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• How to set the default file permissions on ALL newly created files in linux

  - by eviljack

  My question is similar to this: http://stackoverflow.com/questions/228534/linux-default-file-permission but there is no scp/ftp client involved and that question looks abandoned. Simply put: I want to be able to, at some global level decree that all newly created files will never have world writable permissions (0775). I tried putting a umask 02 in /etc/profile then in my bash_profile but it only works for scripts or new files that I create in a shell. It doesn't work for files that another binary creates. Is there anyway to have all new files that are created?

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• Sleep/Suspend and WOL on FreeNAS

  - by Timothy R. Butler

  I am trying to figure out how to get FreeNAS 8 to sleep when inactive and, ideally, wake on lan activity (or, less ideally, wake on a WOL magic packet). However, as I've tried to search for information on how to do this, almost all discussions seem to be centered on FreeNAS 7. Also, the tools included in FreeBSD to do this seem to be missing (i.e. acpiconf, etc.). Is there a way to get FreeNAS 8 to sleep and wake so that I don't have to leave the server running all the time? Given its usage level, it seems a waste to have the server running constantly.

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• Configure Nagios To Alert Depending On Host Group That Service Alert Originates From

  - by StrangeWill

  So my setup: Services are shared between all hosts (CPU/RAM/Disk/Services). Hosts are split into two main groups: "Production" and "Development". We have two contact groups: "Production" and "Development". Lets say my development SQL server runs low on RAM, I want it to only alert those in "Development" contact group (this service is of course assigned to a host in the "Development" host group, using the shared RAM monitoring service). I'm pretty much stumped on this... I can't configure it at the service level (they're shared there), and I can't seem to get escalations to do it for me either... Do I need to use service groups along with escalations and bite the bullet on building that list? Or am I missing something stupidly simple? I'm using Centreon for configuration if that helps.

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• Intermittent login issues to SQL Server

  - by Etienne

  My website is an ASP.NET 2.0 website connecting to a SQL Express Database. Every now and then I get the following error message when I load my site. Login Failed for Username 'MyUsername'. Then on another time I get the following error message. A transport-level error has occurred when receiving results from the server. (provider: TCP Provider, error: 0 - The specified network name is no longer available.) After pressing F5 a few times it will go away. It is very intermittent and it drives me nuts as the company hosting my website cant figure out why this is happening. Then it works then it does not, then it does then it does not! Any idea???

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• ASP.NET Security Exception when Switch IIS7 to Use UNC Path for Content

  - by Jeremy H.

  I have a Windows Server 2008 R2 box running IIS7.5 with Medium Trust configured for ASP.NET. When I have the website running from local content (e.g.: c:\inetpub\wwwroot) everything works fine. When I change IIS to use a UNC path for the content (e.g.: \\computer\wwwroot) I get the following error: Security Exception Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. I'm trying to figure out why ASP.NET/IIS would allow for the SQL call when using local content but not when using a UNC path. Any ideas what I need to do to use a UNC path from IIS7 properly?

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• Saving a modified InfoPath form to its form library

  - by Nathan Lykken

  Within our corporate SharePoint 2007 site, there is a particular form library that contains 10 separate files. 9 of these are either Excel, Word, or PowerPoint files and one of these is an InfoPath 2007 form that serves as a report. After noticing an error within this InfoPath form, I saved this InfoPath form to my local directory and then, within the design mode of InfoPath, I modified this InfoPath form. What is the proper way to save this modified InfoPath form to its form library? Everything that I have tried results in nobody except myself having access to this modified InfoPath form. I can open this InfoPath form without error but when my coworkers try to open this InfoPath form on their machines, they receive this error: “The form cannot be opened because it requires the domain permission level and it currently has restricted permission. To fix this problem, open the form from the location it was published to."

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• Unable to authenticate Windows XP clients agains Snow Leopard Server PDC after 10.6.2 upgrade

  - by Roland

  I have setup a Snow Leopard Server 10.6.1 as a PDC without problems to authenticate Windows XP clients. Joining a Windows XP client to the SLS PDC Domain and log in from a Windows XP client to the SLS PDC Domain are working. After the update to Snow Leopard Server 10.6.2 the authentication is broken. opendirectory_smb_pwd_check_ntlmv1 gave -14090 [eDSAuthFailed] By changing the Windows XP "Network security: LAN Manager authentication level" policy to NTVLM2 responses only the authentication agains a SMB share is possible, but trying to join SLS PDC Domain is still not possible. opendirectory_smb_pwd_check_ntlmv2 gave -14090 [eDSAuthFailed] Any ideas? Is anyone else having similar authentication difficulties?

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• Bluehost: 1 Minute Delays?

  - by feklee

  On Bluehost shared hosting (Apache 2.2 + FastCGI + APC), I have the problem that some requests take almost exactly one minute to respond. Yet time spent in PHP is only two seconds. To demonstrate the issue, I created a temporary test page. Sample output: When asking Bluehost support about the issue, I got the following reply: “the fastcgi process don't stay running they will only stay running for a certan period which would explain the timeouts you are seeing it traffic would spawn new ones. [...]” I understand that spawning new FastCGI processes takes some time. But almost exactly one minute? That must be some timeout. But which timeout may that be? What I want in the end: No request should take longer than five seconds to respond, even if it fails. When I asked Bluehost support to set the Apache TimeOut directive accordingly, they told me: “we do not modify the Apache Config File even on a virtual host level.”

