General :: Debian - Server Does Not Appear To Be Handling Sessions Properly?
Jul 21, 2011
after installing Debian 6 on a server. When I try to install a software called ActiveCampaign, I get the following error ... "Your server does not appear to be handling sessions properly."I have install Apache, PHP, MySql and Perl already. Also, after the server restarts, I Webmin will not automatically start, even thou it is setup in the Webmin configuration to start with the server. I have to use /etc/init.d/webmin start from a command line after I su.
My last question is about ftp permissions. I have install proftpd and it seems to be working fine, but when I try to edit any file or upload, I can not. In order to upload and manipulate files, I am using WinSCP under root, wich is a big NO NO.Sorry for the three questions, but I figured I would ask all in one post, instead of creating multiple, since I already have your attention.
I want to run a script when the switch goes down and an other when it goes up. Is there an easy way to pull this off in Debian (preferably with no other than system tools)? I suppose there is no difference (in the OS point of view) between unplugging ethernet cable and the switch losing power.
On an event I get lines like these in the syslog: Jun 15 17:49:41 debian kernel: [ 5506.956130] igb: eth1 NIC Link is Down ... Jun 15 17:49:45 debian kernel: [ 5511.168788] igb: eth1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
In FreeBSD you can pipe log messages (pre-filtered by regex patterns) to a program. What is the easiest way to replicate this on Debian (with as little additional software as possible)?
I am no longer working on the Linux-machine directly, but I'm using Windows puTTY to get a terminal-session. Within that puTTY window I want to switch (or maybe create first) several sessions between which I can switch arbitrarily. I have read about using Ctrl-Alt-Fn, which doesn't work, most likely due to the puTTY interface. I have tried chvt n, which doesn't do anything either (or that it seems). I have tried "bash &" and got bash in the background, which I could call forth using fg, but then had to stay with that and couldn't switch anywhere. Only option was "exit". So, what's the correct way to get several sessions in that puTTY window and switch between them?
I have created a nfq handler via nfq_open() and using the returned qhandle to bind my application program to a specific queue number that is configured in iptables. when i invoke nfq_create_queue() my program is stuck there and the back trace shows it is blocked in recvfrom()
bt
in recvfrom () from /lib/x86_64-linux-gnu/libpthread.so.0 in nfnl_recv () from /usr/lib/libnfnetlink.so.0 in nfnl_catch () from /usr/lib/libnfnetlink.so.0
I've two internet based server ( xx.xx.xx.xx and yy.yy.yy.yy ) The Y server is running VNC server and is responsible for answering to VNC sessions. But I need to hide the IP of Y server so I want X server to be as VNC Proxy and redirect all VNC sessions to Y server.
I guess the best way is to use iptables but actually I can't get it working so
I'm working on a thorny mod_rewrite problem. I have a mac connected to my LAN running MAMP (Mac/Apache/MySQL/PHP). I request a non-existent file:
Code: http://192.168.1.2:8888/careers/db/1.html I see this in the mod_rewrite log file:
Code: 192.168.1.102 - - [14/Nov/2009:13:46:07 --0800] [192.168.1.2/sid#807df8][rid#8ec850/initial] (2) init rewrite engine with requested uri /careers/db/1.html 192.168.1.102 - - [14/Nov/2009:13:46:07 --0800] [192.168.1.2/sid#807df8][rid#8ec850/initial] (1) pass through /careers/db/1.html Note that the requested uri is /careers/db/1.html
If I change just the file extension on my request to PHP like so:
Code: [URL]
Then the request uri is totally different now. Here's the rewrite log:
Code: 192.168.1.102 - - [14/Nov/2009:13:47:23 --0800] [192.168.1.2/sid#807df8][rid#8fc850/initial] (2) init rewrite engine with requested uri /Applications/MAMP/htdocs/careers/ 192.168.1.102 - - [14/Nov/2009:13:47:23 --0800] [192.168.1.2/sid#807df8][rid#8fc850/initial] (1) pass through /Applications/MAMP/htdocs/careers/ Note that the requested uri now has a full path which does not include the actual filename, /Applications/MAMP/htdocs/careers/
What the heck? More info. If I request [URL], I can actually access p1.php. The requested uri is /careers/db/p1.php. The problem appears to be because the filename starts with a number. I can also request [URL] and get thru to 1.php with requested uri /careers/db//1.php. Does mod_rewrite think /1 refers to a backreference or something? Why can apache handle the html file request properly and not the php file request?
