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  • idle proccesses and high memory bad? uwsgi/django

    - by JimJimThe3rd
    I have a VPS with 256MB of ram. I'm running nginx, uwsgi and postgresql on Ubuntu 12.04 for a soon to be Django site. About 200MB of ram are being used despite the website not being active, the uwsgi processes seem to just be idling. Is this bad? I once heard that having a bunch of free memory isn't necessarily a good metric because it is possible that the memory in use can easily be freed up. I mean, it is possible that the server is storing commonly used "stuff" in case it is accessed but is more than happy to dump it if the ram is needed. But I'm really not sure, hence me asking this question. If it is bad I could set some of the application loading options for uwsgi like "cheap" or "idle" mode. Screenshot of my htop

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  • Help me understand Ubuntu user/group permissions.

    - by Bartek
    I'm beginning to deal with more than one user on my system (it's a VPS serving some sites) and I need to make sure I understand how group permissions work. Here's my setup: I have an account named "admin" .. it's basically the primary account that is used for serving most of the sites that I control myself. Now, I added a second account named "Ville" as one of my users wants to be able to administer that site. So, I can do this the easy way and just chown their domains folder under the ville user and viola, they have permission to do whatever they need be and so forth. However, let's say I want to also give the admin user access to the files (modifying and all) .. how can I put both users into the same group and give them both permission? I've tried doing: sudo usermod -a -G admin ville To add the ville into the admin group, but ville still cannot edit files by admin. Permissions for the primary directory for the ville user are read/write for both owner and group, and the current group for the files is admin:admin .. But ville still can't write into the directory. So, what should I be doing here to get this right and secure at the same time? Thank you.

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  • Tiling window manager where dual heads share common workspace

    - by mikero
    I want to use a tiling window manager with my dual monitor setup, but almost all wms seem to treat each monitor as an independent workspace. This means that I can change the workspace of monitor 0 without affecting the workspace of monitor 1. This is not what I want -- I want a workspace to span both monitors, where each monitor is essentially a separate column for tiling (my monitors are oriented vertically, so they are well-suited as tiling columns). When I switch workspaces, say with Mod-[0-9], I want both monitors to change contents. So far the only wm I have found to support this is wmii, but I'd love to try some other options. Have I missed this capability from other tiling wms?

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  • How do I hook into Tar with BASH?

    - by orb
    Long Story Short I am working with Tar archives that contain PNG images in base64 encoding. I would like to use BASH (or whatever else works) to hook into the extraction function of Tar to decode PNG images from base64 encoding to standard PNG encoding after the files are unpacked. A simple cat $input-file | base64 -d >$output-file will successfully decode the images. Is there a way I can hook into tar -xf so that users do not have to do any (or minimal) extra work to decode the images? In the GNU Tar documentation (http://www.gnu.org/software/tar/manual/html_chapter/Backups.html#SEC97) I found that there are in fact variables reserved to hold the names of functions I desire to be hooked into various moments in Tar program execution. However, the documentation explains that these variables, along with other variables that can be set to configure Tar, are located in a file named backup-specs. Unfortunately, the path to this file is not given. Further, running sudo find / -name backup-specs tells me that this file is not present on my Ubuntu version 13.04 system. Background Information not included in the Long Story Short I have been working on a browser-based (WebGL) particle effect creation application (http://www.particleeffect.org), (https://github.com/cgrabowski/webgl-particle-effect-editor), (https://github.com/cgrabowski/webgl-particle-effect). I have began to write a client-side-only solution for saving and loading effect data as a tar archive. However, since client-side JavaScript has limited capability to process binary data, the images used as textures in the effect are saved with base64 encoding. I have been able to implement saving effect data as a Tar archive (haven't pushed that to Github yet). However, the images present in said Tar archive cannot be manipulated unless they are decoded from base64 encoding.

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  • Empty /var/log after running cron bash script

    - by Ortix92
    I wrote a little bash script and all of a sudden my /var/log folder is completely empty except for the log I created for the bash script. This is the script I'm running every hour with cron: #!/bin/bash STL_DIR=/path/to/some/folder/i/hid LOGFILE=/var/log/stl_upload.log now=`date` echo "----------Start of Transmission----------" 2>&1 | tee -a $LOGFILE echo "Starting transfer at $now" 2>&1 | tee -a $LOGFILE rsync -av -e ssh $STL_DIR [email protected]:/users/path/folder 2>&1 | tee -a $LOGFILE echo "----------End of transmission----------" 2>&1 | tee -a $LOGFILE printf "\n" 2>&1 | tee -a $LOGFILE I want to be clear that I'm not 100% certain this is related to the empty logs folder. So if anyone could give me a pointer as to what could be going on about the reason why my log folder is empty, that'd be great.

