When a resource agent supports a parameter designed to hold the name of a binary (such as a daemon, or a client utility for querying status), then that parameter should honor the PATH environment variable. Do not supply full paths. Thus, the following approach:

# Good example -- do it this way
OCF_RESKEY_frobnicate_default="frobnicate"
: ${OCF_RESKEY_frobnicate="${OCF_RESKEY_frobnicate_default}"}

is much preferred over specifying a full path, as shown here:

# Bad example -- avoid if you can
OCF_RESKEY_frobnicate_default="/usr/local/sbin/frobnicate"
: ${OCF_RESKEY_frobnicate="${OCF_RESKEY_frobnicate_default}"}

This rule holds for defaults, as well.