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• Device cannot be added on software-raid-1 array on Ubuntu 12.04

  - by George Pligor

  Unfortunately all tutorials I have found online until now on how to setup software-raid-1 are outdated on ubuntu 12.40 My target is to setup it on a system with a secondary disk drive that is already running. Format is not an option! I am trying to follow and adapt from 11.10 to 12.04 the following tutorial: http://www.howtoforge.com/how-to-set-up-software-raid1-on-a-running-lvm-system-incl-grub2-configuration-ubuntu-11.10-p2 On the above tutorial there is a successful command which creates a raid-1 array by setting the first disk drive with the installed system as missing: mdadm --create /dev/md0 --level=1 --raid-disks=2 missing /dev/sdb1 But when the time comes to add the first main drive with the installed system on the raid-array with this command: mdadm --add /dev/md0 /dev/sda1 I receive an error message. The error message says that the device /dev/sda is (which makes sense) busy! Note: hardware raid solution is not available since the system is a laptop with two disk drives! Thank you

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• What is causing the unusual high load average?

  - by James

  I noticed on Tuesday night of last week, the load average went up sharply and it seemed abnormal since the traffic is small. Usually, the numbers usually average around .40 or lower and my server stuff (mysql, php and apache) are optimized. I noticed that the IOWait is unusually high even though the processes is barely using any CPU. top - 01:44:39 up 1 day, 21:13, 1 user, load average: 1.41, 1.09, 0.86 Tasks: 60 total, 1 running, 59 sleeping, 0 stopped, 0 zombie Cpu0 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu1 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu2 : 0.0%us, 0.3%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu3 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu4 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu5 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu6 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Cpu7 : 0.0%us, 0.0%sy, 0.0%ni, 91.5%id, 8.5%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1048576k total, 331944k used, 716632k free, 0k buffers Swap: 0k total, 0k used, 0k free, 0k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1 root 15 0 2468 1376 1140 S 0 0.1 0:00.92 init 1656 root 15 0 13652 5212 664 S 0 0.5 0:00.00 apache2 9323 root 18 0 13652 5212 664 S 0 0.5 0:00.00 apache2 10079 root 18 0 3972 1248 972 S 0 0.1 0:00.00 su 10080 root 15 0 4612 1956 1448 S 0 0.2 0:00.01 bash 11298 root 15 0 13652 5212 664 S 0 0.5 0:00.00 apache2 11778 chikorit 15 0 2344 1092 884 S 0 0.1 0:00.05 top 15384 root 18 0 17544 13m 1568 S 0 1.3 0:02.28 miniserv.pl 15585 root 15 0 8280 2736 2168 S 0 0.3 0:00.02 sshd 15608 chikorit 15 0 8280 1436 860 S 0 0.1 0:00.02 sshd Here is the VMStat procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 1 0 0 768644 0 0 0 0 14 23 0 10 1 0 99 0 IOStat - Nothing unusal Total DISK READ: 67.13 K/s | Total DISK WRITE: 0.00 B/s TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 19496 be/4 chikorit 11.85 K/s 0.00 B/s 0.00 % 0.00 % apache2 -k start 19501 be/4 mysql 3.95 K/s 0.00 B/s 0.00 % 0.00 % mysqld 19568 be/4 chikorit 11.85 K/s 0.00 B/s 0.00 % 0.00 % apache2 -k start 19569 be/4 chikorit 11.85 K/s 0.00 B/s 0.00 % 0.00 % apache2 -k start 19570 be/4 chikorit 11.85 K/s 0.00 B/s 0.00 % 0.00 % apache2 -k start 19571 be/4 chikorit 7.90 K/s 0.00 B/s 0.00 % 0.00 % apache2 -k start 19573 be/4 chikorit 7.90 K/s 0.00 B/s 0.00 % 0.00 % apache2 -k start 1 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % init 11778 be/4 chikorit 0.00 B/s 0.00 B/s 0.00 % 0.00 % top 19470 be/4 mysql 0.00 B/s 0.00 B/s 0.00 % 0.00 % mysqld Load Average Chart - http://i.stack.imgur.com/kYsD0.png I want to be sure if this is not a MySQL problem before making sure. Also, this is a Ubuntu 10.04 LTS Server on OpenVZ. Edit: This will probably give a good picture on the IO Wait top - 22:12:22 up 17:41, 1 user, load average: 1.10, 1.09, 0.93 Tasks: 33 total, 1 running, 32 sleeping, 0 stopped, 0 zombie Cpu(s): 0.6%us, 0.2%sy, 0.0%ni, 89.0%id, 10.1%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1048576k total, 260708k used, 787868k free, 0k buffers Swap: 0k total, 0k used, 0k free, 0k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1 root 15 0 2468 1376 1140 S 0 0.1 0:00.88 init 5849 root 15 0 12336 4028 668 S 0 0.4 0:00.00 apache2 8063 root 15 0 12336 4028 668 S 0 0.4 0:00.00 apache2 9732 root 16 0 8280 2728 2168 S 0 0.3 0:00.02 sshd 9746 chikorit 18 0 8412 1444 864 S 