I currently run a home sever using windows server 2008. On it I'm using VMware to run 2 virtual machines (currently running CentOS (which is Red Hat based) as web and mail servers. It's not a big setup, we only host our personal websites and a couple for some friends. Although server 2008 handles resouces much better than server 2003, it's still running windows, which as we know is far more inferior to a Linux server. I'm trying to convince the husband to let me run everything on Debian, but he wants to run it on Red Hat (which okay, isn't bad but our household is devided. We have long running arguments because he likes his boxes Red Hat based running KDE, and I like my Debian distros running Gnome!)
The host server is running on a standard pc box, it's got a 2.5 gigahertz dual core processor and 3 gig of ram, almost one TB storage. (don't ask why I'm including this drastically important info!) I want to run the entire network on Debian. So that would be the main host running Debian and the two virtual machines also. The host itself would need to run as a file and app server for our home network and the two vertuals as web and mail servers. (we run about 12 domains three of which are under heavy usage with Mysql databases, so we run two servers so we can dedicate more rescources to the virtual server that sucks the most juice.) I was wondering how Debian handles virtualisation and what program(s) would be a good alternative to VMware?
But, if there is : symbol which separate namespace from action problems coming:
symfony doct[TAB] will be completed to symfony doctrine:
But nothing happens if you want complete after : symbol. I've found out that for readline there is three words because it splits line with $COMP_WORDBREAKS
Code:
$ echo $COMP_WORDBREAKS "'><=;|&(:
I played with $COMP_WORDS array and tried every thought I had to make it work, but failed. What I should do to escape colon and make readline consider it as one word? Or there is way perhaps to workaround it?
I have an issue with my web server. We are running RedHat Enterprise Linux 3.0 with Apache 2.0 and Tomcat 5.5. The situation has arisen that the httpd sessions never terminate. New connections continue and continue to be created and never die. I have restarted the apache services to reset the connection and have even rebooted the server, however, to no avail. Yes, that does the trick of getting the web sites operational, however, this is not a solution.
I have searched and searched here, www.google.com/linux to no avail. I have looked through the apache.org bug tracker and can't find anything like what I am experiencing. This happened 6 months ago and I got lucky and it stopped, however, the situation has resurfaced. I have reviewed the logs and found nothing that provides any insight.
During the business day, the number of httpd connections continue to grow and I decided to let it see how high it would get before the web sites would crash. That magical number is 203. Now that it is later in the evening and about 2 hours since I restarted the httpd services, I now only have 59 connections. However, I'm fairly certain based upon the traffic on these 2 websites, that in the evening, there aren't many connections after 2000 hours.
I have two Debian boxes, A and B. I would like that a window (for example vlc, or whatever) displays on both A and B. The process (i.e., the X11 client) runs on A. If I interact with the window from box A, it should affect the window on box B. And, if I interact with the window from box B, it should affect the window on box A.
I am developing a device that will run Linux as its operating system.The device is a small form factor X86 device with a flash drive exposed as a SATA-device. So it is not very dissimilar from any other PC running Linux.For several good reasons I am building my own "distribution", instead of using an existing one.What confuses me is how mount/umount of the root file system is handled.I boot my kernel with the commandline "root=/dev/sda1 rw" which works fine. But everytime I do poweroff or reboot Busybox complained about no /etc/fstab, so I decided to build one.Should I have an entry for my root file system? It seems like this is shadowed by the rootfs anyway. I.e. if I have the fstab entry "/dev/sda1 / ext2 1 1" mount still reports rootfs on / type rootfs (rw)/dev/root on / type ext2 (rw,relatime,errors=continue)My questions are:Do I need to worry? Will the drive be correctly unmounted by the kernel on poweroff/reboot?If I want to perform file system checking on boot, can I do that without resorting to an initrd?