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  • How can I make the XAnalogTV xscreensaver fill my screen?

    - by Breakthrough
    I recently installed xscreensaver, as well as the additional/extra screensavers. Many of the OpenGL ones function correctly, going fullscreen as expected. However, for some reason, the XAnalogTV screensaver leaves two "blank" spots on the edges of my screen. If I manually launch XAnalogTV, it displays a window, which it fills correctly. When I maximize the window, the same effect occurs: the window maximizes, but the two edges of the screen are literally "transparent". This effect also occurs when the screensaver is set to fullscreen. For these reasons, I believe the problem may be related to the aspect ratio of the screen. The edges of the screen are literally "ignored", with nothing being drawn there. Specifically, note the transition between the maximized and full-screen screenshots (with the un-drawn whitespace shrinking as the vertical height has been increased). For reference, I am running Xubuntu 12.04 on a Dell Vostro 1520 (Intel P8600, Nvidia 9300M) with a 1440 x 900 display (16:10). I have also set the GetViewPortIsFullOfLies preference to true. Is there any way to force XAnalogTV to fill my entire screen? Alternatively, as I believe the problem is aspect-ratio related, is there any way I can get the screensaver to render larger than my display, and simply discard the extra pixels? Relevant screenshots (windowed, maximized, and full-screen, respectively): You can see in the last two that the scrollbar from Firefox is clearly visible, even though this is a full-screen screensaver.

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  • Sharing a modem INTERNET on LAN

    - by Shadyabhi
    My computer is already connected to a 100Mbps LAN. I can use wvdial to connect to internet using a modem when I have my LAN disconnected. Now, I want to share this modem internet to one of the ip address available on LAN say 10.100.99.56.. First of all, can it be done? How do I go about doing that?

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  • collectd:Monitoring server not showing clients

    - by Quintin Par
    I have setup a monitoring server with the following setup. <Plugin network> Listen "0.0.0.0" "25826" </Plugin> Now my clients are sending data to the monitoring server(verified through tcpdump). Even the collection folder shows that the data is being dumped /var/lib/collectd/rrd [ec2-user at x rrd]$ ll total 4 drwxr-xr-x 11 root root 4096 Nov 20 17:53 x-web-1.y.com [ec2-user at x rrd]$ I have also verified with find . -mmin 1 to see if its being constantly updated. [ec2-user@x rrd]$ find . -mmin 1 ./x-web-1.y.com/interface-eth0/if_errors.rrd ./x-web-1.y.com/interface-eth0/if_packets.rrd ./x-web-1.y.com/interface-eth0/if_octets.rrd ./x-web-1.y.com/disk-xvda1/disk_time.rrd ./x-web-1.y.com/disk-xvda1/disk_ops.rrd ./x-web-1.y.com/disk-xvda1/disk_octets.rrd ./x-web-1.y.com/disk-xvda1/disk_merged.rrd But when i look it up through collectd-web, I don't see the clients What might be wrong in my setup?

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  • Installing GNU scientific library and linking to programme

    - by jack
    I am trying to install a statistical program which requires GNU Scientific Library (GSL). I have successfully installed GSL through the yum command, but my statistical program gives an error when I try to run make install. I think there is a linking problem. How can I solve it? $ sudo yum install gsl.x86_64 Installed: gsl.x86_64 0:1.15-3.fc16 Dependency Installed: atlas.x86_64 0:3.8.4-1.fc16 $ tar -xvzf prog.tgz $ cd prog $ make $ gcc -O3 -Wall -Wshadow -pedantic -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -DVER32 -I/opt/local/include/ -L/opt/local/lib/ -c -o prog.o prog.c In file included from prog.c:16:0: prog.h:7:30: fatal error: gsl/gsl_sf_gamma.h: No such file or directory compilation terminated. make: *** [prog.o] Error 1

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  • Alsa hardware volume with PulseAudio

    - by Jan Hudec
    Before installing pulseaudio, I was able to control volume for the front (meaning on the front panel, the "headphone" jack) and rear (meaning on the back panel, the "line out" jack) separately. When I installed pulseaudio, it became possible to control volume for each playing process separately, but the individual controls for outputs disappeared. While the default device in alsa now routes via pulseaudio, the sysdefault device provides access to the hardware. But kmix does not seem to let me show them now. Is there any way to beat kmix into showing the sysdefault device too? Or something else X-based that would not fight with kmix too much? The system is Debian Jessie (testing) amd64, updated, KDE version 4:4.13.3-1.

