前言：
现时姐妹们对“ubuntualternateiso”大概比较关怀，同学们都想要分析一些“ubuntualternateiso”的相关资讯。那么小编也在网摘上网罗了一些关于“ubuntualternateiso””的相关文章，希望朋友们能喜欢，你们快快来学习一下吧！书籍来源：《CKA/CKAD应试指南：从Docker到Kubernetes完全攻略》
一边学习一边整理老师的课程内容及试验笔记，并与大家分享，侵权即删，谢谢支持！
附上汇总贴：CKA备考实验 | 汇总-CSDN博客
本章所有实验均放在一个目录helm里，先把目录helm创建出来。
步骤1：创建helm目录，并cd进去。
##########实操验证##########[root@vms10 ~]# mkdir helm[root@vms10 ~]# cd helm/[root@vms10 helm]#
本章所有实验均在命名容间nshelm里操作，创建并切换至命名空间nshelm。
##########实操验证##########[root@vms10 helm]# kubectl create ns nshelmnamespace/nshelm created[root@vms10 helm]# [root@vms10 helm]# kubens nshelm Context "kubernetes-admin@kubernetes" modified.Active namespace is "nshelm".[root@vms10 helm]#
步骤2：如果要部署哪个应用，就到仓库里查询这个应用对应的chart，假设要查询redis。
##########实操验证##########[root@vms10 helm]# helm search repo redisNAME CHART VERSION APP VERSION DESCRIPTION github/prometheus-redis-exporter 3.5.1 1.3.4 DEPRECATED Prometheus exporter for Redis metrics github/redis 10.5.7 5.0.7 DEPRECATED Open source, advanced key-value stor...github/redis-ha 4.4.5 5.0.6 Highly available Kubernetes implementation of R...stable/redis 1.1.15 4.0.8 Open source, advanced key-value store. It is of...stable/redis-ha 2.0.1 Highly available Redis cluster with multiple se...github/sensu 0.2.3 0.28 Sensu monitoring framework backed by the Redis ...stable/sensu 0.2.0 Sensu monitoring framework backed by the Redis ...[root@vms10 helm]#
如果想查询mysql对应的chart，则执行helm search repo mysql，下面开始部署mysql。
步骤3：通过helm pull把chart对应的包下载下来，命令如下。
##########实操验证##########[root@vms10 helm]# helm pull github/mysql --version=1.6.8[root@vms10 helm]# lsmysql-1.6.8.tgz[root@vms10 helm]#
注意：这里如果不加--version选项的话，则安装的是helm源里最新的版本。
步骤4：解压并进入mysql目录。
##########实操验证##########[root@vms10 helm]# tar zxvf mysql-1.6.8.tgz mysql/Chart.yamltar: mysql/Chart.yaml: implausibly old time stamp 1970-01-01 08:00:00mysql/values.yamltar: mysql/values.yaml: implausibly old time stamp 1970-01-01 08:00:00mysql/templates/NOTES.txttar: mysql/templates/NOTES.txt: implausibly old time stamp 1970-01-01 08:00:00mysql/templates/_helpers.tpltar: mysql/templates/_helpers.tpl: implausibly old time stamp 1970-01-01 08:00:00mysql/templates/configurationFiles-configmap.yamltar: mysql/templates/configurationFiles-configmap.yaml: implausibly old time stamp 1970-01-01 08:00:00mysql/templates/deployment.yamltar: mysql/templates/deployment.yaml: implausibly old time stamp 1970-01-01 08:00:00mysql/templates/initializationFiles-configmap.yamltar: mysql/templates/initializationFiles-configmap.yaml: implausibly old time stamp 1970-01-01 08:00:00mysql/templates/pvc.yamltar: mysql/templates/pvc.yaml: implausibly old time stamp 1970-01-01 08:00:00mysql/templates/secrets.yamltar: mysql/templates/secrets.yaml: implausibly old time stamp 1970-01-01 08:00:00mysql/templates/serviceaccount.yamltar: mysql/templates/serviceaccount.yaml: implausibly old time stamp 1970-01-01 08:00:00mysql/templates/servicemonitor.yamltar: mysql/templates/servicemonitor.yaml: implausibly old time stamp 1970-01-01 08:00:00mysql/templates/svc.yamltar: mysql/templates/svc.yaml: implausibly old time stamp 1970-01-01 08:00:00mysql/templates/tests/test-configmap.yamltar: mysql/templates/tests/test-configmap.yaml: implausibly old time stamp 1970-01-01 08:00:00mysql/templates/tests/test.yamltar: mysql/templates/tests/test.yaml: implausibly old time stamp 1970-01-01 08:00:00mysql/.helmignoretar: mysql/.helmignore: implausibly old time stamp 1970-01-01 08:00:00mysql/README.mdtar: mysql/README.md: implausibly old time stamp 1970-01-01 08:00:00[root@vms10 helm]# lsmysql mysql-1.6.8.tgz[root@vms10 helm]# cd mysql/[root@vms10 mysql]# lsChart.yaml README.md templates values.yaml[root@vms10 mysql]#
