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Debugging Kubernetes network
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# /etc/systemd/system/docker.service | |
[Unit] | |
Description=Docker Application Container Engine | |
Documentation=http://docs.docker.com | |
After=docker.socket early-docker.target network.target setup-network-environment.service | |
Requires=docker.socket early-docker.target setup-network-environment.service | |
[Service] | |
Environment=TMPDIR=/var/tmp | |
MountFlags=slave | |
LimitNOFILE=1048576 | |
LimitNPROC=1048576 | |
ExecStart=/usr/lib/coreos/dockerd --daemon --host=fd:// --bridge=cbr0 --iptables=false --ip-masq=false | |
[Install] | |
WantedBy=multi-user.target |
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core@pc-10368 ~ $ docker exec -ti 3b6 /bin/bash | |
root@test-0ocfk:/# ping -c 1 192.168.1.1 | |
PING 192.168.1.1 (192.168.1.1): 56 data bytes | |
ping: sending packet: Network is unreachable | |
root@test-0ocfk:/# ping -c 1 192.168.1.6 | |
PING 192.168.1.6 (192.168.1.6): 56 data bytes | |
ping: sending packet: Network is unreachable | |
root@test-0ocfk:/# ping -c 1 www.google.com | |
ping: unknown host | |
root@test-0ocfk:/# ifconfig | |
bash: ifconfig: command not found | |
root@test-0ocfk:/# exit | |
core@pc-10368 ~ $ |
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core@pc-10368 ~ $ ifconfig cbr0 | |
cbr0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 | |
inet 192.168.1.1 netmask 255.255.255.0 broadcast 192.168.1.255 | |
inet6 fe80::d8c5:1fff:fe59:42ff prefixlen 64 scopeid 0x20<link> | |
ether da:c5:1f:59:42:ff txqueuelen 0 (Ethernet) | |
RX packets 71 bytes 5132 (5.0 KiB) | |
RX errors 0 dropped 0 overruns 0 frame 0 | |
TX packets 326 bytes 17297 (16.8 KiB) | |
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 |
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core@pc-10368 ~ $ docker run -ti ubuntu | |
root@5159bdfd3d36:/# ping -c 1 192.168.1.1 | |
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. | |
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.053 ms | |
--- 192.168.1.1 ping statistics --- | |
1 packets transmitted, 1 received, 0% packet loss, time 0ms | |
rtt min/avg/max/mdev = 0.053/0.053/0.053/0.000 ms | |
root@5159bdfd3d36:/# ifconfig | |
eth0 Link encap:Ethernet HWaddr 02:42:c0:a8:01:08 | |
inet addr:192.168.1.8 Bcast:0.0.0.0 Mask:255.255.255.0 | |
inet6 addr: fe80::42:c0ff:fea8:108/64 Scope:Link | |
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 | |
RX packets:27 errors:0 dropped:0 overruns:0 frame:0 | |
TX packets:11 errors:0 dropped:0 overruns:0 carrier:0 | |
collisions:0 txqueuelen:0 | |
RX bytes:2300 (2.3 KB) TX bytes:898 (898.0 B) | |
lo Link encap:Local Loopback | |
inet addr:127.0.0.1 Mask:255.0.0.0 | |
inet6 addr: ::1/128 Scope:Host | |
UP LOOPBACK RUNNING MTU:65536 Metric:1 | |
RX packets:0 errors:0 dropped:0 overruns:0 frame:0 | |
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 | |
collisions:0 txqueuelen:0 | |
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) | |
root@5159bdfd3d36:/# ping -c 1 www.google.com | |
PING www.google.com (173.194.40.82) 56(84) bytes of data. | |
64 bytes from zrh04s06-in-f18.1e100.net (173.194.40.82): icmp_seq=1 ttl=52 time=1.09 ms | |
--- www.google.com ping statistics --- | |
1 packets transmitted, 1 received, 0% packet loss, time 0ms | |
rtt min/avg/max/mdev = 1.098/1.098/1.098/0.000 ms | |
root@5159bdfd3d36:/# |
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