Installing ISPCP On Ubuntu Lucid x86_64 And Implementing Chroot Per Virtual Host In Apache2

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Submitted by cwmoller (Contact Author) (Forums) on Fri, 2010-10-15 16:40. :: Ubuntu | Apache | Control Panels

Installing ISPCP On Ubuntu Lucid x86_64 And Implementing Chroot Per Virtual Host In Apache2

Install server

Install a basic Ubuntu Lucid x86_64 server by following the first two pages of The Perfect Server - Ubuntu Lucid Lynx (Ubuntu 10.04) [ISPConfig 2] howto.

 

Install ISPCP

Download the ISPCP sources from the official download page. This guide is based on 1.0.6. Extract it, and change into the extracted directory.

tar xf iscp-omega-1.0.6.tar.gz

cd ispcp-omega-1.0.6

cp docs/Ubuntu/ubuntu-packages-karmic docs/Ubuntu/ubuntu-packages-lucid

Edit docs/Ubuntu/ubuntu-packages-lucid, and replace these entries:

libmd5-perl
libmysqlclient15off

with these:

libdigestmd5-perl
libmysqlclient16

Follow the installation steps detailed in docs/Ubuntu/INSTALL. When running ispcp-setup, make sure to select FastCGI. Your default ISPCP system should work at this point, and ps auxf output should look very similar to this:

root     25761  0.0  1.7 138304 36360 ?        Ss   10:56   0:00 /usr/sbin/apache2 -k start
root     25762  0.0  0.0   4096   580 ?        S    10:56   0:00  \_ /bin/sh -c /var/www/ispcp/engine/ispcp-apache-logger -e
root     25764  0.0  0.7  62624 15416 ?        S    10:56   0:00  |   \_ /usr/bin/perl /var/www/ispcp/engine/ispcp-apache-logger -e
root     25763  0.0  0.0   4096   576 ?        S    10:56   0:00  \_ /bin/sh -c /var/www/ispcp/engine/ispcp-apache-logger
root     25765  0.0  0.7  62624 15416 ?        S    10:56   0:00  |   \_ /usr/bin/perl /var/www/ispcp/engine/ispcp-apache-logger
www-data 25766  0.0  1.6 138004 34416 ?        S    10:56   0:00  \_ /usr/sbin/apache2 -k start
www-data 25767  0.0  1.6 138004 34372 ?        S    10:56   0:00  \_ /usr/sbin/fcgi-pm -k start
vu2000   25768  0.0  0.4 147120  8936 ?        Ss   10:56   0:00  |   \_ /usr/bin/php5-cgi
vu2000   25826  0.0  0.7 155448 15156 ?        S    10:56   0:00  |       \_ /usr/bin/php5-cgi
vu2000   25827  0.0  0.1 147120  3788 ?        S    10:56   0:00  |       \_ /usr/bin/php5-cgi
www-data 25769  0.0  1.8 427808 37468 ?        Sl   10:56   0:00  \_ /usr/sbin/apache2 -k start
www-data 25778  0.0  1.7 427688 36796 ?        Sl   10:56   0:00  \_ /usr/sbin/apache2 -k start

 

Compile Custom Suexec Wrapper

Most of this section is based on the excellent post at metaclarity. Download the Apache HTTPd sources from the official download page. This guide is based on 2.2.16.

tar xf httpd-2.2.16.tar.bz2

cd httpd-2.2.16/support

Apply the patches.

