i have gone through those posts Rata.
here is command i used to setup master.
kubeadm init --apiserver-advertise-address=192.168.56.103 --pod-network-cidr=10.244.0.0/16
[root@localhost ~]# ifconfig -a
datapath: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1376
inet6 fe80::aca1:67ff:fe75:8f45 prefixlen 64 scopeid 0x20
ether ae:a1:67:75:8f:45 txqueuelen 0 (Ethernet)
RX packets 7 bytes 530 (530.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 8 bytes 648 (648.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
ether 02:42:1e:44:72:de txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
dummy0: flags=130<BROADCAST,NOARP> mtu 1500
ether 22:ce:79:b7:61:63 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.56.103 netmask 255.255.255.0 broadcast 192.168.56.255
inet6 fe80::a00:27ff:fe71:df7 prefixlen 64 scopeid 0x20
ether 08:00:27:71:0d:f7 txqueuelen 1000 (Ethernet)
RX packets 34750 bytes 3061888 (2.9 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 43242 bytes 35408226 (33.7 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp0s8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.3.15 netmask 255.255.255.0 broadcast 10.0.3.255
inet6 fe80::10be:ab58:3fed:2c4d prefixlen 64 scopeid 0x20
ether 08:00:27:c4:94:a6 txqueuelen 1000 (Ethernet)
RX packets 32 bytes 7633 (7.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 51 bytes 5428 (5.3 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
flannel.1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1450
inet 10.244.0.0 netmask 255.255.255.255 broadcast 0.0.0.0
inet6 fe80::3864:eeff:fe99:43bc prefixlen 64 scopeid 0x20
ether 3a:64:ee:99:43:bc txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 8 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10
loop txqueuelen 0 (Local Loopback)
RX packets 830556 bytes 219707892 (209.5 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 830556 bytes 219707892 (209.5 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vethwe-bridge: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1376
inet6 fe80::dc6a:21ff:fe4a:688e prefixlen 64 scopeid 0x20
ether de:6a:21:4a:68:8e txqueuelen 0 (Ethernet)
RX packets 10 bytes 788 (788.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 16 bytes 1296 (1.2 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vethwe-datapath: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1376
inet6 fe80::e82a:7fff:fed2:95f prefixlen 64 scopeid 0x20
ether ea:2a:7f:d2:09:5f txqueuelen 0 (Ethernet)
RX packets 830556 bytes 219707892 (209.5 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 830556 bytes 219707892 (209.5 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
weave: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1376
inet6 fe80::709d:3aff:fef1:c6cd prefixlen 64 scopeid 0x20
ether 72:9d:3a:f1:c6:cd txqueuelen 0 (Ethernet)
RX packets 7 bytes 432 (432.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 8 bytes 648 (648.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
i dont know what to according to those post