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  • Making evince the default application for embedding PDFs in firefox in ubuntu

    - by Seamus
    While I'm on the subject of complaining about things that upgrading to ubuntu 10.04 broke (see here), another problem that happened on moving from 9.04 to 9.10 (I think) is this: Firefox used to open embedded pdf files with evince and that was fine. Now it opens them with okular, which I don't like for several reasons. (Pg Up, Pg Dn keys don't work. I don't like the KDE save file dialogue box, because I'm used to gnome. ) So my question is: how do I change which program is used to embed PDFs in firefox in ubuntu?

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  • How to mount /tmp in /mnt on EC2?

    - by Claudio Poli
    I was wondering what is the best way to mount the /tmp endpoint in the ephemeral storage /mnt on an EC2 instance and give the ubuntu user default write permissions. Some suggest editing /etc/rc.local this way: mkdir -p /mnt/tmp && mount --bind -o nobootwait /mnt/tmp /tmp However that doesn't work for me (files differs). I tried editing the default fstab entry: /dev/xvdb /mnt auto defaults,nobootwait,comment=cloudconfig 0 2 replacing /mnt with /tmp and and giving it a umask=0777, however it doesn't work because of cloudconfig. I'm using Ubuntu 12.04. Thanks.

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  • HTML Redirect issue with Apache2

    - by Vijit Jain
    I am facing an issue with the ProxyPass on my Apache server on Ubuntu. I have configured Apache to deal with Virtual Hosts on my server. There is an application with runs on the server and uses ports 8001 8002. I need to do something like www.example.com/demo/origin to display the contents that I would see when I visit www.example.com:8000. The contents to be displayed are a host of HTML pages. This is the section of the virtual host config that has issues ProxyPass /demo/vader http://www.example.com:8001/ ProxyPassReverse /demo/vader http://www.example:8001/ ProxyPass /demo/skywalker http://www.example.com:8002/ ProxyPassReverse /demo/skywalker http://www.example.com:8002/ Now when I visit example.com/demo/skywalker, I see the first page of port 8002, say the login.html page. The second should have been www.example.com/demo/skywalker/userAction.html, instead the server shows www.example.com:8000/login.html. In the error logs I see something like: [Mon Nov 11 18:01:20 2013] [debug] mod_proxy_http.c(1850): proxy: HTTP: FILE NOT FOUND /htdocs/js/demo.72fbff3c9a97f15a4fff28e19b0de909.min.js I do not have any folder htdocs in the system. This is only an issue while viewing .html pages. Otherwise, no such issue occurs. When I visit localhost:8001 it will show any and all contents without any errors or issues. www.example.com/demo/skywalker displays a separate webpage www.example.com/demo/origin displays a different webpage and www.example.com/demo/vader displays a different webpage. I have also tried to use one more type of combination, <Location /demo/origin/> ProxyPass http://localhost:8000/ ProxyPassReverse http://localhost:8000/ ProxyHTMLURLMap http://localhost:8000/ / </Location> This fails as well. I would greatly appreciate if anyone can help me resolve this issue.

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  • How to find cause of main file system going to read only mode

    - by user606521
    Ubuntu 12.04 File system goes to readonly mode frequently. First of all I have read this question file system is going into read only mode frequently already. But I have to know if it's not caused by something else than dying hard drive. This is server provided by my client and I am just runing there some node.js workers + one node.js server and I am using mongodb. From time to time (every 20-50h) system suddenly makes filesystem read only, mongodb process fails (due read-only fs) and my node workers/server (which are started by forever) are just killed. Here is the log from dmesg - I can see there some errors and messages that FS is going to read-only, and there is also some JOURNAL error but I would like to find cause of those errors.. http://speedy.sh/Ux2VV/dmesg.log.txt edit smartctl -t long /dev/sda smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.5.0-23-generic] (local build) Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net SMART support is: Unavailable - device lacks SMART capability. A mandatory SMART command failed: exiting. To continue, add one or more '-T permissive' options. What I am doing wrong? Same is for sda2. Morover now when I type any command that not exists in shell I get this: Sorry, command-not-found has crashed! Please file a bug report at: https://bugs.launchpad.net/command-not-found/+filebug Please include the following information with the report:

