First install Squid
yum -y install Squid
configuration file /etc/squid/squid.conf
vim /etc/squid/squid.conf
Profiles see above
start squid after changing for the better
systemctl start squid
then there is a problem
starting to see the emergence of this
just look at the error log squid's
error log file path /var/log/squid/squid.out
Open results log to see is
this is question authority, then give permission to
chmod -R 777 / dev / shm
given complete authority after the start squid
which is not being given squid starts successfully