9、docker+k8s+kubesphere:Kubernetes安装(2020-08-02更新)

2023-05-16

9、docker+k8s+kubesphere:Kubernetes安装

官网说明一定详细查看(本文用的是2.1.1)
https://github.com/kubesphere/ks-installer/blob/master/README_zh.md
https://github.com/kubesphere/ks-installer/blob/v2.1.1/README_zh.md
官网说明一定详细查看
https://kubesphere.io/docs/zh-CN/installation/prerequisites/
https://kubesphere.io/docs/zh-CN/installation/install-on-k8s/

yaml安装

https://github.com/kubesphere/ks-installer
拷贝里面的kubesphere-minimal.yaml文件
vim kubesphere-minimal.yaml
粘贴官网的的yaml的内容

执行
kubectl apply -f kubespher-minimal.yaml
执行结果如下
[root@node151 ~]# kubectl apply -f kubesphere-minimal.yaml 
namespace/kubesphere-system created
configmap/ks-installer created
serviceaccount/ks-installer created
clusterrole.rbac.authorization.k8s.io/ks-installer created
clusterrolebinding.rbac.authorization.k8s.io/ks-installer created
deployment.apps/ks-installer created


查看kubesphere日志
kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l app=ks-install -o jsonpath='{.items[0].metadata.name}') -f

监控kubesphere的pod
watch kubectl get pods -n kubesphere-system -o wide
监控所有pod
watch kubectl get pods --all-namespaces -o wide
整个过程一小时左右,根据服务器,网速情况而定

查看pod

kubectl get pod --all-namespaces
[root@node151 ~]# kubectl get pod --all-namespaces
NAMESPACE           NAME                                       READY   STATUS    RESTARTS   AGE
default             nfs-client-provisioner-5cf8c79ff9-jhbmx    1/1     Running   1          8d
kube-system         calico-kube-controllers-589b5f594b-ckfgz   1/1     Running   2          8d
kube-system         calico-node-msd6f                          1/1     Running   2          8d
kube-system         calico-node-s9xf6                          1/1     Running   3          8d
kube-system         calico-node-wcztl                          1/1     Running   2          8d
kube-system         coredns-7f9c544f75-gmclr                   1/1     Running   3          8d
kube-system         coredns-7f9c544f75-t7jh6                   1/1     Running   3          8d
kube-system         etcd-node151                               1/1     Running   5          8d
kube-system         kube-apiserver-node151                     1/1     Running   7          8d
kube-system         kube-controller-manager-node151            1/1     Running   9          8d
kube-system         kube-proxy-5t7jg                           1/1     Running   4          8d
kube-system         kube-proxy-fqjh2                           1/1     Running   3          8d
kube-system         kube-proxy-mbxtx                           1/1     Running   3          8d
kube-system         kube-scheduler-node151                     1/1     Running   10         8d
kube-system         tiller-deploy-797955c678-htwxb             1/1     Running   1          8d
kubesphere-system   ks-installer-75b8d89dff-5jdbj              1/1     Running   1          8d
这里有一个kubesphere-system的pod,所有的pod都需要Running状态,如果服务器配置比较差,估计慢点或者会出问题

