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• Ubuntu 12.04 compiz - disable all compiz plugin - empty screen

  - by gotqn

  A lots of thanks to terdon who spent so many time on this and finally solve the issue. A friend of mine has installed on my new machine Ubuntu 12.04 (I have always been windows user and have no experience with Linux). I started to watch some tutorial about how to make 'Rotated Cube' using 'Compiz',but the cube appears in the form of a list (only two slides). I have thought this could be result of my video cards (only two - one from the processor and one from the motherboard) and they can not support this options. Anyway, I have decided to disable all compiz plugins and options because my friend has set some, and I started to think there is some misunderstanding between the plugins. After, that I got only empty screen(no menu, no icons, anything) and can do nothing. How to fix this? EDIT: When I remove the compiz stuffs (from the console), the menu is shown again. Then I install the compiz again (some of the effect are still not working). After restart or log out/in the menu is hidden again. I suppose that there are some settings that I've broken but they are saved somewhere in the system and remove the compiz do not deleted them and as a result they are activated after compiz is installed again and the PC is restarted?

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• What is the difference between Startup programs in windows and the same programs being started manually

  - by sup

  I am no Windows guy, but I am trying to get a seamless integration of Windows program through Virtual Box Windows guest onto my Ubuntu machine. I more or less followed this tutorial: https://nowhere.dk/articles/running-windows-applications-natively-with-seamlessrdp Basically I start up Windows in Virtual Box and then I try to launch an application (on Ubuntu host) like this: rdesktop -A -s "c:\Program Files\ThinLinc\WTSTools\seamlessrdpshell.exe notepad.exe" 192.168.123.103:3389 -u user -p password That just gives me full Windows desktop that I do not want. However, when I run (on the Windows guest) "c:\Program Files\ThinLinc\WTSTools\seamlessrdpshell.exe" "notepad" The command above works and I get just the window I want. Now, so I thought I would put this command into startup folder of the Windows machine and everything would be fine. But it says "Unable to set up the virtual channel". (by googling, I nailed it to this file: https://sourceforge.net/p/rdesktop/code/1686/tree/seamlessrdp/trunk/ServerExe/vchannel.c - the warning is triggered (by main.c in the same directory) when function vchannel_open() returns something that C interprets as yes for if condition). I have no idea why it works when I launch this command manually via a bat file and not when I put it to startup programs. Any ideas?

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• dnssec zonesigner ignoring out-of-zone data

  - by jordi12100

  I am trying to configure DNSSec with BIND9 on CentOS 6.4 running DirectAdmin control panel. I am using this tutorial to make it work: https://www.dnssec-tools.org/wiki/index.php/Zonesigner But I can't get it work... When I run this command: zonesigner --genkeys jordikroon.nl.db jordikroon.nl.db.signed I get this error: jordikroon.nl.db:17: ignoring out-of-zone data (jordikroon.nl) jordikroon.nl.db:18: ignoring out-of-zone data (jordikroon.nl) jordikroon.nl.db:22: ignoring out-of-zone data (jordikroon.nl) jordikroon.nl.db:29: ignoring out-of-zone data (jordikroon.nl) jordikroon.nl.db:33: ignoring out-of-zone data (jordikroon.nl) zone jordikroon.nl.db/IN: has no NS records zone jordikroon.nl.db/IN: not loaded due to errors. I can't find anything on the web about this error. This is my zone db file: $TTL 14400 @ IN SOA ns1.ghservers.org. hostmaster.jordikroon.nl. ( 2013090703 14400 3600 1209600 86400 ) jordikroon.nl. 14400 IN NS ns1.ghservers.org. jordikroon.nl. 14400 IN NS ns2.ghservers.org. cp 14400 IN A 85.17.32.228 ftp 14400 IN A 85.17.32.228 jordikroon.nl. 14400 IN A 85.17.32.228 localhost 14400 IN A 127.0.0.1 mail 14400 IN A 85.17.32.228 pop 14400 IN A 85.17.32.228 smtp 14400 IN A 85.17.32.228 www 14400 IN A 85.17.32.228 jordikroon.nl. 14400 IN MX 10 mail jordikroon.nl. 14400 IN TXT "v=spf1 a mx ip4:85.17.32.228 ~all" localhost 14400 IN AAAA ::1 How do I have to fix this? All IN keywords are being ignored. Any help is welcome:-)

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• Unable to install mod_wsgi on CentOS 5.5 VPS...

