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• Permission / owner issue with pushing to git when editing directly from repo?

  - by Susan

  I have a web interface for deploying scripts from our repo at Github to our live server. The web interface just triggers a bash script with some git commands. If I make changes locally, push to repo, then run the bash script to pull from repo to live it works fine. However, if I make changes directly in the repo (via Github's web interface), I'm running into fast-forward / lock issues. These are the steps I'm taking: Make a change on a file at Github repo Run a bash script (as apache) via web from live server that attempts a git push / pull. Get these problems: PUSH To [email protected]:name/name.git ! [rejected] master - master (non-fast-forward) error: failed to push some refs to '[email protected]:name/name.git' To prevent you from losing history, non-fast-forward updates were rejected Merge the remote changes before pushing again. See the 'Note about fast-forwards' section of 'git push --help' for details. PULL From github.com:name/name branch master - FETCH_HEAD error: unable to unlink old 'includes/footer.inc' (Permission denied) Updating 8f6d922..d1eba9d Updating 8f6d922..d1eba9d SSH in as root, attempt a push / pull and it works fine. Ideas on why would this method not work from apache?

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• Verify client certificate CN in Tomcat(APR)

  - by Petter

  I'm running a tomcat installation with the APR libraries installed (with the OpenSSL HTTPS stack that comes with it). What I'm trying to do is to lock a specific HTTPS connector down to users of a specific certificate. Adding client certificate verification is no issue, but I can't get it to validate against a specific Common name only. I was perhaps a bit naïve and thought the mod_ssl attribute SSLRequire typically used in Apache Httpd would work, but that property is not recognized by the Tomcat implementation. (http://tomcat.apache.org/tomcat-7.0-doc/config/http.html#SSL%20Support points to some mod_ssl docs, but the Tomcat implementation does not seem to cover all aspects of mod_ssl). I can get this to work by using the Java version of the connector instead of APR (losing some performance) and just add a trust store with that one certificate in it. However, using openssl without the SSLRequire expressions, I'm not sure how to do this with Tomcat7 (on Windows if that matters). <Connector protocol="HTTP/1.1" port="443" maxThreads="150" scheme="https" secure="true" SSLEnabled="true" SSLCertificateFile="mycert.pem" SSLCertificateKeyFile="privkey.pem" SSLCACertificateFile="CABundle.pem" SSLVerifyClient="require" SSLProtocol="TLSv1" SSLRequire="(%{SSL_CLIENT_S_DN_CN} eq &quot;host.example.com&quot;)"/> Can you suggest a way to make this work using Tomcat/APR/OpenSSL?

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• How do I disable the firewall on blackberry?

  - by user15660

  I own a Blackberry 9630 tour.(Sprint). The firewall is enabled with a lock sign and grayed out. I'm not able to disable it. Because of this many of my blackberry apps don't work as it gives a message "The application has tried to open a connection that's not allowed by your IT policy". I tried all options and there's nothing to disable. This is a personal blackberry and I don't have an IT policy on it. I did all methods like wiping, formatting/resetting to factory settings acc. to blackberry site by running their reset app from PC etc etc. but nothing works I tried CrackUtil for blackberry and that worked and wiped the blackberry. I restored my bb and started using it just to notice that the firewall is enabled back after a desktop manager connection to PC. I even made sure the policy.bin file on PC is a regular one with no IT policy. How do I get this disabled? I had the same problem on my old blackberry 8330 and crackutil disabled the firewall. but after a few days after a desktop manager update of blackberry OS and other small stuff the firewall got enabled again. Please give me a solutions to disable the firewall on blackberry

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• How to recover the plesk database?

  - by Kau-Boy

  When I try to launch the Plesk administration page of you server I get the following error: ERROR: PleskMainDBException MySQL query failed: MySQL server has gone away The MySQL Server is working well. Although it seems that the plesk database is somehow corrupt and any action on this database results in a restart of the mysql process, so even queries to other databases on the same MySQL server will be lost. If I try to connect to the plesk database using phpMyAdmin, I can only see the number of tables, the database had originally. But I am not able to open the tables listing. As soon as I try it, the mysql process crashes again. Trying to connect to the database using ssh works. I can even run a SELECT statement against any table an get a result. I don't know if it is an plesk error or an error of the psa database or even the MySQL server. Can you give me any tips on how to recover the plesk system. Should I try to repair the Plesk installation before. And if so, how can I do it and will all my settings get lost doing it? EDIT: Trying to dump the database, I get the following error: mysqldump: Got error: 2013: Lost connection to MySQL server during query when using LOCK TABLES