查看kubesphere

kubectl describe pod ks-installer-75b8d89dff-5jdbj -n kubesphere-system
结果如下
[root@node151 ~]# kubectl describe pod ks-installer-75b8d89dff-5jdbj -n kubesphere-system
Name:         ks-installer-75b8d89dff-5jdbj
Namespace:    kubesphere-system
Priority:     0
Node:         node153/192.168.5.153
Start Time:   Sat, 25 Jul 2020 01:42:42 +0800
Labels:       app=ks-install
              pod-template-hash=75b8d89dff
Annotations:  cni.projectcalico.org/podIP: 10.20.235.9/32
Status:       Running
IP:           10.20.235.9
IPs:
  IP:           10.20.235.9
Controlled By:  ReplicaSet/ks-installer-75b8d89dff
Containers:
  installer:
    Container ID:   docker://31dcc870d139f8d280e9bfc77e490dbb0efef28dbde7e8a2771c23cc0296eee1
    Image:          kubesphere/ks-installer:v2.1.1
    Image ID:       docker-pullable://kubesphere/ks-installer@sha256:c3c62542a36ebb1c885d724dc2b0328cd78f9b27322393bd9c03a08b27db7e28
    Port:           <none>
    Host Port:      <none>
    State:          Running
      Started:      Sun, 02 Aug 2020 13:35:28 +0800
    Last State:     Terminated
      Reason:       Error
      Exit Code:    255
      Started:      Sat, 25 Jul 2020 01:43:30 +0800
      Finished:     Sun, 02 Aug 2020 13:34:19 +0800
    Ready:          True
    Restart Count:  1
    Environment:    <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from ks-installer-token-pm9wj (ro)
Conditions:
  Type              Status
  Initialized       True 
  Ready             True 
  ContainersReady   True 
  PodScheduled      True 
Volumes:
  ks-installer-token-pm9wj:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  ks-installer-token-pm9wj
    Optional:    false
QoS Class:       BestEffort
Node-Selectors:  <none>
Tolerations:     node.kubernetes.io/not-ready:NoExecute for 300s
                 node.kubernetes.io/unreachable:NoExecute for 300s
Events:
  Type    Reason          Age                From              Message
  ----    ------          ----               ----              -------
  Normal  SandboxChanged  20m (x2 over 20m)  kubelet, node153  Pod sandbox changed, it will be killed and re-created.
  Normal  Pulling         20m                kubelet, node153  Pulling image "kubesphere/ks-installer:v2.1.1"
  Normal  Pulled          19m                kubelet, node153  Successfully pulled image "kubesphere/ks-installer:v2.1.1"
  Normal  Created         19m                kubelet, node153  Created container installer
  Normal  Started         19m                kubelet, node153  Started container installer

重装kubesphere

查看所有的pod
kubectl get pod --all-namespaces   #复制name
执行
kubectl delete pod  ks-installer-75b8d89dff-xt2mj -n kubesphere-system
执行结果如下:
[root@node151 ~]# kubectl delete pod  ks-installer-75b8d89dff-xt2mj -n kubesphere-system
pod "ks-installer-75b8d89dff-5jdbj" deleted
执行
kubectl delete ns kubesphere-system
结果如下
[root@node151 ~]# kubectl delete ns kubesphere-system
namespace "kubesphere-system" deleted

