鲲鹏arm64架构下安装KubeSphere
鲲鹏arm64架构下安装KubeSphere
官方参考文档: https://kubesphere.io/zh/docs/quick-start/minimal-kubesphere-on-k8s/
在Kubernetes基础上最小化安装 KubeSphere
前提条件
官方参考文档: https://kubesphere.io/zh/docs/installing-on-kubernetes/introduction/prerequisites/
-
如需在 Kubernetes 上安装 KubeSphere 3.2.1，您的 Kubernetes 版本必须为：1.19.x、1.20.x、1.21.x 或 1.22.x（实验性支持）。
-
确保您的机器满足最低硬件要求：CPU > 1 核，内存 > 2 GB。
-
在安装之前，需要配置 Kubernetes 集群中的默认存储类型。
uname -a
显示架构如下:
Linux localhost.localdomain 4.14.0-115.el7a.0.1.aarch64 #1 SMP Sun Nov 25 20:54:21 UTC 2018 aarch64 aarch64 aarch64 GNU/Linuxkubectl version
显示版本如下:
Client Version: version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.3", GitCommit:"1e11e4a2108024935ecfcb2912226cedeafd99df", GitTreeState:"clean", BuildDate:"2020-10-14T12:50:19Z", GoVersion:"go1.15.2", Compiler:"gc", Platform:"linux/arm64"}
Server Version: version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.3", GitCommit:"1e11e4a2108024935ecfcb2912226cedeafd99df", GitTreeState:"clean", BuildDate:"2020-10-14T12:41:49Z", GoVersion:"go1.15.2", Compiler:"gc", Platform:"linux/arm64"}free -g
显示内存如下:total used free shared buff/cache available
Mem: 127 48 43 1 34 57
Swap: 0 0 0kubectl get sc
显示存储默认 StorageClass如下:
NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE
glusterfs (default) cluster.local/nfs-client-nfs-client-provisioner Delete Immediate true 24h
nfs-storage (default) k8s-sigs.io/nfs-subdir-external-provisioner Delete Immediate false 23h
部署 KubeSphere
确保您的机器满足安装的前提条件之后，可以按照以下步骤安装 KubeSphere。
1 执行以下命令开始安装：
kubectl apply -f https://github.com/kubesphere/ks-installer/releases/download/v3.2.1/kubesphere-installer.yamlkubectl apply -f https://github.com/kubesphere/ks-installer/releases/download/v3.2.1/cluster-configuration.yaml
2 检查安装日志：
kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l app=ks-install -o jsonpath='{.items[0].metadata.name}') -f报错如下:
2022-02-23T16:02:30+08:00 INFO : shell-operator latest
2022-02-23T16:02:30+08:00 INFO : HTTP SERVER Listening on 0.0.0.0:9115
2022-02-23T16:02:30+08:00 INFO : Use temporary dir: /tmp/shell-operator
2022-02-23T16:02:30+08:00 INFO : Initialize hooks manager ...
2022-02-23T16:02:30+08:00 INFO : Search and load hooks ...
2022-02-23T16:02:30+08:00 INFO : Load hook config from '/hooks/kubesphere/installRunner.py'
2022-02-23T16:02:31+08:00 INFO : Load hook config from '/hooks/kubesphere/schedule.sh'
2022-02-23T16:02:31+08:00 INFO : Initializing schedule manager ...
2022-02-23T16:02:31+08:00 INFO : KUBE Init Kubernetes client
2022-02-23T16:02:31+08:00 INFO : KUBE-INIT Kubernetes client is configured successfully
2022-02-23T16:02:31+08:00 INFO : MAIN: run main loop
2022-02-23T16:02:31+08:00 INFO : MAIN: add onStartup tasks
2022-02-23T16:02:31+08:00 INFO : QUEUE add all HookRun@OnStartup
2022-02-23T16:02:31+08:00 INFO : Running schedule manager ...
2022-02-23T16:02:31+08:00 INFO : MSTOR Create new metric shell_operator_live_ticks
2022-02-23T16:02:31+08:00 INFO : MSTOR Create new metric shell_operator_tasks_queue_length
2022-02-23T16:02:31+08:00 ERROR : error getting GVR for kind 'ClusterConfiguration': Get "http://localhost:8080/api?timeout=32s": dial tcp 127.0.0.1:8080: connect: connection refused
2022-02-23T16:02:31+08:00 ERROR : Enable kube events for hooks error: Get "http://localhost:8080/api?timeout=32s": dial tcp 127.0.0.1:8080: connect: connection refused
2022-02-23T16:02:34+08:00 INFO : TASK_RUN Exit: program halts.