0 0.1 0:01.10 sshd 9747 chikorit 18 0 4576 1960 1488 S 0 0.2 0:00.24 bash 13706 chikorit 15 0 2344 1088 884 R 0 0.1 0:00.03 top 15745 chikorit 15 0 12968 5108 1280 S 0 0.5 0:00.00 apache2 15751 chikorit 15 0 72184 25m 18m S 0 2.5 0:00.37 php5-fpm 15790 chikorit 18 0 12472 4640 1192 S 0 0.4 0:00.00 apache2 15797 chikorit 15 0 72888 23m 16m S 0 2.3 0:00.06 php5-fpm 16038 root 15 0 67772 2848 592 D 0 0.3 0:00.00 php5-fpm 16309 syslog 18 0 24084 1316 992 S 0 0.1 0:00.07 rsyslogd 16316 root 15 0 5472 908 500 S 0 0.1 0:00.00 sshd 16326 root 15 0 2304 908 712 S 0 0.1 0:00.02 cron 17464 root 15 0 10252 7560 856 D 0 0.7 0:01.88 psad 17466 root 18 0 1684 276 208 S 0 0.0 0:00.31 psadwatchd 17559 root 18 0 11444 2020 732 S 0 0.2 0:00.47 sendmail-mta 17688 root 15 0 10252 5388 1136 S 0 0.5 0:03.81 python 17752 teamspea 19 0 44648 7308 4676 S 0 0.7 1:09.70 ts3server_linux 18098 root 15 0 12336 6380 3032 S 0 0.6 0:00.47 apache2 18099 chikorit 18 0 10368 2536 464 S 0 0.2 0:00.00 apache2 18120 ntp 15 0 4336 1316 984 S 0 0.1 0:00.87 ntpd 18379 root 15 0 12336 4028 668 S 0 0.4 0:00.00 apache2 18387 mysql 15 0 62796 36m 5864 S 0 3.6 1:43.26 mysqld 19584 root 15 0 12336 4028 668 S 0 0.4 0:00.02 apache2 22498 root 16 0 12336 4028 668 S 0 0.4 0:00.00 apache2 24260 root 15 0 67772 3612 1356 S 0 0.3 0:00.22 php5-fpm 27712 root 15 0 12336 4028 668 S 0 0.4 0:00.00 apache2 27730 root 15 0 12336 4028 668 S 0 0.4 0:00.00 apache2 30343 root 15 0 12336 4028 668 S 0 0.4 0:00.00 apache2 30366 root 15 0 12336 4028 668 S 0 0.4 0:00.00 apache2 This is the free ram as of today. total used free shared buffers cached Mem: 1024 302 721 0 0 0 -/+ buffers/cache: 302 721 Swap: 0 0 0 Update: Looking into the logs, particularly the PHP5-FPM, which is causing the CPU spike. I found that its segment faulting for some apparent reason. [03-Jun-2012 06:11:20] NOTICE: [pool www] child 14132 started [03-Jun-2012 06:11:25] WARNING: [pool www] child 13664 exited on signal 11 (SIGSEGV) after 53.686322 seconds from start [03-Jun-2012 06:11:25] NOTICE: [pool www] child 14328 started [03-Jun-2012 06:11:25] WARNING: [pool www] child 14132 exited on signal 11 (SIGSEGV) after 4.708681 seconds from start [03-Jun-2012 06:11:25] NOTICE: [pool www] child 14329 started [03-Jun-2012 06:11:58] WARNING: [pool www] child 14328 exited on signal 11 (SIGSEGV) after 32.981228 seconds from start [03-Jun-2012 06:11:58] NOTICE: [pool www] child 15745 started [03-Jun-2012 06:12:25] WARNING: [pool www] child 15745 exited on signal 11 (SIGSEGV) after 27.442864 seconds from start [03-Jun-2012 06:12:25] NOTICE: [pool www] child 17446 started [03-Jun-2012 06:12:25] WARNING: [pool www] child 14329 exited on signal 11 (SIGSEGV) after 60.411278 seconds from start [03-Jun-2012 06:12:25] NOTICE: [pool www] child 17447 started [03-Jun-2012 06:13:02] WARNING: [pool www] child 17446 exited on signal 11 (SIGSEGV) after 36.746793 seconds from start [03-Jun-2012 06:13:02] NOTICE: [pool www] child 18133 started [03-Jun-2012 06:13:48] WARNING: [pool www] child 17447 exited on signal 11 (SIGSEGV) after 82.710107 seconds from start I'm thinking that this might be causing the problem. If that is the cause, probably switching it off that to fastcgi/fcgid might resolve it... but still, I want to see if something else might be causing it to do this.

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• How to get more NFS packet details from Wireshark?

  - by Joe Swanson

  How can I get Wireshark to give me details about NFS packets at this level of granularity? (as exemplified here here) Specifically, I am interesting in looking at the the "Stable" option toward the bottom. When I analyze captured packets (whether by capturing directly via Wireshark, importing from a tshark dump, or importing from a tcpdump dump), I do not see a "Network File System" section in the packet details. I only get general TCP information. It recognizes that a packet is destined for a NFS port, but I am not able to see these details. Any ideas?

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• Requiring 802.1x login before allowing access to network resources

  - by Calvin Froedge

  I have a ZyXel GS2200-24 managed switch, and a free-radius server running on Ubuntu 11.10. Radius is configured and when I log into the switch the authentication goes through Radius. Now, I'm trying to ensure that access to web resources (as an example, I set up a web server on the ip 192.168.1.2) requires first authenticating with radius, before the switch will allow the connection. Am I correct that this should be handled at the switch level? What are these rules usually called / how are they usually defined?

