我試圖在kubernetes上部署Pachyderm(docker bigdata平臺)。受限於Pachyderm,我必須安裝舊版本的kubernetes v1.2.2。我遵循指南http://kubernetes.io/docs/getting-started-guides/docker/通過docker在本地服務器上部署Kubernetes。該指南可以使用kubernetes> = 1.3.0,但是當我使用它來部署kubernetes 1.2.2時,我遇到了一些問題。Kubernetes v1.2.2 api-server dosen't start
docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
ec38ae951f09 gcr.io/google_containers/hyperkube-amd64:v1.2.2 "/hyperkube apiserver" 8 seconds ago Exited (255) 7 seconds ago k8s_apiserver.78ec1de_k8s-master-127.0.0.1_default_4c6ab43ac4ee970e1f563d76ab3d3ec9_d26fc24e
55c1b13bb610 gcr.io/google_containers/hyperkube-amd64:v1.2.2 "/setup-files.sh IP:1" 8 seconds ago Up 8 seconds k8s_setup.e5aa3216_k8s-master-127.0.0.1_default_4c6ab43ac4ee970e1f563d76ab3d3ec9_1cb4c220
b9f0e5b3a7a9 gcr.io/google_containers/hyperkube-amd64:v1.2.2 "/hyperkube scheduler" 9 seconds ago Up 8 seconds k8s_scheduler.fc12fcbe_k8s-master-127.0.0.1_default_4c6ab43ac4ee970e1f563d76ab3d3ec9_e5065506
9cd613d272bc gcr.io/google_containers/hyperkube-amd64:v1.2.2 "/hyperkube apiserver" 9 seconds ago Exited (255) 8 seconds ago k8s_apiserver.78ec1de_k8s-master-127.0.0.1_default_4c6ab43ac4ee970e1f563d76ab3d3ec9_c04426af
49fe2c409386 gcr.io/google_containers/etcd:2.2.1 "/usr/local/bin/etcd " 10 seconds ago Up 9 seconds k8s_etcd.7e452b0b_k8s-etcd-127.0.0.1_default_1df6a8b4d6e129d5ed8840e370203c11_a6f11fdb
5b208be18c71 gcr.io/google_containers/hyperkube-amd64:v1.2.2 "/hyperkube controlle" 10 seconds ago Up 9 seconds k8s_controller-manager.70414b65_k8s-master-127.0.0.1_default_4c6ab43ac4ee970e1f563d76ab3d3ec9_c377c5e9
df194f3cf663 gcr.io/google_containers/hyperkube-amd64:v1.2.2 "/hyperkube proxy --m" 10 seconds ago Up 9 seconds k8s_kube-proxy.9a9f4853_k8s-proxy-127.0.0.1_default_5e5303a9d49035e9fad52bfc4c88edc8_63ec0b04
58b53ec28fbe gcr.io/google_containers/pause:2.0 "/pause" 10 seconds ago Up 9 seconds k8s_POD.6059dfa2_k8s-etcd-127.0.0.1_default_1df6a8b4d6e129d5ed8840e370203c11_21034b2e
df48fe4cdf0a gcr.io/google_containers/pause:2.0 "/pause" 10 seconds ago Up 9 seconds k8s_POD.6059dfa2_k8s-master-127.0.0.1_default_4c6ab43ac4ee970e1f563d76ab3d3ec9_4867dbbc
fe6b74c2a881 gcr.io/google_containers/pause:2.0 "/pause" 10 seconds ago Up 9 seconds k8s_POD.6059dfa2_k8s-proxy-127.0.0.1_default_5e5303a9d49035e9fad52bfc4c88edc8_fad2c558
4c00ad498916 gcr.io/google_containers/hyperkube-amd64:v1.2.2 "/hyperkube kubelet -" 25 seconds ago Up 24 seconds kubelet
從Docker容器表中可以看到,當部署kubernetes1.2.2時,我的apiserver處於關閉狀態。 kubernetes apiserver的重啓間隔服從expontional backoff算法。但從來沒有工作。
然後,
sv: batch/v1
mv: extensions/__internal
I0727 06:06:27.593708 1 genericapiserver.go:82] Adding storage destination for group batch
W0727 06:06:27.593745 1 server.go:383] No RSA key provided, service account token authentication disabled
F0727 06:06:27.593767 1 server.go:410] Invalid Authentication Config: open /srv/kubernetes/basic_auth.csv: no such file or directory
