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• Why is only one wget command working in my crontab?

  - by afEkenholm

  I wish to fetch content from a PHP script on my server two times a day, altering a query variable lang to set what language we want, and save this content in two language specific files. This is my crontab: */15 * * * * ~root/apache.sh > /var/log/checkapache.log 10 0 * * * wget -O /path/to/file-sv.sql "http://mydomain.com/path/?lang=sv" 11 0 * * * wget -O /path/to/file-en.sql "http://mydomain.com/path/?lang=en" The problem is that only the first wget command line is being executed (or to be precise: the only file that is being written is /path/to/file-sv.sql). If I switch the second and the third row, /path/to/file-en.sql gets written instead. The first line always runs as expected, no matter where it is. I then tried using lynx -dump "http://mydomain.com/path/?lang=xx" > /path/to/file-xx.sql to no avail; still only the first lynx line executed successfully. Even mixing wget and lynx did not change this! Getting kinda desperate! Am I missing something? There are thousands of articles on crontab (combined with) wget or lynx, but all seems to cover basic setups and syntax. Does anyone got a clue of what I am doing wrong? Thanks, Alexander

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• IPTABLES syntax help to forward Remote Desktop requests to a VM [CentOS host]

  - by NVRAM

  I've a VM running MSWindows XP hosted on my CentOS 5.4 machine. I can rdesktop into it from the hosting machine and work just fine using the private ddress (192.168.122.65), but I now need to allow Remote Desktop access from other computers (not just the machine hosting the VM). [Edit] I only need to allow access for a day or so, so don't want to add a NIC (for XP activation reasons). Could someone help me with the iptables syntax? The VM is on a private/virtual network: 192.168.122.65 and my CentOS machine is on a physical network, at 10.1.3.38 (and 192.168.122.1 as the GW for the virtual net). I found this question, but none of the answers seemed to work and I'm a bit timid at blindly trying variations. My FORWARD rules are as listed. Thanks in advance. # iptables -L FORWARD Chain FORWARD (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere 192.168.122.0/24 state RELATED,ESTABLISHED ACCEPT all -- 192.168.122.0/24 anywhere ACCEPT all -- anywhere anywhere REJECT all -- anywhere anywhere reject-with icmp-port-unreachable REJECT all -- anywhere anywhere reject-with icmp-port-unreachable RH-Firewall-1-INPUT all -- anywhere anywhere [Edit] If I do play "blindly" is there a simple way to reset the settings on CentOS (a la service network restart)?

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• Powershell Script Scheduled Task Stopped Running (Could not Start)

  - by Hatsune Yuki

  I'm running a scheduled task (for Powershell Script) on Windows 2003 Server. I believe the script works fine. The task is scheduled to run every 10 minutes from 7:00am to 11:50pm everyday. However, it never gets to run more for than a day. It always stops some time in the afternoon (between 2pm and 6pm). I'm not sure exactly what happened but I always get the error The attempt to log on to the account associated with the task failed, therefore, the task did not run. The specific error is: 0x80070569: Logon failure: the user has not been granted the requested logon type at this computer. Verify that the task's Run-as name and password are valid and try again. It seems like most people with this error are saying that they need to make user "logon as a batch job". However, this option is greyed-out for me. I search for other places where users have similar problems but the solutions are not written in detail (some of them have something to do with GPO). I've only used the basic features of Windows Server and I have no clue how to get to the place they are referring to. Can someone please confirm whether "logon as a batch job" is indeed a solution and provide a detailed walkthrough on how to solve my problem? Thanks. p.s. someone suggested the website http://technet.microsoft.com/en-us/library/cc755659(v=ws.10) I tried to followed the method for web server with domain. However, got stuck on the 6th step where it mentions Group Policy Object. I don't know where it is.

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• Azure Virtual Machines - what fault tolerance do they provide?

