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• Configuring TV Tuner Card in Ubuntu 9.10

  - by Ortus Mallum

  Hi, I have a TechCom SSD-TV-675 TV Tuner card which is working fine in Windows XP and Windows 7. I recently installed Ubuntu 9.10 in my system, it doesn't showing any tv tuner card in it. How can i configure and setup the tv tuner in Ubuntu 9.10.

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• 401 - Unauthorized: Access is denied error from web app running in IIS 7.5 using App Pool Identity

  - by Eric Gatesman

  I have an ASP.NET app on a Windows 2008 server, IIS 7.5. When I try to access web site, I get a login popup. If I click "cancel" I get a 401 - Unauthorized: Access is denied due to invalid credentials. The app is using Windows authentication (anonymous is disabled). The app has it's own app pool, running under the App Pool Identity. If I change the app pool to run under the NetworkService account, my website functions just fine. I'm guessing that this is just a permissions issue, but can't figure out what permissions I need to change. I gave the App Pool Identity permissions on the physical directory of the app, but that didn't solve the problem.

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• High server load - [jbd2/md1-8] using 99.99% IO

  - by Alex

  I've been having spike in load over the last week. This usually occurs once or twice a day. I've managed to identify from iotop that [jbd2/md1-8] is using 99.99 % IO. During the high load times there is no high traffic to the server. Server specs are: AMD Opteron 8 core 16 GB RAM 2x2.000 GB 7.200 RPM HDD Software Raid 1 Cloudlinux + Cpanel Mysql is properly tuned Apart from the spikes, the load usually is around 0.80 at most. I've searched around but can't find what [jbd2/md1-8] does exactly. Has anyone had this problem or does anyone know a possible solution? Thank you. UPDATE: TIME TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 16:05:36 399 be/3 root 0.00 B/s 38.76 K/s 0.00 % 99.99 % [jbd2/md1-8]

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• no disk io but iowait very high

  - by Dan

  there is no disk io going results of iotop Total DISK READ: 0.00 B/s | Total DISK WRITE: 0.00 B/s TID PRIO USER DISK READ DISK WRITE SWAPIN IO< COMMAND 1 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % init [3] 1930 be/4 named 0.00 B/s 0.00 B/s 0.00 % 0.00 % named -u ~d/run-root 1931 be/4 named 0.00 B/s 0.00 B/s 0.00 % 0.00 % named -u ~d/run-root 1932 be/4 named 0.00 B/s 0.00 B/s 0.00 % 0.00 % named -u ~d/run-root 1933 be/4 named 0.00 B/s 0.00 B/s 0.00 % 0.00 % named -u ~d/run-root 1810 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % sh /usr/b~user=mysql 9795 be/4 apache 0.00 B/s 0.00 B/s 0.00 % 0.00 % httpd 8004 be/4 apache 0.00 B/s 0.00 B/s 0.00 % 0.00 % httpd 3226 be/4 postfix 0.00 B/s 0.00 B/s 0.00 % 0.00 % tlsmgr -l -t unix -u 8154 be/4 apache 0.00 B/s 0.00 B/s 0.00 % 0.00 % httpd 9759 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % find -name php.ini 9249 be/4 apache 0.00 B/s 0.00 B/s 0.00 % 0.00 % httpd 1756 be/4 postfix 0.00 B/s 0.00 B/s 0.00 % 0.00 % psa-pc-re~@localhost 1863 be/4 mysql 0.00 B/s 0.00 B/s 0.00 % 0.00 % mysqld --~mysql.sock 3123 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % crond 1758 be/4 postfix 0.00 B/s 0.00 B/s 0.00 % 0.00 % psa-pc-re~@localhost 1865 be/4 mysql 0.00 B/s 0.00 B/s 0.00 % 0.00 % mysqld --~mysql.sock 1592 be/4 sw-cp-se 0.00 B/s 0.00 B/s 0.00 % 0.00 % sw-cp-ser~ver/config 7612 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % sshd: root@pts/0 7614 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % sftp-server 7615 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % -bash 1602 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % sshd 8003 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % httpd but iowait very high ? iostat report avg-cpu: %user %nice %system %iowait %steal %idle 0.83 0.00 0.13 13.83 0.00 85.20 Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn server runs like a snail what could be wrong here ? thanks

