Re: Blank output after 5.8.1 upgrade?

Jeff Boes Thu, 16 Oct 2003 06:01:11 -0700

Stas Bekman wrote:

Jeff Boes wrote:

We moved our webserver from a machine where mod_perl was built under Perl 5.6.1, to a server where it was built under 5.8.1. Now, Perl scripts run but produce no browser output!

You mean a simple script:
print "Content-type: text/plain\n\n";
print "Hello";
doesn't output "Hello"?

You are running under mod_perl 1.0, right? Can we see the output of perl -V? Anything in the error_log?

Yes, that's correct -- even the most basic script produces a blank page. I believe my mod_perl version is "1.27" (see MOD_PERL environment variable in listing below).

Nothing in any log files that I can find. As previously noted, if I insert an open() to my /tmp directory and write to a file there, I can show that the script is actually running.

I've dumped the %ENV hash from such a script:

AUTH_TYPE: Basic DOCUMENT_ROOT: /web/nexcerpt/html GATEWAY_INTERFACE: CGI-Perl/1.1 HTTP_ACCEPT: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,image/jpeg,image/gif;q=0.2,*/*;q=0.1 HTTP_ACCEPT_CHARSET: ISO-8859-1,utf-8;q=0.7,*;q=0.7 HTTP_ACCEPT_ENCODING: gzip,deflate HTTP_ACCEPT_LANGUAGE: en-us,en;q=0.5 HTTP_CONNECTION: keep-alive HTTP_HOST: xservice.nexcerpt.com HTTP_KEEP_ALIVE: 300 HTTP_USER_AGENT: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.5) Gecko/20030925 MOD_PERL: mod_perl/1.26 PATH: /sbin:/usr/sbin:/bin:/usr/bin:/usr/X11R6/bin PERL5LIB: /home/nexcerpt/ QUERY_STRING: REMOTE_ADDR: 64.147.202.1 REMOTE_PORT: 33095 REMOTE_USER: jboes REQUEST_METHOD: GET REQUEST_URI: /hello.pl SCRIPT_FILENAME: /web/nexcerpt/html/hello.pl SCRIPT_NAME: /hello.pl SERVER_ADDR: 64.147.202.13 SERVER_ADMIN: [EMAIL PROTECTED] SERVER_NAME: xservice.nexcerpt.com SERVER_PORT: 80 SERVER_PROTOCOL: HTTP/1.1 SERVER_SIGNATURE: SERVER_SOFTWARE: Apache/1.3.27 (Unix) (Red-Hat/Linux) mod_ssl/2.8.12 OpenSSL/0.9.6b DAV/1.0.3 PHP/4.1.2 mod_perl/1.26 mod_auth_pgsql/0.9.12 mod_throttle/3.1.2

And here's what perl -V produces from the command line (is there a way to do an equivalent thing from within a mod_perl script?):

Summary of my perl5 (revision 5.0 version 8 subversion 1) configuration: Platform: osname=linux, osvers=2.4.18-18.7.xsmp, archname=i686-linux uname='linux xifos.nexcerpt.com 2.4.18-18.7.xsmp #1 smp wed nov 13 19:01:42 est 2002 i686 unknown ' config_args='' hint=recommended, useposix=true, d_sigaction=define usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef useperlio=define d_sfio=undef uselargefiles=define usesocks=undef use64bitint=undef use64bitall=undef uselongdouble=undef usemymalloc=n, bincompat5005=undef Compiler: cc='cc', ccflags ='-fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm', optimize='-O2', cppflags='-fno-strict-aliasing -I/usr/local/include -I/usr/include/gdbm' ccversion='', gccversion='2.96 20000731 (Red Hat Linux 7.3 2.96-113)', gccosandvers='' intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234 d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12 ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8 alignbytes=4, prototype=define Linker and Libraries: ld='cc', ldflags =' -L/usr/local/lib' libpth=/usr/local/lib /lib /usr/lib libs=-lnsl -lndbm -lgdbm -ldl -lm -lcrypt -lutil -lc perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc libc=/lib/libc-2.2.5.so, so=so, useshrplib=false, libperl=libperl.a gnulibc_version='2.2.5' Dynamic Linking: dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynamic' cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'

Characteristics of this binary (from libperl):
 Compile-time options: USE_LARGE_FILES
 Built under linux
 Compiled at Oct  7 2003 09:59:16
 %ENV:
   PERL5LIB="/home/nexcerpt"
 @INC:
   /home/nexcerpt
   /usr/local/lib/perl5/5.8.1/i686-linux
   /usr/local/lib/perl5/5.8.1
   /usr/local/lib/perl5/site_perl/5.8.1/i686-linux
   /usr/local/lib/perl5/site_perl/5.8.1
   /usr/local/lib/perl5/site_perl/5.8.0/i686-linux
   /usr/local/lib/perl5/site_perl/5.8.0
   /usr/local/lib/perl5/site_perl/5.6.1
   /usr/local/lib/perl5/site_perl
   .

--
Jeff Boes                                      vox 269.226.9550 ext 24
Database Engineer                                     fax 269.349.9076
Nexcerpt, Inc.                                 http://www.nexcerpt.com
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Re: Blank output after 5.8.1 upgrade?

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