  - by Borek

  We are thinking about moving our virtual machines (Hyper-V VHDs) to Windows Azure but I haven't found much about what kind of fault tolerance that infrastructure provides. When I run VHD in Azure, I've got two questions: Is my VHD and all the data in it safe? I think that uploaded VHDs use the "Storage" infrastructure so they should be automatically replicated to multiple disks and geographically distributed but should I still make a full-image backup just to be safe? (Note that of course I will be backing up the actual data inside VMs that I care about; I just want to know if there is a chance greater than 0.0000001% that one day I will receive an email from Microsoft telling me that my VM is gone and that I should create or restore it from scratch). Do I need to worry about other things regarding the availability of my VMs? I mean, when I have an on-premise server I need to worry about the hardware itself, about the host operating system, what would happen if my router failed, if my Hyper-V's C: drive failed etc. Am I right in thinking that with Azure, their infrastructure takes care of all of this? Thanks.

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• Which steps are required to avoid my server being considered as spam sender?

  - by Cyril N.

  I'm looking to set up a webmail server that will be used by a lots of users that will receive and send emails. They will also have the possibility to forward emails they receive. I'd like to know which steps are recommanded/required to indicate to others Mail services (GMail, Outlook, etc) that my server is not used as a spam sender (disclaimer : IT's NOT ! :p) but a legitimate one. I know I have to define a SPF TXT records for example, but what others steps would you recommend me to do ? For example, is there a formula like having a proportional number of servers based on the amount of email sent (for having a different IP address) ? (something like sending a maximum of 1M emails / per IP / per day ?) Something else I'm missing ? I tried to search online, but I mostly find how to avoid emails sent with scripts (like PHP) being put in the SPAM folder. I'm looking for a server/dns configuration side. Thanks a lot for your help/tips, I appreciate !

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• NGINX: How do I calculate an optimal no. of worker processes and worker connections?

  - by bodacious

  Our web app is running on a Linode 2048 server at the moment (~ 2048 GB of RAM) The MYSQL database is on another linode of it's own so this server is really only handling NGINX and and the Rails application. The application itself uses about 185976 of memory per instance (RSS). Our traffic is < 1000 per day and the pages are mostly cached so there are fewer hits to the rails app itself. My question is - how can I calculate optimal NGINX config settings for my app? Below is the current config: worker_processes 1; # pid of nginx master process pid /var/run/nginx.pid; events { worker_connections 1024; } http { access_log /var/log/nginx/access.log; error_log /var/log/nginx/error.log; passenger_root /home/user/.rvm/gems/ree-1.8.7-2011.01@URTV/gems/passenger-3.0.3; passenger_ruby /home/user/.rvm/rubies/ree-1.8.7-2011.01/bin/ruby; include mime.types; default_type application/octet-stream; sendfile on; tcp_nopush on; tcp_nodelay on; # gzip settings gzip on; gzip_http_version 1.0; gzip_comp_level 2; gzip_vary on; gzip_proxied any; gzip_types text/css application/x-javascript text/xml application/xml application/xml+rss text/javascript; # load extra modules from the vhosts directory include /opt/nginx/vhosts/*.conf; } Any advice would be appreciated! :)

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• Vista: window focus problem

  - by GateKiller

  Sorry for the vague title but this one is hard to explain so bear with me please. I'm using Windows Vista at work for web development and sometimes when I Click or Alt-Tab to background window, the window will get focus but it will not be brought to the front. In order to bring the window to the front, I have to click on the applications border (when the resize cursor appears) and the window will then jump to the front. I've had this problem for about a year now and it happens at least a dozen times a day, but it doesn't do this all the time - seems random. I hope I have explained the issue fully (and you've understood it) and would appreciate any constructive answers or comments to solve this problem. Example: If I Alt-Tab from Google Chrome to Notepad and this problem randomly occurs, Google Chrome will remain in front of Notepad, however, I will be able to type text into Notepad while the window is behind Google Chrome. Clicking on Notepad's content area will not bring it to the front but clicking it's window border will. Video Exampe http://vimeo.com/19388998 In this video, I clicked from Google Chome to UltraEdit and chrome stayed in font, but as you can see, I can still type in UltraEdit. I'm starting to believe that this could be a bug in Google Chrome so I'll continue to watch if this between other applications.