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• I get a "could not create lock file" error when trying to run Postgres

  - by zermy

  I recently had to replace my postgresql.conf file, and I thought I got the settings right, but when I try to run Postgresql, I get this error: ESTFATAL: could not create lock file "/var/run/postgresql/.s.PGSQL.5432.lock": No such file or directory My workaround is to go as root and create a folder called postgresql in /var/run and then change the owner of the folder to postgres. The biggest problem is that I need to do this every single time my computer starts, the folder somehow deletes itself. I tried commenting out the external pid file bit in the conf file, but that didn't change anything.

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• ScreenOS MIP selection for outbound connections

  - by David Mackintosh

  Given a ScreenOS 6.3.0 firewall with this configuration: unset flow reverse-route clear-text set interface "ethernet0/0" zone "Trust" set interface ethernet0/0 ip 192.168.1.1/24 set interface ethernet0/2 ip 10.0.0.1/24 set interface ethernet0/2 mip 10.9.9.10 host 192.168.1.10 netmask 255.255.255.255 vr trust-vr set interface ethernet0/2 mip 10.8.8.10 host 192.168.1.10 netmask 255.255.255.255 vr trust-vr set route 0.0.0.0/0 interface ethernet0/2 gateway 10.0.0.254 ... (and assuming appropriate policies) is there a way to control which MIP the firewall selects for outbound connections initiated by 192.168.1.10? (presumably because I want the upstream 10.0.0.254 to do different things with the packet depending on what its source IP is). Update: OK, my scenario is this: I have two ISP uplinks, each giving me a different IP space. Each ISP will only route the IP space they have assigned me. So in order for the server to be reachable by both ISPs, I need two MIPs for the same server, one on each interface. Inbound traffic will work fine with the 'unset flow reverse-route clear-text' option in use. But for outbound (think an email server sending a message) I need a way to select an appropriate MIP depending on which outbound link I want the system to use, and I want this to be resiliant so that if the link the firewall prefers goes down overnight I don't have to manually flip something to keep the mail flowing. Basically I'm trying to avoid having to buy a link-balancer appliance (or two since I'll need a cluster). Is there a way to do this?

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• Memcached - doesn't seem to be working

  - by Trev

  my local.xml <session_save><![CDATA[files]]></session_save> <cache> <backend>memcached</backend> <prefix>MAGE_</prefix> <memcached> <servers> <server> <host><![CDATA[127.0.0.1]]></host> <port><![CDATA[11211]]></port> <persistent><![CDATA[1]]></persistent> </server> </servers> </memcached> </cache> /var/cache is still filling up memachced is running memcache 2685 0.0 0.3 351888 26152 ? Sl 08:07 0:19 /usr/bin/memcached -m 64 -p 11211 -u memcache -l 127.0.0.1 How do i know its working? I notice no speed increases.

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• Failed to start apache Can't open /etc/apache2/envvars

  - by bumperbox

  i have had this problem a couple of times now and i am not sure what is causing it Failed to start apache : .: 45: Can't open /etc/apache2/envvars when i look at a dir listing, i get these question marks next to envvars, does anyone know what that means? os is ubuntu 10 if that helps drwxr-xr-x 7 root root 4096 Jan 29 11:56 . drwxr-xr-x 83 root root 4096 Feb 4 10:34 .. -rw-r--r-- 1 root root 8113 Sep 29 01:52 apache2.conf -rw-r--r-- 1 root root 8027 Oct 3 22:26 apache2.conf.dpkg-old drwxr-xr-x 2 root root 4096 Jan 29 11:56 conf.d ?????????? ? ? ? ? ? envvars -rw-r--r-- 1 root root 0 Oct 3 22:25 httpd.conf ?????????? ? ? ? ? ? magic drwxr-xr-x 2 root root 4096 Jan 29 11:56 mods-available drwxr-xr-x 2 root root 4096 Jan 29 10:18 mods-enabled ?????????? ? ? ? ? ? ports.conf drwxr-xr-x 2 root root 4096 Jan 29 11:56 sites-available drwxr-xr-x 2 root root 4096 Jan 29 11:55 sites-enabled UPDATE Just heard back from the hosting company, they move my VPS to a new hardware node last night, and something at their end wasn't quite right which caused the issue

