When upgrading from mysql to percona, error #1286 got out - Unknown storage engine 'InnoDB'

Question

MySQL

For some reason, there is also no innidb
MyISAM MyISAM storage engine
MRG_MYISAM Collection of identical MyISAM tables
CSV CSV storage engine
BLACKHOLE /dev/null storage engine (anything you write to it disappears)
MEMORY Hash based, stored in memory, useful for temporary tables
PERFORMANCE_SCHEMA Performance Schema
ARCHIVE Archive storage engine
FEDERATED Federated MySQL storage engine

updated in centos 5.7, updated from standard mysql 5.0 to percona server 5.5 via repository.
the transition guide says that you must first remove mysql, and then install percona and all databases will be picked up, but on all innodb databases, error # 1286 comes out - Unknown storage engine 'InnoDB'

Answer 1

Check if /etc/my.cnf (in centos, it seems to be there) does not have a skip-innodb line? If yes, then comment it out.