kubernetes(37):持续集成(6)-部署gitlab-runner实现GitlabCI-k8s+gitlab+harbor
Gitlab CI-k8s+gitlab+harbor
https://www.qikqiak.com/k8s-book/docs/65.Gitlab%20CI.html
1 简介
从 Gitlab 8.0 开始,Gitlab CI 就已经集成在 Gitlab 中,我们只要在项目中添加一个.gitlab-ci.yml
文件,然后添加一个Runner
,即可进行持续集成。在介绍 Gitlab CI 之前,我们先看看一些 Gitlab CI 的一些相关概念。
1.1 Pipeline
可以参考Jenkins-pipeline(2):开发阶段pipeline:gitlab和Jenkins-pipeline自动集成
一次 Pipeline 其实相当于一次构建任务,里面可以包含很多个流程,如安装依赖、运行测试、编译、部署测试服务器、部署生产服务器等流程。任何提交或者 Merge Request 的合并都可以触发 Pipeline 构建,如下图所示:
+------------------+ +----------------+ | | trigger | | | Commit / MR +---------->+ Pipeline | | | | | +------------------+ +----------------+
1.2 Stages
Stages 表示一个构建阶段,也就是上面提到的一个流程。我们可以在一次 Pipeline 中定义多个 Stages,这些 Stages 会有以下特点:
- 所有 Stages 会按照顺序运行,即当一个 Stage 完成后,下一个 Stage 才会开始
- 只有当所有 Stages 完成后,该构建任务 (Pipeline) 才会成功
- 如果任何一个 Stage 失败,那么后面的 Stages 不会执行,该构建任务 (Pipeline) 失败
Stages 和 Pipeline 的关系如下所示:
| | | Pipeline | | | | +-----------+ +------------+ +------------+ | | | Stage 1 |---->| Stage 2 |----->| Stage 3 | | | +-----------+ +------------+ +------------+ | | | +--------------------------------------------------------+
1.3 Jobs
Jobs 表示构建工作,表示某个 Stage 里面执行的工作。我们可以在 Stages 里面定义多个 Jobs,这些 Jobs 会有以下特点:
- 相同 Stage 中的 Jobs 会并行执行
- 相同 Stage 中的 Jobs 都执行成功时,该 Stage 才会成功
- 如果任何一个 Job 失败,那么该 Stage 失败,即该构建任务 (Pipeline) 失败
Jobs 和 Stage 的关系如下所示:
| | | Stage 1 | | | | +---------+ +---------+ +---------+ | | | Job 1 | | Job 2 | | Job 3 | | | +---------+ +---------+ +---------+ | | | +------------------------------------------+
2 Gitlab Runner
如果理解了上面的基本概念之后,可能我们就会发现一个问题,我们的构建任务在什么地方来执行呢,以前用 Jenkins 在 Master 和 Slave 节点都可以用来运行构建任务,而来执行我们的 Gitlab CI 构建任务的就是 Gitlab Runner。
我们知道大多数情况下构建任务都是会占用大量的系统资源的,如果直接让 Gitlab 本身来运行构建任务的话,显然 Gitlab 的性能会大幅度下降的。GitLab CI 最大的作用是管理各个项目的构建状态,因此,运行构建任务这种浪费资源的事情交给一个独立的 Gitlab Runner 来做就会好很多,更重要的是 Gitlab Runner 可以安装到不同的机器上,甚至是我们本机,这样完全就不会影响到 Gitlab 本身了。
安装
安装 Gitlab Runner 非常简单,我们可以完全安装官方文档:https://docs.gitlab.com/runner/install/即可,比如可以直接使用二进制、Docker 等来安装。同样的,我们这里还是将 Gitlab Runner 安装到 Kubernetes 集群中来,让我们的集群来统一管理 Gitlab 相关的服务。
2.1 验证 Kubernetes 集群
执行下面的命令验证 Kubernetes 集群:
# kubectl cluster-info Kubernetes master is running at https://10.6.76.25:6443 Alertmanager is running at https://10.6.76.25:6443/api/v1/namespaces/kube-system/services/alertmanager:http/proxy KubeDNS is running at https://10.6.76.25:6443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy kube-state-metrics is running at https://10.6.76.25:6443/api/v1/namespaces/kube-system/services/kube-state-metrics:http-metrics/proxy NodeExporter is running at https://10.6.76.25:6443/api/v1/namespaces/kube-system/services/node-exporter:metrics/proxy Prometheus is running at https://10.6.76.25:6443/api/v1/namespaces/kube-system/services/prometheus:http/proxy To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'. #cluster-info这个命令会显示当前链接的集群状态和可用的集群服务列表。
2.2 获取 Gitlab CI Register Token