磁盘使用情况

[root@node151 ~]# df -T -h
文件系统                类型      容量  已用  可用 已用% 挂载点
devtmpfs                devtmpfs  5.7G     0  5.7G    0% /dev
tmpfs                   tmpfs     5.7G     0  5.7G    0% /dev/shm
tmpfs                   tmpfs     5.7G   21M  5.7G    1% /run
tmpfs                   tmpfs     5.7G     0  5.7G    0% /sys/fs/cgroup
/dev/mapper/centos-root xfs        77G  3.6G   74G    5% /
/dev/sda1               xfs      1014M  193M  822M   19% /boot
tmpfs                   tmpfs     1.2G     0  1.2G    0% /run/user/0
overlay                 overlay    77G  3.6G   74G    5% /var/lib/docker/overlay2/784825f89e644f454ecff60f7cbb8936ed7ebb823c660ad08150c3ff6c09d92c/merged
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/b9db8a83334ba6ffa226303486d7161cc71c09001eb0f6ea0e4a9cf15eeaeb9c/mounts/shm
overlay                 overlay    77G  3.6G   74G    5% /var/lib/docker/overlay2/12c948b03ec1d17a1c09fc1c4ce4ec48bf7a53ebf796dbd8ea9ed5b4aeb2b982/merged
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/cda9568992b26f0ea401dc82c81ef9dade1efd0df1ed79d18ff3e82bd870fc56/mounts/shm
overlay                 overlay    77G  3.6G   74G    5% /var/lib/docker/overlay2/5799e17805cdbb3e4dfe686338e6f0d8ff340bd209c46312b79915a3fa192643/merged
overlay                 overlay    77G  3.6G   74G    5% /var/lib/docker/overlay2/621ee386047ff30ff3c2c57db3efa0378df60b42bec1063e7b6f3d2d8b584a5a/merged
overlay                 overlay    77G  3.6G   74G    5% /var/lib/docker/overlay2/71079d307ae789fff30e6d8cf7b37bcce6c5bd7c80a89f3f2edd2603d1ea50c4/merged
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/cd9f5f902cde6f119e6075174129da912949177a619600d6408af89f86a23ede/mounts/shm
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/331b5b0e3b1b09b98f4b93984d82da948fff7b82dea24f345c6879aa6516db35/mounts/shm
overlay                 overlay    77G  3.6G   74G    5% /var/lib/docker/overlay2/5a30575d9319172178f47302d80525f247c5775e597ba76f0c52c3e5beee4d0f/merged
tmpfs                   tmpfs     5.7G   12K  5.7G    1% /var/lib/kubelet/pods/066127e9-7487-4c85-8a32-dfae882219a7/volumes/kubernetes.io~secret/coredns-token-sssw7
tmpfs                   tmpfs     5.7G   12K  5.7G    1% /var/lib/kubelet/pods/7fd78368-8d4d-47bd-8710-68eb7fc09462/volumes/kubernetes.io~secret/kube-proxy-token-vvl2k
tmpfs                   tmpfs     5.7G   12K  5.7G    1% /var/lib/kubelet/pods/8caa67b6-4862-4a52-9897-0c907fa042a0/volumes/kubernetes.io~secret/calico-node-token-8xp4l
overlay                 overlay    77G  3.6G   74G    5% /var/lib/docker/overlay2/7880159fb5c0abb56d2461c343977bb3e1dead5fd4e8069cc381334c690683c4/merged
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/204090d69a8960e76cf839937d22f7d70c23463e18e6660d65196c9f84b1a02c/mounts/shm
overlay                 overlay    77G  3.6G   74G    5% /var/lib/docker/overlay2/4abe2aad6a24a530a0c1496447e481f19ea705186fb0d06e5f107c6c485f40a5/merged
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/7d0125a2c6612aae7ae5ee189a62abc9a159c3637657c8f92d155c6fca343f8e/mounts/shm
overlay                 overlay    77G  3.6G   74G    5% /var/lib/docker/overlay2/cc2f9a3e04effaa931e7e7f228947db4bcf46874df73cec1a3a7b9ffe5a78c74/merged
overlay                 overlay    77G  3.6G   74G    5% /var/lib/docker/overlay2/0e81c73adaec5260c07f9d08cbb32846dc9e48a0795b69530afde9fee4382d93/merged
overlay                 overlay    77G  3.6G   74G    5% /var/lib/docker/overlay2/b7065cc25a49c14d783d946b44ebee57afc50904745827d285fe4c4f5e2d6c41/merged
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/297c0ba0fbf67b0f3182135c311c2a5a3580c5cf08ca6899425eafb6a0b02980/mounts/shm
overlay                 overlay    77G  3.6G   74G    5% /var/lib/docker/overlay2/9c20b2ba57e9af0c80a476abf2bfdab869708c15250d61e70d54ef4ae1b12992/merged
overlay                 overlay    77G  3.6G   74G    5% /var/lib/docker/overlay2/cfb58b5a149be6b7c0bbd3b33058331a56c48ed8426f2562aace1b3e2f534e0c/merged
overlay                 overlay    77G  3.6G   74G    5% /var/lib/docker/overlay2/8da687c200c245780b152271775c24a7bebe969a033fdea256ecf5838a27d8b3/merged



