Re: PerChild Error
Pablo Yaggi wrote: It doesn't dump anything, i have this CoreDumpDirectory /tmp/ and it dumps nothing there. ok, that looks good so far... What I saw is that a new process for the site (user pablo) is being started about 2 seconds all the time and each process logs what I mention before, so I think the process is not even starting in the right way. The main process is starting, because I can stablish a connection with a browser, but the request is never attended. Please let me know how I can log something else or dump the core. I can't open the process with gdb because the process is dieing permantly, is it any usefull for you a dump from the main process? wich kind ?. Yes I 'm using linux, version 2.4.21 from mandrake 9.1 There is a fix in the open source version of 2.0.46 http://www.apache.org/dist/httpd/httpd-2.0.46.tar.gz ...which allows coredumps on Linux when you start httpd as root and code CoreDumpDirectory in httpd.conf. If you start httpd as non-root, it should just work (i.e., you don't need the fix), assuming CoreDumpDirectory points to somewhere like /tmp where the non-root user can create files. Pablo Yaggi wrote: I forgot this in my last post, output from httpd -V Server version: Apache-AdvancedExtranetServer/2.0.46 I don't know what is in this vendor's version of Apache. You might want to talk to them, or try the open source version. Greg
Re: PerChild Error
[EMAIL PROTECTED] wrote: There is a fix in the open source version of 2.0.46 http://www.apache.org/dist/httpd/httpd-2.0.46.tar.gz ...which allows coredumps on Linux when you start httpd as root and code CoreDumpDirectory in httpd.conf. If you start httpd as non-root, it should just work (i.e., you don't need the fix), assuming CoreDumpDirectory points to somewhere like /tmp where the non-root user can create files. ps. This fix is mainly to os/unix/unixd.c::unixd_setup_child() . That function is not called by the perchild mpm, so it won't help your situation. I'm assuming perchild does its own setuid calls, since the user ids are a unique feature of perchild. You could look for this and code prctl(PR_SET_DUMPABLE,1) after the setuid. Here's what I did in the mainstream code: http://cvs.apache.org/viewcvs.cgi/httpd-2.0/os/unix/unixd.c.diff?r1=1.56r2=1.57diff_format=h Good luck! Greg not about to become the PerChild maintainer Ames
Re: PerChild Error
No, it was running as less privileged user , and the version Extranet is just somthing mandrake puted there, I'm recompiling mandrakes rpms, maybe there's some patch there that stops the dumps, i'll try to rebuild the source. But now I'm trying muxmpm cause somebody told me that perchild it was not working at all, did you manage to make it work ? if it is so, are you cgi working at right userid ? do you have php running ? what happens with ssl request on namebased virtual hosts ? who attends ? Thank's Pablo On Monday 23 June 2003 11:36 am, [EMAIL PROTECTED] wrote: Pablo Yaggi wrote: It doesn't dump anything, i have this CoreDumpDirectory /tmp/ and it dumps nothing there. ok, that looks good so far... What I saw is that a new process for the site (user pablo) is being started about 2 seconds all the time and each process logs what I mention before, so I think the process is not even starting in the right way. The main process is starting, because I can stablish a connection with a browser, but the request is never attended. Please let me know how I can log something else or dump the core. I can't open the process with gdb because the process is dieing permantly, is it any usefull for you a dump from the main process? wich kind ?. Yes I 'm using linux, version 2.4.21 from mandrake 9.1 There is a fix in the open source version of 2.0.46 http://www.apache.org/dist/httpd/httpd-2.0.46.tar.gz ...which allows coredumps on Linux when you start httpd as root and code CoreDumpDirectory in httpd.conf. If you start httpd as non-root, it should just work (i.e., you don't need the fix), assuming CoreDumpDirectory points to somewhere like /tmp where the non-root user can create files. Pablo Yaggi wrote: I forgot this in my last post, output from httpd -V Server version: Apache-AdvancedExtranetServer/2.0.46 I don't know what is in this vendor's version of Apache. You might want to talk to them, or try the open source version. Greg
Re: PerChild Error
Pablo Yaggi wrote: No, it was running as less privileged user , and the version Extranet is just somthing mandrake puted there, I'm recompiling mandrakes rpms, maybe there's some patch there that stops the dumps, i'll try to rebuild the source. you might want to have a look at my other post where I talked about prctl(). PerChild might need something like that in order to dump on Linux, if it does its own setuid(). But now I'm trying muxmpm cause somebody told me that perchild it was not working at all, I've heard that too. did you manage to make it work ? haven't tried it, and I don't plan on it in the near future. Greg
