Version 7.0 Service Management
Adopt the management thought of SYSTEMD
/usr/lib/systemd/system
View boot status for all services in the system
Example: Systemctl list-unit-files grep ssh
How the service is named: Process name. service configuration only need to write the process name
Example: Sshd.service
#systemctl Restart sshd Restart Service
#systemctl Start sshd Open service
#systemctl Stop sshd Deactivation Service
#systemctl Status sshd service state
#systemctl enable sshd to boot automatically
#systemctl Disable sshd boot disable service
Graphical Network configuration
#systemctl status NetworkManager services that support graphical network configuration
#systemctl Restart NetworkManager
#nmtui go to the graphical configuration menu Automatic Auto get;Manual manual Configuration
Modify the configuration file directly, but not immediately, need to restart the network service
#systemctl Restart Network
1. View network Parameters
1)IP address, subnet mask
Ifconfig-a Viewing network card information ( active NIC and inactive Nic )
Ifconfig network card name down disable NIC
Ifconfig network card name up enable Nic
2) Gateway
Route-n viewing the native Routing table View gateway
Destination reach the target network segment
Gateway Gateways
Genmask Network Segment Mask
Flags flag (u means Nic is on,UG stands for Gateway)
3)DNS
configuration file:/etc/resolv.conf Edit:nameserver + name server
2. Host name
View host name hostname
permanently Modify host name /etc/hostname
3. Static parsing file /etc/hosts
IP address host name
IP address FQDN(full name )
4. Setting Network Parameters
Ifconfig nic name IP address
Example:ifconfig eno33554960 192.168.10.3 automatically assign masks based on classification of IP addresses
Permanent effect Modify configuration file
/etc/sysconfig/network-scripts/ifcfg-eno16777736
Type = Ethernet (type is Ethernet)
Bootproto = None (Specifies how the network card obtains the IP address.) ) None static IP;DHCP Dynamic Acquisition
Name = eno16777736 (nic name)
UUID = device ID
Onboot = yes (whether to automatically connect the NIC)
IPADDR0 = IP address
PREFIX0 = + ( subnet mask: number of bits)
GATEWAY0 = Gateway
DNS1 = DNS
7.0 Previous version system services
1.setup into the graphical configuration menu
Service Network Restart Restart Network Service, configuration file takes effect
Add a new network card, drive auto-install, but the configuration file can not be automatically generated
2. Use INIT.D to record all system services
/etc/rc.d/init.d/
3. Example: Sshd.service
#service sshd Restart Restart Service
#service sshd start Start service
#service sshd Status Service state
#service sshd Stop Service
#chkconfig sshd off start automatically
#chkconfig sshd on disable service
Modify Host Name
/etc/sysconfig/network
Linux System Network Service management configuration