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• Why is this LTO4 Tape-drive not working

  - by Tim Haegele

  # modprobe mptsas # dmesg [ 4274.796796] scsi target7:0:0: mptsas: ioc1: delete device: fw_channel 0, fw_id 0, phy 0, sas_addr 0x50050763124b29ac [ 4274.939579] mptsas 0000:01:00.0: PCI INT A disabled [ 4280.934531] Fusion MPT SAS Host driver 3.04.12 [ 4280.934552] mptsas 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 4280.934692] mptbase: ioc2: Initiating bringup [ 4281.490183] ioc2: LSISAS1064E B3: Capabilities={Initiator} [ 4281.490203] mptsas 0000:01:00.0: setting latency timer to 64 [ 4293.555274] scsi8 : ioc2: LSISAS1064E B3, FwRev=011e0000h, Ports=1, MaxQ=277, IRQ=16 [ 4293.574906] mptsas: ioc2: attaching ssp device: fw_channel 0, fw_id 0, phy 0, sas_addr 0x50050763124b29ac [ 4293.576471] scsi 8:0:0:0: Sequential-Access IBM ULTRIUM-HH4 B6W1 PQ: 0 ANSI: 6 [ 4293.578549] st 8:0:0:0: Attached scsi tape st0 [ 4293.578550] st 8:0:0:0: st0: try direct i/o: yes (alignment 512 B) [ 4293.578577] st 8:0:0:0: Attached scsi generic sg5 type 1 # mt -f /dev/st0 status mt -f /dev/st0 status mt: /dev/st0: rmtopen failed: Input/output error # dd if=/dev/zero of=/dev/nst0 bs=1024 count=10 dd: opening `/dev/nst0': Input/output error I am running debian squeeze 2.6.32-5-amd64 #1 SMP Sun May 6 04:00:17 UTC 2012 x86_64 GNU/Linux Server is Fujitsu TX140 with Controller Symbios Logic SAS1064ET PCI-Express Fusion-MPT SAS Tape+Hardware is new.

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• Linux Virtualization Options on EC2

  - by recampbell

  I need to subdivide EC2 (or perhaps other cloud provider) instances. I know you cannot run a full virtualization stack on another. For instance a Xen guest cannot host a VirtualBox guest. So this means I am left with operating system-level virtualization. EC2 kernels are only publishable by select vendors, so you cannot upload the custom kernels required for OpenVZ or Vserver. For Linux, I think this leaves me with lxc (on Ubuntu 9.10), User Mode Linux, or qemu. I'm having a hard time finding comparisons between them. Performance is a concern, as is the ability to provide SMP to the guests. I would also like to use COW/sparse roots to reduce guest provisioning. My question is, what are the trade-offs between these options?

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• Disable ProxyPass rules within a virtual host on apache 2

  - by chinto

  I have a global proxypass rule in httpd.conf rules at global level ProxyPass /test/css http://myserver:7788/test/css ProxyPassReverse /test/css http://myserver:7788/test/css and I have a virtual host Listen localhost:7788 NameVirtualHost localhost:7788 <VirtualHost localhost:7788> Alias /test/css/ "C:/jboss/server/default/deploy/test.ear/test-web-app.war/css/" </VirtualHost> I would like to disable all global proxypass rules applying in this virtual host? NoProxy doesn't seem to work. (The reason I would like to do this is I have below global rules which create a 502 proxy loop if applied within this virtual host #pass all requests to application server ProxyPass /test http://localhost:8080/test ProxyPassReverse /test http://localhost:8080/test ) What I'm trying to do is, serve all static content (like css) using apache, while still proxying all the rest of requests to the application server.

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• Problem with MSDE 2000 5 minute keepalive over ISDN

  - by mcrick

  We have a SQL Server transactionally pushing replicate data to an MSDE 2000 SP3a subscriber over ISDN. Prior to a recent upgrade to bring us to the MSDE 2000 level we pushed to MSDE 1. We are finding that there is now a 5 minute keepalive being instigated from MSDE 2000 which we cannot account for. Further, we can find no way to either disable it or lengthen the keepalive interval. Not surprisingly, we are finding a marked increase in ISDN line costs due to these previously non-existent keepalive packets! Please note that we are assuming that it is an MSDE 2000 server issue, but it could equally be some behaviour related to the way that replication is operating on MSDE 2000. Unfortunately, as yet, we have not identified a replication configuration parameter that affects the keepalive in any way. Can anyone advise how we might indentify a root cause for this problem (and ideally a fix)?

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• Problem with MSDE 2000 5 minute keepalive over ISDN

  - by mcrick

  We have a SQL Server transactionally pushing replicate data to an MSDE 2000 SP3a subscriber over ISDN. Prior to a recent upgrade to bring us to the MSDE 2000 level we pushed to MSDE 1. We are finding that there is now a 5 minute keepalive being instigated from MSDE 2000 which we cannot account for. Further, we can find no way to either disable it or lengthen the keepalive interval. Not surprisingly, we are finding a marked increase in ISDN line costs due to these previously non-existent keepalive packets! Please note that we are assuming that it is an MSDE 2000 server issue, but it could equally be some behaviour related to the way that replication is operating on MSDE 2000. Unfortunately, as yet, we have not identified a replication configuration parameter that affects the keepalive in any way. Can anyone advise how we might indentify a root cause for this problem (and ideally a fix)?