  - by jasonaburton

  I am trying to install mod_wsgi on my VPS, but it won't work. This is what I am doing: wget http://modwsgi.googlecode.com/files/mod_wsgi-2.5.tar.gz tar xzvf mod_wsgi-2.5.tar.gz cd mod_wsgi-2.5 ./configure --with-python=/opt/python2.5/bin/python After I run the above command, I get this error: checking for apxs2... no checking for apxs... no checking Apache version... ./configure: line 1298: apxs: command not found ./configure: line 1298: apxs: command not found ./configure: line 1299: /: is a directory ./configure: line 1461: apxs: command not found configure: creating ./config.status config.status: creating Makefile config.status: error: cannot find input file: Makefile.in Through some research I've discovered that I need to modify my command: ./configure --with-apxs=/usr/local/apache/bin/apxs \ --with-python=/usr/local/bin/python But, /usr/local/apache/ doesn't exist, or so that's what it is telling me. If it doesn't exist, how do I create it with all the files needed, or if apache is located elsewhere on my VPS where would it be located? I'd also like to mention that I ran a command to install apache before this entire deal: yum install httpd so I assumed that was all I needed but apparently not (I am very new at all this server administration stuff so please be gentle) EDIT: This is the tutorial that I have been using to get this all set up: http://binarysushi.com/blog/2009/aug/19/CentOS-5-3-python-2-5-virtualevn-mod-wsgi-and-mod-rpaf/ I got stuck at the heading "Installing mod_wsgi" Thanks for any help!

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• OpenVPN connected but not internet access on the client

  - by Stefan

  I've setup OpenVPN following this tutorial, and everything works fine except that I don't have an internet connection on the client while connected to VPN. http://www.howtoforge.com/internet-and-lan-over-vpn-using-openvpn-linux-server-windows-linux-clients-works-for-gaming-and-through-firewalls My VPS server config is as follows (Ubuntu): dev tun proto udp port 1194 ca /etc/openvpn/easy-rsa/keys/ca.crt cert /etc/openvpn/easy-rsa/keys/server.crt key /etc/openvpn/easy-rsa/keys/server.key dh /etc/openvpn/easy-rsa/keys/dh1024.pem user nobody group nogroup server 10.8.0.0 255.255.255.0 persist-key persist-tun status /var/log/openvpn-status.log verb 3 client-to-client push "redirect-gateway local def1" #set the dns servers push "dhcp-option DNS 8.8.8.8" push "dhcp-option DNS 8.8.4.4" log-append /var/log/openvpn comp-lzo plugin /usr/lib/openvpn/openvpn-auth-pam.so common-auth My client config is as follows (Windows 7): dev tun client proto udp remote XXX.XXX.XXX.XXX 1194 resolv-retry infinite nobind persist-key persist-tun ca ca.crt cert stefan.crt key stefan.key comp-lzo verb 3 auth-user-pass redirect-gateway local def1 I've turned off the firewall on the server for testing purposes (it doesn't help), and tried both wired and wireless connecting on the client. I've tried many Google results... but nothing seems to help. Can you help me? Thanks so far...

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• Improving IO with FlashCache

  - by Devator

  I have a server with 2 HDD's (2x 1 TB), running in RAID 1 (SW-RAID). I want to improve IO performance by using flashcache. There are running KVM virtual machines on it, using LVM. Regarding this, I have the following questions: Will this even work? flashcache works for block devices, however these are all virtual machines with their own setup. How much would I expect to increase performance? Most virtual machines run websites and some host games. How big does the SSD needs to be? Would having a bigger SSD increase performance since it's able to cache more files? What happens if the SSD dies? Would flashcache retrieve files from the traditional HDD and I could simply replace the SSD? How much faster would writeback be in comparison with writethrough and writearound? I have no access to a test system unfortunately, so could I install flashcache on a live server without unmounting the the disks? I found a great tutorial here which I would be using.

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• location of index.html CentOS 6

  - by user2118559

  Based on this http://www.servermom.com/how-to-add-new-site-into-your-apache-based-centos-server/454/ tutorial installed Apache-based CentOS Server I use putty.exe as editor vi /etc/httpd/conf/httpd.conf at very bottom modified to <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /var/www/fikitipis.com/public_html ServerName www.fikitipis.com ServerAlias fikitipis.com ErrorLog /var/www/fikitipis.com/error.log CustomLog /var/www/fikitipis.com/requests.log common </VirtualHost> So expect that index is at /var/www/fikitipis.com/public_html When in browser type ip address of server, see Apache 2 Test Page powered by CentOS and so on You may now add content to the directory /var/www/html/ Then [root@vps ~]# ls /var/www/ see cgi-bin domain.com error fikitipis.com html icons Checking content of directories ls /var/www/domain.com/public_html, ls /var/www/fikitipis.com/public_html, /var/www/html/ are empty Where is index.html? Did touch /var/www/fikitipis.com/public_html/index1.html then vi /var/www/fikitipis.com/public_html/index1.html, typed a, then wrote some text in file, then Escape and shift+zz. And in browser http://111.111.11.111/index1.html and see what I had wrote. So until now seems that all works

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• VNC server failed to start CentOS

