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  • MariaDB doesn't upgrade, 2 versions are installed

    - by zahorak
    I have a server running on Debian wheezy with MaraiDB and OwnCloud. Few days ago, I wanted to update the packages because of the OwnCloud updates but something went wrong. Usually in this case I'd probably try to remove and again install the problematic packages, but on a server which is used by different people it doesn't seem like a valid solution anymore. Here you can see my console output: user@server:~$ sudo apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies: libmariadbclient18 : Depends: libmysqlclient18 (= 10.0.4+maria-1~wheezy) but 10.0.5+maria-1~wheezy is installed libmysqlclient18 : Depends: libmariadbclient18 (= 10.0.5+maria-1~wheezy) but 10.0.4+maria-1~wheezy is installed mariadb-client-10.0 : Depends: libmariadbclient18 (>= 10.0.5+maria-1~wheezy) but 10.0.4+maria-1~wheezy is installed mariadb-client-core-10.0 : Depends: libmariadbclient18 (>= 10.0.5+maria-1~wheezy) but 10.0.4+maria-1~wheezy is installed mariadb-server : Depends: mariadb-server-10.0 (= 10.0.5+maria-1~wheezy) but 10.0.4+maria-1~wheezy is installed mariadb-server-core-10.0 : Depends: libmariadbclient18 (>= 10.0.5+maria-1~wheezy) but 10.0.4+maria-1~wheezy is installed E: Unmet dependencies. Try using -f. user@server:~$ sudo apt-get upgrade -f Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages will be upgraded: libmariadbclient18 mariadb-server-10.0 owncloud 3 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 7 not fully installed or removed. Need to get 0 B/37.2 MB of archives. After this operation, 3,565 kB of additional disk space will be used. Do you want to continue [Y/n]? Y Preconfiguring packages ... (Reading database ... 35901 files and directories currently installed.) Preparing to replace libmariadbclient18 10.0.4+maria-1~wheezy (using .../libmariadbclient18_10.0.5+maria-1~wheezy_amd64.deb) ... Unpacking replacement libmariadbclient18 ... dpkg: error processing /var/cache/apt/archives/libmariadbclient18_10.0.5+maria-1~wheezy_amd64.deb (--unpack): trying to overwrite '/usr/lib/mysql/plugin/dialog.so', which is also in package mariadb-server-10.0 10.0.4+maria-1~wheezy Errors were encountered while processing: /var/cache/apt/archives/libmariadbclient18_10.0.5+maria-1~wheezy_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) I tried removing the 10.0.4 package version of libmariadbclient18 but I wasn't really successful in doing that. So my last hope is here, do you have any ideas how exactly I could fix this issue? Thx very much

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  • Sniff UNIX domain socket

    - by gonvaled
    I know that some process is writing to a certain unix domain socket (/var/run/asterisk/asterisk.ctl), but I do not known the pid of the sender. How can I find out who is writing to the socket? I have tried with: sudo lsof /var/run/asterisk/asterisk.ctl but it just list the owner of the socket. I would like to know who is writing / reading to this socket, and I would also like to sniff the data. Is this possible?

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  • Probelm After Changing password in ubuntu

    - by Narendra
    Hi All, I am using ubuntu system which uses openldap for user login authentication. For changing my login password i used "$sudo passwd" and changed it. (of course the password given is same as old one). Then onwards when i trying to run "apt" command it showing command not found. and for some other programs it showing segmentation fault. Can any one tell me why I am facing issue and how to solve this.

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  • Linux scp command issue

    - by George2
    Hello everyone, I am using scp command to copy file from a MacBook Pro OS X 10.5 to another Linux box (Red Hat Linux Enterprise 5). I am using the following command on Mac, sudo scp ~/.ssh/mykey.rsa [email protected], there is no output from Mac command line. I am not sure whether the scp is success or not. Where is the location the file mykey.rsa on remote computer 10.10.100.101? thanks in advance, George

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  • Postfix not delivering email using Maildir

