Rollback Image Features

Support
1

Dear all forumers, Does almalinux offer rollback to previous working configuration in regard to something like snapshot because my almalinux cannot ping default gateway.

ip route show table all
default via 192.168.1.1 dev eth0 proto dhcp src 192.168.1.100 metric 100
192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.100 metric 100
local 127.0.0.0/8 dev lo table local proto kernel scope host src 127.0.0.1
local 127.0.0.1 dev lo table local proto kernel scope host src 127.0.0.1
broadcast 127.255.255.255 dev lo table local proto kernel scope link src 127.0.0.1
local 192.168.1.100 dev eth0 table local proto kernel scope host src 192.168.1.100
broadcast 192.168.1.255 dev eth0 table local proto kernel scope link src 192.168.1.100
fe80::/64 dev eth0 proto kernel metric 1024 pref medium
local ::1 dev lo table local proto kernel metric 0 pref medium
local fe80::96b1:914d:f21d:1e01 dev eth0 table local proto kernel metric 0 pref medium
multicast ff00::/8 dev eth0 table local proto kernel metric 256 pref medium

nicholaswkc@localhost:~$ netstat -r | more
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
default _gateway 0.0.0.0 UG 0 0 0 eth0
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0

nicholaswkc@localhost:~$ arp -a
? (192.168.1.102) at 5c:e9:31:82:02:a0 [ether] on eth0
? (192.168.1.101) at ec:f7:2c:17:a8:69 [ether] on eth0
? (192.168.1.104) at 98:90:96:9b:bf:08 [ether] on eth0
? (192.168.1.106) at on eth0
? (192.168.1.103) at 70:b5:e8:28:70:19 [ether] on eth0
_gateway (192.168.1.1) at 80:61:5f:08:2a:d8 [ether] on eth0

Please help. Thanks.

2

hello

Your routing table and ARP table look mostly fine.

You already have:

default via 192.168.1.1 dev eth0
_gateway (192.168.1.1) at 80:61:5f:08:2a:d8 [ether] on eth0

So the host can resolve the gateway at Layer 2. This does not look like a missing default route.

I would check firewall rules, duplicate IP addresses, VLAN/bridge settings, and whether the gateway simply blocks ICMP echo replies.

AlmaLinux does not provide a full system snapshot rollback by default unless you configured something like LVM snapshots, Btrfs snapshots, or VM snapshots. dnf history rollback is only for package transactions, not for restoring arbitrary network configuration.

thank you