CentOS7 network configuration and service management

1. during The VmwareWorkstation10.2 test, some physical machines may fail to recognize the M Nic, the name of the NIC device that can normally identify the Centos7 system of the virtual Nic has changed. For more information, see the name of the network device under CentOS7, there is no need to replace it with a traditional method of identifying names, so you must be brave enough to accept new knowledge ~

1. configure the network During the Vmware Workstation10.2 test, it was found that some physical machines could not recognize the M Nic properly, but changed to the M Nic to test that the virtual Nic could be recognized normally. The NIC device name of CentOS 7 has changed. for details, refer to the network device name in CentOS 7. I personally feel that since I have learned a new system, I do not need to change it to a traditional method of identifying the network card, be brave enough to accept new knowledge ~ 1. modify the network configuration by editing the file Vim/etc/sysconfig/network-scripts/ifcfg-eno16777736 HWADDR = 00: 0c: 29: 14: 34: 51 TYPE = Ethernet BOOTPROTO = static DEFROUTE = yes PEERDNS = yes PEERROUTES = yes USERCTL = no NM_CONTROLLED = no 20174_failure_fatal = no IPV6INIT = yes IPV6_AUTOCONF = yes Required 6_defroute = yes IPV6_PEERDNS = yes 20176_peerroutes = yes 20176_failure_fatal = no NAME = eno16777736 ONBOOT = yes IPADDR = 192.168.117.128 NETMASK = 255.255.255.0 GATEWAY = 192.168.117.2 DNS1 = 192.168.117.2 Key configurations: TYPE = Ethernet BOOTPROTO = static NAME = eno16777736 ONBOOT = yes IPADDR = 192.168.117.128 NETMASK = 255.255.255.0 GATEWAY = 192.168.117.2 DNS1 = 192.168.117.2 Cat/etc/resolv. conf Nameserver 192.168.117.2 2. use the text tool nmtui to modify the network configuration (RHEL7/CentOS7 is installed by default, and NetworkManager. service must be enabled) Yum-y install NetworkManager-tui Nmtui-edit eno16777736 modify Nic configuration Nmtui-connect eno16777736 Restart the network Systemctl restart network Systemctl status network Modify host name: Vim/etc/hostname Centos7.simlinux.com Log out and log on again to take effect. II. disable unnecessary services The minimal installation of Centos7 does not contain commands such as nano, vim, wget, curl, ifconfig, and lsof. install the following command first: Yum-y install nano vim wget curl net-tools lsof You can use netstat and lsof to check which services are running in the system and disable unnecessary services. Systemctl stop postfix Systemctl stop avahi-daemon Systemctl disable postfix Systemctl disable avahi-daemon Systemctl list-unit-files: view the status report of the running service Systemctl start httpd. service start service Systemctl stop httpd. service disable the service Systemctl restart httpd. service restart service Systemctl reload httpd. service reload the service Systemctl disable httpd. service does not start Systemctl enable httpd. service Boot Systemctl status httpd. service View service running status Systemctl show httpd. service displays the attributes of a service or task. Systemctl list-dependencies httpd. service check service dependency Systemctl is-enabled httpd. service check whether the service is started and level Systemctl-H 192.168.117.128 start httpd. service start the httpd service on the machine 192.168.117.128