Description of problem: Can not start apache httpd: httpd.worker: Syntax error on line 216 of /opt/jboss-ews-2.1/etc/httpd/conf/httpd.conf: Syntax error on line 2 of /opt/jboss-ews-2.1/etc/httpd/conf.d/mod_snmp.conf: Cannot load /opt/jboss-ews-2.1/etc/httpd/libsnmpcommon.so into server: ld.so.1: httpd.worker: fatal: /opt/jboss-ews-2.1/etc/httpd/libsnmpcommon.so: open failed: No such file or directory There is a bug in mod_snmp.conf There is LoadModule snmpcommon_module libsnmpcommon.so LoadModule snmpagt_module libsnmpmonagt.so and should be LoadModule snmpcommon_module modules/libsnmpcommon.so LoadModule snmpagt_module modules/libsnmpmonagt.so
Its the same for MS Windows
Fixed. This bug became apparent since now the mod_snmp is loaded bz default.
Its not fixed completely There is another problem for Solaris: Syntax error on line 5 of /opt/jboss-ews-2.1/etc/httpd/conf.d/mod_snmp.conf: Failure opening SNMPvar directory mod_snmp.conf: ## Apache SNMP LoadModule snmpcommon_module modules/libsnmpcommon.so LoadModule snmpagt_module modules/libsnmpmonagt.so SNMPConf conf SNMPVar "/opt/jboss-ews-2.1/var/cache/mod_snmp" ## End of apache SNMP It seems postinstall did not create var/cache directories. There is only var/cache/mod_cluster directory Windows is OK.
postinstall creates directories in OS /var/cache not in /opt/jboss-ews-2.1/var/cache
Hmm, seems like regression. I'll fix that so it'll be part of next update together with storeconfig fixes. In the mean time you can just remove the '/opt/jboss-ews-2.1' prefix because the ending mod_snmp.conf will look like that.
Its fix in ER4 Solaris zip but i found another problems with SNMP module: Solaris: ======= 1. from httpd error_log: SNMP: CovalentSNMP/2.3.0 (SNMP) could not be started init_master_agent: Invalid local port (Address already in use) Its because SNMP Solaris daemon from OS is started. I think its default configuration to have SNMP daemon started by default. The solution is to stop OS SNMP Solaris daemon by: /etc/init.d/init.sma stop Note: Its using port 161 for SNMP agent 2. Another Solaris problem in error_log: SNMP: sconfig is not available Windows: ======== 1. from error_log: SNMP: generic logger: Could not log error-info\n We should find the solution.
I think that JON folks should give us the working configuration. The entire mod_snmp and it's load by default is because of their explicit request.
https://community.jboss.org/wiki/MonitoringApacheUsingSNMP
I was tested mod_snmp on Solaris and Windows and it works with some known issues. Httpd with mod_snmp started ok with proper configuration on Solaris and Windows and also snmpwalk return Apache httpd mib values. For mod_snmp httpd monitoring is needed: 1. mod_snmp.conf in conf.d directory (configuration for conf needs to be absolute paths) - attached working example 2. mod_snmp also needs snmpd agent configuration file which is referenced in mod_snmp.conf. So for example conf.d/snmpd/snmpd.conf - also attached working example My suggestion is to change configuration of EWS for mod_snmp, mod_rt (these two modules are for JON monitoring) and also mod_cluster.conf. For all platforms RHEL, Solaris, Windows: 1. Keep the mod_cluster.conf, mod_snmp.conf and mod_rt.conf in conf.d and rename them to mod_cluster.conf.sample, mod_snmp.conf.sample and mod_rt.conf.sample -> Mladen was right, its better to not started these by default, because not all customers need them but just let them sample configurations. 2. During httpd postinstall change the paths for SNMPConf and SNMPVar to absolute paths in conf.s/mod_snmp.conf.sample 3. Create new subdirectory conf.d/snmpd and place snmpd.conf.sample in this dir. 4. For Solaris and Windows - mod_jk.conf.sample and workers.properties.sample should be also placed in conf.d 5. Document it
Created attachment 917118 [details] mod_snmp.conf
Created attachment 917119 [details] snmpd.conf
Mladen, Weinan do you agree ? Is it lot of work for you to do rebuild of ER4 again or simply chaneg it on download.devel ?