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  • Nagios Woudn't Start, now won't Stop!

    - by Bart B
    I ran an update on a CentOS server running Nagios, after the update, Nagios failed to start. The error in the logs was: Failed to obtain lock on file /var/run/nagios.pid: Permission denied So, I checked and there was no pid file for Nagios in /var/run. I created one and gave it the following permissions: -rwxr--r-- 1 nagios nagios 6 May 31 11:58 nagios.pid Nagios then started and seems to be running normally. The only problem is, it refuses to stop now, so I can't re-start it to add new servers and services to be monitored! When I issue the command "service nagios stop", I get [FAILED], but nothing at all gets outputted to the log, and the service remains up. Any ideas on how I can get the service to stop now? I'm running the RPM version which was installed via yum from the RPMForge repositories. The server is CenotOS 5.5.

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  • guest crash on long backup via rsync

    - by ToreTrygg
    I recently upgraded host to Ubuntu 9.10 with vmware server 2.0.2, i had two guest machine. One is a sme server i had several crash during a session of backup with rsync to another pc. Normal activities run regularly. The other guest is up without problem since 25 days. I found in the log a lot o f row like these Dec 20 05:29:27.445: vcpu-1| VLANCE: Ethernet0 skipped 2560 time(s) Dec 20 05:29:27.445: vcpu-1| VLANCE: 66 12 5 8 2 3 3 0 1 0 0 1 0 1 2 0 Dec 20 05:29:27.445: vcpu-1| VLANCE: 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 2452 Dec 20 05:29:27.651: vmx| ide0:0: Command WRITE(10) took 1.947 seconds (ok) Dec 20 05:29:37.945: vmx| ide0:0: Command WRITE(10) took 1.033 seconds (ok) when the vitual machine crash the log report, I paste here only some part to limit the lenght of the message Dec 27 01:48:05.686: Worker#2| Caught signal 6 -- tid 700 Dec 27 01:48:05.686: Worker#2| SIGNAL: eip 0x460422 esp 0xb124c024 ebp 0xb124c03 Dec 27 01:48:05.712: Worker#2| SymBacktrace12 00000000 eip 0x39d7ee in function clone in object /lib/tls/i686/cmov/libc.so.6 loaded at 0x2d1000 Dec 27 01:48:05.719: Worker#2| Unexpected signal: 6. Dec 27 01:48:05.720: Worker#2| Core dump limit is 0 KB. Dec 27 01:48:05.762: Worker#2| Child process 10455 failed to dump core (status 0 x6). Dec 27 01:48:05.762: Worker#2|SymBacktrace13 00000000 eip 0x39d7ee in function clone in object /lib/tls/i686/cmov/libc.so.6 loaded at 0x2d1000 Dec 27 01:48:05.779: Worker#2|Msg_Post: Error Dec 27 01:48:05.780: Worker#2|http://msg.log.error.unrecoverable VMware Server unrecoverable error: (Worker#2) Dec 27 01:48:05.780: Worker#2|Unexpected signal: 6. I have no idea how to solve the problem with this installation, I think to dowgrade the host to a version more compatible with vmware server 2. I read a lot of post about difficult of installation I think the problem of compilation during install could be related to my problem. Excuse me if the post isn't very clear, it's my first post here. Any help or suggest will be appreciated. Thanks

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  • selinux permissive and type targeted