kubernetes(36):持续集成(5)-k8s集群中搭建gitlab
前面我们已经成功安装了 Gitlab,在浏览器中打开gitlab.xxx.com
页面,然后登录后进入到管理页面http://gitlab.xxx.com/admin
,然后点击导航栏中的Runner
,可以看到该页面中有两个总要的参数,一个是 URL,另外一个就是 Register Token,下面的步骤中需要用到这两个参数值。
注意:不要随便泄露 Token
2.3 编写 Gitlab CI Runner 资源清单文件
runner-cm.yaml
同样将 Runner 相关的资源对象都安装到kube-ops
这个 namespace 下面,首先,我们通过 ConfigMap 资源来传递 Runner 镜像所需的环境变量(runner-cm.yaml):
apiVersion: v1 data: REGISTER_NON_INTERACTIVE: "true" REGISTER_LOCKED: "false" METRICS_SERVER: "0.0.0.0:9100" CI_SERVER_URL: "http://gitlab.kube-ops.svc.cluster.local/ci" RUNNER_REQUEST_CONCURRENCY: "4" RUNNER_EXECUTOR: "kubernetes" KUBERNETES_NAMESPACE: "kube-ops" KUBERNETES_PRIVILEGED: "true" KUBERNETES_CPU_LIMIT: "1" KUBERNETES_CPU_REQUEST: "500m" KUBERNETES_MEMORY_LIMIT: "1Gi" KUBERNETES_SERVICE_CPU_LIMIT: "1" KUBERNETES_SERVICE_MEMORY_LIMIT: "1Gi" KUBERNETES_HELPER_CPU_LIMIT: "500m" KUBERNETES_HELPER_MEMORY_LIMIT: "100Mi" KUBERNETES_PULL_POLICY: "if-not-present" KUBERNETES_TERMINATIONGRACEPERIODSECONDS: "10" KUBERNETES_POLL_INTERVAL: "5" KUBERNETES_POLL_TIMEOUT: "360" kind: ConfigMap metadata: labels: app: gitlab-ci-runner name: gitlab-ci-runner-cm namespace: kube-ops
要注意CI_SERVER_URL
对应的值需要指向我们的 Gitlab 实例的 URL(可以是外网地址,也可以是 Kubernetes 集群内部的 Service DNS 地址,因为 Runner 也是运行在 Kubernetes 集群中的),并加上/ci
( http://gitlab.kube-ops.svc.cluster.local/ci )。此外还添加了一些构建容器运行的资源限制,可以自己根据需要进行更改即可。
注意:在向 ConfigMap 添加新选项后,需要删除 GitLab CI Runner Pod。因为我们是使用 envFrom
来注入上面的这些环境变量而不是直接使用env
的(envFrom 通过将环境变量放置到ConfigMaps
或Secrets
来帮助减小清单文件。
另外如果要添加其他选项的话,我们可以在 Pod 中运行gitlab-ci-multi-runner register --help
命令来查看所有可使用的选项,只需为要配置的标志添加 env 变量即可,如下所示:
gitlab-runner@gitlab-ci-runner-0:/$ gitlab-ci-multi-runner register --help [...] --kubernetes-cpu-limit value The CPU allocation given to build containers (default: "1") [$KUBERNETES_CPU_LIMIT] --kubernetes-memory-limit value The amount of memory allocated to build containers (default: "4Gi") [$KUBERNETES_MEMORY_LIMIT] --kubernetes-service-cpu-limit value The CPU allocation given to build service containers (default: "1") [$KUBERNETES_SERVICE_CPU_LIMIT] --kubernetes-service-memory-limit value The amount of memory allocated to build service containers (default: "1Gi") [$KUBERNETES_SERVICE_MEMORY_LIMIT] --kubernetes-helper-cpu-limit value The CPU allocation given to build helper containers (default: "500m") [$KUBERNETES_HELPER_CPU_LIMIT] --kubernetes-helper-memory-limit value The amount of memory allocated to build helper containers (default: "3Gi") [$KUBERNETES_HELPER_MEMORY_LIMIT] --kubernetes-cpu-request value The CPU allocation requested for build containers [$KUBERNETES_CPU_REQUEST] ... --pre-clone-script value Runner-specific command script executed before code is pulled [$RUNNER_PRE_CLONE_SCRIPT] [...]