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• Motorola Surfboard SB6121 modem conected to 2WIREi38HG wireless router but there's no internet access

  - by Jessica

  I have just switched to Comcast cable internet from AT&T Uverse and I was hoping to use the 2WIRE wireless router with the new Surfboard modem so I can have wireless access. I messed around with some settings and got it working for my laptop (I'm not terribly well versed in computer stuff; I think it was mostly luck) for about a week. The other day I tried to get online and there was no internet connection. I restarted the equipment with no success and then plugged the modem directly into the laptop. This worked, so I knew there was no outage. I connected the ethernet cord to the router and a second cord to my laptop and that worked, too. But when I tried again just with the wireless the laptop connects to the router, but doesn't recognize it or find an internet connection. I tried to go to http://gateway.2Wire.net to fiddle with the settings, but all I get is a Server Not Found page. I tried to check the ip address but this is really kind of over my head and I get different things checking it while plugged into only the modem vs when I plug into the router. Can anyone help? The frustrating thing is that I had it working for awhile, so I know it can do it!

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• Apache using 100% CPU, once again

  - by CBenni

  Recently, apache2 started using 100% of CPU power: top gives me From other, similar threads, I took the tip to use mod_status. Aside from HUGE amounts of NULL requests, it gives: CPU Usage: u2.16 s1.32 cu0 cs0 - .0835% CPU load 1.2 requests/sec - 17.6 kB/second - 14.6 kB/request 8 requests currently being processed, 42 idle workers The access and error logs do not show anything surprising or intriguing at all. Note the .8% CPU usage. Another tip was to use strace: root@server:~# strace -p 1956 Process 1956 attached - interrupt to quit restart_syscall(<... resuming interrupted call ...> And remains like this for at least half an hour, without producing any additional output. Restarting apache fixed the problem for less than a second The server runs a few custom python scripts aswell as a django-powered website on apache2 (up-to-date), but even turning the scripts off (or not having them active in the first place) did not change anything. After I stopped apache and powered my server off, powered it on a few minutes afterwards and restarted all my services, the CPU usage remained low for several hours, just in order to pop up again randomly (?) The DigitalOcean CPU stats on my server are: You can see how the CPU usage was super high for almost half a day until I restarted the bot - just to remain stable for several hours and then pop up again. I am completely at a loss of words and don't know what I could do to find out what piece of my code is giving me these problems or if apache itself is the cause... Therefore I would greatly appreciate any hints to the questions: What else can I try to do? Which things might I not have checked? Is this definitely in my own code? How do you find what part of python code crashes an app via a infinite loop or similar?

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• why would resetting the Netgear N300 router fix my Win 7 laptop's slow wifi?

  - by rjnagle

  In the past day the wifi download speeds of my Win 7 HP 64 bit laptop have slowed considerably. I am trying to troubleshoot the problem and to figure out whether it's hardware related (i.e., is the Intel(R) Centrino(R) Wireless-N 2230 the problem?) or router related. I have a Netgear N300 router connected to my modem. I'm using Speedtest to measure my speed. First, during my problem state, my ipad can download and upload at normal speeds. It's only my Win 7 laptop which is having problems. Because my ipad downloads at normal speeds, that would tell me that the problem is specific to the laptop (either HW or SW). But when I restarted my Netgear router, the laptop wifi problems disappeared. That just doesn't make sense. If we know that one device can connect properly to the router, why would a laptop have problems? What are some possible reasons why this might happen? Also, during my problem state, I noticed that on my laptop upload speeds were faster than my download speeds. Anybody have a guess about what might cause upload speeds on one device to be faster than another? Is there any actions i could take (or options to enable) so this problem won't occur. (I initially thought my problem might be software related or memory related -- Norton AV or browser plugins. But even after I disabled everything and made sure memory footprint was minimal, the slowdown was still occurring -- and it solved itself altogether when the router was reset).