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• Getting apache to use ldap group and filesystem group information

  - by Angelo

  We have an Apache server which serves out of a particular directory, and just supplies a listing of files. From this directory, each subdirectory is owned by a certain group of users (at the filesystem level). User groups are determined by a posixGroup in ldap. Is there any simple way I can tell Apache to authorize access based on filesystem permissions, just like if the users were to access the filesystem from a shell? I would like to be able to simply add users/groups/directories without having to add another Directory or Location directive in Apache's conf?

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• Windows and Linux applications to show cumulative uploads/downloads for each app, at a glance

  - by jontyc

  I've read few quite a few other threads on SU, but they have been focused on instantaneous/average bandwidths (B/sec) rather than cumulative download/upload totals for a period. Either that or they don't drill down to application level. Resource Monitor in Windows 7 only shows bandwidth. I've just been trying NetLimiter and whereas it can show total uploaded/downloaded, it's a case of having one stats window open per application, as opposed to a table showing all applications at once. Looking for applications for both Windows and Linux (Ubuntu), but they don't need to be the same.

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• PHP not loading php.ini in directory or following error_reporting() on Windows 7

  - by Marcus

  Normally I develop under E_ALL error level, but for sanity on this project I want notices and strict off. So initially tried: error_reporting(E_ALL & ~(E_STRICT|E_NOTICE)); And several other combinations of the same thing, nothing worked. Next I tried to create a local php.ini the directory with error_reporting = E_ALL & ~E_NOTICE but nope, that didn't work either. phpinfo() is reporting: Scan this dir for additional .ini files: (none) Can someone help me fix either of these problems? Preferably both! Thanks! I'm running PHP Version 5.2.13 on Apache/2.2.14 under Windows 7 x64.

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• ip addresses/domain names are geographical bound?

  - by ajsie

  i wonder if ips are bound to specific geolocations? lets say that i've got this ip 111.111.111.111 from my ISP to my home computer in France. is it possible for me to use this ip in Norway? and the same goes with domain names. if iv'e got a domain name like mydomain.de, does it mean that my computer has to be in Germany or could it be located in Denmark? cause i always wonder where the actual server is located every time a website got different top level domains, eg google.dk, google.fr, google.de and so on. are they located in same country as the top domain or doesnt it matter?

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• /usr/bin/python Replacement

  - by tikiking1

  If I've changed the target of /usr/bin/python from /usr/bin/python2.7 to /usr/bin/python3.2 (I realize this was an ABSOUTELY HORRIBLE idea) in Ubuntu 12.04.1 LTS. Afterwards, several applications, including software-center and update-manager have stopped working. Insofar as I can tell, this is because they are written in Python2.7. I replaced the default /usr/bin/python shebang with the 2.7 one, and this fixes them on the application level. Switching /usr/bin/python back to /usr/bin/python2.7 really isn't an option, but is there a list of all applications installed by default in Ubuntu 12.04.1 LTS, if installed from a new CD-R, that use a shebang of #!/usr/bin/python instead of #!/usr/bin/pythonX.Y?

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• What is the best/easiest way to use scripts to analyze network traffic?

  - by yungin

  I'm looking to analyze packets via scripts. I'd like to use something high level. I'm in a mac/linux environment. I'm currently looking at different python+libpcap libraries. Perhaps lua+wireshark too. Maybe tcpdump+bash (but not sure that has a lot of info i can use). I also heard good things about scapy. Not sure. I'm wondering if you have any recommendations? There's quite a few of them out there. What have you found that works best? I'd definitely want something scriptable not something that I need to compile (like c/c++, etc)

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• Varnish "FetchError no backend connection" error

