Unnecessary CentOS Services on a VM.

When running CentOS inside a VM, there are a number of services you get that are not needed. I found the following services that I ended up disabling.

service smartd stop && chkconfig smartd off
service avahi-daemon stop && chkconfig avahi-daemon off
service cups stop && chkconfig cups off
service autofs stop && chkconfig autofs off
service iscsid stop && chkconfig iscsid off
service iscsi stop && chkconfig iscsi off
service bluetooth stop && chkconfig bluetooth off
service kudzu stop && chkconfig kudzu off
service mdmonitor stop && chkconfig mdmonitor off
service hidd stop && chkconfig hidd off
service haldaemon stop && chkconfig haldaemon off
service gpm stop && chkconfig gpm off
service auditd stop && chkconfig auditd off
service cpuspeed stop && chkconfig cpuspeed off
service messagebus stop && chkconfig messagebus off
service pcscd stop && chkconfig pcscd off

These do things like manage devices or file systems. Things a VM won’t need done. This stopped about 20 processes and freed up a few megabytes of memory. Every little bit helps when you run tens or hundreds of VMs.