    - by Greg K
    I've followed this guide to get postfix set up. I've not completed it yet, as from sending test emails, email is no longer being delivered since switching to Maildir from mbox. I have created a Maildir directory with cur, new and tmp sub directories. ~$ ll drwxrwxr-x 5 greg greg 4096 2012-07-07 16:40 Maildir/ ~$ ll Maildir/ drwxrwxr-x 2 greg greg 4096 2012-07-07 16:40 cur drwxrwxr-x 2 greg greg 4096 2012-07-07 16:40 new drwxrwxr-x 2 greg greg 4096 2012-07-07 16:40 tmp Send a test email. ~$ netcat mail.example.com 25 220 ubuntu ESMTP Postfix (Ubuntu) ehlo example.com 250-ubuntu 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN mail from: [email protected] 250 2.1.0 Ok rcpt to: [email protected] 250 2.1.5 Ok data 354 End data with <CR><LF>.<CR><LF> Subject: test email Hi, Just testing. . 250 2.0.0 Ok: queued as 56B541EA53 quit 221 2.0.0 Bye Check the mail queue. ~$ mailq Mail queue is empty Check if mail has been delivered. ~$ ls -l Maildir/new total 0 Some postfix settings: ~$ sudo postconf home_mailbox home_mailbox = Maildir/ ~$ sudo postconf mailbox_command mailbox_command = /var/log/mail.log Jul 7 16:57:33 li305-246 postfix/smtpd[21039]: connect from example.com[178.79.168.xxx] Jul 7 16:58:14 li305-246 postfix/smtpd[21039]: 56B541EA53: client=example.com[178.79.168.xxx] Jul 7 16:58:33 li305-246 postfix/cleanup[21042]: 56B541EA53: message-id=<20120707155814.56B541EA53@ubuntu> Jul 7 16:58:33 li305-246 postfix/qmgr[20882]: 56B541EA53: from=<[email protected]>, size=321, nrcpt=1 (queue active) Jul 7 16:58:33 li305-246 postfix/smtp[21043]: 56B541EA53: to=<[email protected]>, relay=none, delay=30, delays=30/0.01/0/0, dsn=5.4.6, status=bounced (mail for example.com loops back to myself) Jul 7 16:58:33 li305-246 postfix/cleanup[21042]: 1F68B1EA55: message-id=<20120707155833.1F68B1EA55@ubuntu> Jul 7 16:58:33 li305-246 postfix/bounce[21044]: 56B541EA53: sender non-delivery notification: 1F68B1EA55 Jul 7 16:58:33 li305-246 postfix/qmgr[20882]: 1F68B1EA55: from=<>, size=1999, nrcpt=1 (queue active) Jul 7 16:58:33 li305-246 postfix/qmgr[20882]: 56B541EA53: removed Jul 7 16:58:33 li305-246 postfix/smtp[21043]: 1F68B1EA55: to=<[email protected]>, relay=none, delay=0, delays=0/0/0/0, dsn=5.4.6, status=bounced (mail for example.com loops back to myself) Jul 7 16:58:33 li305-246 postfix/qmgr[20882]: 1F68B1EA55: removed Jul 7 16:58:36 li305-246 postfix/smtpd[21039]: disconnect from domain.me[178.79.168.xxx] Jul 7 17:10:38 li305-246 postfix/master[20878]: terminating on signal 15 Jul 7 17:10:39 li305-246 postfix/master[21254]: daemon started -- version 2.8.5, configuration /etc/postfix Any ideas?

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  • Where is xorg.conf in Ubuntu 10.04?

    - by Mikey.B
    Hi Guys, I'm in the middle of trying to setup dual monitors on ubuntu and would like to backup my xorg.conf... The documentation I've been thus far say to do the following: sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf_backup But I don't see the xorg.conf file anywhere... Am I missing something? Where is this located?

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  • Why would sshd allow root logins by default?

    - by The Journeyman geek
    I'm currently working on hardening my servers against hacking- amongst other things, i'm getting a load of attempts to log on as root over ssh. While i've implemented fail2ban, i'm wondering, why root logons would be allowed by default to start with? Even with non sudo based distros, i can always log on as a normal user and switch - so i'm wondering is there any clear advantage to allowing root logons on ssh, or it just something no one bothers to change?