如果定义的 Gitlab 域名并不是通过外网的 DNS 进行解析的,而是通过 /etc/hosts 俩进行映射的,那么我们就需要在 runner 的 Pod 中去添加 git.qikqiak.com 对应的 hosts 了,那么如何添加呢?我们可以想到的是 Pod 的 hostAlias 可以实现这个需求,但是 runner 的 Pod 是自动生成的,没办法直接去定义 hostAlias。这里我们就可以通过上面的--pre-clone-script
参数来指定一段脚本来添加 hosts 信息,也就是在上面的 ConfigMap 中添加环境变量RUNNER_PRE_CLONE_SCRIPT
的值即可:
RUNNER_PRE_CLONE_SCRIPT = "echo 'xx.xx.xxx.xx git.qikqiak.com' >> /etc/hosts" #这个后面就用到了
runner-scripts-cm.yaml
除了上面的一些环境变量相关的配置外,还需要一个用于注册、运行和取消注册 Gitlab CI Runner 的小脚本。只有当 Pod 正常通过 Kubernetes(TERM信号)终止时,才会触发转轮取消注册。 如果强制终止 Pod(SIGKILL信号),Runner 将不会注销自身。必须手动完成对这种被杀死的 Runner 的清理,配置清单文件如下:(runner-scripts-cm.yaml)
apiVersion: v1 data: run.sh: | #!/bin/bash unregister() { kill %1 echo "Unregistering runner ${RUNNER_NAME} ..." /usr/bin/gitlab-ci-multi-runner unregister -t "$(/usr/bin/gitlab-ci-multi-runner list 2>&1 | tail -n1 | awk '{print $4}' | cut -d'=' -f2)" -n ${RUNNER_NAME} exit $? } trap 'unregister' EXIT HUP INT QUIT PIPE TERM echo "Registering runner ${RUNNER_NAME} ..." /usr/bin/gitlab-ci-multi-runner register -r ${GITLAB_CI_TOKEN} sed -i 's/^concurrent.*/concurrent = '"${RUNNER_REQUEST_CONCURRENCY}"'/' /home/gitlab-runner/.gitlab-runner/config.toml echo "Starting runner ${RUNNER_NAME} ..." /usr/bin/gitlab-ci-multi-runner run -n ${RUNNER_NAME} & wait kind: ConfigMap metadata: labels: app: gitlab-ci-runner name: gitlab-ci-runner-scripts namespace: kube-ops
可以看到需要一个 GITLAB_CI_TOKEN,然后我们用 Gitlab CI runner token 来创建一个 Kubernetes secret 对象。将 token 进行 base64 编码:
# echo "vjrZr36yypzdXnBSj6sy" | base64 -w0 dmpyWnIzNnl5cHpkWG5CU2o2c3kK
gitlab-ci-token-secret.yaml
然后使用上面的 token 创建一个 Secret 对象:(gitlab-ci-token-secret.yaml)
apiVersion: v1 kind: Secret metadata: name: gitlab-ci-token namespace: kube-ops labels: app: gitlab-ci-runner data: GITLAB_CI_TOKEN: dmpyWnIzNnl5cHpkWG5CU2o2c3kK
# kubectl apply -f gitlab-ci-token-secret.yaml
secret/gitlab-ci-token created
runner-statefulset.yaml
然后接下来就可以来编写一个用于真正运行 Runner 的控制器对象,我们这里使用 Statefulset。首先,在开始运行的时候,尝试取消注册所有的同名 Runner,当节点丢失时(即NodeLost
事件),这尤其有用。然后再尝试重新注册自己并开始运行。在正常停止 Pod 的时候,Runner 将会运行unregister
命令来尝试取消自己,所以 Gitlab 就不能再使用这个 Runner 了,这个是通过 Kubernetes Pod 生命周期中的hooks
来完成的。
另外通过使用envFrom
来指定Secrets
和ConfigMaps
来用作环境变量,对应的资源清单文件如下:
(runner-statefulset.yaml)
apiVersion: apps/v1beta1 kind: StatefulSet metadata: name: gitlab-ci-runner namespace: kube-ops labels: app: gitlab-ci-runner spec: updateStrategy: type: RollingUpdate replicas: 2 serviceName: gitlab-ci-runner template: metadata: labels: app: gitlab-ci-runner spec: volumes: - name: gitlab-ci-runner-scripts projected: sources: - configMap: name: gitlab-ci-runner-scripts items: - key: run.sh path: run.sh mode: 0755 serviceAccountName: gitlab-ci securityContext: runAsNonRoot: true runAsUser: 999 supplementalGroups: [999] containers: - image: gitlab/gitlab-runner:latest name: gitlab-ci-runner command: - /scripts/run.sh envFrom: - configMapRef: name: gitlab-ci-runner-cm - secretRef: name: gitlab-ci-token env: - name: RUNNER_NAME valueFrom: fieldRef: fieldPath: metadata.name ports: - containerPort: 9100 name: http-metrics protocol: TCP volumeMounts: - name: gitlab-ci-runner-scripts mountPath: "/scripts" readOnly: true restartPolicy: Always
