Mono (mod_mono) & Apache (httpd) on Fedora 10: failing to start correctly

Question

Hi

It seems I am one of the few trying to get Mono's mod_mono to run on httpd on Fedora 10.

Mono is installed and the httpd is configured to use mod_mono.conf

But when I do this:

service httpd start

I get this error:

Starting httpd: [crit] (13)Permission denied: 
Failed to attach to existing dashboard,
and removing dashboard file '/var/run/mod_mono_dashboard_XXGLOBAL_1' failed 
(Permission denied).

When I do this:

xsp

I get this error:

At System.OutOfMemoryException:.ctor (string), offset 0x18
Addr: 0x7f8e73d6e150
Callee: System.SystemException:.ctor (string)
**
ERROR:tramp-amd64.c:99:mono_arch_patch_callsite: code should not be reached
Stacktrace:

  at System.OutOfMemoryException..ctor (string) <0xffffffff>
  at System.OutOfMemoryException..ctor (string) <0x00018>
  at (wrapper runtime-invoke) System.Object.runtime_invoke_void__this___string (object,intptr,intptr,intptr) <0xffffffff>

Native stacktrace:

        /usr/lib64/libmono.so.0 [0x34f1a76812]
        /lib64/libpthread.so.0 [0x315180f0f0]
        /lib64/libc.so.6(gsignal+0x35) [0x3150c32f05]
        /lib64/libc.so.6(abort+0x183) [0x3150c34a73]
        /lib64/libglib-2.0.so.0(g_assertion_message+0x113) [0x34f125d7f3]
        /usr/lib64/libmono.so.0 [0x34f1a9e7a8]
        /usr/lib64/libmono.so.0 [0x34f1a7d080]
        [0x7f8e741d016e]

Debug info from gdb:


=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

Aborted

Linux version:

Fedora release 10 (Cambridge)

Apache (httpd) version:

Server version: Apache/2.2.11 (Unix)
Server built:   Mar  6 2009 09:12:52
Server's Module Magic Number: 20051115:21
Server loaded:  APR 1.3.3, APR-Util 1.3.4
Compiled using: APR 1.3.3, APR-Util 1.3.4
Architecture:   64-bit
Server MPM:     Prefork
  threaded:     no
    forked:     yes (variable process count)
Server compiled with....
 -D APACHE_MPM_DIR="server/mpm/prefork"
 -D APR_HAS_SENDFILE
 -D APR_HAS_MMAP
 -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
 -D APR_USE_SYSVSEM_SERIALIZE
 -D APR_USE_PTHREAD_SERIALIZE
 -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
 -D APR_HAS_OTHER_CHILD
 -D AP_HAVE_RELIABLE_PIPED_LOGS
 -D DYNAMIC_MODULE_LIMIT=128
 -D HTTPD_ROOT="/etc/httpd"
 -D SUEXEC_BIN="/usr/sbin/suexec"
 -D DEFAULT_PIDLOG="logs/httpd.pid"
 -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
 -D DEFAULT_LOCKFILE="logs/accept.lock"
 -D DEFAULT_ERRORLOG="logs/error_log"
 -D AP_TYPES_CONFIG_FILE="conf/mime.types"
 -D SERVER_CONFIG_FILE="conf/httpd.conf"

Mono version is 2.4 and Mono -V gives me this:

Mono JIT compiler version 2.0.1 (tarball)
Copyright (C) 2002-2008 Novell, Inc and Contributors. www.mono-project.com
        TLS:           __thread
        GC:            Included Boehm (with typed GC)
        SIGSEGV:       altstack
        Notifications: epoll
        Architecture:  amd64
        Disabled:      none

Please help?

Thanks.

Answer 1

The first error you're getting is a known issue that shouldn't affect you. See this post.

As for the second error, shouldn't you be using "xsp2" instead of just "xsp"?

If that doesn't work, I would suggest you rather just try and install the latest Mono build from source. There are instructions here for Ubuntu, but it should be similar enough for you to follow.

Answer 2

I have tried to install again mono, mod_mono, xsp form distribution, then from source using 2.2, 2.4 and svn.

The problem is with the kernel 2.6.24-23-xen present on both servers. It has a bug that has been fixed in the following versions . The problem is the 64bit XEN kernel does not honour the MAP_32BIT flag.

And to add insult to injury, i cannot upgrade the kernels because it's a VPS and i cannot install kernels.