I'm trying to install debian on my HP laptop but get the following problem... After the live CD boot screen shows up i go to XFCE > install it loads vmlinuz and init.gz and after that the screen goes blank i tried graphical install, advanced install, advanced graphical install but those too didn't work also i tried all of these from LXDE menu but the same problem My laptop is HP pavillion dv6 its got an ATI radeon graphics card (hope there's no problem with the display) 4GB ram intel core i7 However the cd works fine with my old desktop computer which has no graphics card 256MB ram intel P4 CPU Do i need to set some boot parameters?
I've used NoMachine's NX software for some time, but on one of my machines it simply will not work. At first it did, but now when I log in it authenticates, starts downloading a session, but then drops dead. There is no hint of what the problem may be except in /var/log/messages on the server machine:
User 'bill' from '192.168.1.1' logged out. 'NXLogin::reset'
Notice that it's a login reset, after authentication went fine. Researching this I find the problem is often caused by a missing fixed font, which is remedied with an: # apt-get install xfonts-base --reinstall but that doesn't help. I have completely deinstalled and purged the three Nomachine packages on the server, deleting all associated directories, and reinstalled them, but no help. From my client machine I can log into a NX session just fine, so I'm sure it's not the client machine. The Linux version of this software has a limit of 2 sessions, and I suspect the server may have some bogus sessions open, but where? I've done a purge and deleted /usr/NX and /home/bill/.nx so where else could this be?
I have been able to log into a tty[1-6] as root or my user, and then startx -- :1, while logged in as myuser and running X on tty7, , but this somehow skips my default desktop manager (GDM3) and boot straight into LXDE (with no menus!). In /etc/X11/default-diplay-manager I have: /usr/sbin/gdm3 ? How do I get startx -- :1 to start a desktop manager?
Related 2nd question: When I did the above startx -- :1, it would start the X session in the same tty (e.g. tty2) where I was logged in when running the startx command. It used to be (in older Linux versions) that startx -- :1 would start an X session on tty8 (and the default would be :0 on tty7). Is this the (new) way things are supposed to work?
I have been running Lenny with the non-free nVidia drivers for a while now, but decided to run testing RC2.When I was done my monitor had a solid blue-gray background and the mouse pointer, but none of the GUI parts displayed (blank). After a couple of checks I went back to the gdm logon screen and opened 'sessions' to _not_ find Gnome as one of the choices. So I logged into Gnome(failsafe) and got my full GUI.Console (F1) and xterm also work fine.Trying to get my Gnome Desktop back. GDM is working and I have the session choice for TWM, but with Gnome(failsafe) working I haven't tried it yet to see if it works.
I am working on tracing the signal handling mechanism in linux kernel internallly. For that, i build the kernel. Now, i want to trace the signal handling mechanism in the old kernel. I got to about SYSLOG and PRINTK for this. But, how to use these tools exactly in tracing the handling of signals internally ?. Is, there any tool similar to backtrace to do that?. How the call flow is done internally ?
Pretty soon, I hope, I'll get my brand new PC and wish to install a Linux disto. on it. openSuse may be it But I read recently that people prefer to do a fresh install of a newer version of openSuse, instead of upgrading it, apparently because of problems that may occur by the upgrade. As I understand, this preference apply to all Linux distributions and not only openSuse. Thus I wonder if there's a Linux distro. that's best in handling upgrades?I don't want to make a fresh new install each and every time that my disro. has a new version. I'm afraid to lose the data in that installation, and backing-up the data would be a headache. Also I plan to install a Windows OS alongside the Linux one via the Dual Boot configuration.