  - by Shaun

  I followed a tutorial on how to install and get VNCserver to run on CentOS 6 (since freenx isnt supported yet) and I keep getting Starting VNC server: 1:user [FAILED] How do I figure out whats going on here? Im new to Linux/CentOS and im trying to get RDP going so I can step away from SSH as much as possible (you know us Windows users love our pretty GUI's). So, where is the error log at and how do I find it? Or maybe someone else has experienced this and knows the solution based on the simple error given? After running in debug mode, here is my error + . /etc/init.d/functions ++ TEXTDOMAIN=initscripts ++ umask 022 ++ PATH=/sbin:/usr/sbin:/bin:/usr/bin ++ export PATH ++ '[' -z '' ']' ++ COLUMNS=80 ++ '[' -z '' ']' +++ /sbin/consoletype ++ CONSOLETYPE=pty ++ '[' -f /etc/sysconfig/i18n -a -z '' -a -z '' ']' ++ . /etc/profile.d/lang.sh ++ unset LANGSH_SOURCED ++ '[' -z '' ']' ++ '[' -f /etc/sysconfig/init ']' ++ . /etc/sysconfig/init +++ BOOTUP=color +++ RES_COL=60 +++ MOVE_TO_COL='echo -en \033[60G' +++ SETCOLOR_SUCCESS='echo -en \033[0;32m' +++ SETCOLOR_FAILURE='echo -en \033[0;31m' +++ SETCOLOR_WARNING='echo -en \033[0;33m' +++ SETCOLOR_NORMAL='echo -en \033[0;39m' +++ PROMPT=yes +++ AUTOSWAP=no +++ ACTIVE_CONSOLES='/dev/tty[1-6]' +++ SINGLE=/sbin/sushell ++ '[' pty = serial ']' ++ __sed_discard_ignored_files='/\(~\|\.bak\|\.orig\|\.rpmnew\|\.rpmorig\|\.rpmsave\)$/d' + '[' -r /etc/sysconfig/vncservers ']' + . /etc/sysconfig/vncservers ++ VNCSERVERS='1:larry 2:moe 3:curly' ++ VNCSERVERARGS[1]='-geometry 800x600' ++ VNCSERVERARGS[2]='-geometry 640x480' ++ VNCSERVERARGS[3]='-geometry 640x480' + prog='VNC server' + RETVAL=0 + case "$1" in + start + '[' 0 '!=' 0 ']' + . /etc/sysconfig/network ++ NETWORKING=yes ++ HOSTNAME=vps.binaryvisionaries.com ++ DOMAINNAME=server.name ++ GATEWAYDEV=venet0 ++ NETWORKING_IPV6=yes ++ IPV6_DEFAULTDEV=venet0 + '[' yes = no ']' + '[' -x /usr/bin/vncserver ']' + '[' -x /usr/bin/Xvnc ']' + echo -n 'Starting VNC server: ' Starting VNC server: + RETVAL=0 + '[' '!' -d /tmp/.X11-unix ']' + for display in '${VNCSERVERS}' + SERVS=1 + echo -n '1:larry ' 1:larry + DISP=1 + USER=larry + VNCUSERARGS='-geometry 800x600' + runuser -l larry -c 'cd ~larry && [ -r .vnc/passwd ] && vncserver :1 -geometry 800x600' + RETVAL=1 + '[' 1 -eq 0 ']' + break + '[' -z 1 ']' + '[' 1 -eq 0 ']' + failure 'vncserver start' + local rc=1 + '[' color '!=' verbose -a -z '' ']' + echo_failure + '[' color = color ']' + echo -en '\033[60G' + echo -n '[' [+ '[' color = color ']' + echo -en '\033[0;31m' + echo -n FAILED FAILED+ '[' color = color ']' + echo -en '\033[0;39m' + echo -n ']' ]+ echo -ne '\r' + return 1 + '[' -x /usr/bin/plymouth ']' + /usr/bin/plymouth --details + return 1 + echo + '[' 1 -eq 98 ']' + return 1 + exit 1

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• Postfix / Dovecot email setup not storing email

  - by Nick Duffell

  I'm trying to setup postfix / dovecot on my debian server to use it for a mail server. I set everything up according to a tutorial on the net, and it all seemed OK. I can send emails from it, so SMTP is not a problem, however I cannot receive emails. Looking into the files in /home/nick/mail/ I can see that if I send an email to myself (from the server, to itself) the emails are there, but are put straight into the Deleted Messages folder. I don't know why this is. When I send an email from another mail account (not on this server), the emails are nowhere to be found. Also, looking at the log file /var/log/mail.log all seems to be OK, I get the following when I receive an email, which looks OK to me: Nov 7 22:47:22 nickduffell postfix/local[17825]: 05B1173581A6: to=, relay=local, delay=0.37, delays=0.31/0.02/0/0.03, dsn=2.0.0, status=sent (delivered to mailbox) Any ideas? Thanks EDIT: I should also add that although the emails I send myself are in the Deleted Messages folder, and in my mail client I can see that "Trash" has 3 items, I cannot download them in my mail client...