[root@node152 ~]# df -T -h
文件系统                类型      容量  已用  可用 已用% 挂载点
devtmpfs                devtmpfs  5.7G     0  5.7G    0% /dev
tmpfs                   tmpfs     5.7G     0  5.7G    0% /dev/shm
tmpfs                   tmpfs     5.7G   29M  5.7G    1% /run
tmpfs                   tmpfs     5.7G     0  5.7G    0% /sys/fs/cgroup
/dev/mapper/centos-root xfs        77G  2.9G   75G    4% /
/dev/sda1               xfs      1014M  193M  822M   19% /boot
tmpfs                   tmpfs     5.7G   12K  5.7G    1% /var/lib/kubelet/pods/eb56f4a5-8fd4-4f7a-8366-253c1b603267/volumes/kubernetes.io~secret/calico-node-token-8xp4l
tmpfs                   tmpfs     5.7G   12K  5.7G    1% /var/lib/kubelet/pods/1ae20b25-ba79-4112-87f5-26eb3e36d9ce/volumes/kubernetes.io~secret/kube-proxy-token-vvl2k
overlay                 overlay    77G  2.9G   75G    4% /var/lib/docker/overlay2/084bae30ffd1ffced37738f2aebbdc1e8cab17ecdb64c19a3be28b39ad7dbb70/merged
overlay                 overlay    77G  2.9G   75G    4% /var/lib/docker/overlay2/b43d477f7025e4adc1159ff0ac2743a84601e87636d7f876ca2c6f5b2b8abcc0/merged
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/ff0bb58d6f7dac37922331ba1d46f6cc71e76fe56c82ec567ce3ac39acf4ab44/mounts/shm
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/c1b455138f413512f3e6f564987f6765bbb0cba0b72662868b060dd12a95859c/mounts/shm
overlay                 overlay    77G  2.9G   75G    4% /var/lib/docker/overlay2/7f2216030c982b37808f38c2eeb73160d37cd16a66a46e668e5ba8f36c41a593/merged
overlay                 overlay    77G  2.9G   75G    4% /var/lib/docker/overlay2/b4346c42dd09fc202210b182f48091d55e20540b89446ddd948941460ec398b1/merged
tmpfs                   tmpfs     1.2G     0  1.2G    0% /run/user/0
tmpfs                   tmpfs     5.7G   12K  5.7G    1% /var/lib/kubelet/pods/c80f134d-086d-41ec-8702-a493ca283c13/volumes/kubernetes.io~secret/tiller-token-wsncc
overlay                 overlay    77G  2.9G   75G    4% /var/lib/docker/overlay2/283a380aaddf947d3f1feb2746a0374e50545f31dfe7b92ea83a7d310352d746/merged
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/4b75c922caf25ccef6ea0128de6739bd4d6f88d03990a447f3e7997393c44208/mounts/shm
overlay                 overlay    77G  2.9G   75G    4% /var/lib/docker/overlay2/89f2a4100f34912a5593444cb62c1c36bacc93a2ec2a14d491507672ec57fc28/merged
tmpfs                   tmpfs     5.7G   12K  5.7G    1% /var/lib/kubelet/pods/7908f773-3bda-46e1-bc44-d4c7cec884ef/volumes/kubernetes.io~secret/nfs-provisioner-token-wvcjd
192.168.5.151:/data     nfs4       77G  3.6G   74G    5% /var/lib/kubelet/pods/7908f773-3bda-46e1-bc44-d4c7cec884ef/volumes/kubernetes.io~nfs/nfs-client
overlay                 overlay    77G  2.9G   75G    4% /var/lib/docker/overlay2/d2988ff627bddf8bb90cfd5c2156e2684f3b4397e06c1693f976f90b01059af1/merged
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/3a7a83b00b53ee0762cb824645bf2007e03077c1d92f126b69b0a852197a2e7e/mounts/shm
overlay                 overlay    77G  2.9G   75G    4% /var/lib/docker/overlay2/30f13791b5f5e88c38b8ac1e0ce09c87e89b896b582c7aea751f9621a4703fdb/merged