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  • Rails3 environment running very slow on Windows XP, Ubuntu 9.04, Ubuntu 9.10

    - by bergyman
    I've tried all three (granted the Ubuntu versions were via VirtualBox with XP as a host, but I gave the images all the available RAM my system has). Loading the rails environment is taking 30-60 seconds. rails console, rake test:units - anything that requires rails to load up. And not just on the first go - every time. I've even used autotest to see if it helps with execution time for unit tests, but it doesn't. Any time I change one test, it still takes 30 seconds to load them, and then about 4 seconds to execute. Has anyone else come across this issue? Has anyone figured out any way to fix this?

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  • tomcat 5.5 startup script on Ubuntu server

    - by Registered User
    Can any one share their Tomcat startup script I am looking for a tomcat start up script on a Ubuntu machine. My Ubuntu is 10.04 server. The tomcat is 5.5.30. It is in /opt/apache-tomcat-5.5.31 I tried a script #!/bin/bash # # tomcat # # chkconfig: # description: Start up the Tomcat servlet engine. # Source function library. . /lib/lsb/init-functions RETVAL=$? CATALINA_HOME="/opt/apache-tomcat-5.5.31" case "$1" in start) if [ -f $CATALINA_HOME/bin/startup.sh ]; then echo $"Starting Tomcat" /opt/apache-tomcat-5.5.31/bin/startup.sh fi ;; stop) if [ -f $CATALINA_HOME/bin/shutdown.sh ]; then echo $"Stopping Tomcat" /opt/apache-tomcat-5.5.31/bin/shutdown.sh fi ;; *) echo $"Usage: $0 {start|stop}" exit 1 ;; esac exit $RETVAL but it did not worked after a reboot. But the same script works if I do /etc/init.d/tomcat start or /etc/init.d/tomcat stop I have done update-rc.d tomcat defaults as it is a Ubuntu server but on reboot all of this fails to work.

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  • Gmail notification in Ubuntu's native mail icon.

    - by D Connors
    So, new Ubuntu 10.04 up and running. Playing with the interface eventually got me curious about something. Up until now, I've only used the chat and broadcasting functionalities of the mail icon in Ubuntu's top panel, mostly because I take care of my mail on firefox so I don't need one more program (empathy) running on my poor little netbook. I'm currenty using gnome-gmail to set gmail as my default mail client in Ubuntu. But, when I click on the "Set up mail" item, inside the Panel's Mail icon, it simply brings up empathy. My question is: Is it possible (in any way whatsoever) to have my gmail notifications up there, configured so that clicking it will just take me to a gmail tab in Firefox? (instead of opening up empathy) This is really just some frivolous interest of mine, nothing important. Right now I'm using check-gmail to notify me of new mail, but the panel is really cramped up on my netbook, so it'd be nice to free up some room by getting rid of check-gmail and only using Ubuntu's mail icon. Ok, hope I was clear enough.

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  • nginx starts up before apache

    - by paullb
    I've been fumbling through setting up redmine on a unbuntu (12.04) box and somewhere along the line NginX got set up and now apache no longer loads because nginx has already grabbed the port. I tried removing NginX with the below command but that didn't seem to make any difference. When I restarted the server and pointed my web browser I still got the "Welcome to NginX" message sudo apt-get purge nginx I have confirmed that NginX is gone because when I run the above now I get as an output Package nginx is not installed, so not removed Yet everytime I start the machine it is running again. I noticed the following for the running processes (if that is helpful) root 923 0.0 0.0 76784 1280 ? Ss 03:00 0:00 nginx: master process /usr/sbin/nginx www-data 925 0.0 0.0 77092 1704 ? S 03:00 0:00 nginx: worker process www-data 926 0.0 0.1 77092 2204 ? S 03:00 0:00 nginx: worker process www-data 927 0.0 0.0 77092 1704 ? S 03:00 0:00 nginx: worker process www-data 928 0.0 0.0 77092 1704 ? S 03:00 0:00 nginx: worker process Any advice for bringing back apache2 as the "default" (for lack of a better term) web server?