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• Linux Tuning for High Traffic JBoss Server with LDAP Binds

  - by Levi Stanley

  I'm configuring a high traffic Linux server (RedHat) and running into a limit I haven't been able to track down. I need to be able to handle sustained 300 requests per second throughput using Nginx and JBoss. The point of this server is to run checks on a user's account when that user signs in. Each request goes through Nginx to JBoss (specifically Torquebox with JBoss A7 with a Sinatra app) and then makes an LDAP request to bind that user and retrieve several attributes. It is during the bind that these errors occur. I'm able to reproduce this going directly to JBoss, so that rules out Nginx at least. I get a variety of error messages, though oddly JBoss stopped writing to the log file recently. It used to report errors about creating native threads. Now I just see "java.net.SocketException: Connection reset" and "org.apache.http.conn.HttpHostConnectException: Connection to http://my.awesome.server:8080 refused" as responses in jmeter. To the best of my knowledge, I have plenty of available file handles, processes, sockets, and ports, yet the issue persists. Unfortunately, I have very little experience tuning servers. I've found a couple useful documents - Ipsysctl tutorial 1.0.4 and Linux Tuning - but those documents are a bit over my head (and just entering the the configuration described in Linux Tuning doesn't fix my issue. Here are the configuration changes I've tried (webproxy is the user that runs Nginx and JBoss): /etc/security/limits.conf webproxy soft nofile 65536 webproxy hard nofile 65536 webproxy soft nproc 65536 webproxy hard nproc 65536 root soft nofile 65536 root hard nofile 65536 root soft nproc 65536 root hard nofile 65536 First attempt /etc/sysctl.conf sysctl net.core.somaxconn = 8192 sysctl net.ipv4.ip_local_port_range = 32768 65535 sysctl net.ipv4.tcp_fin_timeout = 15 sysctl net.ipv4.tcp_keepalive_time = 1800 sysctl net.ipv4.tcp_keepalive_intvl = 35 sysctl net.ipv4.tcp_tw_recycle = 1 sysctl net.ipv4.tcp_tw_reuse = 1 Second attempt /etc/sysctl.conf net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.ipv4.tcp_rmem = 4096 87380 16777216 net.ipv4.tcp_wmem = 4096 65536 16777216 net.core.netdev_max_backlog = 30000 net.ipv4.tcp_congestion_control=htcp net.ipv4.tcp_mtu_probing=1 Any ideas what might be happening here? Or better yet, are there some good documentation resources designed for beginners?

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• permanent NAS-mount in Ubuntu - wrong fs type, bad option, bad superblock

  - by Emil

  My network drive shows up in the file browser, just like my external usb-harddrive. Moving, running and editing files works. Hovering over it shows smb://lacie-2big/nasdisk . BUT, when I want to save a file, the drive doesn't come up as an option. All I can see is my other places, including my usb-harddrive. I am a complete newbie but I am GUESSING that it has something to do with the mount not being a "real" mount but just a shortcut to the smb location. So I ran the tutorial at https://wiki.ubuntu.com/MountWindowsSharesPermanently about how to "mount a network drive permanently". edited my fstab to //LaCie-2big/nasdisk /media/nasmount cifs guest,uid=1000,iocharset=utf8,codepage=unicode,unicode 0 0 and running sudo mount -a gave me the following error: mount: wrong fs type, bad option, bad superblock on //LaCie-2big/nasdisk, missing codepage or helper program, or other error (for several filesystems (e.g. nfs, cifs) you might need a /sbin/mount. helper program) In some cases useful info is found in syslog - try dmesg | tail or so Now thats a very helpful error message, BUT, before I go any further, I'd be really thankful if one of you could tell me if I'm even in the right ballpark, or if my actual need: to be able to download files (ie torrents) directly to the drive, can be possible as it is already. Question: How to fix "wrong fs type, bad option, bad superblock on //LaCie-2big/nasdisk, missing codepage or helper program" when running mount -a

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• There's no sound on Ubuntu with an Intel HDA onboard chip and Realtek ALC1200 codec.