--- Makefile.in.old	2009-04-21 09:59:33.000000000 -0400
+++ Makefile.in	2009-04-21 10:04:11.000000000 -0400
@@ -59,9 +59,13 @@
 	$(LINK) $(checkgid_LTFLAGS) $(checkgid_OBJECTS) $(PROGRAM_LDADD)
 
 suexec_OBJECTS = suexec.lo
-suexec: $(suexec_OBJECTS)
+suexec: $(suexec_OBJECTS) suexec-phpfcgi
 	$(LINK) $(suexec_OBJECTS)
 
+suexec-phpfcgi_OBJECTS = suexec-phpfcgi.lo
+suexec-phpfcgi: $(suexec-phpfcgi_OBJECTS)
+	$(LINK) $(suexec-phpfcgi_OBJECTS)
+
 htcacheclean_OBJECTS = htcacheclean.lo
 htcacheclean: $(htcacheclean_OBJECTS)
 	$(LINK) $(htcacheclean_LTFLAGS) $(htcacheclean_OBJECTS) $(PROGRAM_LDADD) 
--- suexec.c	2010-07-12 11:26:29.000000000 +0200
+++ suexec-phpfcgi.c	2010-09-14 10:07:36.581742585 +0200
@@ -259,6 +259,7 @@
     char *cmd;              /* command to be executed    */
     char cwd[AP_MAXPATH];   /* current working directory */
     char dwd[AP_MAXPATH];   /* docroot working directory */
+    char nwd[AP_MAXPATH];   /* after-chroot working dir  */
     struct passwd *pw;      /* password entry holder     */
     struct group *gr;       /* group entry holder        */
     struct stat dir_info;   /* directory info holder     */
@@ -456,7 +457,6 @@
         log_err("cannot run as forbidden uid (%d/%s)\n", uid, cmd);
         exit(107);
     }
-
     /*
      * Error out if attempt is made to execute as root group
      * or as a GID less than AP_GID_MIN.  Tsk tsk.
@@ -466,6 +466,42 @@
         exit(108);
     }
 
+
+    int striplen = strlen (target_homedir);
+
+    char* tlen = strchr(target_homedir, '/');
+    char* hlen = strchr(tlen+1, '/');
+    char* ulen = strchr(hlen+1, '/');
+    char* chroot_dir = strndup(target_homedir, striplen);
+    char* pt = getenv("PATH_TRANSLATED");
+    if (pt != 0) {
+      setenv("PATH_TRANSLATED", pt + (ulen - target_homedir), 1);
+    }
+
+    setenv("DOCUMENT_ROOT", "/", 1);
+
+    if (getcwd(nwd, AP_MAXPATH) == NULL) {
+        log_err("cannot get current working directory (prechroot)\n");
+        exit(111);
+    }
+
+    char* trunc_nwd = strndup("/fcgi", 5);
+
+    if (chdir(chroot_dir)) {
+        log_err("crit: can't chdir to chroot dir (%s)",chroot_dir);
+        exit(121);
+    }
+
+    if (chroot(chroot_dir) != 0) {
+      log_err("emerg: failed to chroot (%s, %s)\n", chroot_dir, cmd);
+      exit(122);
+    }
+
+    if (chdir (trunc_nwd)) {
+        log_err("crit: can't chdir to %s inside chroot %s\n", trunc_nwd, chroot_dir);
+        exit(42);
+    }
+
     /*
      * Change UID/GID here so that the following tests work over NFS.
      *
@@ -498,22 +534,11 @@
         exit(111);
     }
 
-    if (userdir) {
-        if (((chdir(target_homedir)) != 0) ||
-            ((chdir(AP_USERDIR_SUFFIX)) != 0) ||
-            ((getcwd(dwd, AP_MAXPATH)) == NULL) ||
-            ((chdir(cwd)) != 0)) {
-            log_err("cannot get docroot information (%s)\n", target_homedir);
-            exit(112);
-        }
-    }
-    else {
-        if (((chdir(AP_DOC_ROOT)) != 0) ||
-            ((getcwd(dwd, AP_MAXPATH)) == NULL) ||
-            ((chdir(cwd)) != 0)) {
-            log_err("cannot get docroot information (%s)\n", AP_DOC_ROOT);
-            exit(113);
-        }
+    if (((chdir(getenv("DOCUMENT_ROOT"))) != 0) ||
+        ((getcwd(dwd, AP_MAXPATH)) == NULL) ||
+        ((chdir(cwd)) != 0)) {
+        log_err("cannot get docroot information (%s)\n", AP_DOC_ROOT);
+        exit(113);
     }
 