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  • sorry, the maximum allowed clients from your host (10) are already connected" FTP error

    - by Sejanus
    Hello, I keep getting the "sorry, the maximum allowed clients from your host (10) are already connected" error whenever I try to transfer a large number of files. At first I thought it's a filezilla bug, however I get the same error basically with every FTP client I've tried, including Total Commander under Wine. I do not get that error using Windows. I did try to limit maximum allowed connections for Filezilla, both in server settings and in global settings, it didnt change anything. I did try to switch between passive and active modes (not sure if it's related at all, just last desperate attempt), and it didnt change anything either. When I try to use native ftp client (not sure how is it called, the one in Places - Connect to a server) I get abstract "connection refused" error every time I transfer large number of files. Connection is refused for separate particular files, if I click "Ignore" each time the rest of files are transfered perfectly well, so I assume it's the very same error. Anything I could do? This really drives me mad, transfering large numbers of files is a part of my everyday job... P.S. and this happens with many different FTP servers. Also I dont get this error in Windows. So I assume it's not a server problem. P.P.S. I am aware of similar question here, the answer provided just didn't solve it to me.

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  • Path of md device wrong after reboot

    - by flammi88
    I have to set up a software raid (level1) on a Ubuntu server 12.04. It should serve files in the network via Samba. The server has the following disks: 250gb Sata hdd (Ubuntu is installed on that drive) 2 TB Sata hdd (first disk in raid array, data disk) 2 TB Sata hdd (second data disk) I created one partition on every data disk with the type Linux raid autodetect. In the second step I created the raid1 with the following command: mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1 After that, I added the array to the mdconf: mdadm --examine --scan >> /etc/mdadm/mdadm.conf The problem is: After a reboot the array is not available on the path /dev/md0. Instead of that it gets reassembled as /dev/md/0 but it is not very reliable. Has anybody a solution for this issue?

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  • Elasticsearch won't start anymore