原因是8080端口,k8s默认不对外开放
开放8080端口
8080端口访问不了,k8s开放8080端口
https://www.cnblogs.com/liuxingxing/p/13399729.html
https://blog.csdn.net/qq_29274865/article/details/108953259
进入 cd /etc/kubernetes/manifests/vim kube-apiserver.yaml
添加
- --insecure-port=8080- --insecure-bind-address=0.0.0.0重启apiserver
docker restart apiserver容器id
重新执行上面的命令
kubectl delete -f https://github.com/kubesphere/ks-installer/releases/download/v3.2.1/cluster-configuration.yaml
kubectl delete -f https://github.com/kubesphere/ks-installer/releases/download/v3.2.1/kubesphere-installer.yamlkubectl apply -f https://github.com/kubesphere/ks-installer/releases/download/v3.2.1/cluster-configuration.yaml
kubectl apply -f https://github.com/kubesphere/ks-installer/releases/download/v3.2.1/kubesphere-installer.yaml
3 使用 kubectl get pod --all-namespaces 查看所有 Pod 是否在 KubeSphere 的相关命名空间中正常运行。如果是，请通过以下命令检查控制台的端口（默认为 30880）：
kubectl get pod --all-namespaces
显示Error
kubesphere-system ks-installer-d8b656fb4-gb2qg 0/1 Error 0 27s查看日志
kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l app=ks-install -o jsonpath='{.items[0].metadata.name}') -f查看日志报错如下:
standard_init_linux.go:228: exec user process caused: exec format error
原因是arm64架构报错,运行不起来
https://hub.docker.com/
hub官方搜索下镜像有没有arm64的
根本就没有arm64架构的镜像,找了一圈,发现有个:kubespheredev/ks-installer:v3.0.0-arm64 试试
kubectl delete -f https://github.com/kubesphere/ks-installer/releases/download/v3.2.1/cluster-configuration.yaml
kubectl delete -f https://github.com/kubesphere/ks-installer/releases/download/v3.2.1/kubesphere-installer.yamlkubectl apply -f https://github.com/kubesphere/ks-installer/releases/download/v3.2.1/cluster-configuration.yaml
kubectl apply -f https://github.com/kubesphere/ks-installer/releases/download/v3.2.1/kubesphere-installer.yaml下载镜像
docker pull kubespheredev/ks-installer:v3.0.0-arm64在使用rancher去修改deployments文件,或下载yaml文件去修改
由于我的k8s master节点是arm64架构的,kubesphere/ks-installer 官方没有arm64的镜像
kubesphere/ks-installer:v3.2.1修改为 kubespheredev/ks-installer:v3.0.0-arm64
节点选择指定master节点部署报错如下:
TASK [common : Kubesphere | Creating common component manifests] ***************
failed: [localhost] (item={'path': 'etcd', 'file': 'etcd.yaml'}) => {"ansible_loop_var": "item", "changed": false, "item": {"file": "etcd.yaml", "path": "etcd"}, "msg": "AnsibleUndefinedVariable: 'dict object' has no attribute 'etcdVolumeSize'"}
failed: [localhost] (item={'name': 'mysql', 'file': 'mysql.yaml'}) => {"ansible_loop_var": "item", "changed": false, "item": {"file": "mysql.yaml", "name": "mysql"}, "msg": "AnsibleUndefinedVariable: 'dict object' has no attribute 'mysqlVolumeSize'"}
failed: [localhost] (item={'path': 'redis', 'file': 'redis.yaml'}) => {"ansible_loop_var": "item", "changed": false, "item": {"file": "redis.yaml", "path": "redis"}, "msg": "AnsibleUndefinedVariable: 'dict object' has no attribute 'redisVolumSize'"}原因是版本对不上,使用v3.2.1版本,镜像确是v3.0.0-arm64
下面使用v3.0.0版本试试
使用v3.0.0版本
kubectl apply -f https://github.com/kubesphere/ks-installer/releases/download/v3.0.0/kubesphere-installer.yamlkubectl apply -f https://github.com/kubesphere/ks-installer/releases/download/v3.0.0/cluster-configuration.yaml
在使用rancher去修改deployments文件或者下载v3.0.0的yaml文件,并修改
kubesphere-installer.yaml
cluster-configuration.yamlkubesphere-installer.yaml文件修改如下
由于我的k8s master节点是arm64架构的,kubesphere/ks-installer 官方没有arm64的镜像
kubesphere/ks-installer:v3.0.0修改为 kubespheredev/ks-installer:v3.0.0-arm64
节点选择指定master节点部署cluster-configuration.yaml文件修改
endpointIps: 192.168.xxx.xx 修改为k8s master节点IP
不报错,ks-installer也跑起来了,但是其他的没有arm64镜像,其他deployments都跑不起来 ks-controller-manager报错
把所有deployments镜像都换成arm64架构的,节点选择k8s master节点
kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l app=ks-install -o jsonpath='{.items[0].metadata.name}') -fkubectl get pod --all-namespacesdocker pull kubespheredev/ks-installer:v3.0.0-arm64
docker pull bobsense/redis-arm64 要去掉挂载的存储pvc,不然报错
docker pull kubespheredev/ks-controller-manager:v3.2.1
docker pull kubespheredev/ks-console:v3.0.0-arm64
docker pull kubespheredev/ks-apiserver:v3.2.0除了ks-controller-manager,其他都运行起来了kubectl get svc/ks-console -n kubesphere-system
显示如下:
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
ks-console NodePort 10.1.4.225 <none> 80:30880/TCP 6h12m再次查看日志
kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l app=ks-install -o jsonpath='{.items[0].metadata.name}') -f
最后显示如下:以为成功了
Console: http://192.168.xxx.xxx:30880
Account: admin
Password: P@88w0rd
kubectl logs ks-controller-manager-646b8fff9f-pd7w7 --namespace=kubesphere-system
ks-controller-manager报错如下:
W0224 11:36:55.643227 1 client_config.go:615] Neither --kubeconfig nor --master was specified. Using the inClusterConfig. This might not work.
E0224 11:36:55.649703 1 server.go:101] failed to connect to ldap service, please check ldap status, error: factory is not able to fill the pool: LDAP Result Code 200 "Network Error": dial tcp: lookup openldap.kubesphere-system.svc on 10.1.0.10:53: no such host
登录报错: 可能是ks-controller-manager没成功运行
日志如下:
request to http://ks-apiserver.kubesphere-system.svc/oauth/token failed, reason: connect ECONNREFUSED 10.1.146.137:80
应该是openldap没启动成功的原因
查看StatefulSets的openldap日志
提示有2个StorageClasses,删除一个之后就运行成功了
persistentvolumeclaims "openldap-pvc-openldap-0" is forbidden: Internal error occurred: 2 default StorageClasses were found
删除StorageClasses
查看
kubectl get sc
显示如下:之前有2条记录,是因为我删除了一条
NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE
nfs-storage (default) k8s-sigs.io/nfs-subdir-external-provisioner Delete Immediate false 40h删除
kubectl delete sc glusterfs
删除StorageClasses 后,只有一个StorageClasses 了, openldap正常运行了,ks-controller-manager也正常运行了,有希望了
所有pod都正常运行了,但是登录还是一样的有问题.查看日志
ks-apiserver-556f698dfb-5p2fc
日志如下:
E0225 10:40:17.460271 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha1.HelmApplication: failed to list *v1alpha1.HelmApplication: the server could not find the requested resource (get helmapplications.application.kubesphere.io)
E0225 10:40:17.548278 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha1.HelmRepo: failed to list *v1alpha1.HelmRepo: the server could not find the requested resource (get helmrepos.application.kubesphere.io)
E0225 10:40:17.867914 1 reflector.go:138] pkg/models/openpitrix/interface.go:89: Failed to watch *v1alpha1.HelmCategory: failed to list *v1alpha1.HelmCategory: the server could not find the requested resource (get helmcategories.application.kubesphere.io)
E0225 10:40:18.779136 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha1.HelmRelease: failed to list *v1alpha1.HelmRelease: the server could not find the requested resource (get helmreleases.application.kubesphere.io)
E0225 10:40:19.870229 1 reflector.go:138] pkg/models/openpitrix/interface.go:90: Failed to watch *v1alpha1.HelmRepo: failed to list *v1alpha1.HelmRepo: the server could not find the requested resource (get helmrepos.application.kubesphere.io)
E0225 10:40:20.747617 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha1.HelmCategory: failed to list *v1alpha1.HelmCategory: the server could not find the requested resource (get helmcategories.application.kubesphere.io)
E0225 10:40:23.130177 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha1.HelmApplicationVersion: failed to list *v1alpha1.HelmApplicationVersion: the server could not find the requested resource (get helmapplicationversions.application.kubesphere.io)