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• GroupWise 6.5 IMAP Service Shuts Down-Needs Constant Restarting

  - by Jeffrey Majette

  I have an issue with my aging (and soon to be replaced) GroupWise 6.5 system. The IMAP service in the GWIA tends to periodically shut down, requiring that I restart the service. When IMAP is down, my end users who use Blackberry BIS cannot send or receive email on their devices. It's a royal pain to have to restart the IMAP service several times a day. The GWIA logs do not seem to indicate a problem. I thought I was on to something yesterday. I discovered that the gwia.cfg file located in SYS:SYSTEM was actually from GW 6.0. The gwia.cfg in DOMAIN\WPGATE\GWIA was titled for GW 6.5 when opening the file for editing. I changed the generic placeholder info in the file to match my environment and restarted the gwia. However, it made no difference in performance. The IMAP service shuts down about 30 minutes after the last restart. I know this version of GW is antiquated. We are in the process of migrating to Google Apps. But, if anyone has an idea that could fix this issue, I and my end user community would be forever grateful!

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• Did my hard drive fail or is it something else?

  - by Julian

  Last night while I was watched a movie on my laptop the external monitor just went blank and the built-in display froze. Weird I thought, so I restarted it only to be greeted with this heart-breaking message. "No Operating System Found". After a few panicked restarts I accepted the fact that my hard drive might be done :(. Being the resourceful technie that I am, I whipped out Ubuntu Live on my old Flash Drive and was up and running before day break. I cannot access the hard drive through Ubuntu (which I expected) but I also cannot access my DVD drive either! This got me thinking that it might not be the hard drive and some other component that they hdd and the dvd uses. Hopefully this is the case. Which component is the most likely culprit? What tools can I use from Ubuntu Live on my USB flash drive to find out? I'm in a bad place without my hdd, thanks in advance for any assistance provided! P.S. My laptop makes a weird noise when I try to access or eject my DVD within the slot. Also my HDD makes a weird noise sometimes. Not sure how to describe it. System Specs: Dell 1558

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• Onboard Ethernet suddenly stopped working to router

  - by AfterschoolHobbist

  Hey guys, yesterday I have a sudden problem of my Ethernet connection to my router. My computer is a Pendium 4 with Window XP SP3 running on it and it was working fine earlier in the day, but yesterday night was the start of the problem. My computer is unable to ping to the router and to any other website and unable to get internet connection. As beside it was connected to a hub, I directly connected it to the router directly and the same problem occurred, being unable to ping to the router (and connecting to it) and still no internet access. My directly connected to the modem and the problem still persisted. For each connection, I connected it to my computer and my laptop and my laptop was able to connect, while my desktop computer was unable. I wondered if it was a OS issue and ran a live Ubuntu CD to see if Ubuntu was able to connect to the internet, but the issue persisted and I was unable to get internet access. I then set my router's lease time to 1 hour and waited. After 1 hour, the lease for my computer was removed and I hoped this worked, but it didn't work, but something strange is acting up. My desktop computer is still unable to ping to the router or connect to the internet, but for some reason, my router and desktop computer is still able to contact each other by providing a lease of an local ip address. The router record of a lease to my desktop computer, and when I do ipconfig, my desktop also recognize that it has been provided a local ip address. I have concluded that this is a hardware issue and the only solution to fix this is to by a network card adapter, but I am wondering if anyone has any solutions that could explain why this happen, why my mac address is 01-23-45-67-89-ab, and is there any way to fix it without buying a new network card? Thanks in advance.