    - by Oleander
    I restarted my elasticsearch instance 5 days ago and I haven't manage to start it since then. I get no output in the log file /var/log/elasticsearch/ nor does the elasticsearch binary print any information when running at using elasticsearch -f. I once manage to get this output. [2012-11-15 22:51:18,427][INFO ][node ] [Piper] {0.19.11}[29584]: initializing ... [2012-11-15 22:51:18,433][INFO ][plugins ] [Piper] loaded [], sites [] Running curl http://localhost:9200 resulted in curl: (7) couldn't connect to host. I've tried increasing the memory from 3gb to 10gb, but that didn't make any diffrence. Running /etc/init.d/elasticsearch start takes 30 seconds. ps aux | grep elasticsearch results in this output. /usr/local/share/elasticsearch/bin/service/exec/elasticsearch-linux-x86-64 /usr/local/share/elasticsearch/bin/service/elasticsearch.conf wrapper.syslog.ident=elasticsearch wrapper.pidfile=/usr/local/share/elasticsearch/bin/service/./elasticsearch.pid wrapper.name=elasticsearch wrapper.displayname=ElasticSearch wrapper.daemonize=TRUE wrapper.statusfile=/usr/local/share/elasticsearch/bin/service/./elasticsearch.status wrapper.java.statusfile=/usr/local/share/elasticsearch/bin/service/./elasticsearch.java.status wrapper.script.version=3.5.14 /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java -Delasticsearch-service -Des.path.home=/usr/local/share/elasticsearch -Xss256k -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+HeapDumpOnOutOfMemoryError -Djava.awt.headless=true -Xms1024m -Xmx1024m -Djava.library.path=/usr/local/share/elasticsearch/bin/service/lib -classpath /usr/local/share/elasticsearch/bin/service/lib/wrapper.jar:/usr/local/share/elasticsearch/lib/elasticsearch-0.19.11.jar:/usr/local/share/elasticsearch/lib/elasticsearch-0.19.11.jar:/usr/local/share/elasticsearch/lib/jna-3.3.0.jar:/usr/local/share/elasticsearch/lib/log4j-1.2.17.jar:/usr/local/share/elasticsearch/lib/lucene-analyzers-3.6.1.jar:/usr/local/share/elasticsearch/lib/lucene-core-3.6.1.jar:/usr/local/share/elasticsearch/lib/lucene-highlighter-3.6.1.jar:/usr/local/share/elasticsearch/lib/lucene-memory-3.6.1.jar:/usr/local/share/elasticsearch/lib/lucene-queries-3.6.1.jar:/usr/local/share/elasticsearch/lib/snappy-java-1.0.4.1.jar:/usr/local/share/elasticsearch/lib/sigar/sigar-1.6.4.jar -Dwrapper.key=k7r81VpK3_Bb3N_5 -Dwrapper.port=32000 -Dwrapper.jvm.port.min=31000 -Dwrapper.jvm.port.max=31999 -Dwrapper.disable_console_input=TRUE -Dwrapper.pid=23888 -Dwrapper.version=3.5.14 -Dwrapper.native_library=wrapper -Dwrapper.service=TRUE -Dwrapper.cpu.timeout=10 -Dwrapper.jvmid=1 org.tanukisoftware.wrapper.WrapperSimpleApp org.elasticsearch.bootstrap.ElasticSearchF My current system: ElasticSearch Version: 0.19.11, JVM: 23.2-b09 Ubuntu 12.04 LTS I've tried re-install elasticsearch, removing old directories. Why can't I get it to start?

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  • DNS configuration issues. Clients inside network unable to resolve DNS server's name

    - by hydroparadise
    Setup the DNS service on Ubuntu 12.04 64 and all apears to be well except that my dhcp clients do not recognize my DNS servers hostname. When doing a nslookup on one of my Windows clients, I get C:\Users\chad>nslookup Default Server: UnKnown Address: 192.168.1.2 Where I would expect the FQDN in the spot where UnKnown is seen. The DNS server know's itself pretty well, but I think only because I have an entry in the /etc/hosts file to resolve. There's so many places to look I don't even know where to begin. Are there any logs I can look at? Something. Places I've looked at and configured: /etc/bind/zones/domain.com.db /etc/bind/zones/rev.1.168.192.in-addr.arpa /etc/bind/named.conf.local EDIT: '/etc/bind/zones/rev.1.168.192.in-addr.arpa' @ IN SOA dns-serv1.mydomain.com [email protected]. ( 2006081401; 28800; 604800; 604800; 86400 ) IN NS dns-serv1.mydomain.com. 2 IN PTR dns-serv1 2 IN PTR mydomain.com EDIT 2: '/etc/bind/named.conf.local' zone "mydomain.com" { type master; file "/etc/bind/zones/mydomain.com.db"; }; zone "1.168.192.in-addr.arpa" { type master; file "/etc/bind/zones/rev.0.168.192.in-addr.arpa"; };

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  • ubuntu hardrive repartition without uninstalling ubuntu or windows 7 and losing data of hardrive