     if ((strncmp(cwd, dwd, strlen(dwd))) != 0) {
@@ -565,7 +590,7 @@
      * Error out if the target name/group is different from
      * the name/group of the cwd or the program.
      */
-    if ((uid != dir_info.st_uid) ||
+/*    if ((uid != dir_info.st_uid) ||
         (gid != dir_info.st_gid) ||
         (uid != prg_info.st_uid) ||
         (gid != prg_info.st_gid)) {
@@ -575,7 +600,7 @@
                 dir_info.st_uid, dir_info.st_gid,
                 prg_info.st_uid, prg_info.st_gid);
         exit(120);
-    }
+    }*/
     /*
      * Error out if the program is not executable for the user.
      * Otherwise, she won't find any error in the logs except for 

patch -p0 < ../../makefile.diff

patch -p0 -o suexec-phpfcgi.c < ../../suexec-phpfcgi.diff

Edit suexec.h:

AP_HTTPD_USER www-data
AP_UID_MIN 2000
AP_GID_MIN 2000
AP_LOG_EXEC "/tmp/suexec.log"
AP_DOC_ROOT "/"

cd ..

configure --prefix=/usr/lib/apache2 --enable-suexec --enable-mods-shared=most --enable-so --with-mpm=worker --with-included-apr

cd support

make suexec

Install the new suexec wrapper.

cp suexec-phpfcgi /usr/lib/apache2

chown .www-data /usr/lib/apache2/suexec-phpfcgi

chmod 4751 /usr/lib/apache2/suexec-phpfcgi

Update /etc/apache2/modules-enables/fastcgi_ispcp.conf to use the new wrapper:

FastCgiWrapper /usr/lib/apache2/suexec-phpfcgi

 

Create Chroot For Virtual Hosts

The following is a sufficient chroot. I put mine in /usr/local/skel. You may want to add more/other timezones.