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• Expand disk space on Ubuntu 10.04 (VMWare Guest)

  - by Jason Clawson

  I need to resize the disk space of an ubuntu guest in VMWare Workstation. After using the expand disk utility in vmware workstation, I need to do some linux magic to resize the parition. I have searched and found a lot of posts about resizing it. Unfortunately I don't really understand it all that well. Can anyone help me out with this? df -h gives me: Filesystem Size Used Avail Use% Mounted on /dev/mapper/ubuntu-root 19G 2.6G 16G 15% / none 496M 172K 495M 1% /dev none 500M 0 500M 0% /dev/shm none 500M 64K 500M 1% /var/run none 500M 0 500M 0% /var/lock none 500M 0 500M 0% /lib/init/rw none 19G 2.6G 16G 15% /var/lib/ureadahead/debugfs /dev/sda1 228M 36M 181M 17% /boot lvs says: LV VG Attr LSize Origin Snap% Move Log Copy% Convert root ubuntu -wi-ao 18.88g swap_1 ubuntu -wi-ao 884.00m fdisk -l says: Disk /dev/sda: 21.5 GB, 21474836480 bytes 255 heads, 63 sectors/track, 2610 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00033718 Device Boot Start End Blocks Id System /dev/sda1 * 1 32 248832 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 32 2611 20719617 5 Extended /dev/sda5 32 2611 20719616 8e Linux LVM I really appreciate the help.

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• Mac SMB connections to Windows 2003 server, leaving Open Files

  - by Bruce Garlock

  We have several Mac clients (Both 10.5, and 10.6) mounting a share from a Windows 2003 server. At least once a day, our archivist will go into this share to archive items from it, to the backup server. Most of the time, she has no issues: she copies the folder to the archive server, when it's done, she deletes it from this share. Then, she will come upon one, and it will say she doesn't have permission. When I go into the Open sessions, it will say that a particular user has a READ lock on the file, in Windows 2003. Of course, this person does not have the file open, and the only way we can delete it, is to close the open session on the file. My thoughts: The Mac likes to "sprinkle" Hidden "Resource Forks" on SMB servers, and possibly, when this Mac who last wrote to that share, closes out of the file, and these files still exist. Windows 2003 has a bug, that doesn't properly "release" the OPLOCK on the file? Steve Ballmer just doesn't like Mac's, so he wants to annoy everyone by not releasing file locks :-) What can be done about this? It happens every day, and sometimes several times per day! Many thanks, Bruce

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• Backing up server and multiple clients

  - by inquam

  I'm running a Amahi server. It's basically a Fedora14 x64 installation. I'm looking for a good solution to backup my 200GB system drive on the server to an external USB/eSATA drive every night. I looked into using dd but since other things might be running on the server at the same time it didn't feel quite safe. I would like the backups to be incremental so the following backups after the initial one would be quite fast. The backup should also be bootable or prehaps be able to produce a bootable disk after booting from a CD or something. I would also like the server to be able to do similar backups of my clients running Ubuntu, Windows 7 x64, Windows 7 Starter, OSX Lion, Windows XP and so on. So no applications backing up only shared folders or something like that. My guess is a client daemon would have to exist that would lock the system to allow backup of a Windows system drive that can otherwise be quite cranky. Booting up a CD in a crashed client and connecting to the server restoring the latest backup and being up running is my ideal goal. Is there anything out there that would fit these needs?

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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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• How can I recover my system after running 'mkfs' on the system partition?

  - by Filip Podgórny

  I am not a Linux user, and was doing some homework, I blindly typed sudo mkfs ext3 dev/sda2 (I had Ubuntu as Windows installation). I've done few more things, and turned Ubuntu off to switch on Windows back. No operating system installed - this is the message I'm getting. I plugged my HDD onto another computer and all my files are still there. What should I do to get my windows installation back? df -l (before mkfs) /dev/loop0 29G 2,0G 27G 8% / udev 3,0G 4,0K 3,0G 1% /dev tmpfs 1,2G 900K 1,2G 1% /run none 5,0M 0 5,0M 0% /run/lock none 3,0G 1,3M 3,0G 1% /run/shm /dev/sda3 455G 123G 333G 27% /host /dev/sdb1 1,9G 820M 1,1G 43% /media/PHONE CARD mkfs output (polish, sorry) mke2fs 1.41.14 (22-Dec-2010) Etykieta systemu plików= Typ OS: Linux Rozmiar bloku=1024 (log=0) Rozmiar fragmentu=1024 (log=0) Stride=0 bloków, szerokosc Stripe=0 bloków 25688 i-wezlów, 102400 bloków 5120 bloków (5.00%) zarezerwowanych dla superuzytkownika Pierwszy blok danych=1 Maksymalna liczba bloków systemu plików=67371008 13 grup bloków 8192 bloków w grupie, 8192 fragmentów w grupie 1976 i-wezlów w grupie Kopie zapasowe superbloku zapisane w blokach: 8193, 24577, 40961, 57345, 73729 Zapis tablicy i-wezlów: zakonczono Tworzenie kroniki (4096 bloków): wykonano Zapis superbloków i podsumowania systemu plików: wykonano Ten system plików bedzie automatycznie sprawdzany co kazde 30 montowan lub co 180 dni, zaleznie co nastapi pierwsze. Mozna to zmienic poprzez tune2fs -c lub -i.