    - by user141692
    I have and asus r500v with 750 gb gpt system uefi motherboard core i7 3610qm, nvidia geforce gt, with ubuntu and w7 dual boot, I had problems installing ubuntu because of the grub but I fix it with https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/807801, but I still have the problem of "warning: the partition is misaligned by 3072 bytes. this may result iin very poor performance. Repartitioning is suggested" in every linux partitioin I made and my 750 gb is not being used at the maximun capacity it only uses 698 gb. I want to make partitions so that the warning doesnt show up and I can use the maximum capacity of the HDD, as I did with another dual boot laptop (compaq presario cq40). I have the following partitions: unknown 1.0Mb: partition type: lynux Basic DAta partition, device: /dev/sda2 Usage: --, Partition flags: --, partition label:-- warning: the partition is misaligned by 3072 bytes. this may result in very poor performance. repartitioning is suggested. -system 210 Mb FAt, usage: Filesystem, partition type: EFI system Partition, Partition Flags:--, Label: system, Device: /dev/sda1, partition label: EFI system partition, Capacity 210MB, avilable:--, Mount Point: mounted at /boot/efi -134 Mb NTFS, usage: filesystem, partition type: linux basic data partition, partition flags:.--, device: /dev/sda7, partition label: --, capacity: 134MB,available:--, mount point: not mounted -OS 250 GB NTFS, usage: file system, partititon type: linux basic data partition, partition flags: --, type: NTFS, label: OS, device: /dev/sda3, partition label: basic data partition, capacity: 250 GB, available:-, mount point: not mounted -10GB FAT 32, usage: filesystem, partition type: EFI system partition, partition flags:--, type: FAT 32, label: --, device: /dev/sda4, partition label: --, capacity: 10GB, available:--, mount point: not mounted warning: the partition is misaligned by 3072 bytes. this may result in very poor performance. repartitioning is suggested. -10gb ext 4, usage: file system, partition type: linux basic data partition, partition flags:--, type: EXT4(version1) label:--, device: /dev/sda9, partition label:--, capacity: 10 GB, available:--, mount point at / warning: the partition is misaligned by 1536 bytes. this may result in very poor performance. repartitioning is suggested. -478GB ext4, usage: filesystem, partition type: linux basic data partition, partition flags:--, type: EXT4, label:--, device: /dev/sda5, partition label:--, capacity: 478gb, available:--, mount point: mounted at /home warning: the partition is misaligned by 512 bytes. this may result in very poor performance. repartitioning is suggested. -2.0gb Swap 2.0Gb, usage: swap space, partition type: linux swap partitioin, partition flags:-, device: /dev/sda6, partition label: capacity: 2.0gb warning: the partition is misaligned by 512 bytes. this may result in very poor performance. repartitioning is suggested. and as you can see it is not well organized so please help me to organize the partitions witahout uninstalling the w7, and if possible the grub2

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  • How to debug xsane "no devices available" error on 64 bit Ubuntu 10.04

    - by BD at Rivenhill
    I have a Brother MFC-J615W printer/scanner and I wish to use the scanning feature across a network with a computer running 64-bit Ubuntu 10.04. I have installed the drivers from the Brother website and followed all of the instructions, and printing works fine, but xsane (installed from repositories) produces a popup with the message "no devices available" on startup. I recently had success with a similar approach when installing drivers for a Brother MFC-495CW on 32-bit Unbuntu 9.10, so I am aware of issues such as requiring root access if the driver permissions are not set correctly, but running xsane as root does not solve this problem. Are there any tools available to debug this problem further or does anyone have advice on how to proceed?

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  • "No version information available" - After installing Postgres

    - by intellidiot
    I have installed Postgres 9.1.4 on an Ubuntu 12.04 (precise) 64-bit from here http://www.openscg.com/se/postgresql/packages.jsp, but right after installing many commands (programs) are throwing these following warnings in different combinations: /opt/postgres/9.1/lib/libxml2.so.2: no version information available /opt/postgres/9.1/lib/libcrypto.so.1.0.0: no version information available /opt/postgres/9.1/lib/libssl.so.1.0.0: no version information available Though this is not restricting anything, this is often getting very annoying. Is there a way to get rid of this without uninstalling Postgres?