請參閱kubernetes的搬運工日誌API服務器在這裏。請注意,發生了一些身份驗證錯誤,似乎Kubernetes沒有所需的密鑰被允許。也可以在此查看控制器管理器日誌。控制器管理器等待apiserver,但apiserver沒有跑過。控制器管理器也是轉儲。
E0727 06:07:10.604801 1 controllermanager.go:259] Failed to get api versions from server: Get http://127.0.0.1:8080/api: dial tcp 127.0.0.1:8080: connection refused
E0727 06:07:11.604832 1 controllermanager.go:259] Failed to get api versions from server: Get http://127.0.0.1:8080/api: dial tcp 127.0.0.1:8080: connection refused
E0727 06:07:12.604752 1 controllermanager.go:259] Failed to get api versions from server: Get http://127.0.0.1:8080/api: dial tcp 127.0.0.1:8080: connection refused
E0727 06:07:13.604803 1 controllermanager.go:259] Failed to get api versions from server: Get http://127.0.0.1:8080/api: dial tcp 127.0.0.1:8080: connection refused
E0727 06:07:14.604332 1 nodecontroller.go:229] Error monitoring node status: Get http://127.0.0.1:8080/api/v1/nodes: dial tcp 127.0.0.1:8080: connection refused
E0727 06:07:14.604619 1 controllermanager.go:259] Failed to get api versions from server: Get http://127.0.0.1:8080/api: dial tcp 127.0.0.1:8080: connection refused
E0727 06:07:14.604861 1 controllermanager.go:259] Failed to get api versions from server: Get http://127.0.0.1:8080/api: dial tcp 127.0.0.1:8080: connection refused
F0727 06:07:14.604957 1 controllermanager.go:263] Failed to get api versions from server: timed out waiting for the condition
所以對於我的問題,如何解決這個問題?這個問題困擾了我很長一段時間。
============================================== ====================== 更新:
在Goblin和Lukie的幫助下,我發現關鍵問題是Setup Pods
沒有觸發。 見Kubernetes的清單,
{
"name": "controller-manager",
"/hyperkube",
"controller-manager",
"--master=127.0.0.1:8080",
"--service-account-private-key-file=/srv/kubernetes/server.key",
"--root-ca-file=/srv/kubernetes/ca.crt",
"--min-resync-period=3m",
"--v=2"
],
"volumeMounts": [
{
"name": "data",
"mountPath": "/srv/kubernetes"
}
]
}
選項--service-account-private-key-file=/srv/kubernetes/server.key
已經在清單文件中添加,但它不工作。換句話說,控制器管理器在文件系統中找不到這個文件。以下命令支持此假設。
docker exec a82d7f6e4d7d ls -l /srv/kubernetes
ls: cannot access /srv/kubernetes: No such file or directory
接下來,我們檢查是否Setup Pod
把文件中的泊塢窗volumn。不幸的是,我們發現Setup Pod
沒有被觸發和工作,因此在文件系統中沒有寫入任何證書文件。
docker ps -a | grep setup
54afdd81349e gcr.io/google_containers/hyperkube-amd64:v1.2.2 "/setup-files.sh IP:1" About a minute ago Up About a minute k8s_setup.e5aa3216_k8s-master-127.0.0.1_default_4c6ab43ac4ee970e1f563d76ab3d3ec9_a2edddca
6f714e034098 gcr.io/google_containers/hyperkube-amd64:v1.2.2 "/setup-files.sh IP:1" 4 minutes ago Exited (7) 2 minutes ago k8s_setup.e5aa3216_k8s-master-127.0.0.1_default_4c6ab43ac4ee970e1f563d76ab3d3ec9_0d7dab5b
8358f6644d94 gcr.io/google_containers/hyperkube-amd64:v1.2.2 "/setup-files.sh IP:1" 6 minutes ago Exited (7) 4 minutes ago k8s_setup.e5aa3216_k8s-master-127.0.0.1_default_4c6ab43ac4ee970e1f563d76ab3d3ec9_41e4c686
是否有任何方法可以進一步調試?或者它是Kubernetes版本1.2中的錯誤?