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• Data loss by randomly unplugging the computer during runtime

  - by Kan

  I'm from Austria and we and the Germans have some sort of bad science-show which runs every day. What I call it would rougly translate to "half-knowledge" if you want so. By the way: It is called "Galileo". So they thought they'd make a computer myth busters video right now, and I couldn't believe what I saw and heard... The strangest thing to me was that they asked: "Does unplugging the computer damage your data?" Then they started up some machine with Vista on it, started copying some files and randomly unplugged the PC cable, the whole thing around 50 times. After their computer continued to start up normally, they just said "nothing can happen, your data or computer can't be damaged". They of course excluded unsaved data in running programs like text editors from this. I asked myself: What the hell are their "computer experts" saying? You can't tell by unplugging the cable 50 times if that can damage your computer. Can unplugging the cable during runtime cause data loss (as said by the moderator of the show)? (I destroyed my windows registry once during a reset)

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• ADSL2+ - High sync-rate, good line attenuation, but low noise margin and slow speeds

  - by Mark Pim

  I've been with my ISP (IdNet) for a few months and have been getting some good speeds, but in the last week the speed has dramatically decreased (from 15 Mbps+ to around 0.2 Mbps). This happens at all times of day, not just peak periods. Obviously I've done all I can to isolate problems my end - only one PC is connected to the router (via ethernet cable) and no other background programs are using the network etc. I've raised the issue with the ISP and they've suggested trying a new ADSL filter to see if that is casuing the problem, but I thought it would also be good to get the opinion of superuser on possible causes or other troubleshooting I can do. Here are the juicy stats :) My router (Netgear DGN1000) reports: Downstream Upstream Connection Speed 17602 kbps 1062 kbps Line Attenuation 17.9 db 8.6 db Noise Margin 6.0 db 6.1 db I used RouterStats and it seems to show those figures stay fairly consistent all the time I ran the BT speedtest and it reported: download speed of 164 kbps, out of a max achievable of 21000 kbps upload speed of 859 kbps, out of 1048 kbps DSL connection rate 17719 kbps down and 1048 kbps up IP Profile of 15000 kbps Is there any more troubleshooting I can do? Does this look like a problem with my equipment / wiring or with BT's line? Any advice would be great :)

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• One workstation gets slow access to the server, but others are fast

  - by Mike Hanson

  I've just setup a machine with Windows Server 2008. It hosts various services, like IIS, POP3, SMTP, Music for Squeezeboxes, VNC. All was working well for the first week or so. One day I needed to create a mapped drive on the server, so it could access files on my workstation. Windows indicated that Network Discovery was needed, so I turned it on with the "Home / Office" option (rather than "Public"). This may be coincidence, but since that time I've been having troubles accessing various services from my main workstation (running Windows 7/64): POP3 continued working correctly, but SMTP was delayed or failed entirely. (Telnet took 20 seconds to connect, but Outlook would never send messages.) VNC failed entirely. I reinstalled it on the server, and now it works but feels sluggish. The music web server was extremely delayed and usually failed. I tried reinstalling, and now it takes about 30 seconds to show the page name on the browser tab, and another 30 seconds to display any page contents. Other machines on the local network seem fine, as do machines connected via the Internet. I don't believe I changed anything on my own machine that would cause this. I considered the possibility that my anti-virus was involved, so I uninstalled AVG (commercial version), but that didn't help. I installed Norton 360 after that, and it didn't complain of viruses on my machine, and the delays remained. Because only my machine is affect, I'm tempted to blame it, except that reinstalling software on the server improved the situation, so there is almost certainly something going on with the server too. The firewall has all the necessary ports open, and it works fine for the other workstations (including external machines connected via the Internet), which indicates that it should be OK. Any ideas?

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• Can a non-redundant RAID5 cause any serious problems (compared to RAID0)?