ks-console-65f46d7649-5zt8c
日志如下:
<-- GET / 2022/02/25T10:41:28.642
{ UnauthorizedError: Not Login
at Object.throw (/opt/kubesphere/console/server/server.js:31701:11)
at getCurrentUser (/opt/kubesphere/console/server/server.js:9037:14)
at renderView (/opt/kubesphere/console/server/server.js:23231:46)
at dispatch (/opt/kubesphere/console/server/server.js:6870:32)
at next (/opt/kubesphere/console/server/server.js:6871:18)
at /opt/kubesphere/console/server/server.js:70183:16
at dispatch (/opt/kubesphere/console/server/server.js:6870:32)
at next (/opt/kubesphere/console/server/server.js:6871:18)
at /opt/kubesphere/console/server/server.js:77986:37
at dispatch (/opt/kubesphere/console/server/server.js:6870:32)
at next (/opt/kubesphere/console/server/server.js:6871:18)
at /opt/kubesphere/console/server/server.js:70183:16
at dispatch (/opt/kubesphere/console/server/server.js:6870:32)
at next (/opt/kubesphere/console/server/server.js:6871:18)
at /opt/kubesphere/console/server/server.js:77986:37
at dispatch (/opt/kubesphere/console/server/server.js:6870:32) message: 'Not Login' }
--> GET / 302 6ms 43b 2022/02/25T10:41:28.648
<-- GET /login 2022/02/25T10:41:28.649
{ FetchError: request to http://ks-apiserver.kubesphere-system.svc/kapis/config.kubesphere.io/v1alpha2/configs/oauth failed, reason: connect ECONNREFUSED 10.1.144.129:80
at ClientRequest.<anonymous> (/opt/kubesphere/console/server/server.js:80604:11)
at ClientRequest.emit (events.js:198:13)
at Socket.socketErrorListener (_http_client.js:392:9)
at Socket.emit (events.js:198:13)
at emitErrorNT (internal/streams/destroy.js:91:8)
at emitErrorAndCloseNT (internal/streams/destroy.js:59:3)
at process._tickCallback (internal/process/next_tick.js:63:19)
message:
'request to http://ks-apiserver.kubesphere-system.svc/kapis/config.kubesphere.io/v1alpha2/configs/oauth failed, reason: connect ECONNREFUSED 10.1.144.129:80',
type: 'system',
errno: 'ECONNREFUSED',
code: 'ECONNREFUSED' }
--> GET /login 200 7ms 14.82kb 2022/02/25T10:41:28.656
ks-controller-manager-548545f4b4-w4wmx
日志如下:
E0225 10:41:41.633013 1 reflector.go:138] github.com/kubernetes-csi/external-snapshotter/client/v4/informers/externalversions/factory.go:117: Failed to watch *v1.VolumeSnapshotClass: failed to list *v1.VolumeSnapshotClass: the server could not find the requested resource (get volumesnapshotclasses.snapshot.storage.k8s.io)
E0225 10:41:41.634349 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha2.GroupBinding: failed to list *v1alpha2.GroupBinding: the server could not find the requested resource (get groupbindings.iam.kubesphere.io)
E0225 10:41:41.722377 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha2.Group: failed to list *v1alpha2.Group: the server could not find the requested resource (get groups.iam.kubesphere.io)
E0225 10:41:42.636612 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha2.GroupBinding: failed to list *v1alpha2.GroupBinding: the server could not find the requested resource (get groupbindings.iam.kubesphere.io)
E0225 10:41:42.875652 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha2.Group: failed to list *v1alpha2.Group: the server could not find the requested resource (get groups.iam.kubesphere.io)
E0225 10:41:42.964819 1 reflector.go:138] github.com/kubernetes-csi/external-snapshotter/client/v4/informers/externalversions/factory.go:117: Failed to watch *v1.VolumeSnapshotClass: failed to list *v1.VolumeSnapshotClass: the server could not find the requested resource (get volumesnapshotclasses.snapshot.storage.k8s.io)