    - by krisdigitx
    i am running centos 6.2 recently i noticed that apache was running with selinux enabled # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=Permissive # SELINUXTYPE= can take one of these two values: # targeted - Targeted processes are protected, # mls - Multi Level Security protection. SELINUXTYPE=targeted i noticed that these errors were coming on dmesg type=1400 audit(1354453732.704:9056368): avc: denied { name_connect } for pid=39006 comm="httpd" dest=11211 scontext=unconfined_u:system_r:httpd_t:s0 tcontext=system_u:object_r:memcache_port_t:s0 tclass=tcp_socket type=1400 audit(1354453735.777:9056369): avc: denied { name_connect } for pid=39046 comm="httpd" dest=6379 scontext=unconfined_u:system_r:httpd_t:s0 tcontext=system_u:object_r:port_t:s0 tclass=tcp_socket i then enabled /usr/sbin/setsebool httpd_can_network_connect=1 and this stopped the errors and also the webpages started to work. My question is if selinux is in permissive mode will selinuxtype=targeted enforce any polices? if not how did it solve the problem with apache as selinux was already in permissive mode?

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  • rm -rf not erasing directory

    - by chief
    I am attempting to erase a directory called apps. When I run rm-rf apps it looks like it erases it for the moment. When I log back on to the server the directory is still there, though it is highlighted in green. drwxrwxrwx 3 user user 4096 2010-04-24 18:33 apps

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  • rm -rf not erasing directory

    - by chief
    I am attempting to erase a directory called apps. When I run rm-rf apps it looks like it erases it for the moment. When I log back on to the server the directory is still there, though it is highlighted in green. drwxrwxrwx 3 user user 4096 2010-04-24 18:33 apps Ubuntu 9.10

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  • PCI scan findings and problems with week ciphers on ports 993,443,995,465

    - by user64991
    From PCI scan results: Synops is : The remote service encrypts traffic using a protocol with known weaknesses . Description : The remote service accepts connections encrypted using SSL 2.0, which reportedly suffers from several cryptographic flaws and has been deprecated for several years. An attacker may be able to exploit these issues to conduct man-in-the-middle attacks or decrypt communications between the affected service and clients . See also : http://www.schneier.com/paper-ssl.pdf Solution: Consult the application's documentation to disable SSL 2.0 and use SSL 3.0 or TLS 1.0 instead. Risk Factor: Medium / CVSS Base Score : 2 (AV:R/AC:L/Au:NR/C:P/A:N/I:N/B:N) I have tried to change SSLProtocol all -SSLv2 to SSLProtocol -ALL +SSLv3 +TLSv1 And SSLCipherSuite ALL:!ADH:!EXPORT:!SSLv2:RC4+RSA:+HIGH:+MEDIUM:+LOW To SSLCipherSuite ALL:!ADH:RC4+RSA:+HIGH:!MEDIUM:!LOW:!SSLv2:!EXPORT But using SSLdigger, it shows the same result. Is this the right way to do something like this?

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  • What can go wrong with a GLIBC upgrade?

    - by Sevenless
    I recently installed a piece of software that my group needs for a research project starting next September. Turns out the software has a known crash bug when used with glibc 2.12.1. My boss asked if we can upgrade glibc on the server that's supposed to run it. Cue my skeptical silence.... At some point, I got it into my brain that messing with glibc was about as good an idea as messing with a hungry puma; however, I've been unable to determine the source of this belief. So, if I go ahead with this: Am I doing something flagrantly stupid (e.g. I won't fix my problem, I will brick my server, or I will initiate a zombie apocalypse)? What can go wrong? What is likely to go wrong? How do I avoid the answers to 2 and 3?

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  • Is this a HPC or HA mySQL cluster?

    - by Louise Hoffman
    Can someone tell me if this is a High Performance Compute or High Available mySQL cluster? There is a picture of the setup. This is part of the config.ini they talk about [ndbd default] NoOfReplicas=2 # Number of replicas Is it correct understood that NoOfReplicas determines if I have a HPC or a HA cluster?

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  • adress-chunk: separate data stored in one collumn - into three (street, postal-code, town)