  - by leemes

  I used to have a three-disc RAID5 (mdadm) in my computer for personal media storage (music, videos, photos, programs, games, ...). It had three discs with 750 GB each, resulting in an array capacity of 1.5 TB. One day (one year ago), I needed one of those discs to install another operating system. I thought, I don't need the redundancy anymore since I backup the most important stuff (personal photos e.g.) on an external disc anyway. So I decided to remove one of the three discs without converting the RAID to RAID0 or even two separate discs, because I had no temporary storage (since one cannot simply convert the RAID5 to RAID0 AFAIK). So now, for about one year, I have a non-redundant RAID5 with 2 of 3 discs running. Sometimes, one of the discs has a defective contact at the power cable or something similar causing the drive to stop working temporarily (I don't know exactly what it is). Since it still works when rebooting the computer and in most cases by calling some mdadm commands, it wasn't that problematic. Note that the data is not very critical, since I still have a backup of the most important stuff. But in the last few weeks, one of the drives fails very frequently (every few hours), so it gets really annoying to manage this. My questions are: Is there any disadvantage (apart from the annoying management) of a non-redundant RAID5 (with one drive less than typical) over a RAID0? If I understand it correctly, both have no redundancy and the same capacity. On a temporary drive failure, I can restart the array in both cases, assuming that the drive itself still works after the failure. Can it happen that the drive contents alter on a drive failure, making the array inconsistent? If so, can I tell mdadm to check the array for failures (without a file system level checking tool)? Since the drive most probably only has a defective contact causing it to fail for a second only, can I tell mdadm to automatically restart the array, so I will not even notice the failure if no application wanted to access the file system during the failure?

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• How can I inject clips [ads] in a playlist every x minutes (even if previous clip is not over)

  - by azera

  Sorry for the title, I find it quite hard to describe what I want to do in a single sentence We have a few TV here linked to our computer, which we use to display clips about what we do in our sport center, what you should do to stay in good form ect ... It's running non stop, actually though vlc + playlist. Those main clips are 1-2 hours long and we have about 20 of them looping randomly all day. We would like to inject ads for some of our sponsiored products every now and then during the playlist, like say one ad every 15 minute. Does any one know how we can do that, while keeping the main clip random order ? I thought about encoding the whole thing as a single movie with ads inserted, but then it's not random. So we can put the ads in the playlist itself right ? Except clips are several hours long and we want that more often than that. Cutting the main clips in several pieces seems to work but that kind of sucks as new clips are made every month. If any one has an idea, thanks a lot

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• SBS 2008 - DNS Forwarders timing out.

  - by Moif Murphy

  Hello, We have an SBS 2008 server that keeps losing connection to the internet approx 2-3 times a day. It's a simple setup, BT Business Broadband ADSL to a Wireless Zyxel router to the server. Clients connect via WiFi from their laptops. Plugging ethernet in makes no difference, only a reboot of the router seems to bring everything back again. I'm looking at the forwarders on the DNS properties page and they're timing out when trying to resolve the IPs. Currently there are two IPs in there, 194.72.9.34 which has timed out and 194.72.9.38 which has finally resolved to ns8.bt.net We've been in there and replaced all media, installed a PCI NIC, have changed the router three times. There are no errors in the DNS event logs pertaining to what's going on. We've also been on to BT who are adamant that it's not their end. Could someone shed some light on what could be going on or where else to look in the configuration of the server? Thank you.

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• MysqlTunner and query_cache_size dilemma

