/etc/squid/cachemgr.conf is in squid-cgi 3.4.8-6+deb8u5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 | # This file controls which servers may be managed by
# the cachemgr.cgi script
#
# The file consists of one server per line on the format
# hostname:port description
#
# Specifying :port is optional. If not specified then
# the default proxy port is assumed. :* or :any matches
# any port on the target server.
#
# hostname is matched using shell filename matching, allowing
# * and other shell wildcards.
localhost
|