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• Redirect 404 errors without rewriting the URL

  - by Knocks X

  Is it possible to have an erroneous URL remain in the address bar while redirecting the user to a URL within my domain? I want www.domain.com/forum to be the actual site being served in all 404 circumstances but I don't want the referring URL to be rewritten (other than the domain portion, which is being done on the registrar level). This is my current .htaccess RewriteEngine On RedirectMatch permanent ^/$ http://www.domain.com/forum/ RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule .* http://www.domain.com/forum/ [L,R]

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• Hosting custom domains with IP address flexibility

  - by F21

  I am building a small service where users will be assigned a subdomain such as: myusername.myservice.com anotheruser.myservice.com I know that I can set up a wildcard vhost and using some configuration regex, serve the files like so: myusername.myservice.com ===> /var/www/myusername anotherusername.myservice.com ===> /var/www/anotherusername The problem is that I would like to allow users to alias their own domain names to their service. I understand that for the webserver, once the user adds the domain via my web interface, I can easily create a vhost for the domain in nginx and then refresh the webserver. The problem is that I would prefer to NOT let the users add an A record of my webserver's IP address as I would prefer to keep things flexible (when we upgrade our infrastructure to something more complex to scale). What is the best way to achieve this?

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• Can the Intel C600-series SAS controller RAID SATA drives?

  - by CyberShadow

  (Sorry if this is off-topic - technically this is a home workstation setting, but is regarding mostly-server technology.) I have a GA-X79S-UP5-WIFI motherboard and four ST3000DM001 drives, and the IRST manager isn't letting me put the drives in a RAID (it lists them, but the option to select the C600-series controller is simply grayed out). Have I done a mistake? Do I need SAS drives to RAID them on the SAS controller?

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• Unable to get anything except 403 from a .Net 4.5 website

  - by Basic

  Scenario: Clean Server 2008 R2 Install with IIS Role. Installed Framework 3.5 (Server Features) Installed Framework 4.5 RC (MS Download) executed C:\Windows\Microsoft.NET\Framework64\v4.0.30319>aspnet_regiis.exe -i (I'd use -iru on existing servers but this is a clean build). Published via File System (SMB share) Converted the folder into an application using the .Net 4.0 Integrated App Pool Stopped/restarted everything. Browsing to localhost/TestApp results in a 403.14 (Directory browsing forbidden) What step have I missed out? The site in question is MVC4 and targets the 4.5 RC framework

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• Using NDMP as an alternative to CIFS mount

  - by user138922

  I have a weird but interesting use-case. I use CIFS to mount shares from a File Server (NetApp, EMC etc) to an application server (win/linux server where my application runs). My application needs to process each of the file from the shares that I mount via CIFS. My application also needs access to the meta-data of these files such as Name, Size, ACLs etc. I would like to see if I can achieve the same via NDMP. I have some very basic questions regarding this use-case. It would be great if you guys can help me out here. Is this even something which is achievable? Can I just transfer share that interest me instead of entire volume?

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• sccm 2007 SP2 SUP settings

  - by JohnyV

  When I try to add a SUP by adding a new site system. I try to select products but there are only older products in there. For example there isnt any office 2007 just 2003 and the only os are XP and windows vista. Any ideas how I can fix this?

