CentOS Pits Notes (i)

The first time you use the CentOS installation software, when you configure the binary package's./configure (./configure is the first step in the source code installation, the main role is to configure the software to be installed,) Error:
warning:failed to AutoDetect C compiler version (CC=GCC)

Solution: http://www.cyberciti.biz/faq/centos-rhel-7-redhat-linux-install-gcc-compiler-development-tools/

warning:failed to AutoDetect C compiler version (CC=GCC)

FIX: # yum install gcc gcc-c++ autoconf automake

Unable to connect with local visualizer when installing MongoDB

Solution: http://www.mamicode.com/info-detail-989649.html

Change port, turn off firewall

what has become of the CentOS 7 firewall

Firewall
Systemctl Start firewalld.service# Startup firewall
Systemctl Stop firewalld.service# stops firewall

Systemctl Disable firewalld.service# disable firewall boot boot
#Removed Symlink/etc/systemd/system/dbus-org.fedoraproject.firewalld1.service.

Chase Answer

Change into iptables
Firewall
Systemctl Start Iptables.service

CentOS Pits Notes (i)