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• Is there an SSL equivelent to an ssh agent?

  - by Matthew J Morrison

  Here is my situation: There are a number of developers who all need to have access to be able to install ruby gems and python eggs from a remote source. Currently, we have a server inside our firewall that hosts the gems and eggs. We now want the ability to be able to install things hosted on that server outside of our firewall. Since some of the gems and eggs that we host are proprietary I would like to somewhat lock access to that machine down, as unobtrusively as possible to the developers. My first thought was using something like ssh keys. So, I spent some time looking at SSL mutual authentication. I was able to get everything set up and working correctly, testing with curl, but the unfortunate thing was that I had to pass extra arguments to curl so it knows about the certificate, key and certificate authority. I was wondering if there is anything like the ssh agent that I can set up to provide that information automatically so that I can push the certificates and keys to the developer's machines so the developers don't have to log in or provide keys each time they try to install something. Another thing that I want to avoid is having to modify the 'gem' command and the 'pip' command to provide keys when they make the http connection. Any other suggestions that may solve this problem (not related to ssl mutual auth) are also welcome. EDIT: I've been continuing to research this and I came across stunnel. I think this may be what I'm looking for, any feedback regarding stunnel would also be great!

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• Anyone else experiencing high rates of linux server crashes today?

  - by Bron Gondwana

  Just today, Sat June 30th - starting soon after the start of the day GMT. We've had a handful of blades in different datacentres as managed by different teams all go dark - not responding to pings, screen blank. They're all running Debian Squeeze - with everything from stock kernel to custom 3.2.21 builds. Most are Dell M610 blades, but I've also just lost a Dell R510 and other departments have lost machines from other vendors too. There was also an older IBM x3550 which crashed and which I thought might be unrelated, but now I'm wondering. The one crash which I did get a screen dump from said: [3161000.864001] BUG: spinlock lockup on CPU#1, ntpd/3358 [3161000.864001] lock: ffff88083fc0d740, .magic: dead4ead, .owner: imapd/24737, .owner_cpu: 0 Unfortunately the blades all supposedly had kdump configured, but they died so hard that kdump didn't trigger - and they had console blanking turned on. I've disabled console blanking now, so fingers crossed I'll have more information after the next crash. Just want to know if it's a common thread or "just us". It's really odd that they're different units in different datacentres bought at different times and run by different admins (I run the FastMail.FM ones)... and now even different vendor hardware. Most of the machines which crashed had been up for weeks/months and were running 3.1 or 3.2 series kernels. The most recent crash was a machine which had only been up about 6 hours running 3.2.21.

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• How do I secure Sql Server 2008 R2

  - by Mark Tait

  I have both a dedicated and a VPS (from Fasthosts) virtual server - the web sites/applications I run on these, access Sql Server stored on the same web server. Until now, I have logged onto Sql Server on both the deidicated and VPS server, from Sql Server Management Studio - until I noticed in my server application logs, multiple attempts to logon to Sql Server using the 'sa' username, but failed password. So someone/bot is trying hard (repeatedly every couple of hours, for approx 20 attempts during each instance) to log on... so obviously I have to lock down access to Sql Sever remotely. What I have done is gone into Configuration Manager, and in Sql Server Network Configuration - Protocols for Sql2008 and also in Sql Native Client 10.0 Configuration - Client Protocols - I have diabled Named Pipes, TCP/IP (and VIA by default). I have left Shared Memory enabled. I also disabled in Sql Server Services, the Sql Server Browser. Now the only way I can manage the databases on these servers, is by logging on to them via Remote Desktop. Can anyone confirm if this is the correct way of stopping anyone maliciously logging on to Sql Server? (I'm not a DBA or security expert - and there are hundreds of articles advising all different ways - but I was hoping for the experts here to confirm, or otherwise, if what I've done is correct) Thank you, Mark

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• Completely remove and freshly install MySql on XP?