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• Monitoring outgoing bandwidth of application

  - by jnolte

  I currently have a VPS that is consuming a ton of outgoing bandwidth and I am trying to drill down to where this may be coming from. Does anyone know of a logical way to go about finding out which pages on the site are consuming the most outgoing data. We have done a ton of front-end optimizations to the site and our google page speed rankings ar 85% so I feel we have done a pretty great job at optimizing the site for speed. Can someone lend some insight on how they have made similar optimizations? Application / Server Stack LEMP Running Varnish Cache / PHP5-FPM WordPress running w3 Total Cache Ubuntu 12.04 LTS

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• Where to set catch-all address in Postfix (virtual mailboxes in affect)

  - by Cem

  I successfully configured Postfix to deliver messages to virtual mailboxes. I can set aliases and pipes inside /etc/postfix/virtual and mailboxes inside /etc/postfix/virtual_mailbox files. However, whenever I set a catch-all domain and point to a remote email address, it overrides all other virtual mailboxes and virtual aliases set in postfix. How can I set a catch-all forwarding to the remote email address when virtual mailbox is enabled? I set catch-all like this: @mydomain.com [email protected] Thanks for your help!

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• Memcached Lagging

  - by Brad Dwyer

  Let me preface this by saying that this is a followup question to this topic. That was "solved" by switching from Solaris (SmartOS) to Ubuntu for the memcached server. Now we've multiplied load by about 5x and are running into problems again. We are running a site that is doing about 1000 requests/minute, each request hits Memcached with approximately 3 reads and 1 write. So load is approximately 65 requests per second. Total data in the cache is about 37M, and each key contains a very small amount of data (a JSON-encoded array of integers amounting to less than 1K). We have setup a benchmarking script on these pages and fed the data into StatsD for logging. The problem is that there are spikes where Memcached takes a very long time to respond. These do not appear to correlate with spikes in traffic. What could be causing these spikes? Why would memcached take over a second to reply? We just booted up a second server to put in the pool and it didn't make any noticeable difference in the frequency or severity of the spikes. This is the output of getStats() on the servers: Array ( [-----------] => Array ( [pid] => 1364 [uptime] => 3715684 [threads] => 4 [time] => 1336596719 [pointer_size] => 64 [rusage_user_seconds] => 7924 [rusage_user_microseconds] => 170000 [rusage_system_seconds] => 187214 [rusage_system_microseconds] => 190000 [curr_items] => 12578 [total_items] => 53516300 [limit_maxbytes] => 943718400 [curr_connections] => 14 [total_connections] => 72550117 [connection_structures] => 165 [bytes] => 2616068 [cmd_get] => 450388258 [cmd_set] => 53493365 [get_hits] => 450388258 [get_misses] => 2244297 [evictions] => 0 [bytes_read] => 2138744916 [bytes_written] => 745275216 [version] => 1.4.2 ) [-----------:11211] => Array ( [pid] => 8099 [uptime] => 4687 [threads] => 4 [time] => 1336596719 [pointer_size] => 64 [rusage_user_seconds] => 7 [rusage_user_microseconds] => 170000 [rusage_system_seconds] => 290 [rusage_system_microseconds] => 990000 [curr_items] => 2384 [total_items] => 225964 [limit_maxbytes] => 943718400 [curr_connections] => 7 [total_connections] => 588097 [connection_structures] => 91 [bytes] => 562641 [cmd_get] => 1012562 [cmd_set] => 225778 [get_hits] => 1012562 [get_misses] => 125161 [evictions] => 0 [bytes_read] => 91270698 [bytes_written] => 350071516 [version] => 1.4.2 ) ) Edit: Here is the result of a set and retrieve of 10,000 values. Normal: Stored 10000 values in 5.6118 seconds. Average: 0.0006 High: 0.1958 Low: 0.0003 Fetched 10000 values in 5.1215 seconds. Average: 0.0005 High: 0.0141 Low: 0.0003 When Spiking: Stored 10000 values in 16.5074 seconds. Average: 0.0017 High: 0.9288 Low: 0.0003 Fetched 10000 values in 19.8771 seconds. Average: 0.0020 High: 0.9478 Low: 0.0003

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• Puppet won't execute command