  - by Hanno Fietz

  For a while now, my sound has not been working in Ubuntu. It used to play OK, but after some upgrade (might have been distro upgrade to 9.10), it stopped working. I'm currently running 10.04 on an amd64 architecture. I'm using the builtin audio on a Foxconn motherboard, it's an ATI / Intel HDA chip with an Azalia controller, apparently it's using the Realtek ALC1200 codec. All the gory details here. I found a nice sound troubleshooting tutorial here, which is well-written and pretty extensive, however, I fail to look up the supported "models" for my soundcard. The troubleshooting page says to look for a section giving the codec used by your soundcard, which looks like this for me: !!HDA-Intel Codec information !!--------------------------- --startcollapse-- Codec: Realtek ALC1200 Then, I'm supposed to lookup the models for that codec in the file Documentation/ALSA-Configuration.txt in the appropriate directory of ALSA's git repository. Mine actually pointed me to a separate file, Documentation/HD-Audio-Models.txt, which, for my driver version is located here and contains no section related to ALC1200 codecs. I tried putting the driver options probe-mask=1 and model=auto in a config file for modprobe, as suggested elsewhere, but this just lead to snd-hda-intel not able to load at all anymore. I also tried installing the linux-backports-modules-alsa package for my kernel, because the description sounded promising, but that didn't change anything, either.

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• Oracle with Kerberos authentication and Windows 2003 Server as KDC

  - by Supaplex

  Hello everyone. I am running Oracle 10.2 on a Windows 2003 Server SP2 which is also the domain controller on the network. I wish to switch authentication method from NTS to Kerberos. I have spent a lot of time trying to configure Oracle with Kerberos authentication from the Oracle Advanced Security option from the Net Manager utility. I have disabled NTS so Kerberos is promoted as the preferred authentication method. But as soon as the configuration is saved from Net Manager and I restart the Oracle server service, Oracle will not start. I don't know what Oracle is complaining about, because I don't know where to look for the Oracle error log. My first question is: how can I figure out what's bugging Oracle? My second question: is there a good tutorial for setting up Oracle on a Windows 2003 with Kerberos Authentication, where the Windows 2003 Server is the KDC? Maybe there is a book I can get? I have read Oracles own guide, but it is mostly for Linux/Unix. Thanks a lot!

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• Why are my socks proxies slow

  - by vps_newcomer

  I have a linux vps, and i have tried a few socks proxy setups to test their performance: All tests were using speedtest.net The standard ssh tunnel proxy 0.8mbit/s download and 0.1-0.2mbit/s upload speeds dante-server proxy 1.3mbit/s download and 0.4-0.5mbit/s upload I am wondering why are these speeds so slow? Is anything shaping them? Is it just the nature of socks proxies? I know that the ssh tunnel has to do encryption and what not so that is why its slow, but i was surprised to see that the second setup was also quite slow. On the VPS i have received download speeds of 25MB/s per second (thats about 200mbit/s and upload speed of atleast 5MB/s (haven't got a good enough pipe to test anything faster). The other option i was going to try is to setup OpenVPN and see how that goes, however i need to find a good tutorial as it's fairly complicated to setup. So why is it so slow? How can i test to see where the bottleneck is? How can i make it faster :D

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• FreeBSD ZFS RAID-Z2 performance issues

  - by Axel Gneiting

  I'm trying to build my own network attached storage based on FreeBSD+ZFS+standard components, but there are strange performance issues. The hardware specs are: AMD Athlon II X2 240e processor ASUS M4A78LT-M LE mainboard 2GiB Kingston ECC DDR3 (two sticks) Intel Pro/1000 CT PCIe network adapter 5x Western Digital Caviar Green 1.5TB I created a RAID-Z2 zpool from all disks. I installed FreeBSD 8.1 on that zpool following the tutorial. The SATA controllers are running in AHCI mode. Output of zpool status: pool: zroot state: ONLINE scrub: none requested config: NAME STATE READ WRITE CKSUM zroot ONLINE 0 0 0 raidz2 ONLINE 0 0 0 gptid/7ef815fc-eab6-11df-8ea4-001b2163266d ONLINE 0 0 0 gptid/80344432-eab6-11df-8ea4-001b2163266d ONLINE 0 0 0 gptid/81741ad9-eab6-11df-8ea4-001b2163266d ONLINE 0 0 0 gptid/824af5cb-eab6-11df-8ea4-001b2163266d ONLINE 0 0 0 gptid/82f98a65-eab6-11df-8ea4-001b2163266d ONLINE 0 0 0 The problem is that write performance on the pool is very very bad (<10 MB/s) and every application that is accessing the disk is unresponsive every few seconds when writing. It seems like writing is fine until the ZFS ark cache is full and then ZFS stalls the entire system I/O till it's finished writing that data. Also I'm getting kmem_malloc to small kernel panics. I've already tried to put vm.kmem_size="1500M" vm.kmem_size_max="1500M" into /boot/loader.conf, but it doesn't help. Does anyone know what's going on here? Am I really not having enough memory for ZFS to handle this RAID-Z2?