E0225 10:41:45.177641 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha2.GroupBinding: failed to list *v1alpha2.GroupBinding: the server could not find the requested resource (get groupbindings.iam.kubesphere.io)
E0225 10:41:45.327393 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha2.Group: failed to list *v1alpha2.Group: the server could not find the requested resource (get groups.iam.kubesphere.io)
E0225 10:41:46.164454 1 reflector.go:138] github.com/kubernetes-csi/external-snapshotter/client/v4/informers/externalversions/factory.go:117: Failed to watch *v1.VolumeSnapshotClass: failed to list *v1.VolumeSnapshotClass: the server could not find the requested resource (get volumesnapshotclasses.snapshot.storage.k8s.io)
E0225 10:41:49.011152 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha2.Group: failed to list *v1alpha2.Group: the server could not find the requested resource (get groups.iam.kubesphere.io)
E0225 10:41:50.299769 1 reflector.go:138] github.com/kubernetes-csi/external-snapshotter/client/v4/informers/externalversions/factory.go:117: Failed to watch *v1.VolumeSnapshotClass: failed to list *v1.VolumeSnapshotClass: the server could not find the requested resource (get volumesnapshotclasses.snapshot.storage.k8s.io)
E0225 10:41:50.851105 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha2.GroupBinding: failed to list *v1alpha2.GroupBinding: the server could not find the requested resource (get groupbindings.iam.kubesphere.io)
E0225 10:41:56.831265 1 helm_category_controller.go:158] get helm category: ctg-uncategorized failed, error: no matches for kind "HelmCategory" in version "application.kubesphere.io/v1alpha1"
E0225 10:41:56.923487 1 helm_category_controller.go:176] create helm category: uncategorized failed, error: no matches for kind "HelmCategory" in version "application.kubesphere.io/v1alpha1"
E0225 10:41:58.696406 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha2.GroupBinding: failed to list *v1alpha2.GroupBinding: the server could not find the requested resource (get groupbindings.iam.kubesphere.io)
E0225 10:41:59.876998 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha2.Group: failed to list *v1alpha2.Group: the server could not find the requested resource (get groups.iam.kubesphere.io)
E0225 10:42:01.266422 1 reflector.go:138] github.com/kubernetes-csi/external-snapshotter/client/v4/informers/externalversions/factory.go:117: Failed to watch *v1.VolumeSnapshotClass: failed to list *v1.VolumeSnapshotClass: the server could not find the requested resource (get volumesnapshotclasses.snapshot.storage.k8s.io)
E0225 10:42:11.724869 1 helm_category_controller.go:158] get helm category: ctg-uncategorized failed, error: no matches for kind "HelmCategory" in version "application.kubesphere.io/v1alpha1"
E0225 10:42:11.929837 1 helm_category_controller.go:176] create helm category: uncategorized failed, error: no matches for kind "HelmCategory" in version "application.kubesphere.io/v1alpha1"
E0225 10:42:12.355338 1 reflector.go:138] pkg/client/informers/externalversions/factory.go:128: Failed to watch *v1alpha2.GroupBinding: failed to list *v1alpha2.GroupBinding: the server could not find the requested resource (get groupbindings.iam.kubesphere.io)
I0225 10:42:15.625073 1 leaderelection.go:253] successfully acquired lease kubesphere-system/ks-controller-manager-leader-election
I0225 10:42:15.625301 1 globalrolebinding_controller.go:122] Starting GlobalRoleBinding controller
I0225 10:42:15.625343 1 globalrolebinding_controller.go:125] Waiting for informer caches to sync
I0225 10:42:15.625365 1 globalrolebinding_controller.go:137] Starting workers
I0225 10:42:15.625351 1 snapshotclass_controller.go:102] Waiting for informer cache to sync.