  - by wbad

  On a busy mysql server MySQLTuner 1.2.0 always recommends to add query_cache_size no matter how I increase the value (I tried up to 512MB). On the other hand it warns that : Increasing the query_cache size over 128M may reduce performance Here are the last results: >> MySQLTuner 1.2.0 - Major Hayden <[email protected]> >> Bug reports, feature requests, and downloads at http://mysqltuner.com/ >> Run with '--help' for additional options and output filtering -------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.5.25-1~dotdeb.0-log [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: +Archive -BDB -Federated +InnoDB -ISAM -NDBCluster [--] Data in InnoDB tables: 6G (Tables: 195) [--] Data in PERFORMANCE_SCHEMA tables: 0B (Tables: 17) [!!] Total fragmented tables: 51 -------- Security Recommendations ------------------------------------------- [OK] All database users have passwords assigned -------- Performance Metrics ------------------------------------------------- [--] Up for: 1d 19h 17m 8s (254M q [1K qps], 5M conn, TX: 139B, RX: 32B) [--] Reads / Writes: 89% / 11% [--] Total buffers: 24.2G global + 92.2M per thread (1200 max threads) [!!] Maximum possible memory usage: 132.2G (139% of installed RAM) [OK] Slow queries: 0% (2K/254M) [OK] Highest usage of available connections: 32% (391/1200) [OK] Key buffer size / total MyISAM indexes: 128.0M/92.0K [OK] Key buffer hit rate: 100.0% (8B cached / 0 reads) [OK] Query cache efficiency: 79.9% (181M cached / 226M selects) [!!] Query cache prunes per day: 1033203 [OK] Sorts requiring temporary tables: 0% (341 temp sorts / 4M sorts) [OK] Temporary tables created on disk: 14% (760K on disk / 5M total) [OK] Thread cache hit rate: 99% (676 created / 5M connections) [OK] Table cache hit rate: 22% (1K open / 8K opened) [OK] Open file limit used: 0% (49/13K) [OK] Table locks acquired immediately: 99% (64M immediate / 64M locks) [OK] InnoDB data size / buffer pool: 6.1G/19.5G -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance Reduce your overall MySQL memory footprint for system stability Increasing the query_cache size over 128M may reduce performance Variables to adjust: *** MySQL's maximum memory usage is dangerously high *** *** Add RAM before increasing MySQL buffer variables *** query_cache_size (> 192M) [see warning above] The server has 76GB ram and dual E5-2650. The load is usually below 2. I appreciate your hints to interpret the recommendation and optimize the database configs.

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• Low-traffic WordPress website on Apache keeps crashing server

  - by OC2PS

  I have recently moved my low-moderate traffic (1000 UAUs, 5000 pageviews on a busy day) website from shared hosting to a Centos 6 64-bit VPS with Apache and cPanel running on 4 quad-core processor (likely oversold) and 3GB memory (Xen). We've had problems from the beginning. The server keeps crashing. It seems PHP keeps expanding till it consumes all the memory and crashes the server. Some folks have suggested that I should abandon Apache/cPanel/PHP/mySQL and go with nginX/Varnish/PHP-FPM/SQLite. But that's just not possible for me as I am not very tech savvy and need a simple GUI like cPanel to be able to manage the mundane management tasks (can't afford to hire system administrator or get fully managed hosting). I have come across several posts discussing optimization of Apache for WordPress. But all of these lead to articles that are pretty dated such as this ~4 year old one from Jan 2009 - http://thethemefoundry.com/blog/optimize-apache-wordpress/ The article is pretty detailed and seems helpful, but I stumble even on the first step. My httpd.conf only has 2 loadmodule commands LoadModule fastinclude_module modules/mod_fastinclude.so LoadModule bwlimited_module modules/mod_bwlimited.so So I go total bust right there. Further, my httpd.conf says Direct modifications to the Apache configuration file may be lost upon subsequent regeneration of the configuration file. To have modifications retained, all modifications must be checked into the configuration system by running: /usr/local/cpanel/bin/apache_conf_distiller I am having trouble finding where to change the modules in WHM. Please can someone help me with updated guidelines on how to optimize Apache for WordPress? Many thanks! P.S. The WordPress installation also has WP Super Cache installed. P.P.S. I also have phpBB, OpenCart, and Menalto Gallery installed.

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• Windows module installer delaying login, server 2008 R2

  - by Kyle

  We updated our servers this weekend (windows updates), everything went fine except one of our terminal servers now hangs at login with the message, "waiting for windows modules installer." It eventually times out and leaves an event log message that the service has stopped unexpectedly. I have disabled the service and users can now login in a reasonable time frame. However we will need to re-enable the service in order to install further updates. I'm not sure where to start with this one, I'm an entry level admin and my colleagues are on vacation today, thank God this isn't a serious problem. Further details: -It affects all users. -The only third party software on the server is our ERP software and screwdrivers from Tricerat. -The only event log message is that the service has stopped unexpectedly. -The server manager screen does not display any information about roles it just says, "error". -The remote desktop roles all seem to be functioning properly, Remote app works as well as standard RDP. Let me know if there is any further details I can provide, I will be checking this frequently throughout the day.