runner-rbac.yaml
可以看到上面我们使用了一个名为 gitlab-ci 的 serviceAccount,新建一个 rbac 资源清单文件:(runner-rbac.yaml)
apiVersion: v1 kind: ServiceAccount metadata: name: gitlab-ci namespace: kube-ops --- kind: Role apiVersion: rbac.authorization.k8s.io/v1 metadata: name: gitlab-ci namespace: kube-ops rules: - apiGroups: [""] resources: ["*"] verbs: ["*"] --- kind: RoleBinding apiVersion: rbac.authorization.k8s.io/v1 metadata: name: gitlab-ci namespace: kube-ops subjects: - kind: ServiceAccount name: gitlab-ci namespace: kube-ops roleRef: kind: Role name: gitlab-ci apiGroup: rbac.authorization.k8s.io
2.4 创建 Runner 资源对象
# ls gitlab-ci-token-secret.yaml runner-* gitlab-ci-token-secret.yaml runner-cm.yaml runner-rbac.yaml runner-statefulset.yaml runner-scripts-cm.yaml kubectl apply -f runner-cm.yaml kubectl apply -f runner-scripts-cm.yaml kubectl apply -f gitlab-ci-token-secret.yaml kubectl apply -f runner-rbac.yaml kubectl apply -f runner-statefulset.yaml
创建完成后,可以通过查看 Pod 状态判断 Runner 是否运行成功:
# kubectl -n kube-ops get pod| grep gitlab-ci gitlab-ci-runner-0 1/1 Running 0 4m35s gitlab-ci-runner-1 1/1 Running 0 116s
以看到已经成功运行了两个(具体取决于StatefulSet
清单中的副本数) Runner 实例,然后切换到 Gitlab Admin 页面下面的 Runner 页面:
当然我们也可以根据需要更改 Runner 的一些配置,比如添加 tag 标签等。
3 Gitlab CI
准备测试代码
下载代码上传到gitlab
测试项目cnych/presentation-gitlab-k8s 我fork了一下
接下来使用 Gitlab CI 所用到的代码库可以从 Github 上获得:https://github.com/wangxu01/gitlab-ci-k8s-demo ,可以在 Gitlab 上新建一个项目导入该仓库,当然也可以新建一个空白的仓库,然后将 Github 上面的项目 Clone 到本地后,更改远程仓库地址即可:
[root@k8s-master test]# git clone https://github.com/wangxu01/gitlab-ci-k8s-demo.git 正克隆到 'gitlab-ci-k8s-demo'... remote: Enumerating objects: 2036, done. remote: Total 2036 (delta 0), reused 0 (delta 0), pack-reused 2036 接收对象中: 100% (2036/2036), 3.29 MiB | 767.00 KiB/s, done. 处理 delta 中: 100% (787/787), done. [root@k8s-master test]# cd gitlab-ci-k8s-demo/ [root@k8s-master gitlab-ci-k8s-demo]# ls Dockerfile Gopkg.lock Gopkg.toml LICENSE main.go Makefile manifests README.md vendor VERSION [root@k8s-master gitlab-ci-k8s-demo]# git remote set-url origin ssh://git@gitlab.wangxu.com:30022/root/presentation-gitlab-k8s.git [root@k8s-master gitlab-ci-k8s-demo]# git push -u origin master Counting objects: 2036, done. Delta compression using up to 4 threads. Compressing objects: 100% (1133/1133), done. Writing objects: 100% (2036/2036), 3.29 MiB | 0 bytes/s, done. Total 2036 (delta 787), reused 2036 (delta 787) remote: Resolving deltas: 100% (787/787), done. remote: remote: The private project root/presentation-gitlab-k8s was successfully created. remote: remote: To configure the remote, run: remote: git remote add origin git@gitlab.wangxu.com:root/presentation-gitlab-k8s.git remote: remote: To view the project, visit: remote: http://gitlab.wangxu.com/root/presentation-gitlab-k8s remote: To ssh://git@gitlab.wangxu.com:30022/root/presentation-gitlab-k8s.git * [new branch] master -> master 分支 master 设置为跟踪来自 origin 的远程分支 master。 [root@k8s-master gitlab-ci-k8s-demo]#
自动触发部署
当我们把仓库推送到 Gitlab 以后,应该可以看到 Gitlab CI 开始执行构建任务了:
此时 Runner Pod 所在的 namespace 下面也会出现两个新的 Pod:
# kubectl get pods -n kube-ops …… runner-aczwwb3k-project-2-concurrent-0chkmk 0/2 ContainerCreating 0 2m14s runner-aczwwb3k-project-2-concurrent-1nbfbv 0/2 ContainerCreating 0 2m13s
错误1-gitlab域名
这两个新的 Pod 就是用来执行具体的 Job 任务的,这里同时出现两个证明第一步是并行执行的两个任务,从上面的 Pipeline 中也可以看到是 test 和 test2 这两个 Job。我们可以看到在执行 image_build 任务的时候出现了错误:
可以点击查看这个 Job 失败详细信息:
Running with gitlab-runner 12.4.0 (1564076b) on gitlab-ci-runner-1 DQisyaVT Using Kubernetes namespace: kube-ops Using Kubernetes executor with image golang:1.10.3-stretch ... Waiting for pod kube-ops/runner-dqisyavt-project-2-concurrent-07lr98 to be running, status is Pending Running on runner-dqisyavt-project-2-concurrent-07lr98 via gitlab-ci-runner-1... Fetching changes with git depth set to 50... Initialized empty Git repository in /builds/root/presentation-gitlab-k8s/.git/ Created fresh repository. fatal: unable to access 'http://gitlab-ci-token:[MASKED]@gitlab.wangxu.com/root/presentation-gitlab-k8s.git/': Could not resolve host: gitlab.wangxu.com ERROR: Job failed: command terminated with exit code 1
这是因为我的gitlab域名没有在 run pod进行解析
# cat runner-cm.yaml apiVersion: v1 data: REGISTER_NON_INTERACTIVE: "true" REGISTER_LOCKED: "false" METRICS_SERVER: "0.0.0.0:9100" CI_SERVER_URL: "http://gitlab.kube-ops.svc.cluster.local/ci" RUNNER_REQUEST_CONCURRENCY: "4" RUNNER_EXECUTOR: "kubernetes" KUBERNETES_NAMESPACE: "kube-ops" KUBERNETES_PRIVILEGED: "true" KUBERNETES_CPU_LIMIT: "1" KUBERNETES_CPU_REQUEST: "500m" KUBERNETES_MEMORY_LIMIT: "1Gi" KUBERNETES_SERVICE_CPU_LIMIT: "1" KUBERNETES_SERVICE_MEMORY_LIMIT: "1Gi" KUBERNETES_HELPER_CPU_LIMIT: "500m" KUBERNETES_HELPER_MEMORY_LIMIT: "100Mi" KUBERNETES_PULL_POLICY: "if-not-present" KUBERNETES_TERMINATIONGRACEPERIODSECONDS: "10" KUBERNETES_POLL_INTERVAL: "5" KUBERNETES_POLL_TIMEOUT: "360" RUNNER_PRE_CLONE_SCRIPT : "echo '10.6.76.23 gitlab.wangxu.com' >> /etc/hosts" RUNNER_PRE_CLONE_SCRIPT : "echo '10.6.76.24 gitlab.wangxu.com' >> /etc/hosts" kind: ConfigMap metadata: labels: app: gitlab-ci-runner name: gitlab-ci-runner-cm namespace: kube-ops
#重启runner kubectl apply -f runner-cm.yaml kubectl delete -f runner-statefulset.yaml kubectl apply -f runner-statefulset.yaml
错误2-代码配置文件
下载代码通过了,但在执行 image_build 任务的时候出现了错误:
