Is there any component that makes Splunk ES tick, which isn't inside the directory etc/apps?
It depends on what you mean. Let me try to explain:
Short answer
ES is indeed composed of a series of apps. In that sense, it is indeed within etc/apps.
Long answer
There are some times in which ES creates files outside of etc/apps. Some examples include:
It is also important to note that apps are sometimes placed outside of etc/apps (for example with apps are placed in the slave-apps directory on indexer clusters).
It depends on what you mean. Let me try to explain:
Short answer
ES is indeed composed of a series of apps. In that sense, it is indeed within etc/apps.
Long answer
There are some times in which ES creates files outside of etc/apps. Some examples include:
It is also important to note that apps are sometimes placed outside of etc/apps (for example with apps are placed in the slave-apps directory on indexer clusters).