[root@node153 ~]# df -T -h
文件系统                类型      容量  已用  可用 已用% 挂载点
devtmpfs                devtmpfs  5.7G     0  5.7G    0% /dev
tmpfs                   tmpfs     5.7G     0  5.7G    0% /dev/shm
tmpfs                   tmpfs     5.7G   21M  5.7G    1% /run
tmpfs                   tmpfs     5.7G     0  5.7G    0% /sys/fs/cgroup
/dev/mapper/centos-root xfs        77G  3.4G   74G    5% /
/dev/sda1               xfs      1014M  193M  822M   19% /boot
tmpfs                   tmpfs     5.7G   12K  5.7G    1% /var/lib/kubelet/pods/8cec3cb3-9bb1-4f41-9cdd-f75f04f0e996/volumes/kubernetes.io~secret/calico-kube-controllers-token-cxgs8
tmpfs                   tmpfs     5.7G   12K  5.7G    1% /var/lib/kubelet/pods/b4b55812-6aa4-43f2-8790-f9a39025e697/volumes/kubernetes.io~secret/coredns-token-sssw7
tmpfs                   tmpfs     5.7G   12K  5.7G    1% /var/lib/kubelet/pods/8e2a90f8-0930-4c94-9348-1d3a4d6b58b1/volumes/kubernetes.io~secret/kube-proxy-token-vvl2k
tmpfs                   tmpfs     5.7G   12K  5.7G    1% /var/lib/kubelet/pods/da373248-f3ad-4ed6-9126-212562091ba9/volumes/kubernetes.io~secret/calico-node-token-8xp4l
overlay                 overlay    77G  3.4G   74G    5% /var/lib/docker/overlay2/3922cbbb6c5480bf3b3c89f30fe66dcf812edd19a5289570a630357784b2f2d7/merged
overlay                 overlay    77G  3.4G   74G    5% /var/lib/docker/overlay2/eea507f517189d3cfb074b4209227b4d54d8dc7f47c8af7c27693e66f967d1f8/merged
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/9cad16e85c78fa4e676e634b303fd63c1a23e598ed4bb9da7524418fe6a7cc11/mounts/shm
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/22b7e87887d50d72213dbb8ed6e721fb308d4ede444d7ec0a27f252220360e18/mounts/shm
overlay                 overlay    77G  3.4G   74G    5% /var/lib/docker/overlay2/0343048c3ace3bf422da1382cc57e1a3d26ee55c5e2c941728559259a00d915b/merged
overlay                 overlay    77G  3.4G   74G    5% /var/lib/docker/overlay2/7a51dfdd10cfe5bc0a4c8bd040b42d1d38ef0429d4053ea35c6b21c5614474ef/merged
overlay                 overlay    77G  3.4G   74G    5% /var/lib/docker/overlay2/6f72465c98eacb25f0af408a9f572a2cbe58f2fe20a070fdf5d01b12577d9036/merged
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/ab3f598923acf709d9f7f84152dd82c4cd6010b4bc5f78dede5fdeb655a03fdd/mounts/shm
overlay                 overlay    77G  3.4G   74G    5% /var/lib/docker/overlay2/d3c9d5420d5c9437e59838ef74dc384fa19da373c1029a1b9e02c5182aba8b28/merged
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/d172cb0fbe75e18907e28d5e91b99a221e6132ee1f1e2ef10d9e5d69654f0e42/mounts/shm
overlay                 overlay    77G  3.4G   74G    5% /var/lib/docker/overlay2/749c79299a776dbe0f04f51f641839df6ecd56b5eb5ebb878952fea3a575b4dd/merged
tmpfs                   tmpfs     1.2G     0  1.2G    0% /run/user/0
overlay                 overlay    77G  3.4G   74G    5% /var/lib/docker/overlay2/df9ecd84e78181e958629d06e0be686fb1e89f5c10e22608029b7563e4ea537a/merged
tmpfs                   tmpfs     5.7G   12K  5.7G    1% /var/lib/kubelet/pods/58079662-ea95-43d0-8e29-f40545a6b95b/volumes/kubernetes.io~secret/ks-installer-token-pm9wj
overlay                 overlay    77G  3.4G   74G    5% /var/lib/docker/overlay2/56d02a16238a43aa184e9284bb8c79aa17f65e359fbb1b6708a915b05e22fb9d/merged
shm                     tmpfs      64M     0   64M    0% /var/lib/docker/containers/5b7b24bbb5cd826eb300462941edfaa776ffca2ea6eecf6678c220a09f012cc2/mounts/shm
overlay                 overlay    77G  3.4G   74G    5% /var/lib/docker/overlay2/3bd6a434f4740ed38d086f57425e93c816cd36ba2414495626141f3ddd0de138/merged

内存使用情况

[root@node151 ~]# free -h
              total        used        free      shared  buff/cache   available
Mem:            11G        1.1G        8.7G         20M        1.5G        9.9G
Swap:            0B          0B          0B


[root@node152 ~]# free -h
              total        used        free      shared  buff/cache   available
Mem:            11G        575M        9.6G         28M        1.1G         10G
Swap:            0B          0B          0B


[root@node153 ~]# free -h
              total        used        free      shared  buff/cache   available
Mem:            11G        617M        9.1G         28M        1.5G         10G
Swap:            0B          0B          0B

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