  - by clueless-anon

  Varnishlog: 0 CLI - Rd ping 0 CLI - Wr 200 19 PONG 1340829925 1.0 12 SessionOpen c 79.124.74.11 3063 :80 12 SessionClose c EOF 12 StatSess c 79.124.74.11 3063 0 1 0 0 0 0 0 0 0 CLI - Rd ping 0 CLI - Wr 200 19 PONG 1340829928 1.0 0 CLI - Rd ping 0 CLI - Wr 200 19 PONG 1340829931 1.0 12 SessionOpen c 108.62.115.226 46211 :80 12 ReqStart c 108.62.115.226 46211 467185881 12 RxRequest c GET 12 RxURL c / 12 RxProtocol c HTTP/1.0 12 RxHeader c User-Agent: Pingdom.com_bot_version_1.4_(http://www.pingdom.com/) 12 RxHeader c Host: www.mysite.com 12 VCL_call c recv lookup 12 VCL_call c hash 12 Hash c / 12 Hash c www.mysite.com 12 VCL_return c hash 12 VCL_call c miss fetch 12 FetchError c no backend connection 12 VCL_call c error deliver 12 VCL_call c deliver deliver 12 TxProtocol c HTTP/1.1 12 TxStatus c 503 12 TxResponse c Service Unavailable 12 TxHeader c Server: Varnish 12 TxHeader c Content-Type: text/html; charset=utf-8 12 TxHeader c Retry-After: 5 12 TxHeader c Content-Length: 418 12 TxHeader c Accept-Ranges: bytes 12 TxHeader c Date: Wed, 27 Jun 2012 20:45:31 GMT 12 TxHeader c X-Varnish: 467185881 12 TxHeader c Age: 1 12 TxHeader c Via: 1.1 varnish 12 TxHeader c Connection: close 12 Length c 418 12 ReqEnd c 467185881 1340829931.192433119 1340829931.891024113 0.000051022 0.698516846 0.000074035 12 SessionClose c error 12 StatSess c 108.62.115.226 46211 1 1 1 0 0 0 256 418 0 CLI - Rd ping 0 CLI - Wr 200 19 PONG 1340829934 1.0 0 CLI - Rd ping 0 CLI - Wr 200 19 PONG 1340829937 1.0 netstat -tlnp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN 3086/nginx tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1915/varnishd tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1279/sshd tcp 0 0 127.0.0.2:25 0.0.0.0:* LISTEN 3195/sendmail: MTA: tcp 0 0 127.0.0.2:6082 0.0.0.0:* LISTEN 1914/varnishd tcp 0 0 127.0.0.2:9000 0.0.0.0:* LISTEN 1317/php-fpm.conf) tcp 0 0 127.0.0.2:3306 0.0.0.0:* LISTEN 1192/mysqld tcp 0 0 127.0.0.2:587 0.0.0.0:* LISTEN 3195/sendmail: MTA: tcp 0 0 127.0.0.2:11211 0.0.0.0:* LISTEN 3072/memcached tcp6 0 0 :::8080 :::* LISTEN 3086/nginx tcp6 0 0 :::80 :::* LISTEN 1915/varnishd tcp6 0 0 :::22 :::* LISTEN 1279/sshd /etc/nginx/site-enabled/default server { listen 8080; ## listen for ipv4; this line is default and implied listen [::]:8080 default ipv6only=on; ## listen for ipv6 root /usr/share/nginx/www; index index.html index.htm index.php; # Make site accessible from http://localhost/ server_name localhost; location / { # First attempt to serve request as file, then # as directory, then fall back to index.html try_files $uri $uri/ /index.html; } location /doc { root /usr/share; autoindex on; allow 127.0.0.2; deny all; } location /images { root /usr/share; autoindex off; } #error_page 404 /404.html; # redirect server error pages to the static page /50x.html # #error_page 500 502 503 504 /50x.html; #location = /50x.html { # root /usr/share/nginx/www; #} # proxy the PHP scripts to Apache listening on 127.0.0.1:80 # #location ~ \.php$ { # proxy_pass http://127.0.0.1; #} # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 # location ~ \.php$ { fastcgi_pass 127.0.0.2:9000; fastcgi_index index.php; include fastcgi_params; } # deny access to .htaccess files, if Apache's document root # concurs with nginx's one # #location ~ /\.ht { # deny all; #} } /etc/nginx/sites-enabled/www.mysite.com.vhost server { listen 8080; server_name www.mysite.com mysite.com.net; root /var/www/www.mysite.com/web; if ($http_host != "www.mysite.com") { rewrite ^ http://www.mysite.com$request_uri permanent; } index index.php index.html; location = /favicon.ico { log_not_found off; access_log off; } location = /robots.txt { allow all; log_not_found off; access_log off; } # Deny all attempts to access hidden files such as .htaccess, .htpasswd, .DS_Store (Mac). location ~ /\. { deny all; access_log off; log_not_found off; } location / { try_files $uri $uri/ /index.php?$args; } # Add trailing slash to */wp-admin requests. rewrite /wp-admin$ $scheme://$host$uri/ permanent; location ~* \.(jpg|jpeg|png|gif|css|js|ico)$ { expires max; log_not_found off; } location ~ \.php$ { try_files $uri =404; include /etc/nginx/fastcgi_params; fastcgi_pass 127.0.0.2:9000; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; } include /var/www/www.mysite.com/web/nginx.conf; location ~ /nginx.conf { deny all; access_log off; log_not_found off; } } /etc/varnish/default.vcl # This is a basic VCL configuration file for varnish. See the vcl(7) # man page for details on VCL syntax and semantics. # # Default backend definition. Set this to point to your content # server. # backend default { .host = "127.0.0.2"; .port = "8080"; # .connect_timeout = 600s; #.first_byte_timeout = 600s; # .between_bytes_timeout = 600s; # .max_connections = 800; Note: uncommenting the last four options at default.vcl made no difference. cat /etc/default/varnish # Configuration file for varnish # # /etc/init.d/varnish expects the variables $DAEMON_OPTS, $NFILES and $MEMLOCK # to be set from this shell script fragment. # # Should we start varnishd at boot? Set to "yes" to enable. START=yes # Maximum number of open files (for ulimit -n) NFILES=131072 # Maximum locked memory size (for ulimit -l) # Used for locking the shared memory log in memory. If you increase log size, # you need to increase this number as well MEMLOCK=82000 # Default varnish instance name is the local nodename. Can be overridden with # the -n switch, to have more instances on a single server. INSTANCE=$(uname -n) # This file contains 4 alternatives, please use only one. ## Alternative 1, Minimal configuration, no VCL # # Listen on port 6081, administration on localhost:6082, and forward to # content server on localhost:8080. Use a 1GB fixed-size cache file. # # DAEMON_OPTS="-a :6081 \ # -T localhost:6082 \ # -b localhost:8080 \ # -u varnish -g varnish \ # -S /etc/varnish/secret \ # -s file,/var/lib/varnish/$INSTANCE/varnish_storage.bin,1G" ## Alternative 2, Configuration with VCL # # Listen on port 6081, administration on localhost:6082, and forward to # one content server selected by the vcl file, based on the request. Use a 1GB # fixed-size cache file. # DAEMON_OPTS="-a :80 \ -T 127.0.0.2:6082 \ -f /etc/varnish/default.vcl \ -S /etc/varnish/secret \ -s file,/var/lib/varnish/$INSTANCE/varnish_storage.bin,1G" If you need any other info let me know. I am all out of clue as to whats the problem.