.
\__ bin -> chroot/bin
\__ chroot
|   \__ bin
|   |   \__ dash
|   |   \__ sh -> dash
|   \__ dev
|   |   \__ null
|   |   \__ urandom
|   |   \__ zero
|   \__ etc
|   |   \__ group
|   |   \__ host.conf
|   |   \__ hosts
|   |   \__ locale.alias
|   |   \__ localtime
|   |   \__ nsswitch.conf
|   |   \__ passwd
|   |   \__ php5
|   |   |   \__ cgi
|   |   |   |   \__ conf.d -> ../conf.d
|   |   |   |   \__ php.ini
|   |   |   \__ conf.d
|   |   |   |   \__ adodb.ini
|   |   |   |   \__ gd.ini
|   |   |   |   \__ mcrypt.ini
|   |   |   |   \__ mysqli.ini
|   |   |   |   \__ mysql.ini
|   |   |   |   \__ pdo.ini
|   |   |   |   \__ pdo_mysql.ini
|   |   |   \__ php.ini
|   |   \__ protocols
|   |   \__ resolv.conf
|   |   \__ services
|   \__ lib
|   |   \__ ld-2.11.1.so
|   |   \__ ld-linux-x86-64.so.2 -> ld-2.11.1.so
|   |   \__ libbz2.so.1 -> libbz2.so.1.0.4
|   |   \__ libbz2.so.1.0 -> libbz2.so.1.0.4
|   |   \__ libbz2.so.1.0.4
|   |   \__ libc-2.11.1.so
|   |   \__ libcom_err.so.2 -> libcom_err.so.2.1
|   |   \__ libcom_err.so.2.1
|   |   \__ libcrypt-2.11.1.so
|   |   \__ libcrypto.so.0.9.8
|   |   \__ libcrypt.so.1 -> libcrypt-2.11.1.so
|   |   \__ libc.so.6 -> libc-2.11.1.so
|   |   \__ libdl-2.11.1.so
|   |   \__ libdl.so.2 -> libdl-2.11.1.so
|   |   \__ libexpat.so.1 -> libexpat.so.1.5.2
|   |   \__ libexpat.so.1.5.2
|   |   \__ libgcc_s.so.1
|   |   \__ libkeyutils-1.2.so
|   |   \__ libkeyutils.so.1 -> libkeyutils-1.2.so
|   |   \__ libm-2.11.1.so
|   |   \__ libm.so.6 -> libm-2.11.1.so
|   |   \__ libncurses.so.5 -> libncurses.so.5.7
|   |   \__ libncurses.so.5.7
|   |   \__ libnsl-2.11.1.so
|   |   \__ libnsl.so.1 -> libnsl-2.11.1.so
|   |   \__ libnss_dns-2.11.1.so
|   |   \__ libnss_dns.so.2 -> libnss_dns-2.11.1.so
|   |   \__ libnss_files-2.11.1.so
|   |   \__ libnss_files.so.2 -> libnss_files-2.11.1.so
|   |   \__ libnss_nis-2.11.1.so
|   |   \__ libnss_nis.so.2 -> libnss_nis-2.11.1.so
|   |   \__ libpam.so.0 -> libpam.so.0.82.2
|   |   \__ libpam.so.0.82.2
|   |   \__ libpcre.so.3 -> libpcre.so.3.12.1
|   |   \__ libpcre.so.3.12.1
|   |   \__ libpng12.so.0 -> libpng12.so.0.42.0
|   |   \__ libpng12.so.0.42.0
|   |   \__ libpthread-2.11.1.so
|   |   \__ libpthread.so.0 -> libpthread-2.11.1.so
|   |   \__ libresolv-2.11.1.so
|   |   \__ libresolv.so.2 -> libresolv-2.11.1.so
|   |   \__ librt-2.11.1.so
|   |   \__ librt.so.1 -> librt-2.11.1.so
|   |   \__ libselinux.so.1
|   |   \__ libssl.so.0.9.8
|   |   \__ libz.so.1 -> libz.so.1.2.3.3
|   |   \__ libz.so.1.2.3.3
|   \__ lib64 -> lib
|   \__ usr
|       \__ bin
|       |   \__ php5-cgi
|       \__ lib
|       |   \__ apache2
|       |   |   \__ logs -> /var/log/apache2
|       |   \__ gconv
|       |   |   \__ gconv-modules
|       |   |   \__ gconv-modules.cache
|       |   \__ libdb-4.8.so
|       |   \__ libfontconfig.so.1 -> libfontconfig.so.1.4.4