Chart.yaml是chart的描述信息。
README.md是此chart的帮助信息。
templates目录里是各种模板，比如定义svc、定义pvc等。
values.yaml里记录的是chart的各种信息，比如镜像是什么，root密码是什么，是否使用持久性存储等。
步骤5：编辑values.yaml并按照如下修改。
指定要使用的镜像，按如下修改。
image: "hub.c.163.com/library/mysql"imageTag: "latest"strategy: type: Recreate busybox: image: "busybox" tag: "latest" testFramework： enabled:false image: "bats/bats" tag: "1.2.1"
上面代码中最前面的数字表示行数。
指定mysql的root密码，把最前面的#去掉，注意这里前面不能留有空格。
mysqlRootPassword: redhat
如果要创建普通用户和密码，就修改如下两行，这里没有指定。
# mysql User：## Default: random 10 character string # mysqlPassword:
是否要使用持久性存储，如果不使用的话，就把enabled的值改成false。
persistence： enabled: false
##########实操验证##########[root@vms10 mysql]# cat values.yaml ## mysql image version## ref: : "hub.c.163.com/library/mysql"imageTag: "latest"strategy: type: Recreatebusybox: image: "busybox" tag: "latest"testFramework: enabled: false image: "bats/bats" tag: "1.2.1" imagePullPolicy: IfNotPresent securityContext: {}## Specify password for root user#### Default: random 10 character stringmysqlRootPassword: redhat## Create a database user### mysqlUser:## Default: random 10 character string# mysqlPassword:## Allow unauthenticated access, uncomment to enable### mysqlAllowEmptyPassword: true## Create a database### mysqlDatabase:## Specify an imagePullPolicy (Required)## It's recommended to change this to 'Always' if the image tag is 'latest'## ref: : IfNotPresent## Additionnal arguments that are passed to the MySQL container.## For example use --default-authentication-plugin=mysql_native_password if older clients need to## connect to a MySQL 8 instance.args: []extraVolumes: | # - name: extras # emptyDir: {}extraVolumeMounts: | # - name: extras # mountPath: /usr/share/extras # readOnly: trueextraInitContainers: | # - name: do-something # image: busybox # command: ['do', 'something']## A string to add extra environment variables# extraEnvVars: |# - name: EXTRA_VAR# value: "extra"# Optionally specify an array of imagePullSecrets.# Secrets must be manually created in the namespace.# ref: imagePullSecrets: # - name: myRegistryKeySecretName## Node selector## ref: : {}## Affinity## ref: : {}## Tolerations for pod assignment## Ref: : []livenessProbe: initialDelaySeconds: 30 periodSeconds: 10 timeoutSeconds: 5 successThreshold: 1 failureThreshold: 3readinessProbe: initialDelaySeconds: 5 periodSeconds: 10 timeoutSeconds: 1 successThreshold: 1 failureThreshold: 3## Persist data to a persistent volumepersistence: enabled: false ## database data Persistent Volume Storage Class ## If defined, storageClassName: <storageClass> ## If set to "-", storageClassName: "", which disables dynamic provisioning ## If undefined (the default) or set to null, no storageClassName spec is ## set, choosing the default provisioner. (gp2 on AWS, standard on ## GKE, AWS & OpenStack) ## # storageClass: "-" accessMode: ReadWriteOnce size: 8Gi annotations: {}## Use an alternate scheduler, e.g. "stork".