WARNING! Using --password via the CLI is insecure. Use --password-stdin. Error response from daemon: Get http://registry.qikqiak.com/v1/users/: dial tcp: lookup registry.qikqiak.com on 10.96.0.10:53: no such host
这里调用的还是原git的地址
我们把原项目的registry.qikqiak.com 改成自己的gitlab.wangxu.com 再提交一下
[root@k8s-master gitlab-ci-k8s-demo]# grep -r registry.qikqiak.com * manifests/deployment.yaml: image: registry.qikqiak.com/gitdemo/gitlab-k8s:__VERSION__ [root@k8s-master gitlab-ci-k8s-demo]# vim manifests/deployment.yaml [root@k8s-master gitlab-ci-k8s-demo]# grep -r image: * manifests/deployment.yaml: image: harbor.wangxu.com/gitdemo/gitlab-k8s:__VERSION__ vendor/golang.org/x/crypto/openpgp/packet/userattribute_test.go: t.Errorf("Error decoding JPEG image:%v", err) [root@k8s-master gitlab-ci-k8s-demo]# git add . [root@k8s-master gitlab-ci-k8s-demo]# git commit -m 'change image' [master 532d6d0] change image 1 file changed, 1 insertion(+), 1 deletion(-) (reverse-i-search)`': ^C [root@k8s-master gitlab-ci-k8s-demo]# git push origin master Counting objects: 7, done. Delta compression using up to 4 threads. Compressing objects: 100% (4/4), done. Writing objects: 100% (4/4), 357 bytes | 0 bytes/s, done. Total 4 (delta 3), reused 0 (delta 0) To ssh://git@gitlab.wangxu.com:30022/root/presentation-gitlab-k8s.git 3fec16d..532d6d0 master -> master [root@k8s-master gitlab-ci-k8s-demo]#
我们也没有在 Gitlab 中开启 Container Registry,所以环境变量中并没有这些值,我们这里使用 Harbor 来作为我们的镜像仓库,这里我们只需要把 Harbor 相关的配置以参数的形式配置到环境中就可以了。
定位到项目 -> 设置 -> CI/CD,展开Environment variables
栏目,配置镜像仓库相关的参数值:
配置上后,我们在上面失败的 Job 任务上点击“重试”,在重试过后依然可以看到会出现下面的错误信息:
$ docker login -u "${CI_REGISTRY_USER}" -p "${CI_REGISTRY_PASSWORD}" registry.qikqiak.com WARNING! Using --password via the CLI is insecure. Use --password-stdin. Error response from daemon: Get http://registry.qikqiak.com/v1/users/: dial tcp: lookup registry.qikqiak.com on 10.96.0.10:53: no such host ERROR: Job failed: command terminated with exit code 1
原地址还是没有改过来,这个其实是配置在.gitlab-ci.yml
文件
[root@k8s-master gitlab-ci-k8s-demo]# sed -i 's/git.qikqiak.com/gitlab.wangxu.com/g' .gitlab-ci.yml [root@k8s-master gitlab-ci-k8s-demo]# sed -i 's/registry.qikqiak.com/harbor.wangxu.com/g' .gitlab-ci.yml [root@k8s-master gitlab-ci-k8s-demo]# git add . [root@k8s-master gitlab-ci-k8s-demo]# git commit -m 'change 5' [master dce9e4c] change 5 1 file changed, 5 insertions(+), 5 deletions(-) [root@k8s-master gitlab-ci-k8s-demo]# git push origin master Counting objects: 5, done. Delta compression using up to 4 threads. Compressing objects: 100% (3/3), done. Writing objects: 100% (3/3), 319 bytes | 0 bytes/s, done. Total 3 (delta 2), reused 0 (delta 0) To ssh://git@gitlab.wangxu.com:30022/root/presentation-gitlab-k8s.git acbed8f..dce9e4c master -> master [root@k8s-master gitlab-ci-k8s-demo]#
错误3-harbor域名