  - by tom

  Puppet 0.25.4 on ubuntu point blank refuses to execute the following command: exec {"initiate replica set": command => "echo 'rs.initiate()' | mongo", path => ["/usr/bin","/usr/sbin","/bin"], user => "root", require => Class["mongodb"] } I can execute the command as root myself, so I'm guessing perhaps it's an issue with the shell. Unfortunately upgrading puppet isn't an option (and causes other issues anyway). I've tried specifying explicit paths to the binaries instead of relying on the path parameter, and also changing the command to: "bash -c \"echo 'rs.initiate()' | mongo\"" Still doesn't work. Any ideas? I get an error message saying something like "failed to change from notrun to 0"

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• esxi VM will not connect to virual switch

  - by NitroxDM

  I have a exsi box with a VM (Windows 2003) that will not connect to any of the switches. The switch shows the VM connected but I can not ping anything on the network. I have double checked the VM's IP. No dice. There are a ton of messages in the log: [DATE 'VmMisc' NNNNN warning] Failed to validate VM IP address: unknown Update: There are 3 other VMs. Each vSwitch has 56 ports. I can ping from one nic to the other. Each vSwitch shows that the new VM is connect. VMware ESX Server 3i V 3.5.9 Build 123629 Update 2: Out of the blue it just started working. I didn't change anything. I think it has something to do with RRAS.

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• Linux/Unix MTA with the smartest queue?

  - by threecheeseopera

  I am looking for an MTA that will allow me (a script, really) to proactively manage it's send queue in response to status codes returned by the remote servers I am delivering to. Basically, for each mail sent I would like to be able to react to the SMTP reply code returned by the remote server, ex. '250 OK', or to any error conditions like connection timeouts. Additionally, I would like to be able to manage the send queue moving forward based on this information, e.g. 'example.com has timed out the last 5 connection attempts, so no longer queue mail for recipients @example.com'. I am currently using postfix and perl to parse it's logs for this information, but I am playing a game of catchup that is prone to errors (out-of-order log entries etc.) and it's starting to get messy (some real ugly regexes ;). I really don't want to reinvent the wheel and use some language's smtp library; i would prefer to use a proven/fast/reliable MTA. I am however open to suggestions if what I need just isn't possible. Thanks for your help!

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• Postfix - How to alias some [email protected] to another user, but only for certain values of "host.com"

  - by Rory McCann

  I have a Postfix email setup. It's handle a few domains (i.e. I have them in my mynetworks in my main.cf). I have a normal unix account and use that to log in, and get my mail. My personal email account is of the form [email protected]. I have a new domain new.com, and I want to forward [email protected] to [email protected], however I don't want to forward [email protected]. Someone has suggested just forwarding all 'info' to 'user', and then using procmail on my user@ account to remove the [email protected] The server is Ubuntu.

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• Useful extensions for MediaWiki

  - by Stan

  Can anyone suggestion some useful MediaWiki extension? I've installed PDF export, syntax lighlight, file link protocol, submit in toolbar, enforce strong password. But still eager to know any good/handy extensions. Thanks

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• Optimizing MySQL for small VPS