I0225 10:42:15.625391 1 globalrolebinding_controller.go:143] Started workers
I0225 10:42:15.625380 1 capability_controller.go:110] Waiting for informer caches to sync
I0225 10:42:15.625449 1 capability_controller.go:123] Started workers
I0225 10:42:15.625447 1 basecontroller.go:59] Starting controller: loginrecord-controller
I0225 10:42:15.625478 1 globalrolebinding_controller.go:205] Successfully synced key:authenticated
I0225 10:42:15.625481 1 basecontroller.go:60] Waiting for informer caches to sync for: loginrecord-controller
I0225 10:42:15.625488 1 clusterrolebinding_controller.go:114] Starting ClusterRoleBinding controller
I0225 10:42:15.625546 1 clusterrolebinding_controller.go:117] Waiting for informer caches to sync
I0225 10:42:15.625540 1 basecontroller.go:59] Starting controller: group-controller
I0225 10:42:15.625515 1 basecontroller.go:59] Starting controller: groupbinding-controller
I0225 10:42:15.625596 1 basecontroller.go:60] Waiting for informer caches to sync for: group-controller
I0225 10:42:15.625615 1 basecontroller.go:60] Waiting for informer caches to sync for: groupbinding-controller
I0225 10:42:15.625579 1 clusterrolebinding_controller.go:122] Starting workers
I0225 10:42:15.625480 1 certificatesigningrequest_controller.go:109] Starting CSR controller
I0225 10:42:15.625681 1 certificatesigningrequest_controller.go:112] Waiting for csrInformer caches to sync
就差那么一点点就可以了,等下次解决了在补上吧
参考链接:
https://kubesphere.io/zh/docs/quick-start/minimal-kubesphere-on-k8s/
https://www.yuque.com/leifengyang/oncloud/gz1sls#BIxCW
相关文章：
鲲鹏arm64架构下安装KubeSphere
鲲鹏arm64架构下安装KubeSphere 官方参考文档: https://kubesphere.io/zh/docs/quick-start/minimal-kubesphere-on-k8s/ 在Kubernetes基础上最小化安装 KubeSphere 前提条件 官方参考文档: https://kubesphere.io/zh/docs/installing-on-kubernetes/introduction/prerequi…...
python 函数-02-返回值注释格式
01 函数返回值 1）python中函数可以没有返回值，也可以有通过return的方式 – 【特殊性，区别于java c#等】 2）返回值可以是一个或者多个，多个时通过逗号隔开 – 【特殊性，区别于java c#等】 3）多…...
【前端素材】推荐优质后台管理系统Upcube平台模板（附源码）
一、需求分析 后台管理系统在多个层次上提供了丰富的功能和细致的管理手段，帮助管理员轻松管理和控制系统的各个方面。其灵活性和可扩展性使得后台管理系统成为各种网站、应用程序和系统不可或缺的管理工具。 当我们从多个层次来详细分析后台管理系统时࿰…...
可视化 RAG 数据 — 用于检索增强生成的 EDA
原文地址：Visualize your RAG Data — EDA for Retrieval-Augmented Generation 2024 年 2 月 8 日 Github：https://github.com/Renumics/rag-demo/blob/main/notebooks/visualize_rag_tutorial.ipynb 为探索Spotlight中的数据，我们使用Pa…...
数学建模论文、代码百度网盘链接
1.[2018中国大数据年终总决赛冠军] 金融市场板块划分与轮动规律挖掘与可视化问题 2.[2019第九届MathorCup数模二等奖] 数据驱动的城市轨道交通网络优化策略 3.[2019电工杯一等奖] 露天停车场停车位的优化设计 4.[2019数学中国网络数模一等奖] 基于机器学习的保险业数字化变革…...
mysql 迁移-data目录拷贝方式
背景：从服务器进水坏掉，50多G的数据库要重新做主从，但以导入导出的方式太慢，简直是灾难性的，一夜都没好，只好想到了拷贝mysql数据文件的方式 拷贝的数据文件的前提 1.数据库版本必需一致（可以…...
学习 LangChain 的 Passing data through
学习 LangChain 的 Passing data through 1. Passing data through2. 示例 1. Passing data through RunnablePassthrough 允许不改变或添加额外的键来传递输入。这通常与 RunnableParallel 结合使用，将数据分配给映射中的新键。 RunnablePassthrough() 单独调用&…...