MS Windows known isuues: BZ 1118391 - mod_snmp MS Windows known issues Solaris known issues: BZ 1118395 - mod_snmp Solaris known issues
These two bugzillas should be documented as known issues
Patch applied: [weli@dhcp-66-78-87 jboss-ews-el6]$ git diff HEAD^1 postinstall jboss-ews.spec diff --git a/jboss-ews.spec b/jboss-ews.spec index 9fe92f4..357c078 100644 --- a/jboss-ews.spec +++ b/jboss-ews.spec @@ -35,7 +35,7 @@ %define ews_rev 0 %define tc6version 6.0.41 %define tc7version 7.0.54 -%define ews_release 26 +%define ews_release 27 %define tcnativeversion 1.1.30 %define mod_jkversion 1.2.40 @@ -62,6 +62,7 @@ Source6: notes.txt Source5: jboss-ews-patchzip.lst Source7: jboss-ews-patchzip-2.lst %endif +Source90 snmp.conf.sample %if %with signing Source99: sign-unsigned-jars %endif @@ -236,6 +237,7 @@ sed -i -e "s:^LoadModule proxy_balancer_module:#LoadModule proxy_balancer_module #mod_auth_kerb ln -s %{_libdir}/httpd/modules/mod_auth_kerb.so httpd/modules/ ln -s %{_sysconfdir}/httpd/conf.d/auth_kerb.conf httpd/conf.d/ + %ifnarch ppc64 #mod_rt cp -pr %{_libdir}/httpd/modules/mod_rt.so httpd/modules/ @@ -243,6 +245,8 @@ cp -pr %{_sysconfdir}/httpd/conf.d/mod_rt.conf httpd/conf.d/mod_rt.conf.sample #mod_snmp cp -pr %{_libdir}/httpd/modules/{snmpcommon,snmpmonagt,snmpsubagt}.so httpd/modules/ cp -pr %{_sysconfdir}/httpd/conf.d/mod_snmp.conf httpd/conf.d/mod_snmp.conf.sample +mkdir -p httpd/conf.d/snmpd +cp %{SOURCE90} httpd/conf.d/snmpd/ %endif # mod_cluster in tomcat 6 and 7 pushd tomcat6/lib @@ -525,6 +529,11 @@ install -m 644 *.zip $RPM_BUILD_ROOT/%{_javadir}/jbossas-fordev %endif %changelog +* Tue Jul 22 2014 Weinan Li <weli> 2.1.0-27 +- BZ1114988 +- Add conf.d/snmpd/snmpd.conf.sample +- modified mod_snmp.conf.sample + * Mon Jul 21 2014 Permaine Cheung <pcheung> 2.1.0-26 - Rename mod_rt|snmp.conf to mod_rt|snmp.conf.sample (BZ#1117659) diff --git a/postinstall b/postinstall index ad8ec17..3c00de3 100644 --- a/postinstall +++ b/postinstall @@ -43,22 +43,11 @@ if [ -f 'conf.d/mod_cluster.conf' ]; then fi #JBPAPP-9746 -if [ -f 'conf.d/mod_snmp.conf' ]; then +if [ -f 'conf.d/mod_snmp.conf.sample' ]; then mkdir -p $currentDir/var/cache/mod_snmp - sed -i -e "s:SNMPVar /var/cache/mod_snmp:SNMPVar $currentDir/var/cache/mod_snmp:" conf.d/mod_snmp.conf + sed -i -e "s:SNMPVar /var/cache/mod_snmp:SNMPVar $currentDir/var/cache/mod_snmp:" conf.d/mod_snmp.conf.sample fi -#for mod_nss -#start -#if [ ! -e $currentDir/alias/key3.db ]; then -# $currentDir/sbin/gencert $currentDir/alias > $currentDir/alias/install.log 2>&1 -#fi - -# Make sure that the database ownership is setup properly. -#/bin/find $currentDir/alias -user root -name "*.db" -exec /bin/chgrp apache {} \; -#/bin/find $currentDir/alias -user root -name "*.db" -exec /bin/chmod g+r {} \; -#end of mod_nss - #JBPAPP-9381 sed -i -e "s:/var/www:jboss-ews-2.1/httpd/www:g" -e "s:/etc/httpd:jboss-ews-2.1/httpd:g" www/error/noindex.html
Weinan, i think there is still missing: + sed -i -e "s:SNMPConf conf:SNMPConf $currentDir/conf.d/snmpd:" conf.d/mod_snmp.conf.sample
+Source90 snmp.conf.sample should be +Source90 snmpd.conf.sample sorry for that, but we have snmpd/snmpd.conf.sample in Windows and Solaris zips.
Thanks for checking quickly Libor! More patches added and conf file renamed: $ git diff HEAD^1 jboss-ews.spec postinstall diff --git a/jboss-ews.spec b/jboss-ews.spec index 5296808..66bc0fd 100644 --- a/jboss-ews.spec +++ b/jboss-ews.spec @@ -35,7 +35,7 @@ %define ews_rev 0 %define tc6version 6.0.41 %define tc7version 7.0.54 -%define ews_release 27 +%define ews_release 28 %define tcnativeversion 1.1.30 %define mod_jkversion 1.2.40 @@ -62,7 +62,7 @@ Source6: notes.txt Source5: jboss-ews-patchzip.lst Source7: jboss-ews-patchzip-2.lst %endif -Source90: snmp.conf.sample +Source90: snmpd.conf.sample %if %with signing Source99: sign-unsigned-jars %endif @@ -529,6 +529,9 @@ install -m 644 *.zip $RPM_BUILD_ROOT/%{_javadir}/jbossas-fordev %endif %changelog +* Tue Jul 22 2014 Weinan Li <weli> 2.1.0-28 +- More patch for BZ1114988 + * Tue Jul 22 2014 Weinan Li <weli> 2.1.0-27 - BZ1114988 - Add conf.d/snmpd/snmpd.conf.sample diff --git a/postinstall b/postinstall index 3c00de3..8678d23 100644 --- a/postinstall +++ b/postinstall @@ -46,6 +46,7 @@ fi if [ -f 'conf.d/mod_snmp.conf.sample' ]; then mkdir -p $currentDir/var/cache/mod_snmp sed -i -e "s:SNMPVar /var/cache/mod_snmp:SNMPVar $currentDir/var/cache/mod_snmp:" conf.d/mod_snmp.conf.sample + sed -i -e "s:SNMPConf conf:SNMPConf $currentDir/conf.d/snmpd:" conf.d/mod_snmp.conf.sample fi #JBPAPP-9381
verified with CR2 on MS Windows and Solaris