Hi,
I used only Heartbeat package for clustering only the HTTPD daemon. Another software I want to cluster is Oracle Database Express. I red documentation and features and decided I will switch to openais(corosync) and pacemaker as advanced resource manager. I just went trough installation procedure as described at http://www.clusterlabs.org/wiki/Install <http://www.clusterlabs.org/wiki/Install> . I have 2 node cluster and my systems run CentOS 5.4. From added repository it installed Pacemaker: pacemaker i386 1.0.8-5.el5 pacemaker x86_64 1.0.8-5.el5 My libxml2 library is following: libxml2 i386 2.6.26-2.1.2.8 libxml2 x86_64 2.6.26-2.1.2.8 command "grep ERROR: /var/log/messages | grep -v unpack_resources" has following output: Apr 30 07:40:34 tidevfnkv1 cib: [6145]: ERROR: crm_xml_err: XML Error: I/O warning :failed to load external entity "/usr/share/pacemaker/crm-transitional.dtd" Apr 30 07:40:34 tidevfnkv1 cib: [6145]: ERROR: crm_abort: validate_with_dtd: Triggered assert at xml.c:2122 : dtd != NULL Apr 30 07:40:34 tidevfnkv1 cib: [6145]: ERROR: validate_with_dtd: Could not find/parse /usr/share/pacemaker/crm-transitional.dtd Apr 30 07:40:34 tidevfnkv1 pengine: [6152]: ERROR: crm_xml_err: XML Error: I/O warning :failed to load external entity "/usr/share/pacemaker/crm-transitional.dtd" Apr 30 07:40:34 tidevfnkv1 pengine: [6152]: ERROR: crm_abort: validate_with_dtd: Triggered assert at xml.c:2122 : dtd != NULL Apr 30 07:40:34 tidevfnkv1 pengine: [6152]: ERROR: validate_with_dtd: Could not find/parse /usr/share/pacemaker/crm-transitional.dtd Apr 30 07:40:34 tidevfnkv1 pengine: [6152]: ERROR: crm_xml_err: XML Error: I/O warning :failed to load external entity "/usr/share/pacemaker/upgrade06.xsl" Apr 30 07:40:34 tidevfnkv1 pengine: [6152]: ERROR: crm_abort: apply_transformation: Triggered assert at xml.c:2387 : xslt != NULL Apr 30 07:40:34 tidevfnkv1 pengine: [6152]: ERROR: update_validation: Transformation /usr/share/pacemaker/upgrade06.xsl failed Apr 30 07:40:34 tidevfnkv1 pengine: [6152]: ERROR: crm_xml_err: XML Error: I/O warning :failed to load external entity "/usr/share/pacemaker/pacemaker-1.0.rng" Apr 30 07:40:34 tidevfnkv1 pengine: [6152]: ERROR: xmlRelaxNGParse: could not load /usr/share/pacemaker/pacemaker-1.0.rng Apr 30 07:40:34 tidevfnkv1 pengine: [6152]: ERROR: crm_abort: validate_with_relaxng: Triggered assert at xml.c:2215 : rng != NULL Apr 30 07:40:35 tidevfnkv1 pengine: [6152]: ERROR: validate_with_relaxng: Could not find/parse /usr/share/pacemaker/pacemaker-1.0.rng Apr 30 07:40:35 tidevfnkv1 pengine: [6152]: ERROR: cli_config_update: Your current configuration could only be upgraded to pacemaker-0.7... the minimum requirement is pacemaker-1.0. - this is also strange to me. This output still repeats afters some seconds....seems like some issue with schema, all other packages are latest from repo at http://clusterlabs.org/rpm/epel-5/x86_64/ Any idea about how to fix this situation? Many thanks, Ladislav Jech Czech republic
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