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• A-2-Z web hosting on Amazon AWS

  - by JDelage

  All, I am studying web dvp, and one of my classes is project-based. We have to build a functional site that demonstrate our understanding of: HTML, CSS, Javascript, php, MySQL, And potentially Ajax or some other web component. For the project, we can use a local server using WampServer and basically build the site entirely on our laptop. If I have time, I would like to create a real site, and I thought it would be a good way to familiarize myself with Amazon's AWS services. So if I purchase a domain name, can I rely on AWS to host the site from A-to-Z? I understand I can use AWS to host content, the database, and do the background computations, if needed. What else do I need and what are the parts that AWS cannot help me with? Second, is there good documentation for a beginner to navigate AWS and learn how to use it (either on Amazon, or some 3rd party sites, or even a good book, as long as is up to date). The ideal documentation would be a tutorial on creating a web site from a-to-z on AWS, as detailed as possible. As you can guess, I have limited understanding of the IT issues. I have 0 Linux or sysadmin experience, but this is a good opportunity to change that. I hope you can help me. Thank you, JDelage PS: Please keep the answers AWS-specific. At this point, I am only interested in alternative services to the extent that they plug a hole in Amazon's offering.

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• How to set up the jdbc driver to connect to hsqldb from libreoffice?

  - by rumtscho

  I am trying to "split" a LibreOffice .odb file into a HSQL database and an OpenOffice document containing forms and macros. I am trying to follow the instructions from this thread: Within a few minutes you can convert your embedded HSQLDB to a stand-alone HSQLDB which is just a very fine database engine. 1) Download and extract the current version from http://hsqldb.org/ and point the Java class path in ToolsOptionsJava to the new hsqldb.jar 2) Extract the database folder from your embedded database and rename the files data, properties, script to name.data name.properties, name.script where "name." is an arbitrary name prefix. 3) Connect a Base document to an existing JDBC database such as jdbc:hsqldb:file:/home/chenier/hsqldb/name;default_schema=true;shutdown=true;hsqldb.default_table_type=cached;get_column_name=false (again, "name" refers to your own file name prefix). This local single-user connection gives you much more than the embedded HSQLDB. 4) Copy queries, forms and reports from the old database over to the new one. The wizard presents me with a window expecting two inputs: a "Datasource URL" and a "JDBC driver class". As far as I can tell, the tutorial above only tells me what to put into the Datasource URL. As for the JDBC driver class, I have no idea what to write into this field. I tried the fully-qualified name of the Java class, org.hsqldb.jdbc.JDBCDriver as given in the HSQLDB documentation. When that failed, I tried the physical path /var/lib/hsqldb/lib/hsqldb.jar (although that should have been unnecessary, because first I pointed to this path as described under 1 and then restarted LibreOffice). In both cases, "Test class" failed with the message "The JDBC driver could not be loaded". OpenOffice's documentation doesn't say anything sensible about the field, it was something like "enter the JDBC driver in this box". Any ideas what I should enter there to get the connection working?

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• Mac updated just now, postgres now broken

  - by Dave

  I run postgres 9.1 / ruby 1.9.2 / rails 3.1.0 on a maxbook air for local dev. It's all been running smoothly for months, (though this is the first time I've done development on a mac.) It's a macbook air from last year, and today I got the mac osx software update message as I have a few times before, and my system downloaded approx 450mb of updates and restarted. It now says it's on OSX 10.7.3. Point is, postgres has stopped working, when I start my thin server (mirror heroku cedar) as normal, and then browse to my rails app I get: PG::Error could not connect to server: Permission denied Is the server running locally and accepting connections on Unix domain socket "/var/pgsql_socket/.s.PGSQL.5432"? What happened? After browsing around a few questions I'm still confused, but here's some extra info: Running psql from command line gives same error I can run pgadmin 3 and connect via it and run SQL no problems Running which psql shows the version as /usr/bin/psql I created a PostgreSQL user back when I got the mac (it's always been on lion) I've no idea why, almost certainly I was following a tutorial which I neglected to store in my notes. Point is I am aware there is a _postgres user as well. I know it's rubbish, but apart from a note on passwords, I don't have any extra info on how I configured postgres - though the obvious implication is that I did not use the _postgres user. Anyone have suggestions or information on what might have changed / what I can try to debug and fix? Thanks. Edit: Playing around based on this question and answer: http://stackoverflow.com/questions/7975414/check-status-of-postgresql-server-mac-os-x, see this string of commands: $ sudo su postgreSQL bash-3.2$ /Library/PostgreSQL/9.1/bin/pg_ctl start -D /Library/PostgreSQL/9.1/data pg_ctl: another server might be running; trying to start server anyway server starting bash-3.2$ 2012-04-08 19:03:39 GMT FATAL: lock file "postmaster.pid" already exists 2012-04-08 19:03:39 GMT HINT: Is another postmaster (PID 68) running in data directory "/Library/PostgreSQL/9.1/data"? bash-3.2$ exit

