Thursday, April 30, 2015

Checking all modules configured in OHS

That's something I've being looking for since I started working with OHS (a cousin of Apache web server in the case you don't know it).

Apache happily will tell you the modules it has running with by usage of apachectl (or httpd -M depending on the distribution you're using).

Well, that's not that easy for OHS, at least not while you're in the shell. Based on a tip that I found about /proc (see details here) I wrote this little Bash script for OHS 11g:



if [ -z $PID -o -z $full_path ]
    echo <<BLOCK
Usage: <PID> <path to httpd>

xargs --null --max-args=1 echo export < /proc/${PID}/environ > "${temp_file}"
source "$temp_file"
"${full_path}" -M
rm -v "$temp_file"

Then I call the shell script passing the PID of a running process of OHS and the complete pathname to the httpd.worker process (probably I should try to fetch this information from /proc too). Here is a sample of the output:

bash-3.2$ ./ 28377 /foobar/ias/product/OHS/ohs/bin/httpd.worker
Loaded Modules:
core_module (static)
mpm_worker_module (static)
http_module (static)
so_module (static)
oralog_module (static)
ohs_module (static)
ora_audit_module (static)
file_cache_module (shared)
vhost_alias_module (shared)
env_module (shared)
log_config_module (shared)
mime_magic_module (shared)
mime_module (shared)
negotiation_module (shared)
status_module (shared)
info_module (shared)
include_module (shared)
autoindex_module (shared)
dir_module (shared)
cgi_module (shared)
asis_module (shared)
imagemap_module (shared)
actions_module (shared)
speling_module (shared)
userdir_module (shared)
alias_module (shared)
authz_host_module (shared)
auth_basic_module (shared)
authz_user_module (shared)
authn_file_module (shared)
authn_anon_module (shared)
authn_dbm_module (shared)
proxy_module (shared)
proxy_http_module (shared)
proxy_ftp_module (shared)
proxy_connect_module (shared)
proxy_balancer_module (shared)
cern_meta_module (shared)
expires_module (shared)
headers_module (shared)
usertrack_module (shared)
unique_id_module (shared)
setenvif_module (shared)
context_module (shared)
rewrite_module (shared)
onsint_module (shared)
weblogic_module (shared)
plsql_module (shared)
swe_module (shared)
Syntax OK
«/tmp/tmp.hKZiBm6589» deleted

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