Re: PerChild Error
I forgot this in my last post, output from httpd -V Server version: Apache-AdvancedExtranetServer/2.0.46 Server built: Jun 20 2003 04:31:08 Server's Module Magic Number: 20020903:3 Architecture: 32-bit Server compiled with -D APACHE_MPM_DIR=server/mpm/experimental/perchild -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 SINGLE_LISTEN_UNSERIALIZED_ACCEPT -D APR_HAS_OTHER_CHILD -D AP_HAVE_RELIABLE_PIPED_LOGS -D HTTPD_ROOT=/etc/httpd/2.0 -D SUEXEC_BIN=/usr/sbin/apache2-suexec -D DEFAULT_PIDLOG=/var/run/httpd.pid -D DEFAULT_LOCKFILE=/var/run/accept.lock -D DEFAULT_ERRORLOG=logs/error_log -D AP_TYPES_CONFIG_FILE=conf/mime.types -D SERVER_CONFIG_FILE=conf/httpd2.conf Pablo
PerChild Error
Hi, well after the chat about worker hungs..., by the way Bill, Cliff did you check my last post ? the question about the prefork, is it fixable ? besides is prefork using threads ? i installed a server with perchild and this is a strip from my error log: [Fri Jun 20 18:29:52 2003] [notice] child pid 14291 exit signal Segmentation fault (11) [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_lock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_unlock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_lock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_unlock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_lock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_unlock failed. Attempting to shutdown process gracefully. any advice ? this is a strip from my conf, my local domain name server is responding for test.local IfModule perchild.c NumServers 5 StartThreads 5 MinSpareThreads 5 MaxSpareThreads 10 MaxThreadsPerChild 20 MaxRequestsPerChild 0 /IfModule NameVirtualHost * UseCanonicalName Off ChildPerUserID pablo apache 1 VirtualHost * ServerName test.local AssignUserID pablo apache /VirtualHost
Re: PerChild Error
Pablo Yaggi wrote: besides is prefork using threads ? prefork does not use threads. i installed a server with perchild and this is a strip from my error log: [Fri Jun 20 18:29:52 2003] [notice] child pid 14291 exit signal Segmentation fault (11) do you have a coredump? We the backtrace from it if so. otherwise, we can't do squat with these messages. If this is Linux, you should see more text at the end of this message saying that there is a possible coredump. Make sure you have CoreDumpDir /directory/writeable/by/Apache/User in your httpd.conf or it's hard to get coredumps. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_lock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_unlock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_lock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_unlock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_lock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_unlock failed. Attempting to shutdown process gracefully. what kind of locking is your apr using? (hint: bin/httpd -V) Greg
Re: PerChild Error
It doesn't dump anything, i have this CoreDumpDirectory /tmp/ and it dumps nothing there. What I saw is that a new process for the site (user pablo) is being started about 2 seconds all the time and each process logs what I mention before, so I think the process is not even starting in the right way. The main process is starting, because I can stablish a connection with a browser, but the request is never attended. Please let me know how I can log something else or dump the core. I can't open the process with gdb because the process is dieing permantly, is it any usefull for you a dump from the main process? wich kind ?. Yes I 'm using linux, version 2.4.21 from mandrake 9.1 Regards, Pablo [Fri Jun 20 18:29:52 2003] [notice] child pid 14291 exit signal is in the log all the On Friday 20 June 2003 06:35 pm, [EMAIL PROTECTED] wrote: Pablo Yaggi wrote: besides is prefork using threads ? prefork does not use threads. i installed a server with perchild and this is a strip from my error log: [Fri Jun 20 18:29:52 2003] [notice] child pid 14291 exit signal Segmentation fault (11) do you have a coredump? We the backtrace from it if so. otherwise, we can't do squat with these messages. If this is Linux, you should see more text at the end of this message saying that there is a possible coredump. Make sure you have CoreDumpDir /directory/writeable/by/Apache/User in your httpd.conf or it's hard to get coredumps. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_lock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_unlock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_lock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_unlock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_lock failed. Attempting to shutdown process gracefully. [Fri Jun 20 18:29:52 2003] [emerg] (13)Permission denied: apr_proc_mutex_unlock failed. Attempting to shutdown process gracefully. what kind of locking is your apr using? (hint: bin/httpd -V) Greg