My sound on Runescape stops and picks up, is very choppy and annoying. I'm using Debian "Lenny". Sound on everything else works just fine (Flash, VLC, etc...)
Here's the setup: One x86 server (Red Hat 4) with two serial connections to an embedded linux device. One serial connection is to a power control so the device can the restarted, and the other is used for a console to this device. Both serial connections use minicom. People on my team VNC to the x86 server, where they find the two minicom sessions waiting for them as they are left open. I would like to automate connecting to the server and communicating over the serial lines.
Supposing I use ssh to the x86 server, could minicom be used over the serial lines without terminating the minicom processes seen through VNC? If not, is there a way to re-open those windows from within the ssh session, so a user who VNCs to the server won't have to reopen them? Could a single ssh connection control two minicom terminals simultaneously, or would there need to be two ssh connections? It is assumed a user and the automated process will *not* try to access the device at the same time; the automation would trigger during off hours.
We started hosting some very large content on our site, and the usage patterns in cacti have revealed that the HTTP sessions through our load-balancers drop off dramatically right at midnight.
The logrotate process runs right at midnight, and issues a reload command through the service tool (CentOS 5.5): Code: $ cat /etc/logrotate.d/httpd /data/websites/logs/*_log /var/log/httpd/*log { missingok daily dateext compress rotate 7 sharedscripts postrotate /sbin/service httpd reload > /dev/null 2>/dev/null || true endscript }
Looking at the init script reveals that the reload section is suppose to trigger a HUP of the httpd process: Code: reload() { echo -n $"Reloading $prog: " if ! LANG=$HTTPD_LANG $httpd $OPTIONS -t >&/dev/null; then RETVAL=$? echo $"not reloading due to configuration syntax error" failure $"not reloading $httpd due to configuration syntax error" else killproc -p ${pidfile} $httpd -HUP RETVAL=$? fi echo }
In which, Apache should reload it's configuration and start the new logfile without breaking current sessions. However that clearly isn't what is going on. I'm tempted to edit the logrotate script to trigger a HUP directly by cat'ing the PID file directly. Is this normal behavior for Apache when signaled with a HUP?
I'm having problems establishing secure sessions with my bank's online banking service provider. I've already contacted their local tech and together we were unable to solve the problem. I've tried deleting my cookies, session store, cache, and none of it worked. He's currently forwarding our conversation to the service provider's tech support line, but who knows what will come of it. Or even if they will offer support for an iceweasel user. I'm using Iceweasel 3.6.4~build2-1 out of the experimental repo.
I'm able to login successfully to online banking site to view my list of accounts, however if I try going any further than that, I'm redirected to an error message page that tells me a security error has occurred - the online session has expired. I get this on browser profiles 1, 2, and 3, however I do not get the error message on profile '0' (default) or on newly created profiles. And as mentioned earlier, I've tried deleting all persistent data (cookies, session, cache) on a non-working profile and the problem still exists. Let me know if I can provide any more information.
Running Jessie (with a low-pinned Debian-based repositories added to my sources.list (e.g. Kali, kxstudio) for those packages not currently available on Debian (like the Kali menu of security tools). Running on a HP 15-r189nd (Energy Star) laptop.
First question: How do I get GDM3 to add root as an option during login? I can type the root user name in. I don't need it to show the root user in the user list (would actually prefer to need to type it in), but I do want to be able to start an X session as root, since some of the Kali tools (e.g. nmap) needs root to function fully. If I type in root and try to start, it just takes me back to the GDM3 login.
Second question: When I want to select my Desktop Enviroment/Window Manager in GDM3, the list appears below the little gear so I can only see half of the list (xfce not visible to select). How do I change the GDM3 appearance/settings that will change the position of the DE list?
Third question: How do I get multiple X sessions running simultaneously? What I have been able to do, while logged in as myuser and running X on tty7, is to log into a tty[1-6] as root, and then startx -- :1, but this somehow skips my default desktop manager (GDM3) and boot straight into LXDE (with no menus!). In /etc/X11/default-diplay-manager I have: /usr/sbin/gdm3 ? How do I get startx -- :1 to start a desktop manager?