C# OpenVINO PaddleSeg实时人像抠图PP-MattingV2
目录 效果 项目 代码 下载 C# OpenVINO 百度PaddleSeg实时人像抠图PP-MattingV2 效果 项目 代码 using OpenCvSharp; using Sdcb.OpenVINO; using System; using System.Diagnostics; using System.Drawing; using System.Security.Cryptography; using System.Text; us…...
【Android 11】AOSP Settings WIFI随机MAC地址功能
AOSP Settings WIFI随机MAC地址功能 背景 最近客户提出了想要实现随机WIFIMAC地址的功能（我们默认WIFI的MAC地址是固定的）。网上搜到了一篇不错的文章，本次改动也是基于这个来写的。 由于客户指定使用的settings是AOSP的，所以在…...
dmrman备份还原
脱机还原工具-dmrman 前言 根据达梦官网文档整理 一、概述 DMRMAN 命令行设置参数执行又可分为命令行指定脚本、命令行指定语句两种执行方式。 指定语句 $ DMRMAN RMAN>BACKUP DATABASE/dmdata/data/DAMENG/dm.ini;指定脚本 创建一个名为 cmd_file.txt 的文件&#x…...
网页403错误（Spring Security报异常 Encoded password does not look like BCrypt）
这个错误通常表现为"403 Forbidden"或"HTTP Status 403"，它指的是访问资源被服务器理解但拒绝授权。换句话说，服务器可以理解你请求看到的页面，但它拒绝给你权限。 也就是说很可能测试给定的参数有问题，后端…...
单细胞多组学整合与对齐的计算方法
Computational Methods for Single-cell Multi-omics Integration and Alignment Bioinformatics-2022-密西根大学 关键词：单细胞;多组学;机器学习;无监督学习;集成 摘要 最近发展起来的生成单细胞基因组数据的技术在生物学领域产生了革命性的影响。多组学测定提…...
33.openeuler OECA认证模拟题16
一 、选择题 1.如何查看系统支持的 shell? A、cat /etc/passwd B、cat /etc/shells C、echo SSHELL D、echo $0 答案 ：B 2.下列哪项不是 shell的功能? A 、 用户界面，提供用户与内核交互接口 B 、 命令解释器 C 、提供编译环境 D 、 提供各种管理工具，…...
javaScript数组去重的几种实现方式——适用非引用数据去重
最传统的使用循环遍历 //最传统的使用循环遍历 function getUnique(arr) {let newArr [];for (let i 0; i < arr.length; i) {for (let j i 1; j < arr.length; j) {if (arr[i] arr[j]) {i; //相同丢掉前面的元素}}newArr.push(arr[i]);}return newArr; } 利用Set实…...
Nexus Repository Manager
Nexus Repository Manager https://s01.oss.sonatype.org/#welcome https://mvnrepository.com/-CSDN博客...
Python世界之运算符
一、算术运算符 以下假设变量： a10，b20： 运算符 描述 实例 加 - 两个对象相加 a b 输出结果 30 - 减 - 得到负数或是一个数减去另一个数 a - b 输出结果 -10 * 乘 - 两个数相乘或是返回一个被重复若干次的字符串 a * b 输出结…...
蓝桥杯倒计时47天！DFS基础——图的遍历
倒计时47天！ 深度优先搜索——DFS 温馨提示：学习dfs之前最好先了解一下递归的思想。 DFS基础——图的遍历 仙境诅咒 问题描述 在一片神秘的仙境中，有N位修仙者，他们各自在仙境中独立修炼，拥有自己独特的修炼之道…...
体验LobeChat搭建私人聊天应用
LobeChat是什么 LobeChat 是开源的高性能聊天机器人框架，支持语音合成、多模态、可扩展的（Function Call）插件系统。支持一键免费部署私人 ChatGPT/LLM 网页应用程序。 地址：https://github.com/lobehub/lobe-chat 为什么要用Lobe…...
ClickHouse 指南（三）最佳实践 -- 主键稀疏索引
在ClickHouse主索引的实用介绍 ClickHouse release 24.1, 2024-01-30 1、简介 在本指南中，我们将深入研究ClickHouse索引。我们将详细说明和讨论: ClickHouse中的索引与传统的关系数据库管理系统有何不同ClickHouse是如何构建和使用表的稀疏主索引的什么是在Clic…...