  - by Corey Ogburn

  I have read this question and have not found it as a solution and I have even attempted much more. I've uninstalled MySql 5.5.18 and deleted: C:\Program Files\MySql C:\Documents and Settings\All Users\Application Data\MySql After uninstalling, I restart the computer. When I reinstall, in the MySql Server Instance Configuration Wizard I leave everything to their defaults except: I add a firewall exception I check Launch MySQL Server Automatically I check Include BIN directory in windows path Enable root access from remote machines (I'll lock that down later, just debugging for now, I have also tried installing without this option to no avail) I've tried Typical and Complete while installing, as well as with and without strict mode. No combination shows a difference. After all this, it cannot Apply Security Settings and I get a 10061 error (it also said error number 2003) and this article didn't help. I've tried everything I can to completely uninstall and successfully reinstall so I can start from scratch. I've uninstalled and reinstalled about a dozen times with minor changes (including turning off the firewall at times), each time deleting the above folders and any proper registry entries with no success. Note by success, applying security settings and a working remote connection. I can connect locally every time, but it's remotely that counts. I have tried to look for exterior problems such as port forwarding in the router and (even though the installer should add it) I do double check the firewall settings, which have always allowed the default port. I'm out of ideas.

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• RAM ok in memtest86+ == RAM ok after wake from sleep?

  - by twon33

  I have a Windows XP (32-bit) system that appears stable in normal operation, but was repeatably freezing (hard lock, no BSOD) a minute or so after waking from S3 sleep. Some Googling against the motherboard model and memory manufacturer suggested that I might need to bump up the memory voltage, so I tried it and it now seems to resume without freezing. However, I don't really trust it and I'd like to validate that it's actually stable, especially after resuming from sleep. I've run Prime95 for a few hours with no issues, and am planning an overnight run of Memtest86+, which I expect to pass because the system has been solid whenever I've run it without putting it to sleep. Does something like Memtest86+ exist that actually invokes S3 sleep during operation? Clearly it would need an operator to wake the computer to resume testing, but I don't think I've ever heard of a memory test tool that can do this. Alternately, am I wasting my time? Should a clean bill of health from Memtest86+ indicate stability regardless of whether sleep is involved, or, conversely, does my original problem indicate that Memtest86+ would have failed eventually with the stock voltage if I'd run it, sleep or not?

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• Clustering filesystem for small files

  - by viraptor

  Hi, I'm looking for a distributed filesystem which I could use for storing lots of small files (<1MB usually). What I want to get is: 2 servers which have the fs mounted themselves and mirror the data locking support (among reachable nodes) some kind of best-effort automatic resynchronisation after one node goes down and comes back again What I mean by the resync is that, I'm ok with both servers doing read/write operations even if they split-brain. I'm also ok if a local process obtains a lock if the other host is not reachable. From the resync I expect only a file-level consistent view after a while - that is - if file x is modified on both nodes during a split-brain, I don't really care which one is available after they join again, as long as it's full file, not one block coming from node1 and another block from node2. Is there a solution like that out there? I see that gluster has some problems with file locks (even in 3.1). I also noticed that OCFS2 will panic if both nodes split-brain. What other filesystem would allow me to do what I want?

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• Trying to connect simple VB6 ADO to SQL Server 2008

  - by Henry

  We have a VB6 App that -for current purposes - is very basic ADO: Dim a New ADODB.Recorset, set some basic properties like Cursor Location and Lock Type, set a Connection String and a .Source like "Select * from CustomerMaster", and .OPEN - nothing fancy here! Yet, on a new SBS installation with SQL Server 2008 across 2 Servers (one for Apps, the other dedicated to SQL!), it dies/hangs/crashes if you try to run such a Query from anything but the SQL Sever box. Initially, we were using the SQLOLEDB.1 driver, which would crash/hang the entire SQL Server after about 4 such queries (built a simple 6 line App just for this purpose). Then switched to the NATIVE SQL driver, which did allow us unlimited, happy queries - until you did the first Change/Update - THEN it would corrupt the SQL Server if you exited and tried to go back in. All this 'corruption' is happening from the 'App Server' of the SBS pair, and I presume that the App Server (also installed in tandem with the SQL server this week) has the latest MDACs, etc. And running it from a 'lowly XP workstation' is (obviously) no better. ANY ideas??? -Henry

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• Enabling mod_wsgi in Apache for a Django app on Gentoo

