Скачать с ютуб Setting up network using a NetworkManager command line interface (nmcli) in Red Hat 7 в хорошем качестве

Setting up network using a NetworkManager command line interface (nmcli) in Red Hat 7

Red Hat Enterprise Linux 7: The Complete Guide to setting up network using a NetworkManager command line interface (nmcli) On your exam you may already have a NetworkManager connection on the server. A) If you don't have any NetworkManager connection on your exam: A.1) Add new NetworkManager connection: nmcli con add con-name "rhcsa_1" ifname eth0 type ethernet ip4 172.16.99.204/24 gw4 172.16.99.1 nmcli con mod "rhcsa_1" ipv4.dns "8.8.8.8 208.67.222.222" nmcli con mod "rhcsa_1" ipv4.method manual nmcli con mod "rhcsa_1" connection.autoconnect yes nmcli con mod "rhcsa_1" +ipv4.dns 8.8.4.4 A.2) Activate new NetworkManager connection: nmcli con up "rhcsa_1" A.3) Verify NetorkManager connection and /etc/resolv.conf file: nmcli con show "rhcsa_1" cat /etc/resolv.conf B) If you already have NetworkManager connection on your exam: B.1) Add another NetworkManager connection: nmcli con add con-name "rhcsa_1" ifname eth0 type ethernet ip4 172.16.99.204/24 gw4 172.16.99.1 nmcli con mod "rhcsa_1" ipv4.dns "8.8.8.8 208.67.222.222" nmcli con mod "rhcsa_1" ipv4.method manual nmcli con mod "rhcsa_1" connection.autoconnect yes B.1.2) Activate new NetworkManager connection: nmcli con up "rhcsa_1" B.1.3) Disable old NetworkManager connection to Automatically connect during system start-up: nmcli con mod "System eth0" connection.autoconnect no B.1.4) Check NetworkManager connections and verify new NetworkManager connection: nmcli con show nmcli con show --active nmcli con show "rhcsa_1" B.1.5) optional - remove old unwanted NetworkManager connection: nmcli con del "System eth0" B.2) Edit already existing NetworkManager connection: nmcli con mod "System eth0" ipv4.addresses 172.16.99.204/24 nmcli con mod "System eth0" ipv4.gateway 172.16.99.1 nmcli con mod "System eth0" ipv4.dns "8.8.8.8 208.67.222.222" nmcli con mod "System eth0" ipv4.method manual nmcli con mod "System eth0" connection.autoconnect yes B.2.1) Activate updated NetworkManager connection: nmcli con up "System eth0" B.2.2) Verify updated NetworkManager connection: nmcli con show "System eth0" NOTE: You can add more IP addresses to your NetworkManager connection: nmcli con mod "System eth0" +ipv4.addresses 10.100.1.99/24 Configure network using network interface configuration files and NetworkManager: vi /etc/sysconfig/network-scripts/ifcfg-(connection_name) Once network interface configuration file will be updated, please run below three commands to pick up changes: nmcli con reload nmcli con down (connection_name) nmcli con up (connection_name) NOTE: Please do not deactivate NetworkManager connection using nmcli con down (connection_name) command if you are connected to server remotely using that connection, because you will not get a chance to activate it back. In such case try: nmcli con down (con_name) && nmcli con up (con_name) or systemctl restart network Use man nmcli-examples for variety of examples: man nmcli man nmcli-examples To check your IP address, please use ip a command: ip a To verify your default gateway, please use ip r command: ip r To verify DNS servers configuration, please use dig command: dig redhat.com NOTE: you need to install bind-utils package for dig command. You can also try to ping some remote server: ping redhat.com Useful nmcli commands. To see a list of network devices and their state: nmcli dev or nmcli dev status Show detailed information about devices: nmcli dev show and nmcli dev show (device) To bring down an interface and temporarily disable autoconnect use command: nmcli dev dis (device) Connect the device. nmcli dev con (device) To disable or enable all managed interfaces use command: nmcli net off nmcli net on To turn off wifi: nmcli r wifi off Related Video Tutorials: RHCSA Fast Track course: Reset forgotten root password in Redhat 7:    • Reset forgotten root password in Redh...   Network Interface naming convention in Red Hat 7:    • Network Interface naming convention i...   Setting up network without NetworkManager in Redhat 7:    • Setting up network without NetworkMan...   Setting up network using NetworkManager and network scripts in Redhat 7:    • Setting up network using NetworkManag...   Setting up network using a NetworkManager text user interface (nmtui) in Red Hat 7 - EASY!!!    • Setting up network using a NetworkMan...   Setting up network in Red Hat 7 in less than a minute - QUICK & EASY!!!    • Setting up network in Red Hat 7 in le...   Setting up network using a NetworkManager command line interface (nmcli) in Red Hat 7    • Setting up network using a NetworkMan...   nmcli cheat! 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