【Nginx】Nginx配置反向代理 和 https
nginx.conf配置 进入linux /etc/nginx/ 打开nginx.conf 进行以下配置 http {include mime.types;default_type application/octet-stream;sendfile on;keepalive_timeout 65;server {#监听443端口listen 443 ssl;#你的域名server_name huiblog.top;#ssl证书的pe…...
Psychopy音频的使用
Psychopy音频的使用 本文主要解决以下问题： 指定音频引擎与设备；播放音频文件 本文所使用的环境： Python3.10 numpy2.2.6 psychopy2025.1.1 psychtoolbox3.0.19.14 一、音频配置 Psychopy文档链接为Sound - for audio playback — Psy…...
：观察者模式)
JS设计模式(4)：观察者模式
JS设计模式(4):观察者模式 一、引入 在开发中，我们经常会遇到这样的场景：一个对象的状态变化需要自动通知其他对象，比如： 电商平台中，商品库存变化时需要通知所有订阅该商品的用户；新闻网站中࿰…...
jmeter聚合报告中参数详解
sample、average、min、max、90%line、95%line,99%line、Error错误率、吞吐量Thoughput、KB/sec每秒传输的数据量 sample（样本数） 表示测试中发送的请求数量，即测试执行了多少次请求。 单位，以个或者次数表示。 示例：…...
nnUNet V2修改网络——暴力替换网络为UNet++
更换前，要用nnUNet V2跑通所用数据集，证明nnUNet V2、数据集、运行环境等没有问题 阅读nnU-Net V2 的 U-Net结构，初步了解要修改的网络，知己知彼，修改起来才能游刃有余。 U-Net存在两个局限，一是网络的最佳深度因应用场景而异，这取决于任务的难度和可用于训练的标注数…...
HTML前端开发：JavaScript 获取元素方法详解
作为前端开发者，高效获取 DOM 元素是必备技能。以下是 JS 中核心的获取元素方法，分为两大系列： 一、getElementBy... 系列 传统方法，直接通过 DOM 接口访问，返回动态集合（元素变化会实时更新）。…...
SQL Server 触发器调用存储过程实现发送 HTTP 请求
文章目录 需求分析解决第 1 步：前置条件，启用 OLE 自动化方式 1：使用 SQL 实现启用 OLE 自动化方式 2：Sql Server 2005启动OLE自动化方式 3：Sql Server 2008启动OLE自动化第 2 步：创建存储过程第 3 步：创建触发器扩展 - 如何调试？第 1 步：登录 SQL Server 2008第 2 步…...
Xela矩阵三轴触觉传感器的工作原理解析与应用场景
Xela矩阵三轴触觉传感器通过先进技术模拟人类触觉感知，帮助设备实现精确的力测量与位移监测。其核心功能基于磁性三维力测量与空间位移测量，能够捕捉多维触觉信息。该传感器的设计不仅提升了触觉感知的精度，还为机器人、医疗设备和制造业的智…...
【Linux】Linux安装并配置RabbitMQ
目录 1. 安装 Erlang 2. 安装 RabbitMQ 2.1.添加 RabbitMQ 仓库 2.2.安装 RabbitMQ 3.配置 3.1.启动和管理服务 4. 访问管理界面 5.安装问题 6.修改密码 7.修改端口 7.1.找到文件 7.2.修改文件 1. 安装 Erlang 由于 RabbitMQ 是用 Erlang 编写的，需要先安…...
Linux安全加固：从攻防视角构建系统免疫
Linux安全加固：从攻防视角构建系统免疫 构建坚不可摧的数字堡垒 引言：攻防对抗的新纪元 在日益复杂的网络威胁环境中，Linux系统安全已从被动防御转向主动免疫。2023年全球网络安全报告显示，高级持续性威胁（APT）攻击同比增长65%，平均入侵停留时间缩短至48小时。本章将从…...
CSS 工具对比：UnoCSS vs Tailwind CSS，谁是你的菜？
在现代前端开发中，Utility-First (功能优先) CSS 框架已经成为主流。其中，Tailwind CSS 无疑是市场的领导者和标杆。然而，一个名为 UnoCSS 的新星正以其惊人的性能和极致的灵活性迅速崛起。 这篇文章将深入探讨这两款工具的核心理念、技术差…...