/var/lib/glusterd/hooks/1/ is in glusterfs-server 3.13.2-1build1.
This file is owned by root:root, with mode 0o755.
..
/var/lib/glusterd/hooks/1/add-brick/
/var/lib/glusterd/hooks/1/add-brick/post/
/var/lib/glusterd/hooks/1/add-brick/post/disabled-quota-root-xattr-heal.sh
/var/lib/glusterd/hooks/1/add-brick/pre/
/var/lib/glusterd/hooks/1/add-brick/pre/S28Quota-enable-root-xattr-heal.sh
/var/lib/glusterd/hooks/1/create/
/var/lib/glusterd/hooks/1/create/post/
/var/lib/glusterd/hooks/1/create/post/S10selinux-label-brick.sh
/var/lib/glusterd/hooks/1/delete/
/var/lib/glusterd/hooks/1/delete/post/
/var/lib/glusterd/hooks/1/delete/post/S57glusterfind-delete-post
/var/lib/glusterd/hooks/1/delete/pre/
/var/lib/glusterd/hooks/1/delete/pre/S10selinux-del-fcontext.sh
/var/lib/glusterd/hooks/1/gsync-create/
/var/lib/glusterd/hooks/1/gsync-create/post/
/var/lib/glusterd/hooks/1/gsync-create/post/S56glusterd-geo-rep-create-post.sh
/var/lib/glusterd/hooks/1/set/
/var/lib/glusterd/hooks/1/set/post/
/var/lib/glusterd/hooks/1/set/post/S30samba-set.sh
/var/lib/glusterd/hooks/1/set/post/S32gluster_enable_shared_storage.sh
/var/lib/glusterd/hooks/1/start/
/var/lib/glusterd/hooks/1/start/post/
/var/lib/glusterd/hooks/1/start/post/S29CTDBsetup.sh
/var/lib/glusterd/hooks/1/start/post/S30samba-start.sh
/var/lib/glusterd/hooks/1/stop/
/var/lib/glusterd/hooks/1/stop/pre/
/var/lib/glusterd/hooks/1/stop/pre/S29CTDB-teardown.sh
/var/lib/glusterd/hooks/1/stop/pre/S30samba-stop.sh