  - by hobbes3

  I installed Apache, Django, and mod_wsgi on Gentoo using emerge (on Amazon EC2). I know that the mod_wsgi is configured in /etc/apache2/modules.d/70_mod_wsgi.conf: <IfDefine WSGI> LoadModule wsgi_module modules/mod_wsgi.so </IfDefine> # vim: ts=4 filetype=apache So in my /etc/conf.d/apache I added the WSGI module: APACHE2_OPTS="-D DEFAULT_VHOST -D INFO -D SSL -D SSL_DEFAULT_VHOST -D LANGUAGE -D WSGI" But when I try to list the loaded module, mod_wsgi isn't listed. root ~ # apache2 -M | grep wsgi Syntax OK I also know that mod_wsgi isn't loading properly because the Apache configuration file doesn't recognize WSGIScriptAlias. By the way for Django to work I need to include a custom Apache configuration file. Where should I insert the line below? Include "/var/www/localhost/htdocs/mysite/apache/apache_django_wsgi.conf" I currently have that in the httpd.conf file but I feel like that file will get reseted whenever I upgrade Gentoo or related package. EDIT: it seems the mod_wsgi file is located in /usr/lib64/apache2/modules/mod_wsgi.so. Here is my detailed Apache settings: root@ip-99-99-99-99 /usr/portage/eclass # apache2 -V Server version: Apache/2.2.21 (Unix) Server built: Mar 7 2012 06:52:30 Server's Module Magic Number: 20051115:30 Server loaded: APR 1.4.5, APR-Util 1.3.12 Compiled using: APR 1.4.5, APR-Util 1.3.12 Architecture: 64-bit Server MPM: Prefork threaded: no forked: yes (variable process count) Server compiled with.... -D APACHE_MPM_DIR="server/mpm/prefork" -D APR_HAS_SENDFILE -D APR_HAS_MMAP -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled) -D APR_USE_SYSVSEM_SERIALIZE -D APR_USE_PTHREAD_SERIALIZE -D APR_HAS_OTHER_CHILD -D AP_HAVE_RELIABLE_PIPED_LOGS -D DYNAMIC_MODULE_LIMIT=128 -D HTTPD_ROOT="/usr" -D SUEXEC_BIN="/usr/sbin/suexec" -D DEFAULT_PIDLOG="/var/run/httpd.pid" -D DEFAULT_SCOREBOARD="logs/apache_runtime_status" -D DEFAULT_LOCKFILE="/var/run/accept.lock" -D DEFAULT_ERRORLOG="logs/error_log" -D AP_TYPES_CONFIG_FILE="/etc/apache2/mime.types" -D SERVER_CONFIG_FILE="/etc/apache2/httpd.conf"

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• Where is '/host' declared for mount in Wubi (Ubuntu 9.10)?

  - by Pedro

  Hi! I'm using Wubi (ubuntu 9.10), and I couldn't find where '/host' mountpoint is declared for mounting. There's no entry in fstab, but it's listed in /proc/mount and mounted at boot time. Any ideas? pedroel@ubuntu:~$ cat /proc/mounts rootfs / rootfs rw 0 0 none /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 none /proc proc rw,nosuid,nodev,noexec,relatime 0 0 udev /dev tmpfs rw,relatime,mode=755 0 0 /dev/sda1 /host fuseblk rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other,blksize=4096 0 0 /dev/loop0 / ext4 rw,relatime,errors=remount-ro,barrier=1,data=ordered 0 0 none /sys/kernel/security securityfs rw,relatime 0 0 none /sys/fs/fuse/connections fusectl rw,relatime 0 0 none /sys/kernel/debug debugfs rw,relatime 0 0 none /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0 none /dev/shm tmpfs rw,nosuid,nodev,relatime 0 0 none /var/run tmpfs rw,nosuid,relatime,mode=755 0 0 none /var/lock tmpfs rw,nosuid,nodev,noexec,relatime 0 0 none /lib/init/rw tmpfs rw,nosuid,relatime,mode=755 0 0 /dev/loop1 /home/pedroel/Downloads ext4 rw,relatime,errors=remount-ro,barrier=1,data=ordered 0 0 binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,nosuid,nodev,noexec,relatime 0 0 gvfs-fuse-daemon /home/pedroel/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev,relatime,user_id=1000,group_id=1000 0 0 /dev/mapper/isw_efhafcifi_RAID_Volume01 /media/RAID_D fuseblk rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096 0 0 pedroel@ubuntu:~$ cat /etc/fstab # /etc/fstab: static file system information. # # Use 'blkid -o value -s UUID' to print the universally unique identifier # for a device; this may be used with UUID= as a more robust way to name # devices that works even if disks are added and removed. See fstab(5). # # proc /proc proc defaults 0 0 /host/ubuntu/disks/root.disk / ext4 loop,errors=remount-ro 0 1 /host/ubuntu/disks/pedro.disk /home/pedroel/Downloads ext4 loop,errors=remount-ro 0 1 /host/ubuntu/disks/swap.disk none swap loop,sw 0 0 /dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0 Thanks in advance, Pedro