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• SElinux process killed while trying to set boolean

  - by Antonio

  I've got a strange problem. I can not allow apache to connect to database at my CentOC 6.4 box: [root@centos6 ~]# setsebool -P httpd_can_network_connect on Killed [root@centos6 ~]# sestatus -b | grep httpd_can_network_connect httpd_can_network_connect off httpd_can_network_connect_cobbler off httpd_can_network_connect_db off I watched log file, but there was no log messages: tail -f /var/log/audit/audit.log UPDATE: There are some information in /var/log/messages: Nov 9 19:07:16 vs302 kernel: setsebool invoked oom-killer: gfp_mask=0x280da, order=0, oom_adj=0, oom_score_adj=0 Nov 9 19:07:16 vs302 kernel: setsebool cpuset=/ mems_allowed=0 Nov 9 19:07:16 vs302 kernel: Pid: 1660, comm: setsebool Not tainted 2.6.32-358.23.2.el6.x86_64 #1 Nov 9 19:07:16 vs302 kernel: Call Trace: Nov 9 19:07:16 vs302 kernel: [<ffffffff810cb641>] ? cpuset_print_task_mems_allowed+0x91/0xb0 Nov 9 19:07:16 vs302 kernel: [<ffffffff8111ce40>] ? dump_header+0x90/0x1b0 Nov 9 19:07:16 vs302 kernel: [<ffffffff8111d2c2>] ? oom_kill_process+0x82/0x2a0 Nov 9 19:07:16 vs302 kernel: [<ffffffff8111d201>] ? select_bad_process+0xe1/0x120 Nov 9 19:07:16 vs302 kernel: [<ffffffff8111d700>] ? out_of_memory+0x220/0x3c0 Nov 9 19:07:16 vs302 kernel: [<ffffffff8112c3dc>] ? __alloc_pages_nodemask+0x8ac/0x8d0 Nov 9 19:07:16 vs302 kernel: [<ffffffff81160d6a>] ? alloc_pages_vma+0x9a/0x150 Nov 9 19:07:16 vs302 kernel: [<ffffffff81143f0b>] ? handle_pte_fault+0x76b/0xb50 Nov 9 19:07:16 vs302 kernel: [<ffffffff81228664>] ? task_has_capability+0xb4/0x110 Nov 9 19:07:16 vs302 kernel: [<ffffffff81004a49>] ? __raw_callee_save_xen_pmd_val+0x11/0x1e Nov 9 19:07:16 vs302 kernel: [<ffffffff8114452a>] ? handle_mm_fault+0x23a/0x310 Nov 9 19:07:16 vs302 kernel: [<ffffffff811485b6>] ? vma_adjust+0x556/0x5e0 Nov 9 19:07:16 vs302 kernel: [<ffffffff810474e9>] ? __do_page_fault+0x139/0x480 Nov 9 19:07:16 vs302 kernel: [<ffffffff81148b8a>] ? vma_merge+0x29a/0x3e0 Nov 9 19:07:16 vs302 kernel: [<ffffffff81149fdc>] ? do_brk+0x26c/0x350 Nov 9 19:07:16 vs302 kernel: [<ffffffff8100ba1d>] ? retint_restore_args+0x5/0x6 Nov 9 19:07:16 vs302 kernel: [<ffffffff81513bfe>] ? do_page_fault+0x3e/0xa0 Nov 9 19:07:16 vs302 kernel: [<ffffffff81510fb5>] ? page_fault+0x25/0x30 Nov 9 19:07:16 vs302 kernel: Mem-Info: Nov 9 19:07:16 vs302 kernel: Node 0 DMA per-cpu: Nov 9 19:07:16 vs302 kernel: CPU 0: hi: 0, btch: 1 usd: 0 Nov 9 19:07:16 vs302 kernel: Node 0 DMA32 per-cpu: Nov 9 19:07:16 vs302 kernel: CPU 0: hi: 186, btch: 31 usd: 30 Nov 9 19:07:16 vs302 kernel: active_anon:132249 inactive_anon:46 isolated_anon:0 Nov 9 19:07:16 vs302 kernel: active_file:56 inactive_file:59 isolated_file:0 Nov 9 19:07:16 vs302 kernel: unevictable:0 dirty:2 writeback:0 unstable:0 Nov 9 19:07:16 vs302 kernel: free:1369 slab_reclaimable:1774 slab_unreclaimable:11588 Nov 9 19:07:16 vs302 kernel: mapped:54 shmem:48 pagetables:1211 bounce:0 Nov 9 19:07:16 vs302 kernel: Node 0 DMA free:2440kB min:72kB low:88kB high:108kB active_anon:12156kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:14648kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:24kB slab_unreclaimable:8kB kernel_stack:0kB pagetables:16kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes Nov 9 19:07:16 vs302 kernel: lowmem_reserve[]: 0 590 590 590 Nov 9 19:07:16 vs302 kernel: Node 0 DMA32 free:3036kB min:3072kB low:3840kB high:4608kB active_anon:516840kB inactive_anon:184kB