|       |   \__ libfontconfig.so.1.4.4
|       |   \__ libfreetype.so.6 -> libfreetype.so.6.3.22
|       |   \__ libfreetype.so.6.3.22
|       |   \__ libgd.so.2 -> libgd.so.2.0.0
|       |   \__ libgd.so.2.0.0
|       |   \__ libgssapi_krb5.so.2 -> libgssapi_krb5.so.2.2
|       |   \__ libgssapi_krb5.so.2.2
|       |   \__ libjpeg.so.62 -> libjpeg.so.62.0.0
|       |   \__ libjpeg.so.62.0.0
|       |   \__ libk5crypto.so.3 -> libk5crypto.so.3.1
|       |   \__ libk5crypto.so.3.1
|       |   \__ libkrb5.so.3 -> libkrb5.so.3.3
|       |   \__ libkrb5.so.3.3
|       |   \__ libkrb5support.so.0 -> libkrb5support.so.0.1
|       |   \__ libkrb5support.so.0.1
|       |   \__ libmcrypt.so.4 -> libmcrypt.so.4.4.8
|       |   \__ libmcrypt.so.4.4.8
|       |   \__ libmysqlclient_r.so.16 -> libmysqlclient_r.so.16.0.0
|       |   \__ libmysqlclient_r.so.16.0.0
|       |   \__ libt1.so.5 -> libt1.so.5.1.2
|       |   \__ libt1.so.5.1.2
|       |   \__ libX11.so.6 -> libX11.so.6.3.0
|       |   \__ libX11.so.6.3.0
|       |   \__ libXau.so.6 -> libXau.so.6.0.0
|       |   \__ libXau.so.6.0.0
|       |   \__ libxcb.so.1 -> libxcb.so.1.1.0
|       |   \__ libxcb.so.1.1.0
|       |   \__ libXdmcp.so.6 -> libXdmcp.so.6.0.0
|       |   \__ libXdmcp.so.6.0.0
|       |   \__ libxml2.so.2 -> libxml2.so.2.7.6
|       |   \__ libxml2.so.2.7.6
|       |   \__ libXpm.so.4 -> libXpm.so.4.11.0
|       |   \__ libXpm.so.4.11.0
|       |   \__ locale
|       |   |   \__ en_ZA.utf8
|       |   |       \__ LC_ADDRESS
|       |   |       \__ LC_COLLATE
|       |   |       \__ LC_CTYPE
|       |   |       \__ LC_IDENTIFICATION
|       |   |       \__ LC_MEASUREMENT
|       |   |       \__ LC_MESSAGES
|       |   |       |   \__ SYS_LC_MESSAGES
|       |   |       \__ LC_MONETARY
|       |   |       \__ LC_NAME
|       |   |       \__ LC_NUMERIC
|       |   |       \__ LC_PAPER
|       |   |       \__ LC_TELEPHONE
|       |   |       \__ LC_TIME
|       |   \__ php5
|       |   |   \__ 20090626
|       |   |       \__ adodb.so
|       |   |       \__ gd.so
|       |   |       \__ mcrypt.so
|       |   |       \__ mysqli.so
|       |   |       \__ mysql.so
|       |   |       \__ pdo_mysql.so
|       |   |       \__ pdo.so
|       |   \__ sendmail -> ../sbin/mini_sendmail
|       \__ lib64 -> lib
|       \__ sbin
|       |   \__ mini_sendmail
|       |   \__ sendmail -> mini_sendmail
|       \__ share
|           \__ locale
|           |   \__ locale.alias -> /etc/locale.alias
|           \__ zoneinfo
|               \__ Africa
|                   \__ Johannesburg
\__ dev -> chroot/dev
\__ etc -> chroot/etc
\__ fcgi
|   \__ php5-fcgi-starter
\__ lib -> chroot/lib
\__ lib64 -> chroot/lib64
\__ logs
\__ tmp
\__ usr -> chroot/usr
\__ var
    \__ lib
    |   \__ apache2
    |   \__ php5
    \__ log
    |   \__ apache2 -> /logs
    \__ www
        \__ virtual