    - by zero
    hello dear community. Hello dear friends form all over the planet first of all - this is a great great forum. I like this place to share the ideas. It is so great to see such a supportive place - featuring the knowledge exchange! today i have the following thing to discuss: i want to separate the following data that are stored in one column of a calc-spreadsheet: See the following data: You see that there are the following categories:_ steet, postal-code, town All the data are stored in only one Colum; Well to be honest: i want to separate them into three colums steet, postal-code, town see the data: what can i do? note - you see that there are commas inbetween the enties: and besides this we see that we have a postal-code with four digits: that is a good thing. Perhaps we can use this as a marker that helps us to separate the data?! Perhaps See a data-sample! Here you can see some exceptions: eg. the town that has two words combinde with a "-" ... or somethims without any signs and characters... see the following... as an example: Max-Bader-Platz 1, 5620 Schwarzach im Pongau Pestalozzistraße 4, 9990 Nussdorf-Debant Schulstraße 4, 5162 Obertrum am See But i guess that this means no problem... What do you think about this? I am very very interested to get your opinion! i look forward to hear from you! regards see a snipped of the dataset - that is stored in one column -[b]Goal: [/b]i want to separate the datas into three collumns... : Schulweg 6, 9871 Seeboden Khevenhüllerstraße 45, 4861 Schörfling Franz Xaver Rennstr.18, 6460 Imst Schulstraße 4, 5162 Obertrum am See Schulweg 6, 7432 Oberschützen Pestalozzistraße 4, 9990 Nussdorf-Debant Niederndorf bei Kufstein 53c, 6342 Niederndorf bei Kufstein Hauptschulstraße 18, 2183 Neusiedl an der Zaya Seeweg 14, 5202 Neumarkt am Wallersee Europaplatz 1, 8820 Neumarkt in Steiermark Schulstraße 7, 4212 Neumarkt im Mühlkreis Schulstraße 20, 4720 Neumarkt im Hausruckkreis Bahnhofstr. 10, 4872 Neukirchen an der Vöckla Schulstraße 5b, 4780 Schärding Reitbergstraße 2, 4311 Schwertberg Europaplatz 1, 2320 Schwechat Am Schulberg 5, 3931 Schweiggers Waidach 8, 6130 Schwaz Waidach 8, 6130 Schwaz Max-Bader-Platz 1, 5620 Schwarzach im Pongau Markt 29, 2662 Schwarzau im Gebirge Hofsteigstraße 68, 6858 Schwarzach Gmundner Straße 7, 4690 Schwanenstadt Mühlfeldstraße 1, 4690 Schwanenstadt Mainsdorferstraße 18, 8541 Schwanberg Jakob Stemer-Weg 3, 6780 Schruns Obere Umfahrungsstraße 16, 2432 Schwadorf bei Wien Battloggstraße 54, 6780 Schruns Schloss-Straße 19, 5020 Salzburg Schillerplatz 2, 8280 Fürstenfeld Erzherzog-Johann-Str. 400, 8970 Schladming Schulgasse 261, 8811 Scheifling i look forward to hear from you!! regards

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  • Setting background color in gvim

    - by petersohn
    I use a terminal with white text on black background (I just like it better), so I wrote the following line in my .vimrc file: set background=dark However, gvim has black on white text. How do I do either of the following: Set the background of gvim to black Check in .vimrc if I'm using gvim I tried this: I started up gvim, and typed echo &term. The answer was "builtin_gui". So I wrote the following into .vimrc: if &term == "builtin_gui" set background=light else set background=dark endif Somehow, it didn't work.

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  • why i failed to configure openvpn, now i am an ordinary user, how to deal with this issue?

    - by hugemeow
    checking tap-windows.h presence... no checking for tap-windows.h... no checking whether TUNSETPERSIST is declared... yes checking for setcon in -lselinux... yes checking for pam_start in -lpam... no checking for OPENSSL_CRYPTO... yes checking for OPENSSL_SSL... yes checking for EVP_CIPHER_CTX_set_key_length... yes checking for ENGINE_load_builtin_engines... yes checking for ENGINE_register_all_complete... yes checking for ENGINE_cleanup... yes checking for ssl_init in -lpolarssl... no checking for aes_crypt_cbc in -lpolarssl... no checking for lzo1x_1_15_compress in -llzo2... no checking for lzo1x_1_15_compress in -llzo... no checking for PKCS11_HELPER... no checking git checkout... yes configure: error: libpam required but missing [mirror@innov openvpn]$ ./configure --help | grep libpam --enable-pam-dlopen dlopen libpam [default=no] C compiler flags for libpam LIBPAM_LIBS linker flags for libpam [mirror@xxx openvpn]$ ./configure --prefix=/home/mirror/build/ins/ins_vpn --disable-lzo error: libpam required but missing i just have no privilege to install the package named libpam, so can i build libpam and install it in home directory, then build openvpn based on it?

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