## ref: schedulerName:## Security contextsecurityContext: enabled: false runAsUser: 999 fsGroup: 999## Configure resource requests and limits## ref: : requests: memory: 256Mi cpu: 100m# Custom mysql configuration files pathconfigurationFilesPath: /etc/mysql/conf.d/# Custom mysql configuration files used to override default mysql settingsconfigurationFiles: {}# mysql.cnf: |-# [mysqld]# skip-name-resolve# ssl-ca=/ssl/ca.pem# ssl-cert=/ssl/server-cert.pem# ssl-key=/ssl/server-key.pem# Custom mysql init SQL files used to initialize the databaseinitializationFiles: {}# first-db.sql: |-# CREATE DATABASE IF NOT EXISTS first DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;# second-db.sql: |-# CREATE DATABASE IF NOT EXISTS second DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;# To enaable the mysql X Protocol's port# .. will expose the port 33060# .. Note the X Plugin needs installation# ref: : port: enabled: falsemetrics: enabled: false image: prom/mysqld-exporter imageTag: v0.10.0 imagePullPolicy: IfNotPresent resources: {} annotations: {} # prometheus.io/scrape: "true" # prometheus.io/port: "9104" livenessProbe: initialDelaySeconds: 15 timeoutSeconds: 5 readinessProbe: initialDelaySeconds: 5 timeoutSeconds: 1 flags: [] serviceMonitor: enabled: false additionalLabels: {}## Configure the service## ref: : annotations: {} ## Specify a service type ## ref: type: ClusterIP port: 3306 # nodePort: 32000 # loadBalancerIP:## Pods Service Account## ref: : ## Specifies whether a ServiceAccount should be created ## create: false ## The name of the ServiceAccount to use. ## If not set and create is true, a name is generated using the mariadb.fullname template # name:ssl: enabled: false secret: mysql-ssl-certs certificates:# - name: mysql-ssl-certs# ca: |-# -----BEGIN CERTIFICATE-----# ...# -----END CERTIFICATE-----# cert: |-# -----BEGIN CERTIFICATE-----# ...# -----END CERTIFICATE-----# key: |-# -----BEGIN RSA PRIVATE KEY-----# ...# -----END RSA PRIVATE KEY-----## Populates the 'TZ' system timezone environment variable## ref: Default: nil (mysql will use image's default timezone, normally UTC)## Example: 'Australia/Sydney'# timezone:# Deployment AnnotationsdeploymentAnnotations: {}# To be added to the database server pod(s)podAnnotations: {}podLabels: {}## Set pod priorityClassName# priorityClassName: {}## Init container resources defaultsinitContainer: resources: requests: memory: 10Mi cpu: 10m[root@vms10 mysql]# 注意：可以用vim编辑器搜索persistence。
关于values.yaml的其他部分，保持默认值即可，保存退出。
部署应用的语法为：
helm install <名字> <chart目录>
步骤6：在当前目录里执行安装操作。
##########实操验证##########[root@vms10 mysql]# helm install db .NAME: dbLAST DEPLOYED: Wed Sep 27 14:25:20 2023NAMESPACE: nshelmSTATUS: deployedREVISION: 1TEST SUITE: NoneNOTES:MySQL can be accessed via port 3306 on the following DNS name from within your cluster:db-mysql.nshelm.svc.cluster.localTo get your root password run: MYSQL_ROOT_PASSWORD=$(kubectl get secret --namespace nshelm db-mysql -o jsonpath="{.data.mysql-root-password}" | base64 --decode; echo)To connect to your database:1. Run an Ubuntu pod that you can use as a client: kubectl run -i --tty ubuntu --image=ubuntu:16.04 --restart=Never -- bash -il2. Install the mysql client: $ apt-get update && apt-get install mysql-client -y3. Connect using the mysql cli, then provide your password: $ mysql -h db-mysql -pTo connect to your database directly from outside the K8s cluster: MYSQL_HOST=127.0.0.1 MYSQL_PORT=3306 # Execute the following command to route the connection: kubectl port-forward svc/db-mysql 3306 mysql -h ${MYSQL_HOST} -P${MYSQL_PORT} -u root -p${MYSQL_ROOT_PASSWORD}[root@vms10 mysql]# 步骤7：查看现在已经部署的release及pod。