 

Complete Chroot

For every virtual host created, the chroot as defined above should be copied into the home directory of the virtual host. For example, for virtual host example.org which runs as user vu2009, the following applies:

cp -a /usr/local/skel/* ~vu2009/

Additionally, the following is required:

mkdir -p ~vu2009/var/www/virtual/example.org

cd ~vu2009/var/www/virtual/example.org && ln -s /htdocs htdocs

Also create a link for every subdomain. If you have subdomains one.example.org and two.example.org, also do:

cd ~vu2009/var/www/virtual/example.org && ln -s /one one

cd ~vu2009/var/www/virtual/example.org && ln -s /two two

Note that these symlinks appear broken. They do, however, work when you take into consideration that ~vu2009 is the root of the chroot'ed filesystem.

 

Update ispcp.conf

Make sure database is using TCP (127.0.0.1), not sockets (localhost). The chroot'ed vhost will not be able to see the MySQL socket which resides in /var/run/mysqld/mysqld.sock.

DATABASE_HOST = 127.0.0.1

 

Update Master Virtual Host

Need a bit more symlink magic.

cd /var/www/fcgi/master && ln -s / fcgi

cp -a /var/www/fcgi/master /var/www/ispcp/gui/var/www/fgci/master

Update /etc/passwd, change vu2000 (master user) home directory to /var/www/ispcp/gui. The control panel needs to be able to read the main config. This file never changes, so a direct copy is fine.

cp /etc/ispcp/ispcp.conf /var/www/ispcp/gui/etc/ispcp/

cd /var/www/ispcp/gui/var/www/ispcp/ && ln -s / gui

 

Chroot Apache2

mkdir /var/www-jail

Update /etc/apache2/httpd.conf:

ChRootDir /var/www-jail

mkdir -p /var/www-jail/var/www

mount -o bind /var/www /var/www-jail/var/www

Once chroot'ed, the FastCGI sockets need to be available to the vhosts.

mount -o bind /var/lib/apache2/fastcgi /var/www-jail/var/lib/apache2/fastcgi

Make these mounts permanent by adding to /etc/fstab:

/var/www /var/www-jail/var/www none bind
/var/lib/apache2/fastcgi /var/www-jail/var/lib/apache2/fastcgi none bind

 

Sendmail Mini

Postfix has a LOT of dependencies, so it's preferable to not include it in the vhosts' chroots. Instead, download and compile mini_sendmail from here. It wouldn't work statically linked, but it requires no more libs than we already have in the chroots, so it's fine. Edit the Makefile:

CFLAGS =      -g
#LDFLAGS =    -s -static
LDFLAG =      -g

We don't give nearly enough information for the wrapper to be happy, so we change it somewhat:

--- mini_sendmail-1.3.6/mini_sendmail.c 2005-06-29 19:37:15.000000000 +0200
+++ mini_sendmail-1.3.6-mine/mini_sendmail.c    2010-10-01 15:12:40.947187053 +0200
@@ -30,7 +30,7 @@
 ** don't want the features you can undef the symbols; some of them mean
 ** a significant savings in executable size.
 */
-#define DO_RECEIVED    /* whether to add a "Received:" header */
+#undef DO_RECEIVED     /* whether to add a "Received:" header */
 #define DO_GETPWUID    /* whether to try a getpwuid() if getlogin() fails */
 #define DO_MINUS_SP    /* whether to implement the -s and -p flags */
 #define DO_DNS         /* whether to do a name lookup on -s, or just IP# */
@@ -122,6 +122,8 @@
        {
        if ( strncmp( argv[argn], "-f", 2 ) == 0 && argv[argn][2] != '\0' )
            fake_from = &(argv[argn][2]);
+       else if ( strncmp( argv[argn], "-f", 2) == 0)
+           fake_from = &(argv[++argn][0]);
        else if ( strcmp( argv[argn], "-t" ) == 0 )
            parse_message = 1;
 #ifdef DO_MINUS_SP
@@ -145,33 +147,32 @@
        ++argn;
        }
-    username = getlogin();
-    if ( username == (char*) 0 )
-       {
+    if ( fake_from == (char*) 0 ) {
+       username = getlogin();
+       if ( username == (char*) 0 ) {
 #ifdef DO_GETPWUID
-       struct passwd* pw = getpwuid( getuid() );
-       if ( pw == (struct passwd*) 0 )
-           {
-           (void) fprintf( stderr, "%s: can't determine username\n", argv0 );
-           exit( 1 );
+           struct passwd* pw = getpwuid( getuid() );
+           if ( pw == (struct passwd*) 0 ) {
+               (void) fprintf( stderr, "%s: can't determine username\n", argv0 );
+               exit( 1 );
            }
-       username = pw->pw_name;
+           username = pw->pw_name;
 #else /* DO_GETPWUID */
-       (void) fprintf( stderr, "%s: can't determine username\n", argv0 );
-       exit( 1 );
+           (void) fprintf( stderr, "%s: can't determine username\n", argv0 );
+           exit( 1 );
 #endif /* DO_GETPWUID */
        }
-
-    if ( gethostname( hostname, sizeof(hostname) - 1 ) < 0 )
-       show_error( "gethostname" );
-
-    if ( fake_from == (char*) 0 )
        (void) snprintf( from, sizeof(from), "%s@%s", username, hostname );
-    else
+    } else {
        if ( strchr( fake_from, '@' ) == (char*) 0 )
            (void) snprintf( from, sizeof(from), "%s@%s", fake_from, hostname );
        else
            (void) snprintf( from, sizeof(from), "%s", fake_from );
+    }
+
+    if ( gethostname( hostname, sizeof(hostname) - 1 ) < 0 )
+       show_error( "gethostname" );
+
     /* Strip off any angle brackets in the from address. */
     while ( from[0] == '<' )

