K8S/Kubernetes

现在的水平，仅止于让它跑起来。：）

同样的环境,microk8s+istio。

步骤如下：

一，使用kubectl get pod -n istio-system查看所有istio的POD运行正常。

NAME                                      READY   STATUS      RESTARTS   AGE
grafana-5b5bb96d6d-xsmwb                  1/1     Running     0          7d6h
istio-citadel-69694bd465-wj5pp            1/1     Running     0          7d6h
istio-cleanup-secrets-7m87h               0/1     Completed   0          7d6h
istio-egressgateway-6d5cfb474-ffxv6       1/1     Running     0          7d6h
istio-galley-6d6b7f9cdd-tbdbb             1/1     Running     0          7d6h
istio-grafana-post-install-76crh          0/1     Completed   0          7d6h
istio-ingressgateway-859977c87-srsrg      1/1     Running     0          7d6h
istio-pilot-5ffcbc484f-wxdgx              2/2     Running     0          7d6h
istio-policy-76479db9b8-vgsfv             2/2     Running     0          7d6h
istio-security-post-install-kxrhr         0/1     Completed   0          7d6h
istio-sidecar-injector-56cdcffcd8-frrmb   1/1     Running     0          7d6h
istio-telemetry-75bd8c5898-7cs9f          2/2     Running     0          7d6h
istio-tracing-c8b67b59c-bvls6             1/1     Running     0          7d6h
prometheus-578b7dcfdc-2g7c9               1/1     Running     0          7d6h
servicegraph-84f87799b5-hs256             1/1     Running     0          7d6h

 

二，使用kubectl get svc -n istio-system了解istio主要的服务端口(注意jaeger-query:16686)

NAME                     TYPE           CLUSTER-IP       EXTERNAL-IP   PORT(S)                                                                                                                   AGE
grafana                  ClusterIP      10.152.183.14    <none>        3000/TCP                                                                                                                  7d6h
istio-citadel            ClusterIP      10.152.183.188   <none>        8060/TCP,9093/TCP                                                                                                         7d6h
istio-egressgateway      ClusterIP      10.152.183.228   <none>        80/TCP,443/TCP                                                                                                            7d6h
istio-galley             ClusterIP      10.152.183.200   <none>        443/TCP,9093/TCP                                                                                                          7d6h
istio-ingressgateway     LoadBalancer   10.152.183.167   <pending>     80:31380/TCP,443:31390/TCP,31400:31400/TCP,15011:31285/TCP,8060:30382/TCP,853:31889/TCP,15030:32354/TCP,15031:31495/TCP   7d6h
istio-pilot              ClusterIP      10.152.183.29    <none>        15010/TCP,15011/TCP,8080/TCP,9093/TCP                                                                                     7d6h
istio-policy             ClusterIP      10.152.183.148   <none>        9091/TCP,15004/TCP,9093/TCP                                                                                               7d6h
istio-sidecar-injector   ClusterIP      10.152.183.189   <none>        443/TCP                                                                                                                   7d6h
istio-telemetry          ClusterIP      10.152.183.138   <none>        9091/TCP,15004/TCP,9093/TCP,42422/TCP                                                                                     7d6h
jaeger-agent             ClusterIP      None             <none>        5775/UDP,6831/UDP,6832/UDP                                                                                                7d6h
jaeger-collector         ClusterIP      10.152.183.187   <none>        14267/TCP,14268/TCP                                                                                                       7d6h
jaeger-query             ClusterIP      10.152.183.236   <none>        16686/TCP                                                                                                                 7d6h
prometheus               ClusterIP      10.152.183.46    <none>        9090/TCP                                                                                                                  7d6h
servicegraph             ClusterIP      10.152.183.62    <none>        8088/TCP                                                                                                                  7d6h
tracing                  ClusterIP      10.152.183.3     <none>        80/TCP                                                                                                                    7d6h
zipkin                   ClusterIP      10.152.183.88    <none>        9411/TCP                                                                                                                  7d6h

这时，使用查询命令

kubectl get pod -n istio-system -l app=jaeger -o jsonpath='{.items[0].metadata.name}'

 

输出为：istio-tracing-c8b67b59c-bvls6

三，使用kubectl port-forward命令，将default名字空间下的16686端口的数据，转到istio-system名字空间里的16686端口。( 这个端口看上面输出对应关系)

kubectl port-forward -n istio-system $(kubectl get pod -n istio-system -l app=jaeger -o jsonpath='{.items[0].metadata.name}') 16686:16686

如果命令不放入后台，输出如下：

Forwarding from 127.0.0.1:16686 -> 16686
Forwarding from [::1]:16686 -> 16686
Handling connection for 16686
Handling connection for 16686
Handling connection for 16686
Handling connection for 16686

上面的输出，表示port-proxy forward命令，只能支持到127.0.0.1的本地局域网。

四，用SSH进行二次转发。

ssh -N -f -L 0.0.0.0:16687:127.0.0.1:16686 root@0.0.0.0

此处需要输入root密码，如果可以，更换为普通用户。

五，浏览器输入http://ip:16687即可访问到jaeger UI了。