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  • Network is going down once per day

    - by Charly
    Once per day the network on eth0 is going down and we need to do sudo ifdown eth0; sudo ifup eth0 to get the network up. Here is the syslog: Feb 11 12:48:01 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 12:52:35 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 12:56:23 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:00:28 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:04:29 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:09:16 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:13:53 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:18:16 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:22:25 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:26:52 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:30:44 www-tech-1 dhclient: DHCPREQUEST of address> on eth0 to 131.121.113.228 port 67 Feb 11 13:31:49 www-tech-1 dhclient: There is already a pid file /var/run/dhclient.eth0.pid with pid 3198 Feb 11 13:31:49 www-tech-1 dhclient: Listening on LPF/eth0/00:e0:81:49:fc:e0 Feb 11 13:31:49 www-tech-1 dhclient: Sending on LPF/eth0/00:e0:81:49:fc:e0 Feb 11 13:31:49 www-tech-1 dhclient: DHCPRELEASE on eth0 to 131.121.113.228 port 67 Feb 11 13:31:49 www-tech-1 dhclient: There is already a pid file /var/run/dhclient.eth0.pid with pid 134519072 Feb 11 13:31:50 www-tech-1 dhclient: Listening on LPF/eth0/00:e0:81:49:fc:e0 Feb 11 13:31:50 www-tech-1 dhclient: Sending on LPF/eth0/00:e0:81:49:fc:e0 Feb 11 13:31:52 www-tech-1 dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 Feb 11 13:31:52 www-tech-1 dhclient: DHCPREQUEST of 131.121.14.17 on eth0 to 255.255.255.255 port 67 Feb 11 13:31:53 www-tech-1 kernel: [265383.991682] eth0: no IPv6 routers present Please check the last portion of this syslog. Can anybody help me?

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  • Can't get Monit to work

    - by Andrea
    I am trying to configure Monit on my local machine to get a taste at how it works, but I have some issues. What I am trying to do is to get any evidence that Monit is up and running correctly and is actually monitoring something. So my /etc/monit/monitrc looks like set daemon 60 set logfile /var/log/monit.log set idfile /var/lib/monit/id set statefile /var/lib/monit/state set eventqueue basedir /var/lib/monit/events slots 100 set httpd port 2812 and allow username:password check process apache2 with pidfile /usr/local/apache/logs/apache2.pid start program = "/etc/init.d/apache2 start" stop program = "/etc/init.d/apache2 stop" if failed port 6543 protocol http then exec "/usr/bin/touch /tmp/monit" If I understand correctly, since apache does not listen on port 6543 (it is just a random number) I should get an error, and as a consequence the file /tmp/monit should be created. So I start monit by sudo service monit start sudo monit monitor apache2 Unfortunately no such file is created. Instead the web console shows an error for apache - execution failed. The log says 'apache2' failed to start. What am I doing wrong? EDIT As suggested in the comments, I ran monit in verbose mode, by monit -vv monitor apache2 (the exact command suggested in the comments failed). The output is Runtime constants: Control file = /etc/monit/monitrc Log file = /var/log/monit.log Pid file = /var/run/monit.pid Debug = True Log = True Use syslog = False Is Daemon = True Use process engine = True Poll time = 60 seconds with start delay 0 seconds Expect buffer = 256 bytes Event queue = base directory /var/lib/monit/events with 100 slots Mail from = (not defined) Mail subject = (not defined) Mail message = (not defined) Start monit httpd = True httpd bind address = Any/All httpd portnumber = 2812 httpd signature = True Use ssl encryption = False httpd auth. style = Basic Authentication The service list contains the following entries: Process Name = apache2 Pid file = /usr/local/apache/logs/apache2.pid Monitoring mode = active Start program = '/etc/init.d/apache2 start' timeout 30 second(s) Stop program = '/etc/init.d/apache2 stop' timeout 30 second(s) Existence = if does not exist 1 times within 1 cycle(s) then restart else if succeeded 1 times within 1 cycle(s) then alert Pid = if changed 1 times within 1 cycle(s) then alert Ppid = if changed 1 times within 1 cycle(s) then alert Port = if failed localhost:6543 [HTTP via TCP] with timeout 5 seconds 1 times within 1 cycle(s) then exec '/usr/bin/touch /tmp/prova-monit' timeout 0 cycle(s) else if succeeded 1 times within 1 cycle(s) then alert System Name = system_andrea-Vostro-420-Series Monitoring mode = active

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  • Double MySQL Running on Mountain Lion

