Tried following:
# /usr/local/cpanel/bin/rebuild_phpconf --current
Available handlers: suphp dso fcgi cgi none
DEFAULT PHP: 5
PHP4 SAPI: none
PHP5 SAPI: fcgi
SUEXEC: enabled
RUID2: not installed
# httpd -V
Server version: Apache/2.4.16 (Unix)
Server built: Nov 29 2015 14:12:10
Cpanel::Easy::Apache v3.32.5 rev9999 +cloudlinux
Server's Module Magic Number: 20120211:47
Server loaded: APR 1.5.2, APR-UTIL 1.5.4
Compiled using: APR 1.5.2, APR-UTIL 1.5.4
Architecture: 64-bit
Server MPM: prefork
threaded: no
forked: yes (variable process count)
Server compiled with....
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses disabled)
-D APR_USE_SYSVSEM_SERIALIZE
-D APR_USE_PTHREAD_SERIALIZE
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D APR_HAS_OTHER_CHILD
-D AP_HAVE_RELIABLE_PIPED_LOGS
-D DYNAMIC_MODULE_LIMIT=256
-D HTTPD_ROOT="/usr/local/apache"
-D SUEXEC_BIN="/usr/local/apache/bin/suexec"
-D DEFAULT_PIDLOG="logs/httpd.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="conf/mime.types"
-D SERVER_CONFIG_FILE="conf/httpd.conf"
You should always use suphp or fcgid for PHP. With DSO module users are not placed in cagefs and you can not use selector.
Most probably after switch you have to run 'cagefsctl --force-update' to put binaries into cagefs inside.