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  • Setup NTPD in Ubuntu to sync Windows AD

    - by David
    I am setting up my Ubuntu 10.0.4 server to sync clock with a Windows 2008 AD. As none of the "remote" has a "*" in front (worst it had a blank space in front), does it mean no time sync source is selected? The offset just keep increasing. I tried ntpdate to the same server it worked OK. remote refid st t when poll reach delay offset jitter ============================================================================== 172.18.133.201 .LOCL. 1 u 38 64 377 0.827 277.677 58.375 Any help to fix this? Here is my ntp.conf (with all comments removed) driftfile /var/lib/ntp/ntp.drift statistics loopstats peerstats clockstats filegen loopstats file loopstats type day enable filegen peerstats file peerstats type day enable filegen clockstats file clockstats type day enable restrict -4 default kod notrap nomodify nopeer noquery restrict -6 default kod notrap nomodify nopeer noquery restrict 127.0.0.1 restrict ::1 server 172.18.133.201 iburst

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  • Black screen on Ubuntu 12.04

    - by user1648371
    I've just upgraded to Ubuntu 12.04 and I'm experiencing some problems. The first thing I noticed is that when I click the Workspace switcher all I get is a black screen (I can guess where the different workspaces are located and clicked on them, not a practical solution though). In addition when I lock the screen or suspend the laptop (a Vaio VPCEB4M1E) I get a shifted screen (I see the right most vertical stripe on the left size of the monitor and nothing about all the rest, to put it clearly I can see the gear that allows me to turn the pc off, etc, but not much more..) when I go to the additional driver menu I see the "ATI/AMD proprietary FGLRX graphics driver" are installed and the post-release update version is available. I don't know if the problem is driver related, so before doing anything I'd like to get some suggestions from you guys. Thanks you!

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  • Horde complains that Imp is not running

    - by Eric J.
    I'm a mostly-Windows guy tasked with setting up email on an Ubuntu 12.04 instance at AWS and hit the following error: When I browse to Horde, after entering my administrative credentials, I get the error message: A fatal error has occurred imp is not activated. Details have been logged for the administrator. I am following the following, quite detailed guide http://www.exratione.com/2012/05/a-mailserver-on-ubuntu-1204-postfix-dovecot-mysql/ This is happening at Step 20, at the text Now fire up you web browser and navigate to your server at http://mail.example.com/ to verify that you can log in as the configured administrative mail user. (of course I used my actual domain). Questions Where is Horde logging the "details"? Any thoughts on why this might happen? I found Google hits suggesting that php5-mcrypt might be missing, but I verified it is installed and up-to-date in my case.

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  • How to do an automated installation of Ubuntu on 100 Remote machines?

    - by user40876
    Help!  I desperately need some advice / help... I want an automated install (via CD or USB) of Ubuntu 10.04 ...on 100 remote machines located all over the country, using a Kickstart configuration file accessible from my web server. How do I create the boot CD (or USB)? How do I specifically add the boot parameters to that boot CD (or USB) to tell it the URL to use for it's automated Kickstart install?

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  • Can't find disk usage in one directory

    - by Xster
    Similar questions are asked frequently but no suggested answers solved my issue. I have some disk space usage that I can't find as well. In df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 144183992 136857180 2652 100% / udev 2013316 4 2013312 1% /dev tmpfs 808848 876 807972 1% /run none 5120 0 5120 0% /run/lock none 2022116 76 2022040 1% /run/shm overflow 1024 0 1024 0% /tmp I checked the inodes, I checked lsof for +L1 or deleted files, I rebooted, I checked for files hidden behind mounts but none of them were the issue. It grows periodically and I'm running out of things to delete to feed the beast. It's all in the home directory of the only user I have. In du in ~ du -h --max-depth=1 192K ./.nv 2.1M ./.gconf 12K ./Pictures 1.6M ./.launchpadlib 12K ./Public 24K ./.TemporaryItems 8.9M ./.cache 12K ./Network Trash Folder 28K ./.vnc 11M ./.AppleDB 48K ./.subversion 1.9G ./.xbmc 8.0K ./.AppleDesktop 12K ./.dbus 81M ./.mozilla 12K ./Music 160K ./.gnome2 44K ./Downloads 692K ./.zsh 236K ./.AppleDouble 64K ./.pulse 4.0K ./.gvfs 1.4M ./.adobe 44K ./.pki 44K ./.compiz-1 168K ./.config 1.4M ./.thumbnails 12K ./Templates 912K ./.gstreamer-0.10 8.0K ./.emacs.d 92K ./Desktop 1.3M ./.local 12K ./Ubuntu One 12K ./Documents 296K ./.fontconfig 12K ./.qt 12K ./.gnome2_private 20K ./.ssh 20K ./.mission-control 12K ./Videos 12K ./Temporary Items 640K ./.macromedia 124G . I can't find a way to figure out how it got to that 124G in that directory. There are no mount points in home.