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• Limit copssh users to home directory Windows 7

  - by Siriss

  Hello all- I have found these two sites below: CopSSH SFTP -- limit users access to their home directory only and http://blogs.windowsnetworking.com/wnadmin/2006/11/07/copssh-restricting-users-access/ as well as the Copssh website, but upon completion they do not seem to work. I have copssh installed and I have a separate Windows account "sftpuser" created that is used to connect. The connection works just fine, but I want to limit that user to just their home directory and sub folders. I have 3 hard drives, the C:, a W: and an S: and I want the FTP account to only be able to access the W: drive and its contents (the root of the W: drive is the FTP home directory). Right now "sftpuser" can access all folders, including jump drives to C:, and S:. The linked tutorials do not seem to work, because it seems when I create a group "ftpusersgroup" and add "sftpuser" to the group, and then deny "ftpusersgroup" access to the C: drive, the service breaks and I can no longer login. I have undone everything and am ready to start fresh. Does anyone know how to do this, or is there a better tutorial that someone has or has found? I hope this makes sense. Thank you very much for any help!

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• PHP crashing during oAuth scripts

  - by FunkyChicken

  I just installed Nginx 1.2.4 and PHP 5.4.0 (from svn) (php fpm). CentOs 5.8 64 The problem I have is that PHP crashes the moment I run any social oAuth scripts. I have tried to log into Facebook, Twitter and Google with various scripts that I know work on my other servers. When I load the scripts I get a 502 error from Nginx. And I find these errors in the log: in php-fpm log: WARNING: [pool www] child 23821 exited on signal 11 (SIGSEGV) after 1132.862984 seconds from start in nginx log: ERROR: recv() failed (104: Connection reset by peer) while reading response header from upstream From what I can see, it goes wrong when PHP tries to make a request to any of the oAuth servers. https://github.com/mahmudahsan/PHP-SDK-3.0---Graph-API-base-Facebook-Connect-Tutorial-Source for example is one of the scripts that works perfectly on my other machines, but causes PHP to crash. I found: http://stackoverflow.com/questions/3616191/nginx-php-fpm-502-bad-gateway which seems to be a similar problem, but I cannot find a way to solve it. +++ UPDATE +++ Now I have been doing some debugging in 1 of the scripts that is playing up. If you go to line 808 http://pastebin.com/gSnzRtXb it runs the curl_exec() command. When that is ran, it crashes. If i echo'test';exit; just above that line, it echo's correctly, if i do it below that line, php crashes. Which means it's that line 808 which causes the crash. So I made a very simple script to do some testing: http://pastebin.com/Rshnyhcm which also uses curl_exec, but that runs just fine. So I started to dig deeper into that query from the facebook script to see what values the $opts array contains from line 806. Output of that array is: http://pastebin.com/Cq9ffd3R What the problem is, I still have no clue :(

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• Where is the bare cygwin package list located and how do I manipulate it?

  - by matnagel

  Where is the bare cygwin package list located and how do I manipulate it programmatically or from a shell or with a different method than the gui? I know the gui (setup.exe), and I'd love to go one or more levels deeper. I can retrieve a list of selected/installed packages ( http://serverfault.com/questions/83456/cygwin-package-management ), but how do I write it back or to a different machine? What I have in mind is when I install a new windows I would like to start with my package list in text form, an apply or inject it somehow to the new system. Where is it? In the registry? In a binary file? in a local database? Or has anybody done this, is there a tool, a tutorial? The essence of what I want is to manipulate the selected package list with something else than the gui. It is ok for me to use the gui for the setup process. So I could imagein manipulating the package List and then run setup.exe and just click through it. Note: I do not want to manipulate the list of already installed packages but of packages that "should be installed". But if htis is not possible, maybe there is some workaround. E.g add an outdated version as installed and the installer will then install the new version.

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• few basic questions on webhosting (namservers & dns records)

  - by claws

  I bought a domain name on name.com & I want to use free webhosting on 110mb.com By default name.com integrates services of Google apps. Name server entries are ns1.name.com ns2.name.com ns3.name.com ns4.name.com When I registered on 110mb.com it gave me two addresses ns1.110mb.com ns2.110mb.com This is where I'm lost. The concept is that "Domain name should point to an address of the server where the website is hosted" right? Then why are these 4 entires by default. How exactly is it working? should I remove these 4 and then add 110mb.com servers or just append 110mb.com server addresses to name.com ones. I would like to use google apps. If I change these name server addresses would that remove google apps? I especially want to use email service of google. And I really don't understand what is CNAME, MX, or something something. I want to learn about these stuff & how it exactly works. When I search for webhost tutorial. I'm unable to find any fruitful results.

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• Do I need to restart my server after editing fstab and mtab?

