留言簿示例不起作用。 无法连接到MASTER
我有四个小兵和一个在Ubuntu集群上的主人。 我正在关注留言簿示例。 Redis奴隶不与主人沟通。
＃kubectl获取节点
NAME LABELS STATUS 172.16.2.73 kubernetes.io/hostname=172.16.2.73 Ready 172.16.2.91 kubernetes.io/hostname=172.16.2.91 Ready 172.16.2.92 kubernetes.io/hostname=172.16.2.92 Ready 172.16.2.96 kubernetes.io/hostname=172.16.2.96 Ready ＃kubectl得到豆荚
POD IP CONTAINER(S) IMAGE(S) HOST LABELS STATUS CREATED MESSAGE kube-dns-99zoq 10.1.95.2 172.16.2.91/172.16.2.91 k8s-app=kube-dns,kubernetes.io/cluster-service=true,name=kube-dns Running About an hour kube2sky gcr.io/google_containers/kube2sky:1.1 Running About an hour last termination: exit code 1 skydns gcr.io/google_containers/skydns:2015-03-11-001 Running About an hour etcd quay.io/coreos/etcd:v2.0.3 Running About an hour redis-master-eq6ig 10.1.39.16 172.16.2.96/172.16.2.96 name=redis-master Running About an hour master redis Running About an hour redis-slave-f394k 10.1.34.2 172.16.2.73/172.16.2.73 name=redis-slave Running About an hour slave kubernetes/redis-slave:v2 Running About an hour redis-slave-t690b 10.1.46.2 172.16.2.92/172.16.2.92 name=redis-slave Running About an hour slave kubernetes/redis-slave:v2 Running About an hour
＃kubectl获取服务
NAME LABELS SELECTOR IP(S) PORT(S) kube-dns k8s-app=kube-dns,kubernetes.io/cluster-service=true,name=kube-dns k8s-app=kube-dns 15.1.3.10 53/UDP kubernetes component=apiserver,provider=kubernetes <none> 15.1.3.2 443/TCP kubernetes-ro component=apiserver,provider=kubernetes <none> 15.1.3.1 80/TCP redis-master name=redis-master name=redis-master 15.1.3.153 6379/TCP redis-slave name=redis-slave name=redis-slave 15.1.3.181 6379/TCP
＃kubectlloggingredis-slave-t690b
[9] 29 Jun 07:19:15.432 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128. [9] 29 Jun 07:19:15.432 * The server is now ready to accept connections on port 6379 [9] 29 Jun 07:19:16.432 * Connecting to MASTER redis-master:6379 [9] 29 Jun 07:19:31.581 # Unable to connect to MASTER: No such file or directory [9] 29 Jun 07:19:32.584 * Connecting to MASTER redis-master:6379 [9] 29 Jun 07:19:47.743 # Unable to connect to MASTER: No such file or directory [9] 29 Jun 07:19:48.746 * Connecting to MASTER redis-master:6379
＃cat /var/log/upstart/kube-proxy.log
E0629 00:12:00.166619 23844 api.go:180] Unable to load endpoints: Get http://172.16.2.73:8080/api/v1beta3/endpoints: dial tcp 172.16.2.73:8080: connection refused E0629 00:12:00.171629 23844 api.go:108] Unable to load services: Get http://172.16.2.73:8080/api/v1beta3/services: dial tcp 172.16.2.73:8080: connection refused E0629 00:22:15.168869 23844 proxier.go:153] Failed to ensure iptables: error creating chain "KUBE-PORTALS-CONTAINER": exit status 4: Another app is currently holding the xtables lock. Perhaps you want to use the -w option? E0629 00:22:15.180001 23844 proxier.go:391] Failed to install iptables KUBE-PORTALS-CONTAINER rule for service "default/redis-master:" E0629 00:22:15.180121 23844 proxier.go:168] Failed to ensure portal for "default/redis-master:": error checking rule: exit status 4: Another app is currently holding the xtables lock. Perhaps you want to use the -w option?
＃cat /var/log/upstart/flanneld.log
E0629 00:12:19.331286 23841 main.go:171] Failed to create SubnetManager: 100: Key not found (/coreos.com) [27] I0629 00:12:20.333500 23841 main.go:278] Installing signal handlers I0629 00:12:20.333742 23841 main.go:138] Determining IP address of default interface I0629 00:12:20.334787 23841 main.go:228] Using 172.16.2.73 as external interface I0629 00:12:20.336418 23841 subnet.go:334] Picking subnet in range 10.1.1.0 ... 10.1.255.0 I0629 00:12:20.900225 23841 subnet.go:97] Subnet lease acquired: 10.1.95.0/24 I0629 00:12:20.907356 23841 main.go:245] UDP mode initialized I0629 00:12:20.907526 23841 udp.go:212] Watching for new subnet leases I0629 00:12:20.909248 23841 udp.go:237] Subnet added: 10.1.74.0/24 I0629 00:12:21.340083 23841 udp.go:237] Subnet added: 10.1.8.0/24 I0629 00:12:21.340703 23841 udp.go:237] Subnet added: 10.1.96.0/24
看起来像一切工作正常，除了代理。 如何configuration代理，我没有在留言簿示例中find任何代理的东西？
我面临类似的问题，这个链接帮助： https ： //github.com/GoogleCloudPlatform/kubernetes/issues/6158看到由kcao3 hack解决scheme。
以下是变化：
- 在从属容器
/etc/hosts文件中添加redis-master IP - 在
/etc/hosts文件的前端容器中添加redis-slave IP和redis-master IP
注意：还要检查防火墙设置，如果您使用的是aws云，请确保安全组已启用需要的端口。