i am installing opennms: [root@jhxz OpenNMS]# rpm -ivh opennms-1.2.8-1_rhl8.i386.rpm opennms-webapp-1.2.8-1_rhl8.i386.rpm warning: opennms-1.2.8-1_rhl8.i386.rpm: V3 DSA signature: NOKEY, key ID 4c4cbbd9 error: Failed dependencies: postgresql-server >= 7.2 is needed by opennms-1.2.8-1_rhl8 Suggested resolutions: postgresql-server-7.2.2-1.i386.rpm [root@jhxz OpenNMS]# it seems that postgresql-server is requried for me to install opennms I ask my system what post are in: [root@jhxz root]# rpm -qa | grep stgr postgresql-python-7.2.2-1 postgresql-odbc-7.2.2-1 postgresql-perl-7.2.2-1 postgresql-devel-7.2.2-1 postgresql-libs-7.2.2-1 postgresql-jdbc-8.0.8-1PGDG postgresql-tcl-7.2.2-1 qt-PostgreSQL-3.0.5-17 [root@jhxz root]# no postgresql-server here, and then i google postgresql-server and found no 7.2.2 downloadable. i download a postgresql-server-7.3.14-1PGDG.i686.rpm and install it: [root@jhxz postgresql]# rpm -ivh postgresql-server-7.3.14-1PGDG.i686.rpm warning: postgresql-server-7.3.14-1PGDG.i686.rpm: V3 DSA signature: NOKEY, key ID 748f7d0e error: Failed dependencies: libcrypto.so.4 is needed by postgresql-server-7.3.14-1PGDG libpq.so.3 is needed by postgresql-server-7.3.14-1PGDG libssl.so.4 is needed by postgresql-server-7.3.14-1PGDG postgresql = 7.3.14 is needed by postgresql-server-7.3.14-1PGDG [root@jhxz postgresql]# So many softs are required! and among them is postgresql7.3.14, so i could only install postgresql-server-7.2.2-1.i386.rpm to work with my postgresql7.2.2-1, nothing else can do. Question 1: where can i download postgresql-server-7.2.2-1.i386.rpm or srpm? Question 2: do i really need postgresql-server-7.2.2? if not, could i force opennms to be installed with the following command? rpm -ivh -nodeps opennms-1.2.8-1_rhl8.i386.rpm opennms-webapp-1.2.8-1_rhl8.i386.rpm