    - by Norris
    After I've done a full restart, my Apache PHP server doesn't connect to Local MySQL ( connecting via 127.0.0.1 because localhost for some reason fails always ). So I did this today: ? ~ mysqladmin shutdown -u root -p Enter password: ? ~ mysqladmin shutdown -u root -p Enter password: mysqladmin: connect to server at 'localhost' failed error: 'Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)' Check that mysqld is running and that the socket: '/tmp/mysql.sock' exists! Which basically means that I succeeded in shutting down mysql. But as soon as I did - Apache PHP successfully connect to MySQL and my local sites work without a hiccup until the next restart. Here are a few other details: (as you can tell - I've installed MySQL via brew) ? ~ sudo ps aux | grep mysql N 4774 0.0 0.0 2432768 620 s000 S+ 9:53AM 0:00.00 grep mysql N 4772 0.0 2.6 3030168 440688 ?? S 9:51AM 0:00.29 /usr/local/Cellar/mysql/5.6.13/bin/mysqld --basedir=/usr/local/Cellar/mysql/5.6.13 --datadir=/usr/local/var/mysql --plugin-dir=/usr/local/Cellar/mysql/5.6.13/lib/plugin --bind-address=127.0.0.1 --log-error=/usr/local/var/mysql/N.local.err --pid-file=/usr/local/var/mysql/N.local.pid N 4686 0.0 0.0 2433432 1000 ?? S 9:51AM 0:00.01 /bin/sh /usr/local/opt/mysql/bin/mysqld_safe --bind-address=127.0.0.1 N 4362 0.0 2.7 3120276 458728 ?? S 9:47AM 0:00.45 mysqld ? ~ lsof -i | grep mysql mysqld 4362 N 16u IPv6 0x76959e40691f9f93 0t0 TCP *:mysql (LISTEN) This is the weird thing: ? ~ killall -9 mysqld MySQL Is dead! Apache doesn't connect. Then, when I run: ? ~ sudo mysqladmin shutdown -u root -p Enter password: Apache is (again) able to successfully connect to MySQL. As far as I understand this means that I have two mysql servers setup and both of them are trying to start up at the same time, but I don't have the slightest idea on how to fix it. I've tried brew reinstalling but that didn't help. ? ~ which mysqladmin /usr/local/bin/mysqladmin ? ~ whence -p mysql /usr/local/bin/mysql

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  • Adduser not working on kde ubuntu

    - by c0mrade
    When I use adduser or useradd from console to add users I can't login when using KDE, how do I add the to be able to use KDE as well, for now I have KDE access with only one user which I used to install kubuntu with sudo. What can I do so that users can login in KDE?

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  • OS X stealth mode: where is it enacted?

    - by er4z0r
    I am working through the security guide from apple (which they did not update since Snow Leopard). In the firewall section it states that ipfw has a default allow rule: 65535 allow ip from any to any And if you enable the firewalls 'stealth mode' via the settings the following rule should be added: 33300 deny icmp from any to me in icmptypes 8 The funny thing is: I have stealth enabled and I do not see this rule when doing sudo ipfw print Any idea where stealth mode is enforced if not in the ipfw ruleset?

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  • external hard drive is no longer recognized, gives buffer I/O errors