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• Access to File being restricted after Ubuntu crashed

  - by Tim

  My Ubuntu 8.10 crashed due to the overheating problem of the CPU when I am opening some directory and intend to do some file transfer under Nautilus. After reboot, under gnome, all the files cannot be removed, their properties cannot be viewed and they can only be opened, although all are still fine under terminal. I was wondering why is that and how can I fix it? Thanks and regards UPdate $ cat /etc/mtab /dev/sda7 / ext3 rw,relatime,errors=remount-ro 0 0 tmpfs /lib/init/rw tmpfs rw,nosuid,mode=0755 0 0 /proc /proc proc rw,noexec,nosuid,nodev 0 0 sysfs /sys sysfs rw,noexec,nosuid,nodev 0 0 varrun /var/run tmpfs rw,nosuid,mode=0755 0 0 varlock /var/lock tmpfs rw,noexec,nosuid,nodev,mode=1777 0 0 udev /dev tmpfs rw,mode=0755 0 0 tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0 devpts /dev/pts devpts rw,noexec,nosuid,gid=5,mode=620 0 0 fusectl /sys/fs/fuse/connections fusectl rw 0 0 lrm /lib/modules/2.6.27-15-generic/volatile tmpfs rw,mode=755 0 0 /dev/sda8 /home ext3 rw,relatime 0 0 /dev/sda2 /windows-c vfat rw,utf8,umask=007,gid=46 0 0 /dev/sda5 /windows-d fuseblk rw,allow_other,blksize=4096 0 0 securityfs /sys/kernel/security securityfs rw 0 0 binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,noexec,nosuid,nodev 0 0 gvfs-fuse-daemon /home/tim/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev,user=tim 0 0

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• Extremely high mysqld CPU usage with no active queries

  - by RadarNyan

  I have a VPS running Ubuntu 12.04 LTS with LEMP stack, followed the guide from Linode Library (since I'm using a Linode) to setup, and everything worked fine until now. I don't know what's wrong, but my CPU usage just goes up since a week ago. Today things getting really bad - I got 74% CPU usage so I went check and found that mysqld taking too much CPU usage (somewhere around 30% ~ 80%) So I did some Google Search, tried disable InnoDB, restart mysql, reset ntp / system clock (Isn't this bug supposed to happen more than a year ago?!) and reboot my VPS, nothing helped. Even with mysql processlist empty, I still get mysqld CPU usage very high. I don't know what I missed and have totally no idea, any advice would be appreciated. Thanks in advance. Update: I got these from running "strace mysqld" write(2, "InnoDB: Unable to lock ./ibdata1"..., 44) = 44 write(2, "InnoDB: Check that you do not al"..., 115) = 115 select(0, NULL, NULL, NULL, {1, 0}^[[A^[[A) = 0 (Timeout) fcntl64(3, F_SETLK64, {type=F_WRLCK, whence=SEEK_SET, start=0, len=0}, 0xbfa496f8) = -1 EAGAIN (Resource temporarily unavailable) hum... I did tried to disable InnoDB and it didn't fix this problem. Any idea? Update2: # ps -e | grep mysqld 13099 ? 00:00:20 mysqld then use "strace -p 13099", the following lines appears repeatedly: fcntl64(12, F_GETFL) = 0x2 (flags O_RDWR) fcntl64(12, F_SETFL, O_RDWR|O_NONBLOCK) = 0 accept(12, {sa_family=AF_FILE, NULL}, [2]) = 14 fcntl64(12, F_SETFL, O_RDWR) = 0 getsockname(14, {sa_family=AF_FILE, path="/var/run/mysqld/mysqld.sock"}, [30]) = 0 fcntl64(14, F_SETFL, O_RDONLY) = 0 fcntl64(14, F_GETFL) = 0x2 (flags O_RDWR) setsockopt(14, SOL_SOCKET, SO_RCVTIMEO, "\36\0\0\0\0\0\0\0", 8) = 0 setsockopt(14, SOL_SOCKET, SO_SNDTIMEO, "<\0\0\0\0\0\0\0", 8) = 0 fcntl64(14, F_SETFL, O_RDWR|O_NONBLOCK) = 0 setsockopt(14, SOL_IP, IP_TOS, [8], 4) = -1 EOPNOTSUPP (Operation not supported) futex(0xb786a584, FUTEX_WAKE_OP_PRIVATE, 1, 1, 0xb786a580, {FUTEX_OP_SET, 0, FUTEX_OP_CMP_GT, 1}) = 1 futex(0xb7869998, FUTEX_WAKE_PRIVATE, 1) = 1 poll([{fd=10, events=POLLIN}, {fd=12, events=POLLIN}], 2, -1) = 1 ([{fd=12, revents=POLLIN}]) er... now I totally don't get it x_x help