  - by Chris M

  I'm trying to optimize my MySQL config for a verrry small VPS. The VPS is also running NGINX/PHP-FPM and Magento; all with a limit of 250MB of RAM. This is an output of MySQL Tuner... -------- General Statistics -------------------------------------------------- [--] Skipped version check for MySQLTuner script [OK] Currently running supported MySQL version 5.1.41-3ubuntu12.8 [OK] Operating on 64-bit architecture -------- Storage Engine Statistics ------------------------------------------- [--] Status: -Archive -BDB -Federated +InnoDB -ISAM -NDBCluster [--] Data in MyISAM tables: 1M (Tables: 14) [--] Data in InnoDB tables: 29M (Tables: 301) [--] Data in MEMORY tables: 1M (Tables: 17) [!!] Total fragmented tables: 301 -------- Security Recommendations ------------------------------------------- [OK] All database users have passwords assigned -------- Performance Metrics ------------------------------------------------- [--] Up for: 2d 11h 14m 58s (1M q [8.038 qps], 33K conn, TX: 2B, RX: 618M) [--] Reads / Writes: 83% / 17% [--] Total buffers: 122.0M global + 8.6M per thread (100 max threads) [!!] Maximum possible memory usage: 978.2M (404% of installed RAM) [OK] Slow queries: 0% (37/1M) [OK] Highest usage of available connections: 6% (6/100) [OK] Key buffer size / total MyISAM indexes: 32.0M/282.0K [OK] Key buffer hit rate: 99.7% (358K cached / 1K reads) [OK] Query cache efficiency: 83.4% (1M cached / 1M selects) [!!] Query cache prunes per day: 48301 [OK] Sorts requiring temporary tables: 0% (0 temp sorts / 144K sorts) [OK] Temporary tables created on disk: 13% (27K on disk / 203K total) [OK] Thread cache hit rate: 99% (6 created / 33K connections) [!!] Table cache hit rate: 0% (32 open / 51K opened) [OK] Open file limit used: 1% (20/1K) [OK] Table locks acquired immediately: 99% (1M immediate / 1M locks) [!!] InnoDB data size / buffer pool: 29.2M/8.0M -------- Recommendations ----------------------------------------------------- General recommendations: Run OPTIMIZE TABLE to defragment tables for better performance Reduce your overall MySQL memory footprint for system stability Enable the slow query log to troubleshoot bad queries Increase table_cache gradually to avoid file descriptor limits Variables to adjust: *** MySQL's maximum memory usage is dangerously high *** *** Add RAM before increasing MySQL buffer variables *** query_cache_size (> 64M) table_cache (> 32) innodb_buffer_pool_size (>= 29M) and this is the config. # # The MySQL database server configuration file. # # You can copy this to one of: # - "/etc/mysql/my.cnf" to set global options, # - "~/.my.cnf" to set user-specific options. # # One can use all long options that the program supports. # Run program with --help to get a list of available options and with # --print-defaults to see which it would actually understand and use. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html # This will be passed to all mysql clients # It has been reported that passwords should be enclosed with ticks/quotes # escpecially if they contain "#" chars... # Remember to edit /etc/mysql/debian.cnf when changing the socket location. [client] port = 3306 socket = /var/run/mysqld/mysqld.sock # Here is entries for some specific programs # The following values assume you have at least 32M ram # This was formally known as [safe_mysqld]. Both versions are currently parsed. [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] # # * Basic Settings # # # * IMPORTANT # If you make changes to these settings and your system uses apparmor, you may # also need to also adjust /etc/apparmor.d/usr.sbin.mysqld. # user = mysql socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp skip-external-locking # # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = 127.0.0.1 # # * Fine Tuning # key_buffer = 32M max_allowed_packet = 16M thread_stack = 192K thread_cache_size = 8 sort_buffer_size = 4M read_buffer_size = 4M myisam_sort_buffer_size = 16M # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched myisam-recover = BACKUP max_connections = 100 table_cache = 32 tmp_table_size = 128M #thread_concurrency = 10 # # * Query Cache Configuration # #query_cache_limit = 1M query_cache_type = 1 query_cache_size = 64M # # * Logging and Replication # # Both location gets rotated by the cronjob. # Be aware that this log type is a performance killer. # As of 5.1 you can enable the log at runtime! #general_log_file = /var/log/mysql/mysql.log #general_log = 1 log_error = /var/log/mysql/error.log # Here you can see queries with especially long duration #log_slow_queries = /var/log/mysql/mysql-slow.log #long_query_time = 2 #log-queries-not-using-indexes # # The following can be used as easy to replay backup logs or for replication. # note: if you are setting up a replication slave, see README.Debian about # other settings you may need to change. #server-id = 1 #log_bin = /var/log/mysql/mysql-bin.log expire_logs_days = 10 max_binlog_size = 100M #binlog_do_db = include_database_name #binlog_ignore_db = include_database_name # # * InnoDB # # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/. # Read the manual for more InnoDB related options. There are many! # # * Security Features # # Read the manual, too, if you want chroot! # chroot = /var/lib/mysql/ # # For generating SSL certificates I recommend the OpenSSL GUI "tinyca". # # ssl-ca=/etc/mysql/cacert.pem # ssl-cert=/etc/mysql/server-cert.pem # ssl-key=/etc/mysql/server-key.pem [mysqldump] quick quote-names max_allowed_packet = 16M [mysql] #no-auto-rehash # faster start of mysql but no tab completition [isamchk] key_buffer = 16M # # * IMPORTANT: Additional settings that can override those from this file! # The files must end with '.cnf', otherwise they'll be ignored. # !includedir /etc/mysql/conf.d/ The site contains 1 wordpress site,so lots of MYISAM but mostly static content as its not changing all that often (A wordpress cache plugin deals with this). And the Magento Site which consists of a lot of InnoDB tables, some MyISAM and some INMEMORY. The "read" side seems to be running pretty well with a mass of optimizations I've used on Magento, the NGINX setup and PHP-FPM + XCACHE. I'd love to have a kick in the right direction with the MySQL config so I'm not blindly altering it based on the MySQLTuner without understanding what I'm changing. Thanks

