Tips page here, I'm trying to use URL Rewrite to redirect http:// requests for my site to https://. I've written and tested the rule using a test site I set up, and so now the final piece is to create a second site (http) to redirect to my https site. (I need to use a second site because I don't want to uncheck the "Require SSL encryption" checkbox on my existing site.) I'm an IIS newbie so my question is: how do I do this? Should I create a site with the same name and host header, only it will be bound to http? Will IIS let me create a site with the same name? I don't want to screw anything up with my existing site (which is a SharePoint site, currently used by external users). That site currently has http and https bound to it. So my assumption is that, using ISS (not SharePoint), I will create a new site (http only) with the same name and host header as my existing site, and add the URL Rewrite rule to the http site. And then I guess I should remove the http binding from my existing site? Does that seem correct? Any advice, gotchas, etc., would be appreciated. Thanks.

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• Multi monitor setup with a tv as well?

  - by jasondavis

  I have always had a dual monitor setup for my pc's for years now. I am now in the market to build a new PC and get some new stuff. I need some help or advice on how to run 3 monitors WITH a 4th display which will be a lcd/plasma tv. So I am thinking I can get 2 video cards and that will give me all the hookups to run 3 monitors instead of 2. I will mount all 3 monitors in a row side by side and above them on the wall I would like to mount a larger 30-40+ inch lcd or plasma tv. I would then like to hook up my atelite/cable to this tv just as I would normally hook up a tv but I would like to also be able to have an option to view my PC o this tv as well. I know that is possible but would it be possible to view my PC on that tv and also still view my 3 other monitors and have the TV be a 4th display, where I could dock a different app/window in windows in all 4 displays (3 monitors + tv) ?? Please tell me any tips/advice on how to do this including what cables/software if any/converters/ you name it. Thanks for any help

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