    - by BioGeek
    Hi all, The external hard drive which contains all my photos and where I backed-up all my important documents is no longer recognized. It is a three month old 500GB Iomage Prestige Desktop Hard Drive. When I plug it in, it is recognised as a USB device, because it shows up when I type lsusb, but dmesg gives this error message. [19712.013250] usb 2-2: new high speed USB device using ehci_hcd and address 21 [19712.145347] usb 2-2: configuration #1 chosen from 1 choice [19712.147214] scsi25 : SCSI emulation for USB Mass Storage devices [19712.147514] usb-storage: device found at 21 [19712.147519] usb-storage: waiting for device to settle before scanning [19717.148978] usb-storage: device scan complete [19717.149527] scsi 25:0:0:0: Direct-Access ST350082 0AS PQ: 0 ANSI: 2 CCS [19717.151020] sd 25:0:0:0: Attached scsi generic sg2 type 0 [19717.151685] sd 25:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/465 GiB) [19717.160402] sd 25:0:0:0: [sdb] Write Protect is off [19717.160412] sd 25:0:0:0: [sdb] Mode Sense: 34 00 00 00 [19717.160418] sd 25:0:0:0: [sdb] Assuming drive cache: write through [19717.165685] sd 25:0:0:0: [sdb] Assuming drive cache: write through [19717.165691] sdb: sdb1 [19719.171808] sd 25:0:0:0: [sdb] Assuming drive cache: write through [19719.171818] sd 25:0:0:0: [sdb] Attached SCSI disk [19737.430998] sd 25:0:0:0: [sdb] Unhandled sense code [19737.431007] sd 25:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE [19737.431016] sd 25:0:0:0: [sdb] Sense Key : Medium Error [current] [19737.431027] sd 25:0:0:0: [sdb] Add. Sense: Unrecovered read error [19737.431038] end_request: I/O error, dev sdb, sector 6160463 [19737.431050] Buffer I/O error on device sdb1, logical block 6160400 [19737.431060] Buffer I/O error on device sdb1, logical block 6160401 [19737.431067] Buffer I/O error on device sdb1, logical block 6160402 [19737.431075] Buffer I/O error on device sdb1, logical block 6160403 [19737.431082] Buffer I/O error on device sdb1, logical block 6160404 [19737.431088] Buffer I/O error on device sdb1, logical block 6160405 [19737.431096] Buffer I/O error on device sdb1, logical block 6160406 [19737.431102] Buffer I/O error on device sdb1, logical block 6160407 [19737.431114] Buffer I/O error on device sdb1, logical block 6160408 [19737.431121] Buffer I/O error on device sdb1, logical block 6160409 [19737.712183] sd 6:0:0:0: [sdb] Unhandled sense code [19737.712191] sd 6:0:0:0: [sdb] Result: hostbyte=DID_ERROR driverbyte=DRIVER_SENSE [19737.712200] sd 6:0:0:0: [sdb] Sense Key : Hardware Error [current] [19737.712210] sd 6:0:0:0: [sdb] Add. Sense: No additional sense information [19737.712222] end_request: I/O error, dev sdb, sector 0 [19737.712232] Buffer I/O error on device sdb, logical block 0 Neither does the external drive show when I use fdisk: jeroen@phalacrocorax:~$ sudo fdisk -l [sudo] password for jeroen: Disk /dev/sda: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x000341ad Device Boot Start End Blocks Id System /dev/sda1 * 1 18714 150320173+ 83 Linux /dev/sda2 18715 19457 5968147+ 5 Extended /dev/sda5 18715 19457 5968116 82 Linux swap / Solaris` I popped the disk out of the casing put it on a SATA connect internally and then tried the file recovery programs testdisk/photorec and SpinRite, but both failed because they couldn't recognize the external harddisk. Do I have any other options?

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  • Network devices disabled

    - by Tao
    I've been running the Lucid Lynx alpha since first release and only now, after recently putting my computer into suspend then restarting, has the networking failed completely. Both wireless and ethernet list as disabled with sudo lshw -C network. The wireless adapter is an Atheros AR928X. The ethernet is a Realtek RTL8111/8168B. Any suggestions as to how I might go about fixing this?

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  • Read-only file system RHEL

    - by gthm geeky
    I am using a RHEL 5.5 on my PC. I was playing around with chmod and chown. suddenly my home folder become read-only. all the folders in /home/goutham/, where goutham is username, became read-only. I can delete files after turning on system for few seconds, after that it says Permission denied:read only file system. I cant even create folder with sudo mkdir also. Please help me. My os is on /dev/sda3

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  • Ubuntu 12.10 Clock is wrong

    - by mardavi
    I have an issue with Ubuntu Quantal, as it shows the wrong time. It is completely messy, the right time from time.is now is 09.43 and my clock shows 17.48. I am using ntp service and I already checked the timezone and it is correct. I also checked the hardware clock through sudo hwclock --showsudo dpkg-reconfigure tzdata and this is right too. I also tried sudo dpkg-reconfigure tzdata but with bad luck. What else can I try? As asked, here my /etc/ntp.conf # /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help driftfile /var/lib/ntp/ntp.drift # Enable this if you want statistics to be logged. #statsdir /var/log/ntpstats/ 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 # Specify one or more NTP servers. # Use servers from the NTP Pool Project. Approved by Ubuntu Technical Board # on 2011-02-08 (LP: #104525). See http://www.pool.ntp.org/join.html for # more information. server 0.ubuntu.pool.ntp.org server 1.ubuntu.pool.ntp.org server 2.ubuntu.pool.ntp.org server 3.ubuntu.pool.ntp.org server time.nist.gov # Use Ubuntu's ntp server as a fallback. server ntp.ubuntu.com # Access control configuration; see /usr/share/doc/ntp-doc/html/accopt.html for # details. The web page <http://support.ntp.org/bin/view/Support/AccessRestrictions> # might also be helpful. # # Note that "restrict" applies to both servers and clients, so a configuration # that might be intended to block requests from certain clients could also end # up blocking replies from your own upstream servers. # By default, exchange time with everybody, but don't allow configuration. restrict -4 default kod notrap nomodify nopeer noquery restrict -6 default kod notrap nomodify nopeer noquery # Local users may interrogate the ntp server more closely. restrict 127.0.0.1 restrict ::1 # Clients from this (example!) subnet have unlimited access, but only if # cryptographically authenticated. #restrict 192.168.123.0 mask 255.255.255.0 notrust # If you want to provide time to your local subnet, change the next line. # (Again, the address is an example only.) #broadcast 192.168.123.255 # If you want to listen to time broadcasts on your local subnet, de-comment the # next lines. Please do this only if you trust everybody on the network! #disable auth #broadcastclient In addition, the ntp service was not running when I turned on my laptop today.