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• BackupExec 12 + RALUS - VERY slow backups

  - by LVDave

  We use Backup Exec 12 and the Remote Agent for Linux/Unix Servers (RALUS) to backup a large RHEL5 system. For various reasons we need to do a daily working set job. These working-set jobs run abysmally slow. The link between the target machine and the BE server is gigabit, and any other type of job runs 1-3GB/min. These working-set jobs start out at perhaps 40MB/min and over the course of the backup job slowly drops down so low that the BE job rate display in the "current jobs" goes blank.. Since we usually are only doing changed-files for one day, the job is usually small and finishes overnight and we don't worry abotu the slowness, but we had some issues with the backup server, and missed about 6 days of fairly heavy work on the Linux box, so this working-set job will be a doozy.. We have support with Symantec, and I've pestered them a lot about this, they've had me run RALUS in debug mode, sent them that log and a VXgather from the BE host and they had no fix/workaround.. To give an idea, I have the mentioned working-set job running for the last 3 1/2 hours and it's backed up just under 10MEGAbytes.... I'm posting this here to see if anybody in the "real world" has seen this/and/or has any ideas what might be causing these abysmally slow jobs, since Symantec seems to be clueless...

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• Rails application keeps timing out when attempting to connect to Postgresql DB

  - by Corillian

  I'm hosting a postgresql database on a small windows azure Ubuntu 13.04 VM with a default postgresql.conf. I have a Rails application running on a medium windows azure Ubuntu 13.04 VM. When accessing the postgresql database the rails application is constantly timing out. In its database.yml I have the connection pool size set to 120 and the timeout set to 15 seconds. Despite this my rails logs are full of the following error message: ActiveRecord::ConnectionTimeoutError: could not obtain a database connection within 5 seconds (waited 5.0023203 seconds). The max pool size is currently 120; consider increasing it. My postgresql.conf has a max connection limit of 120, making it any larger prevents the server from being able to successfully restart. I've also made sure that ssl was off in the postgresql.conf per this article but beyond that I have no idea what's going on. My postgresql logs don't contain any info indicating something is going wrong. My website is getting ~1k hits per day so perhaps a small VM instance just isn't powerful enough? I appreciate any assistance! [Edit1] The postgresql database is in a separate cloud service within the same affinity group. For example: db small VM: mydatabase.cloudapp.net (Affinity Group US East) forums medium VM: myforums.cloudapp.net (Affinity Group US East) On the database server I have opened port 5432. The connection to the database server from the forums server is using its hostname. Is it possible that the DNS resolution is what's taking so long?

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• Cannot get at data in my NAS

  - by Ben

  I've got a bit of an issue that I'm hoping you can help me with. I have an Iomega ix4 as my NAS. This runs Linux and each drive in the box has 2 partitions: one for the OS and RAID info, and the second for the actual data. I had it configured as RAID5. Recently one of the drives failed. At this point all of the data was available, it was just reporting a failed drive. I had a drive of the same capacity (although not the exact same spec) which I swapped in place of the failed drive. It recognised it, and started to rebuild the data protection. So far so good ... or so I thought. The next day, after data protection had finished reconstructing, the NAS was telling me that 4 new drives had been added, and wanted confirmation to overwrite the data. Obviously I declined to do this. I swapped the failed drive back in again, in the hope that it would return to its previous state of the data being accessible, but one failed disk. However it didn't - it still tells me that the NAS has 4 new drives in it. I am hopeful that the actual data is untouched, so what I need to do is get it to rebuild the RAID without touching the data on the disks. I have ssh access, and have run stuff like mdadm --examine to see what I can find. The mdadm.conf file has no entry in the "definitions of existing MD arrays" section. I have not run any actual rebuilding commands as yet, because this is entering an area which I am out of my depth in. Please can someone advise the best way of getting my data? Thanks.

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