  - by jaypabs

  I'm just wondering if I need to restart my server after editing fstab and mtab. I changed something in this file manually due to problem with awstats report. I am using ISPConfig 3 with the help of the tutorial from howtoforge. But due to removing/deleting of some account, the configuration of fstab and mtab messed up. I also ask this question at howtoforge forum but until now no one has answered. If you'd like to read my question please visit it here. I tried very hard to fix the problem w/o luck. Update: Here's what happen to my fstab: Before the value was (I omitted the other): /var/log/ispconfig/httpd/mydomain.com /var/www/clients/client1/web1/log none bind,nobootwait 0 0 /var/log/ispconfig/httpd/example.com /var/www/clients/client1/web2/log none bind,nobootwait 0 0 So I changed it to the correct path: /var/log/ispconfig/httpd/mydomain.com /var/www/clients/client1/web2/log none bind,nobootwait 0 0 /var/log/ispconfig/httpd/example.com /var/www/clients/client1/web3/log none bind,nobootwait 0 0 I also found mtab to have the same value as above that's why I edited it manually. from: /var/log/ispconfig/httpd/mydomain.com /var/www/clients/client1/web1/log none rw,bind 0 0 /var/log/ispconfig/httpd/example.com /var/www/clients/client1/web2/log none rw,bind 0 0 to: /var/log/ispconfig/httpd/mydomain.com /var/www/clients/client1/web2/log none rw,bind 0 0 /var/log/ispconfig/httpd/example.com /var/www/clients/client1/web3/log none rw,bind 0 0 I edited those value because the correct path of mydomain.com and example.com should be under web2 and web3 folder respectively. As of now the log of example.com is pointed to: /var/www/clients/client1/web2/log when it should be: /var/www/clients/client1/web3/log So I am thinking that this is because of fstab and mtab. Please guide me how to point the log correctly to it's default directory. I explain the scenario one by one at this link. to dawud: Based on your example mount -o remount,noexec /var, should I run mount -o remount,noexec /var/log/ispconfig/httpd/example.com?

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• DKIM- Filter No Signature Data

  - by Vineet Sharma

  I have installed DKIM-Filter on Postfix after reading this tutorial http://www.unibia.com/unibianet/systems-networking/how-setup-domainkeys-identified-mail-dkim-postfix-and-ubuntu-server My email now has a DKIM signature but still it is landing in the SPAM folder. Here is the header Received-SPF: neutral (google.com: 69.164.193.167 is neither permitted nor denied by best guess record for domain of [email protected]) client-ip=69.164.193.167; Authentication-Results: mx.google.com; spf=neutral (google.com: 69.164.193.167 is neither permitted nor denied by best guess record for domain of [email protected]) [email protected]; dkim=hardfail (test mode) [email protected] Received: from promote.a2labs.in (localhost [127.0.0.1]) by promote.a2labs.in (Postfix) with ESMTPA id 34858530E8 for <[email protected]>; Mon, 28 Feb 2011 12:23:07 +0530 (IST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=a2labs.in; s=mail; t=1298875987; bh=bo+H1VYPIHMja2u7i1lnzr4k/j4Pe8iSf79bVw94XpI=; h=To:Subject:Message-ID:Date:From:Reply-To:MIME-Version: Content-Type:Content-Transfer-Encoding; b=nhTdlnUwo0iUJ92ycQzKSRjw 5Pfya0DJcJrAc8Mr2hIv8OLpgzBCzdOMWTGqR5nuUmAzgCGYBhYAM2XZwVxo9JG/iz7 oYKysmNQnskFx0TRyW3UOkDWcfHcPnCL6Y7fGzZWinmsyjsg47k+mKZg/e8jqlwTAMO PYKkt5pBz7SM0= Also my mail.err file shows Feb 28 12:17:03 ivineet dkim-filter[32181]: 1F788530E1: no signature data Feb 28 12:18:02 ivineet dkim-filter[32181]: 432BA530E2: no signature data How to fix it

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• How to figure out what VirtualBox did?

  - by AndrejaKo

  I'm trying to boot a custom made-in-ASM OS on my recent laptop. The OS is intended to be installed on a floppy and during make creates a bootable floppy. Since I don't have a floppy drive, I installed it on a virtual floppy. After that I used WinToFlash's create bootable MS-DOS USB drive option to transfer the floppy image to an USB flash drive. Then I tried to boot my computer from it but got only a repeating broken string on screen. After all that I made a virtual hard disk image form the flash drive using this tutorial and tried to boot a virtual machine from it. First time I got same problem as on real computer. I then used the reset option and next time and every time after that OS booted correctly. My question is: How do I figure out what exactly happened to the virtual machine between first and second boot? UPDATE I just created a new VM with default settings for windows XP and it has the same problem that I have on a real computer. I was unable to reproduce the procedure which made the first VM work correctly.

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