Fourth question: When I did the above startx -- :1 as root, it would start the X session in the same tty (e.g. tty2) where I was logged in as root running the startx command. It used to be (in older Linux versions) that startx -- :1 would start an X session on tty8 (and the default would be :0 on tty7). Is this the (new) way things are supposed to work? Or is there something wrong with my setup?
Question 5: Once I have started an LXDE session as root, how do I get it to show the full application menu that my regular user can see? Can I just copy the config files over? Which ones? Or is there a better way?
Question 6: Gnome used to start fine. Then I ran Gnome on Wayland once, and now regular Gnome (on X?) no longer runs, but give me a "Oops! Something went wrong" error and Alt-F4 just takes me back to GDM3. Classic Gnome and Gnome on Wayland still runs OK. Should I log a bug report?
I mostly do .Net development in a Windows 7 virtualbox. I use the host for simple things such as web browsing, skype, chat, etc. All things that are fantastically available on Ubuntu which I in many ways prefer. So this has been begging the question for a while: why even use Windows on the host, seems like a Linux host would use less resources (untested) and allow my Windows VMs to run better while allowing me to do my non-development stuff in an interface I prefer.
So easiest way to do this - I downloaded wubi and installed Ubuntu. I installed in it Virtualbox, and then start add and start my VM to get this message: Failed to open a session for the virtual machine VS2010, Could not open the medium '/host/Users/George Mauer/Virtualbox VMs/VS2010/C:/Users/George Mauer/.VirtualBox/HardDisks/VS2010.vdi; VD: error VERR_FILE_NOT_FOUND opening image file '/host/Users/George Mauer/Virtualbox VMs/VS2010/C:/Users/George Mauer/.VirtualBox/HardDisks/VS2010.vdi; (VERR_FILE_NOT_FOUND).
You see what's going on? With wubi, the windows drive gets mounted at /host/ but virtualbox is for some reason appending an absolute path! I would very much like to use the same exact VM file since it would retain Snapshots and I would be able to use it in either windows or Ubuntu mode. However, even if I try to simply mount the drives into a new VM I get an error: Failed to open the hard disk /host/Users/George Mauer/.VirtualBox/HardDisks/VS2010.vdi. Cannot register the hard disk '/host/Users/George Mauer/.VirtualBox/HardDisks/VS2010.vdi' {guid...} because a hard disk '/host/Users/George Mauer/VirtualBox VMs/VS2010/C:/Users/George Mauer.VirtualBox/HardDisks/VS2010.vdi with UUID {guid...} already exists.
This is especially odd since this worked fine with my recently created Android VM, though this might have something to do with the fact that VirtualBox recently changed their default VM storage locations. Any idea how to fix this? My Linux-fu is weak but I seem to remember from CS class something about symbolic links that might be relevant here?
I'm running VNC Server on CentOS5 on a brand new installation, this is for some of my students to use specific software via VNC on their machines from home that they otherwise don't have access to on their Windows machines. This has been working fine on our previous server for a few years but the hardware is now outdated so I have upgraded and put a fresh install of CentOS 5 on. This works fine for about 24 hours and then eventually one of the session ends up freezing where the user then can see everything on their session, the cursor can move but they cant click a single thing.
I have a Debian VPS running Lenny and I'm trying to setup a way to run remote desktop sessions from it. I went with FreeNX, NX client for windows from nomachine, XDM and xfce4. All seems to have installed well, but I can't start an NX session on my box. I can connect to the server and authenticate, but the client hangs on "Downloading the session information," eventually timing out. The log output is below - I'm not even seeing an error message. Any ideas?
[Code]...
The only thing I noticed during install, which was about 400 packages since this was a barebones VPS, was that I should consider recompiling the kernel with CONFIG_SOFTWARE_SUSPEND=y. I don't know if this has any impact on session information, however, since this is a new session, not one I'm trying to resume.