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• mysqld refusing connections from localhost

  - by Dennis Rardin

  My mail server (Ubuntu 10.04) uses mysql for virtual domains, virtual users. For some reason, mysqld has started refusing connections from localhost. I see these in the mail server log: Oct 6 00:31:14 apollo postfix/trivial-rewrite[16888]: fatal: proxy:mysql:/etc/postfix/mysql-virtual_domains.cf(0,lock|fold_fix): table lookup problem and: Oct 7 13:39:15 apollo postfix/proxymap[25839]: warning: connect to mysql server 127.0.0.1: Lost connection to MySQL server at 'reading initial communication packet', system error: 0 I also get the following in auth.log: Oct 6 22:33:31 apollo mysqld[31775]: refused connect from 127.0.0.1 Telnet to the local port: root@apollo:/var/log/mysql# telnet localhost 3306 Trying ::1... Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. Connection closed by foreign host. root@apollo:/var/log/mysql# I am not sure why this started happening, but there was a disk failure in a RAID 1 pair a bit earlier that day. So it's possible I have a damaged config file or something. But mail was working for at least an hour after the drive event, so who knows for sure? phpmyadmin works fine, and the databases themselves look like they're intact. I think/believe that selinux and iptables are disabled and not running. So ... why is mysqld refusing connections from localhost? What should I check? What processes might cause this if a .conf file or possibly a binary was damaged? Which other log files might contain clues? I've enabled "general logging" in /etc/mysql/my.cnf, but I get no interesting or informative entries there. Thanks, m00tpoint

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• Computer Freezes with "Bugcheck 0" on Windows 7. How do I figure out why?

  - by George Stocker

  After about 10 minutes of running, my computer will hang, exhibiting the following symptoms: Both monitors act as if there is no image being sent to them (on, but blacked out) The CAPS Lock key on the keyboard will not respond. The computer appears to still be running: CPU Fan is whirring. When I reboot, Windows says "The previous shutdown was unexpected." I've enabled the 'don't automatically restart' on an error, and asked the computer to make a memory dump whenever it crashes, but it hasn't done either. The problem is that there's no bugcheck for me to go off of, so there's no way for me to determine what the cause is (I think). Here are my system specs: Intel Core 2 Duo E6750 Gigabyte P35C-DS3R w/ 4.00 GB (DDR2 Ram) Nvidia 8800 GT Windows 7 I've tried running the Windows Memory checker, but the system also freezes when using that after about 10 minutes as well. How can I diagnose the problem with no bugcheck and no ability to run a memory checker? Update Running Memtest86 also causes the computer to crash (looks like it doesn't make it through a full pass - it was only running for about 10 minutes when the PC stopped responding).

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• How can I pause console output in rxvt?

  - by Javid Jamae

  I'm running rxvt in Cygwin on a Windows box. This is how I invoke it: rxvt -sr -sl 2500 -sb -geometry 90x30 -tn rxvt -fn "Lucida Console-14" -e /usr/bin/bash --login -i Anyone know how to pause the console output in rxvt? I can use Ctrl-S / Ctrl-Q to pause / un-pause, but this won't work if a script is already running and spewing output to stdout. Highlighting the terminal window with the mouse doesn't seem to work like with other consoles such as the standard Cygwin console, or the Windows command prompt console. Some sort of scroll lock would be nice, but I can't seem to find any way to do this. I know I could just pipe my output to a file, but I want a way to pause the output for something that I didn't expect to explode with console output. Basically I want to scroll back while its running without it constantly moving me to the bottom of the output buffer as it updates more data to stdout. I don't particularly care if the solution given actually pauses the script (like when you highlight the mouse in the Windows Command window), or just scroll locks and let's me scroll while its still running the underlying script, though I'd like to know how to do both if its possible.

