我曾经juju deploy canonical-kubernetes部署过 K8S。但是当./kubectl cluster-info运行Kubernetes 的规范分布charm 文档说，出现以下错误：
Error from server: an error on the server ("<html>\r\n<head><title>502
Bad Gateway</title></head>\r\n<body bgcolor=\"white\">\r\n<center>
<h1>502 Bad Gateway</h1></center>\r\n<hr><center>nginx/1.10.0
(Ubuntu)</center>\r\n</body>\r\n</html>") has prevented the request from succeeding
Juju 状态输出：
MODEL CONTROLLER CLOUD/REGION VERSION
default lxd-test localhost/localhost 2.0-rc3
APP VERSION STATUS SCALE CHARM STORE REV OS NOTES
easyrsa 3.0.1 active 1 easyrsa jujucharms 2 ubuntu
elasticsearch active 2 elasticsearch jujucharms 19 ubuntu
etcd 2.2.5 active 3 etcd jujucharms 13 ubuntu
filebeat active 4 filebeat jujucharms 5 ubuntu
flannel 0.6.1 waiting 4 flannel jujucharms 3 ubuntu
kibana active 1 kibana jujucharms 15 ubuntu
kubeapi-load-balancer 1.10.0 active 1 kubeapi-load-balancer jujucharms 2 ubuntu exposed
kubernetes-master 1.4.0 maintenance 1 kubernetes-master jujucharms 3 ubuntu
kubernetes-worker 1.4.0 waiting 3 kubernetes-worker jujucharms 3 ubuntu exposed
topbeat active 3 topbeat jujucharms 5 ubuntu
UNIT WORKLOAD AGENT MACHINE PUBLIC-ADDRESS PORTS MESSAGE
easyrsa/0* active idle 0 10.181.160.79 Certificate Authority connected.
elasticsearch/0* active idle 1 10.181.160.62 9200/tcp Ready
elasticsearch/1 active idle 2 10.181.160.72 9200/tcp Ready
etcd/0* active idle 3 10.181.160.41 2379/tcp Healthy with 3 known peers. (leader)
etcd/1 active idle 4 10.181.160.135 2379/tcp Healthy with 3 known peers.
etcd/2 active idle 5 10.181.160.204 2379/tcp Healthy with 3 known peers.
kibana/0* active idle 6 10.181.160.54 80/tcp,9200/tcp ready
kubeapi-load-balancer/0* active idle 7 10.181.160.42 443/tcp Loadbalancer ready.
kubernetes-master/0* maintenance idle 8 10.181.160.208 Rendering authentication templates.
filebeat/0 active idle 10.181.160.208 Filebeat ready.
flannel/0* waiting idle 10.181.160.208 Flannel is starting up.
kubernetes-worker/0* waiting idle 9 10.181.160.94 Waiting for cluster-manager to initiate start.
filebeat/1* active idle 10.181.160.94 Filebeat ready.
flannel/1 waiting idle 10.181.160.94 Flannel is starting up.
topbeat/0 active idle 10.181.160.94 Topbeat ready.
kubernetes-worker/1 waiting idle 10 10.181.160.95 Waiting for cluster-manager to initiate start.
filebeat/2 active idle 10.181.160.95 Filebeat ready.
flannel/2 waiting idle 10.181.160.95 Flannel is starting up.
topbeat/1* active executing 10.181.160.95 (update-status) Topbeat ready.
kubernetes-worker/2 waiting idle 11 10.181.160.148 Waiting for cluster-manager to initiate start.
filebeat/3 active idle 10.181.160.148 Filebeat ready.
flannel/3 waiting idle 10.181.160.148 Flannel is starting up.
topbeat/2 active idle 10.181.160.148 Topbeat ready.
MACHINE STATE DNS INS-ID SERIES AZ
0 started 10.181.160.79 juju-23ce86-0 xenial
1 started 10.181.160.62 juju-23ce86-1 trusty
2 started 10.181.160.72 juju-23ce86-2 trusty
3 started 10.181.160.41 juju-23ce86-3 xenial
4 started 10.181.160.135 juju-23ce86-4 xenial
5 started 10.181.160.204 juju-23ce86-5 xenial
6 started 10.181.160.54 juju-23ce86-6 trusty
7 started 10.181.160.42 juju-23ce86-7 xenial
8 started 10.181.160.208 juju-23ce86-8 xenial
9 started 10.181.160.94 juju-23ce86-9 xenial
10 started 10.181.160.95 juju-23ce86-10 xenial
11 started 10.181.160.148 juju-23ce86-11 xenial
RELATION PROVIDES CONSUMES TYPE
certificates easyrsa kubeapi-load-balancer regular
certificates easyrsa kubernetes-master regular
certificates easyrsa kubernetes-worker regular
peer elasticsearch elasticsearch peer
elasticsearch elasticsearch filebeat regular
rest elasticsearch kibana regular
elasticsearch elasticsearch topbeat regular
cluster etcd etcd peer
etcd etcd flannel regular
etcd etcd kubernetes-master regular
juju-info filebeat kubernetes-master regular
juju-info filebeat kubernetes-worker regular
sdn-plugin flannel kubernetes-master regular
sdn-plugin flannel kubernetes-worker regular
loadbalancer kubeapi-load-balancer kubernetes-master regular
kube-api-endpoint kubeapi-load-balancer kubernetes-worker regular
beats-host kubernetes-master filebeat subordinate
host kubernetes-master flannel subordinate
kube-dns kubernetes-master kubernetes-worker regular
beats-host kubernetes-worker filebeat subordinate
host kubernetes-worker flannel subordinate
beats-host kubernetes-worker topbeat subordinate
答案1
这似乎是因为你在 LXD 上部署了 Kubernetes。根据Canonical Kubernetes 的自述文件：
目前 LXD 不支持 kubernetes-master、kubernetes-worker、kubeapi-load-balancer 和 etcd。
这是 Docker 和 LXD 之间的限制 - 我们希望很快就能解决。同时，这些组件至少需要在虚拟机上运行。
您可以使用 LXD 手动执行此操作，将其余组件部署到 LXD，然后在您的计算机上手动启动几个 KVM 实例。
我将尝试获取一套清晰的说明并在此回复。