make

mkdir -p /usr/local/skel/usr/sbin/

cp mini_sendmail /usr/local/skel/usr/sbin/

cd /usr/local/skel/usr/sbin/

ln -s mini_sendmail sendmail

 

Test

Create a couple of virtual hosts and see whether PHP runs. If all goes well, ps auxf output should look very similar to:

root     25761  0.0  1.7 138304 36360 ?        Ss   10:56   0:00 /usr/sbin/apache2 -k start
root     25762  0.0  0.0   4096   580 ?        S    10:56   0:00  \_ /bin/sh -c /var/www/ispcp/engine/ispcp-apache-logger -e
root     25764  0.0  0.7  62624 15424 ?        S    10:56   0:00  |   \_ /usr/bin/perl /var/www/ispcp/engine/ispcp-apache-logger -e
root     25763  0.0  0.0   4096   576 ?        S    10:56   0:00  \_ /bin/sh -c /var/www/ispcp/engine/ispcp-apache-logger
root     25765  0.0  0.7  62624 15452 ?        S    10:56   0:00  |   \_ /usr/bin/perl /var/www/ispcp/engine/ispcp-apache-logger
www-data 25766  0.0  1.6 138004 34416 ?        S    10:56   0:00  \_ /usr/sbin/apache2 -k start
www-data 25767  0.0  1.6 138004 34440 ?        S    10:56   0:00  \_ /usr/sbin/fcgi-pm -k start
vu2000   25768  0.0  0.4 147120  8936 ?        Ss   10:56   0:00  |   \_ /usr/bin/php5-cgi
vu2000   25826  0.0  0.7 155448 15332 ?        S    10:56   0:00  |   |   \_ /usr/bin/php5-cgi
vu2000   25827  0.0  0.7 155192 14984 ?        S    10:56   0:00  |   |   \_ /usr/bin/php5-cgi
vu2007   11282  0.0  0.3 124356  7968 ?        Ss   15:16   0:00  |   \_ /usr/bin/php5-cgi
vu2007   11284  0.1  0.5 129676 11560 ?        S    15:16   0:00  |   |   \_ /usr/bin/php5-cgi
vu2007   11285  0.1  0.5 131340 11756 ?        S    15:16   0:00  |   |   \_ /usr/bin/php5-cgi
vu2058   11292  1.0  0.3 124356  7972 ?        Ss   15:17   0:00  |   \_ /usr/bin/php5-cgi
vu2058   11294 13.0  1.3 145292 27836 ?        S    15:17   0:00  |       \_ /usr/bin/php5-cgi
vu2058   11295  0.0  0.1 124356  3512 ?        S    15:17   0:00  |       \_ /usr/bin/php5-cgi
www-data 25769  0.0  1.8 428520 38416 ?        Sl   10:56   0:00  \_ /usr/sbin/apache2 -k start
www-data 25778  0.0  1.8 428356 38008 ?        Sl   10:56   0:00  \_ /usr/sbin/apache2 -k start

Useful debugging tools include strace'ing the FastCGI Process Manager (PID 25767 in output above) if the vhost won't startup:

strace -ff -p 25767

Also, check the output in /tmp/suexec.log. Strace'ing the vhost's own processes is useful if they start up, but aren't outputting what you want to see (eg. for vu2058 in output above):

strace -ff -p 11292 -p 11294 -p 11295


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