active_file:224kB inactive_file:236kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:604988kB mlocked:0kB dirty:8kB writeback:0kB mapped:216kB shmem:192kB slab_reclaimable:7072kB slab_unreclaimable:46344kB kernel_stack:880kB pagetables:4828kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:128 all_unreclaimable? no Nov 9 19:07:16 vs302 kernel: lowmem_reserve[]: 0 0 0 0 Nov 9 19:07:16 vs302 kernel: Node 0 DMA: 0*4kB 1*8kB 0*16kB 0*32kB 0*64kB 1*128kB 1*256kB 0*512kB 0*1024kB 1*2048kB 0*4096kB = 2440kB Nov 9 19:07:16 vs302 kernel: Node 0 DMA32: 129*4kB 67*8kB 30*16kB 19*32kB 6*64kB 2*128kB 1*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 3036kB Nov 9 19:07:16 vs302 kernel: 182 total pagecache pages Nov 9 19:07:16 vs302 kernel: 0 pages in swap cache Nov 9 19:07:16 vs302 kernel: Swap cache stats: add 0, delete 0, find 0/0 Nov 9 19:07:16 vs302 kernel: Free swap = 0kB Nov 9 19:07:16 vs302 kernel: Total swap = 0kB Nov 9 19:07:16 vs302 kernel: 157439 pages RAM Nov 9 19:07:16 vs302 kernel: 6271 pages reserved Nov 9 19:07:16 vs302 kernel: 2686 pages shared Nov 9 19:07:16 vs302 kernel: 146395 pages non-shared Nov 9 19:07:16 vs302 kernel: [ pid ] uid tgid total_vm rss cpu oom_adj oom_score_adj name Nov 9 19:07:16 vs302 kernel: [ 271] 0 271 2798 231 0 -17 -1000 udevd Nov 9 19:07:16 vs302 kernel: [ 476] 0 476 2797 230 0 -17 -1000 udevd Nov 9 19:07:16 vs302 kernel: [ 718] 0 718 2279 122 0 0 0 dhclient Nov 9 19:07:16 vs302 kernel: [ 762] 0 762 6909 58 0 -17 -1000 auditd Nov 9 19:07:16 vs302 kernel: [ 787] 0 787 62270 147 0 0 0 rsyslogd Nov 9 19:07:16 vs302 kernel: [ 801] 25 801 40326 2655 0 0 0 named Nov 9 19:07:16 vs302 kernel: [ 850] 0 850 16563 172 0 -17 -1000 sshd Nov 9 19:07:16 vs302 kernel: [ 875] 0 875 23451 240 0 0 0 sshd Nov 9 19:07:16 vs302 kernel: [ 966] 498 966 4780 44 0 0 0 wrapper Nov 9 19:07:16 vs302 kernel: [ 968] 498 968 497404 40812 0 0 0 java Nov 9 19:07:16 vs302 kernel: [ 1057] 0 1057 20216 225 0 0 0 master Nov 9 19:07:16 vs302 kernel: [ 1064] 89 1064 20278 209 0 0 0 qmgr Nov 9 19:07:16 vs302 kernel: [ 1071] 0 1071 27075 121 0 0 0 bash Nov 9 19:07:16 vs302 kernel: [ 1111] 0 1111 24880 350 0 0 0 httpd Nov 9 19:07:16 vs302 kernel: [ 1117] 48 1117 24913 351 0 0 0 httpd Nov 9 19:07:16 vs302 kernel: [ 1118] 48 1118 24880 337 0 0 0 httpd Nov 9 19:07:16 vs302 kernel: [ 1119] 48 1119 24880 337 0 0 0 httpd Nov 9 19:07:16 vs302 kernel: [ 1120] 48 1120 24880 337 0 0 0 httpd Nov 9 19:07:16 vs302 kernel: [ 1121] 48 1121 24880 337 0 0 0 httpd Nov 9 19:07:16 vs302 kernel: [ 1122] 48 1122 24880 337 0 0 0 httpd Nov 9 19:07:16 vs302 kernel: [ 1124] 48 1124 24880 337 0 0 0 httpd Nov 9 19:07:16 vs302 kernel: [ 1125] 48 1125 24880 337 0 0 0 httpd Nov 9 19:07:16 vs302 kernel: [ 1129] 0 1129 29313 151 0 0 0 crond Nov 9 19:07:16 vs302 kernel: [ 1143] 0 1143 1018 22 0 0 0 agetty Nov 9 19:07:16 vs302 kernel: [ 1146] 0 1146 1015 22 0 0 0 mingetty Nov 9 19:07:16 vs302 kernel: [ 1514] 0 1514 23451 237 0 0 0 sshd Nov 9 19:07:16 vs302 kernel: [ 1517] 0 1517 27075 113 0 0 0 bash Nov 9 19:07:16 vs302 kernel: [ 1641] 89 1641 20236 218 0 0 0 pickup Nov 9 19:07:16 vs302 kernel: [ 1659] 0 1659 25234 39 0 0 0 tail Nov 9 19:07:16 vs302 kernel: [ 1660] 0 1660 89903 85712 0 0 0 setsebool Nov 9 19:07:16 vs302 kernel: Out of memory: Kill process 1660 (setsebool) score 568 or sacrifice child Nov 9 19:07:16 vs302 kernel: Killed process 1660, UID 0, (setsebool) total-vm:359612kB, anon-rss:342708kB, file-rss:140kB

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