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  • Python CGI on Amazon AWS EC2 micro-instance -- a how-to!

    - by user595585
    How can you make an EC2 micro instance serve CGI scripts from lighthttpd? For instance Python CGI? Well, it took half a day, but I have gotten Python cgi running on a free Amazon AWS EC2 micro-instance, using the lighttpd server. I think it will help my fellow noobs to put all the steps in one place. Armed with the simple steps below, it will take you only 15 minutes to set things up! My question for the more experienced users reading this is: Are there any security flaws in what I've done? (See file and directory permissions.) Step 1: Start your EC2 instance and ssh into it. [Obviously, you'll need to sign up for Amazon EC2 and save your key pairs to a *.pem file. I won't go over this, as Amazon tells you how to do it.] Sign into your AWS account and start your EC2 instance. The web has tutorials on doing this. Notice that default instance-size that Amazon presents to you is "small." This is not "micro" and so it will cost you money. Be sure to manually choose "micro." (Micro instances are free only for the first year...) Find the public DNS code for your running instance. To do this, click on the instance in the top pane of the dashboard and you'll eventually see the "Public DNS" field populated in the bottom pane. (You may need to fiddle a bit.) The Public DNS looks something like: ec2-174-129-110-23.compute-1.amazonaws.com Start your Unix console program. (On Max OS X, it's called Terminal, and lives in the Applications - Utilities folder.) cd to the directory on your desktop system that has your *.pem file containing your AWS keypairs. ssh to your EC2 instance using a command like: ssh -i <<your *.pem filename>> ec2-user@<< Public DNS address >> So, for me, this was: ssh -i amzn_ec2_keypair.pem [email protected] Your EC2 instance should let you in. Step 2: Download lighttpd to your EC2 instance. To install lighttpd, you will need root access on your EC2 instance. The problem is: Amazon will not let you sign in as root. (Not straightforwardly, at least.) But there is a workaround. Type this command: sudo /bin/bash The system prompt-character will change from $ to #. We won't exit from "sudo" until the very last step in this whole process. Install the lighttpd application (version 1.4.28-1.3.amzn1 for me): yum install lighttpd Install the FastCGI libraries for lighttpd (not needed, but why not?): yum install lighttpd-fastcgi Test that your server is working: /etc/init.d/lighttpd start Step 3: Let the outside world see your server. If you now tried to hit your server from the browser on your desktop, it would fail. The reason: By default, Amazon AWS does not open any ports to your EC2 instance. So, you have to open the ports manually. Go to your EC2 dashboard in your desktop's browser. Click on "Security Groups" in the left pane. One or more security groups will appear in the upper right pane. Choose the one that was assigned to your EC2 instance when you launched your instance. A table called "Allowed Connections" will appear in the lower right pane. A pop-up menu will let you choose "HTTP" as the connection method. The other values in that line of the table should be: tcp, 80, 80, 0.0.0.0/0 Now hit your EC2 instance's server from the desktop in your browser. Use the Public DNS address that you used earlier to SSH in. You should see the lighttpd generic web page. If you don't, I can't help you because I am such a noob. :-( Step 4: Configure lighttpd to serve CGI. Back in the console program, cd to the configuration directory for lighttpd: cd /etc/lighttpd To enable CGI, you want to uncomment one line in the < modules.conf file. (I could have enabled Fast CGI, but baby steps are best!) You can do this with the "ed" editor as follows: ed modules.conf /include "conf.d\/cgi.conf"/ s/#// w q Create the directory where CGI programs will live. (The /etc/lighttpd/lighttpd.conf file determines where this will be.) We'll create our directory in the default location, so we don't have to do any editing of configuration files: cd /var/www/lighttpd mkdir cgi-bin chmod 755 cgi-bin Almost there! Of course you need to put a test CGI program into the cgi-bin directory. Here is one: cd cgi-bin ed a #!/usr/bin/python print "Content-type: text/html\n\n" print "<html><body>Hello, pyworld.</body></html>" . w hellopyworld.py q chmod 655 hellopyworld.py Restart your lighttpd server: /etc/init.d/lighttpd restart Test your CGI program. In your desktop's browser, hit this URL, substituting your EC2 instance's public DNS address: http://<<Public DNS>>/cgi-bin/hellopyworld.py For me, this was: http://ec2-174-129-110-23.compute-1.amazonaws.com/cgi-bin/hellopyworld.py Step 5: That's it! Clean up, and give thanks! To exit from the "sudo /bin/bash" command given earlier, type: exit Acknowledgements: Heaps of thanks to: wiki.vpslink.com/Install_and_Configure_lighttpd www.cyberciti.biz/tips/lighttpd-howto-setup-cgi-bin-access-for-perl-programs.html aws.typepad.com/aws/2010/06/building-three-tier-architectures-with-security-groups.html Good luck, amigos! I apologize for the non-traditional nature of this "question" but I have gotten so much help from Stackoverflow that I was eager to give something back.