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  • Creating mdraid device on top of other existing mdraid devices

    - by Dmitriusan
    I'm considering creating something like "hierarchical raid" and wondering whether it is possible using pure mdraid. Moreover, I'm going to boot from this device. I'm using Ubuntu Server 12.04 LTS with Grub2 bootloader. Motivation behind doing that is: I have 4 x 1tb 7200rpm disks. Two are newer and faster (up to 200mb/sec) and other two are slower (up to 140mb/sec). I want to create RAID-0 device from them. When creating such RAID-0 directly from 4 hard disks, I get summary speed up to ~480mb/sec. That is roughly 4*120mb/sec, so RAID-0 works with speed of the slowest device. I have an idea to create a separate RAID-0 md0 device from 500gb partitions of slower hard disks. Theoretically, this md0 device will have speed 2*140=240~280mb/sec. After that, I'm going to add this md0 device to RAID-0 with faster disks, finishing with up to 3*200=600mb/sec. Stripe-width for this raid will be 2x times bigger than for underlying raid with slow disks. Questions are: is it possible or I'm missing something? will that work as expected? can I boot from such consolidated raid device? any better ideas? any pitfalls? I don't want to use fakeraid for consolidating slow disks for multiple reasons (portability, ability to customize parameters and so on). PS Speed is needed for home virtualization server and just for experience/fun. Reliability is provided via regular automatic backups to a separate device. PPS I considered also using different stripe-width for hard disks with different speed in single raid, but mdraid does not seem to support that.

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  • MySQL permission errors

    - by dotancohen
    It seems that on a Ubuntu 14.04 machine the user mysql cannot access anything. It is not writing logs nor reading files. Witness: - bruno():mysql$ cat /etc/passwd | grep mysql mysql:x:116:127:MySQL Server,,,:/nonexistent:/bin/false - bruno():mysql$ sudo mysql_install_db Installing MySQL system tables... 140818 18:16:50 [ERROR] Can't read from messagefile '/usr/share/mysql/english/errmsg.sys' 140818 18:16:50 [ERROR] Aborting 140818 18:16:50 [Note] Installation of system tables failed! Examine the logs in /var/lib/mysql for more information. ...boilerplate trimmed... - bruno():mysql$ ls -la /usr/share/mysql/english/errmsg.sys -rw-r--r-- 1 root root 59535 Jul 29 13:40 /usr/share/mysql/english/errmsg.sys - bruno():mysql$ wc -l /usr/share/mysql/english/errmsg.sys 16 /usr/share/mysql/english/errmsg.sys Here we have seen that mysql cannot read /usr/share/mysql/english/errmsg.sys even though the permissions are open to read it, and in fact the regular login user can read the file (with wc). Additionally, MySQL is not writing any logs: - bruno():mysql$ ls -la /var/log/mysql total 8 drwxr-s--- 2 mysql adm 4096 Aug 18 16:10 . drwxrwxr-x 18 root syslog 4096 Aug 18 16:10 .. What might cause this user to not be able to access anything? What can I do about it?

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