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• How to troubleshoot connectivity when curl gets an *empty response*

  - by chad

  I want to know how to proceed in troubleshooting why a curl request to a webserver doesn't work. I'm not looking for help that would be dependent upon my environment, I just want to know how to collect information about exactly what part of the communication is failing, port numbers, etc. chad-integration:~ # curl -v 111.222.159.30 * About to connect() to 111.222.159.30 port 80 (#0) * Trying 111.222.159.30... connected * Connected to 111.222.159.30 (111.222.159.30) port 80 (#0) > GET / HTTP/1.1 > User-Agent: curl/7.19.0 (x86_64-suse-linux-gnu) libcurl/7.19.0 OpenSSL/0.9.8h zlib/1.2.3 libidn/1.10 > Host: 111.222.159.30 > Accept: */* > * Empty reply from server * Connection #0 to host 111.222.159.30 left intact curl: (52) Empty reply from server * Closing connection #0 So, I understand that an empty response means that curl didn't get any response from the server. No problem, that's precisely what I'm trying to figure out. But what more specific info can I derive from cURL here? It was able to successfully "connect", so doesn't that involve some bidirectional communication? If so, then why does the response not come also? Note, I've verified my service is up and returning responses. Note, I'm a bit green at this level of networking, so feel free to provide some general orientation material.

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• NTBackup Error: C: is not a valid drive

  - by Chris

  I'm trying to use NtBackup to back up the C: Drive on a Microsoft Windows Small Business Server 2003 machine and get the following error in the log file: Backup Status Operation: Backup Active backup destination: 4mm DDS Media name: "Media created 04/02/2011 at 21:56" Error: The device reported an error on a request to read data from media. Error reported: Invalid command. There may be a hardware or media problem. Please check the system event log for relevant failures. Error: C: is not a valid drive, or you do not have access. The operation did not successfully complete. I'm using a brand new SATA Quantum Dat-72 drive with a brand new tape (tried a couple of tapes). I carry out the following: Open NTBackup Select Backup Tab Tick the box next to C: Ensure Destination is 4mm DDS Media is set to New Press Start Backup Choose Replace the data on the media and press Start Backup NTBackup tries to mount the media Error Message shows: The device reported an error on a request to read data from media. Error reported: INvalid command. There may be a hardware or media problem. Please check the system event log for relevant failures. On checking the log I find the following: Event Type: Information Event Source: NTBackup Event Category: None Event ID: 8018 Date: 04/02/2011 Time: 22:02:02 User: N/A Computer: SERVER Description: Begin Operation For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. and then; Event Type: Information Event Source: NTBackup Event Category: None Event ID: 8019 Date: 04/02/2011 Time: 22:02:59 User: N/A Computer: SERVER Description: End Operation: The operation was successfully completed. Consult the backup report for more details. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

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