##########实操验证##########[root@vms10 mysql]# helm lsNAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSIONdb nshelm 1 2023-09-27 14:25:20.142173048 +0800 CST deployed mysql-1.6.8 5.7.30 [root@vms10 mysql]# [root@vms10 mysql]# kubectl get podsNAME READY STATUS RESTARTS AGEdb-mysql-6f6474fdf4-qxmrz 1/1 Running 0 44s[root@vms10 mysql]#
步骤8：安装mariadb客户端。
##########实操验证##########[root@vms10 mysql]# yum install mariadb -y Loaded plugins: fastestmirror, langpacksLoading mirror speeds from cached hostfileResolving Dependencies--> Running transaction check---> Package mariadb.x86_64 1:5.5.68-1.el7 will be installed--> Processing Dependency: mariadb-libs(x86-64) = 1:5.5.68-1.el7 for package: 1:mariadb-5.5.68-1.el7.x86_64--> Running transaction check---> Package mariadb-libs.x86_64 1:5.5.56-2.el7 will be updated---> Package mariadb-libs.x86_64 1:5.5.68-1.el7 will be an update--> Finished Dependency ResolutionDependencies Resolved========================================================================================================================================================================================================= Package Arch Version Repository Size=========================================================================================================================================================================================================Installing: mariadb x86_64 1:5.5.68-1.el7 base 8.8 MUpdating for dependencies: mariadb-libs x86_64 1:5.5.68-1.el7 base 760 kTransaction Summary=========================================================================================================================================================================================================Install 1 PackageUpgrade ( 1 Dependent package)Total size: 9.5 MTotal download size: 8.8 MDownloading packages:mariadb-5.5.68-1.el7.x86_64.rpm | 8.8 MB 00:00:04 Running transaction checkRunning transaction testTransaction test succeededRunning transaction Updating : 1:mariadb-libs-5.5.68-1.el7.x86_64 1/3 Installing : 1:mariadb-5.5.68-1.el7.x86_64 2/3 Cleanup : 1:mariadb-libs-5.5.56-2.el7.x86_64 3/3 Verifying : 1:mariadb-libs-5.5.68-1.el7.x86_64 1/3 Verifying : 1:mariadb-5.5.68-1.el7.x86_64 2/3 Verifying : 1:mariadb-libs-5.5.56-2.el7.x86_64 3/3 Installed: mariadb.x86_64 1:5.5.68-1.el7 Dependency Updated: mariadb-libs.x86_64 1:5.5.68-1.el7 Complete![root@vms10 mysql]#
步骤9：查看mysql pod的IP。
##########实操验证##########[root@vms10 mysql]# kubectl get pods -o wide --no-headers db-mysql-6f6474fdf4-qxmrz 1/1 Running 0 111s 10.244.81.107 vms11.rhce.cc <none> <none>[root@vms10 mysql]#
步骤10：用mysql命令连接到此pod上。
##########实操验证##########[root@vms10 mysql]# mysql -uroot -predhat -h10.244.81.107Welcome to the MariaDB monitor. Commands end with ; or \g.Your MySQL connection id is 26Server version: 5.7.18 MySQL Community Server (GPL)Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.MySQL [(none)]> quitBye[root@vms10 mysql]#
步骤11：删除此release。
##########实操验证##########[root@vms10 mysql]# helm delete db release "db" uninstalled[root@vms10 mysql]# helm ls NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION[root@vms10 mysql]# [root@vms10 mysql]# cd[root@vms10 ~]#
版权声明：
本站文章均来自互联网搜集，如有侵犯您的权益，请联系我们删除，谢谢。
标签： #ubuntualternateiso