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  • "tasksel: aptitude failed (100)" installing LAMP on Ubuntu (vagrant)

    - by John Mee
    vagrant@precise64:~$ sudo tasksel install lamp-server tasksel: aptitude failed (100) I'm hoping to get a LAMP server from a clean install of ubuntu. All the googles suggest tasksel, which going into a pretty ascii gui, downloads stuff, then dies with this message. I'm guessing I should try doing it via apt-get of the individual packages but seems a fair chance somebody else is going to search for this error message and want the right answer.

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  • Cannot run 'display' after ImageMagick install on Ubuntu

    - by L. Moser
    I'm trying to install ImageMagick to my Ubuntu box. I've run the following command: sudo aptitude install imagemagick Now whenever I try to run 'display' from the command line, I get an error saying display: delegate library support not built-in `' (X11) @ display.c/DisplayImageCommand/1888. I can certainly include more details if asked, but at the moment I'm not sure what else to include. I'm running Ubuntu 9.10.

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  • Change default DNS server in Arch Linux

    - by AntoineG
    I'm in Viet Nam and most social websites (Facebook, Twitter and the likes - even reddit) are blocked by the ISP DNS server. I tried to change the DNS server of my Arch box using the resolv.conf file, but it failed miserably since dhcpd generates this file automatically everytime I connect to the LAN. I've been looking around to try and find out how to fix this, without success. Either I s*ck at Googling, either it is non-trivial to do so. EDIT 1: Meh, apparently posting it here made me feel guilty and I had to push my search a bit more. I found the same article than Ankur post below. This is what I made, if anybody ever faces the same problem: $ sudo gvim /etc/dhcpcd.conf Add "nohook resolv.conf" at the tail of the file. $ sudo gvim /etc/resolv.conf Add to the file (OpenDNS servers): nameserver 208.67.222.222 nameserver 208.67.220.220 Or (Google DNS): nameserver 8.8.8.8 nameserver 8.8.4.4 Then, verify it worked (need package dnsutils): $ dig www.facebook.com ; <<>> DiG 9.9.1-P1 <<>> www.facebook.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16994 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;www.facebook.com. IN A ;; ANSWER SECTION: www.facebook.com. 89 IN A 69.171.224.53 ;; Query time: 87 msec ;; SERVER: 208.67.222.222#53(208.67.222.222) ;; WHEN: Thu Jun 28 00:43:23 2012 ;; MSG SIZE rcvd: 61 See ;; SERVER: 208.67.222.222#53(208.67.222.222), it worked.

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  • Adduser not working on kde ubuntu

    - by c0mrade
    When I use adduser or useradd from console to add users I can't login when using KDE, how do I add the to be able to use KDE as well, for now I have KDE access with only one user which I used to install kubuntu with sudo. What can I do so that users can login in KDE?

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