CentOS8 Network

[ronel]

I have a CentOS 8 machine. I configured static IP in /etc/sysconfig/network-scripts/ifcfg-eno1 and restarted the network manager using "sudo systemctl restart NetworkManager"
I can ping the gateway from that machine but can't ping any other device on LAN and can't even reach this CentOS8 machine from LAN.

Here is my network config

TYPE=Ethernet

PROXY_METHOD=none

BROWSER ONLY=no
BOOTPROTO=static

DEFROUTE=yes
IPV4_FAILURE_FATAL=no

IPV6INIT=yes

IPV6 AUTOCONF=yes
IPV6_DEFROUTE=yes

IPV6 FAILURE FATAL=no

NAME=eno1

UUID=4fa1de25-dbbc-46e5-89b3-8165120554af

DEVICE=enol

ONBOOT=yes

IPADDR=192.168.1.10

PREFIX=24

GATEWAY=192.168.1.1

[BShT]

firewall?

[TrevorH]

I can ping the gateway from that machine but can't ping any other device on LAN and can't even reach this CentOS8 machine from LAN.

The gateway is not used for any hosts within 192.168.1.0/24 as they can be reached directly from the machine without needing to go via the gateway ip.

[ronel]

how do I configure NTP IP in CentOS8?

[ronel]

disabled firewall still the same. Time on the machine is not correct, I want to set NTP

[tunk]

I think C8 uses chronyd, and not ntpd:
https://access.redhat.com/documentation ... m-settings

[lightman47]

but can't ping any other device on LAN and can't even reach this CentOS8 machine from LAN

Are you trying with their IP address, or their name? If name, then your DNS server has an issue. If address is not working then ??? - perhaps duplicate addresses ... ??

[ronel]

No Duplicate address, it is a static Network. I'm pinging the IP. DNS server has no issues everything working fine other than this machine.

[jlehtone]

Code: Select all

NAME=eno1
DEVICE=enol

Is that 'l' a typo?

Doesn't your gateway offer DHCP? It is really much more convenient to configure a network centrally at DHCP server than manually in individual machines.

What is between this machine and all the other machines of same subnet (including the gateway)?

If you do listen traffic with 'tcpdump' in multiple machines and attempt ping (both others in this machine and this machine from others), does that show ARP/ICMP traffic?


I would rather use 'nmcli' than edit any /etc/sysconfig/network-scripts/ifcfg-* -file directly. The nmcli does some syntax checking.