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• How to re-add a RAID-10 failed drive on Ubuntu?

  - by thiesdiggity

  I have a problem that I can't seem to solve. We have a Ubuntu server setup with RAID-10 and two of the drives dropped out of the array. When I try to re-add them using the following command: mdadm --manage --re-add /dev/md2 /dev/sdc1 I get the following error message: mdadm: Cannot open /dev/sdc1: Device or resource busy When I do a "cat /proc/mdstat" I get the following: Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [r$ md2 : active raid10 sdb1[0] sdd1[3] 1953519872 blocks 64K chunks 2 near-copies [4/2] [U__U] md1 : active raid1 sda2[0] sdc2[1] 468853696 blocks [2/2] [UU] md0 : active raid1 sda1[0] sdc1[1] 19530688 blocks [2/2] [UU] unused devices: <none> When I run "/sbin/mdadm --detail /dev/md2" I get the following: /dev/md2: Version : 00.90 Creation Time : Mon Sep 5 23:41:13 2011 Raid Level : raid10 Array Size : 1953519872 (1863.02 GiB 2000.40 GB) Used Dev Size : 976759936 (931.51 GiB 1000.20 GB) Raid Devices : 4 Total Devices : 2 Preferred Minor : 2 Persistence : Superblock is persistent Update Time : Thu Oct 25 09:25:08 2012 State : active, degraded Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Layout : near=2, far=1 Chunk Size : 64K UUID : c6d87d27:aeefcb2e:d4453e2e:0b7266cb Events : 0.6688691 Number Major Minor RaidDevice State 0 8 17 0 active sync /dev/sdb1 1 0 0 1 removed 2 0 0 2 removed 3 8 49 3 active sync /dev/sdd1 Output of df -h is: Filesystem Size Used Avail Use% Mounted on /dev/md1 441G 2.0G 416G 1% / none 32G 236K 32G 1% /dev tmpfs 32G 0 32G 0% /dev/shm none 32G 112K 32G 1% /var/run none 32G 0 32G 0% /var/lock none 32G 0 32G 0% /lib/init/rw tmpfs 64G 215M 63G 1% /mnt/vmware none 441G 2.0G 416G 1% /var/lib/ureadahead/debugfs /dev/mapper/RAID10VG-RAID10LV 1.8T 139G 1.6T 8% /mnt/RAID10 When I do a "fdisk -l" I can see all the drives needed for the RAID-10. The RAID-10 is part of the /dev/mapper, could that be the reason why the device is coming back as busy? Anyone have any suggestions on what I can try to get the drives back into the array? Any help would be greatly appreciated. Thanks!

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• nfs mount with nfs 3

  - by rahrahruby

  I am running CentOS 6.4 Kernel version 2.6.32-358.23.2.el6.x86_64 #1 SMP and have the following nfs info: nfs-utils-lib-1.1.5-6.el6.x86_64 nfs4-acl-tools-0.3.3-6.el6.x86_64 nfs-utils-1.2.3-36.el6.x86_64 and am trying to mount an nfs volume with nfs3. I have the following line in my fstab: 172.16.11.87:/volume1/web /home/nas nfsver=3 rsize=8192,wsize=8192,timeo=14,intr(no_root_squach) When I run nfsstat it still shows the client as nfs4 Server rpc stats: calls badcalls badauth badclnt xdrcall 0 0 0 0 0 Client rpc stats: calls retrans authrefrsh 1988817 6 1988818 Client nfs v4: null read write commit open open_conf 0 0% 36943 1% 21606 1% 401 0% 392369 19% 375986 18% open_noat open_dgrd close setattr fsinfo renew 0 0% 0 0% 387945 19% 22904 1% 3 0% 2914 0% setclntid confirm lock lockt locku access 1 0% 1 0% 0 0% 0 0% 0 0% 97856 4% getattr lookup lookup_root remove rename link 613996 30% 29888 1% 1 0% 1248 0% 253 0% 414 0% symlink create pathconf statfs readlink readdir 26 0% 226 0% 2 0% 3 0% 0 0% 3825 0% server_caps delegreturn getacl setacl fs_locations rel_lkowner 5 0% 0 0% 0 0% 0 0% 0 0% 0 0% exchange_id create_ses destroy_ses sequence get_lease_t reclaim_comp 0 0% 0 0% 0 0% 0 0% 0 0% 0 0% layoutget layoutcommit layoutreturn getdevlist getdevinfo ds_write 0 0% 0 0% 0 0% 0 0% 0 0% 0 0% ds_commit 0 0%

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