Kubernetes。无法连接到主人的任何窗格

Question

我试图在Openstack + CoreOS中设置Kubernetes。

我有主人10.240.63.84和2分钟.63和.83。我也创造了3个Redis的荚：

redis-gopher-gziey  10.244.32.2  10.240.63.66/10.240.63.66 
redis-managed-oh43e 10.244.32.3  10.240.63.66/10.240.63.66 
redis-primary-fplln   10.244.54.2  10.240.63.83/10.240.63.83 

主人的路由表如下所示：

10.240.63.0  *    255.255.255.0 U  0  0  0 eth0 
10.240.63.1  *    255.255.255.255 UH 1024 0  0 eth0 
10.244.0.0  *    255.255.0.0  U  0  0  0 flannel.1 
10.244.50.0  *    255.255.255.0 U  0  0  0 docker0 

和使用ifconfig -a的输出为：

docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 
     inet 10.244.50.1 netmask 255.255.255.0 broadcast 0.0.0.0 
     inet6 fe80::542f:6fff:fe4a:adf3 prefixlen 64 scopeid 0x20<link> 
     ether 56:84:7a:fe:97:99 txqueuelen 0 (Ethernet) 
     RX packets 0 bytes 0 (0.0 B) 
     RX errors 0 dropped 0 overruns 0 frame 0 
     TX packets 1 bytes 90 (90.0 B) 
     TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 
     inet 10.240.63.84 netmask 255.255.255.0 broadcast 10.240.63.255 
     inet6 fe80::f816:3eff:fe89:e9a0 prefixlen 64 scopeid 0x20<link> 
     ether fa:16:3e:89:e9:a0 txqueuelen 1000 (Ethernet) 
     RX packets 430706 bytes 559764129 (533.8 MiB) 
     RX errors 0 dropped 0 overruns 0 frame 0 
     TX packets 238519 bytes 116083693 (110.7 MiB) 
     TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 

flannel.1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1450 
     inet 10.244.50.0 netmask 255.255.0.0 broadcast 0.0.0.0 
     inet6 fe80::601f:62ff:feed:1556 prefixlen 64 scopeid 0x20<link> 
     ether 62:1f:62:ed:15:56 txqueuelen 0 (Ethernet) 
     RX packets 20 bytes 1504 (1.4 KiB) 
     RX errors 0 dropped 0 overruns 0 frame 0 
     TX packets 79 bytes 7686 (7.5 KiB) 
     TX errors 0 dropped 19 overruns 0 carrier 0 collisions 0 

用于初始化

Flanneld配置为：

主页： 主页：

- name: flanneld.service 
     command: start 
     drop-ins: 
     - name: 50-network-config.conf 
      content: | 
      [Service] 
      ExecStartPre=/usr/bin/etcdctl set /coreos.com/network/config '{"Network":"10.244.0.0/16", "Backend": {"Type": "vxlan"}}' 
      ExecStart= 
      ExecStart=/usr/libexec/sdnotify-proxy /run/flannel/sd.sock \ 
       /usr/bin/docker run --net=host --privileged=true --rm \ 
        --volume=/run/flannel:/run/flannel \ 
        --env=NOTIFY_SOCKET=/run/flannel/sd.sock \ 
        --env-file=/run/flannel/options.env \ 
        --volume=${ETCD_SSL_DIR}:/etc/ssl/etcd:ro \ 
        quay.io/coreos/flannel:${FLANNEL_VER} /opt/bin/flanneld --ip-masq=true --iface=eth0 

爪牙：

- name: flanneld.service 
     command: start 
     drop-ins: 
     - name: 50-network-config.conf 
      content: | 
      [Service] 
      ExecStartPre=/usr/bin/etcdctl set /coreos.com/network/config '{"Network":"10.244.0.0/16", "Backend": {"Type": "vxlan"}}' 
      ExecStart= 
      ExecStart=/usr/libexec/sdnotify-proxy /run/flannel/sd.sock \ 
       /usr/bin/docker run --net=host --privileged=true --rm \ 
        --volume=/run/flannel:/run/flannel \ 
        --env=NOTIFY_SOCKET=/run/flannel/sd.sock \ 
        --env-file=/run/flannel/options.env \ 
        --volume=${ETCD_SSL_DIR}:/etc/ssl/etcd:ro \ 
        quay.io/coreos/flannel:${FLANNEL_VER} /opt/bin/flanneld -etcd-endpoints  http://10.240.63.84:4001 --ip-masq=true --iface=eth0 

所以，问题是，我无法Ping任何来自主舱体，以及连接到任何端口，错误是：

ncat -v -t 10.244.32.2 6379 
Ncat: Version 6.40 (http://nmap.org/ncat) 
Ncat: No route to host. 

Answer 1

这有些事情很难远程调试。发件人

1）：事情我会检查iptables -t raw -I OUTPUT -d 10.244.32.2 -j TRACE; dmesg -c > /dev/null; ncat -v -t 10.244.32.2 6379; dmesg;

这会给你一些洞察内核正在做什么。发件人

2）：tcpdump -i any host 10.244.32.2 & NCAT -v -t 10.244.32.2 6379;`

这会给略偏洞察力。

3）接收器：iptables -t raw -I OUTPUT -d 10.244.32.2 -j TRACE; dmesg -c > /dev/null; ncat -v -t 10.244.32.2 6379; dmesg;

这会告诉你，如果该数据包通过封装来了。

你需要基本证明整个连接的管道。