$ docker login -u "${CI_REGISTRY_USER}" -p "${CI_REGISTRY_PASSWORD}" harbor.wangxu.com WARNING! Using --password via the CLI is insecure. Use --password-stdin. Error response from daemon: Get http://harbor.wangxu.com/v1/users/: dial tcp: lookup harbor.wangxu.com on 10.96.0.10:53: no such host
还是域名的问题
#vim runner-cm.yaml ... RUNNER_PRE_CLONE_SCRIPT : "echo '10.6.76.23 gitlab.wangxu.com harbor.wangxu.com' >> /etc/hosts" RUNNER_PRE_CLONE_SCRIPT : "echo '10.6.76.24 gitlab.wangxu.com harbor.wangxu.com' >> /etc/hosts" ...
kubectl apply -f runner-cm.yaml kubectl delete -f runner-statefulset.yaml kubectl apply -f runner-statefulset.yaml
错误4-配置环境变量
然后又失败了
$ docker login -u "${CI_REGISTRY_USER}" -p "${CI_REGISTRY_PASSWORD}" harbor.wangxu.com WARNING! Using --password via the CLI is insecure. Use --password-stdin. Error response from daemon: Get https://harbor.wangxu.com/v2/: unauthorized: authentication required ERROR: Job failed: command terminated with exit code 1
Harbor密码写错了 选中受保护
编译完成
终于过去了
Running with gitlab-runner 12.4.0 (1564076b) on gitlab-ci-runner-0 ztHmfWd9 Using Kubernetes namespace: kube-ops Using Kubernetes executor with image docker:latest ... Waiting for pod kube-ops/runner-zthmfwd9-project-3-concurrent-06mlgk to be running, status is Pending Running on runner-zthmfwd9-project-3-concurrent-06mlgk via gitlab-ci-runner-0... $ echo '10.6.76.24 gitlab.wangxu.com harbor.wangxu.com' >> /etc/hosts Fetching changes with git depth set to 50... Initialized empty Git repository in /builds/root/presentation-gitlab-k8s/.git/ Created fresh repository. From http://gitlab.wangxu.com/root/presentation-gitlab-k8s * [new branch] master -> origin/master Checking out d4bfe70b as master... Skipping Git submodules setup Downloading artifacts for compile (126)... Downloading artifacts from coordinator... ok id=126 responseStatus=200 OK token=4yKS-1uT $ mkdir -p "/go/src/gitlab.wangxu.com/${CI_PROJECT_NAMESPACE}" $ ln -sf "${CI_PROJECT_DIR}" "/go/src/gitlab.wangxu.com/${CI_PROJECT_PATH}" $ cd "/go/src/gitlab.wangxu.com/${CI_PROJECT_PATH}/" $ docker info Client: Debug Mode: false Server: Containers: 0 Running: 0 Paused: 0 Stopped: 0 Images: 0 Server Version: 17.03.2-ce Storage Driver: overlay Backing Filesystem: xfs Supports d_type: false Logging Driver: json-file Cgroup Driver: cgroupfs Plugins: Volume: local Network: bridge host macvlan null overlay Log: Swarm: inactive Runtimes: runc Default Runtime: runc Init Binary: docker-init containerd version: 4ab9917febca54791c5f071a9d1f404867857fcc runc version: 54296cf40ad8143b62dbcaa1d90e520a2136ddfe init version: 949e6fa Security Options: seccomp Profile: default Kernel Version: 5.2.10-1.el7.elrepo.x86_64 Operating System: Alpine Linux v3.5 (containerized) OSType: linux Architecture: x86_64 CPUs: 4 Total Memory: 7.783GiB Name: runner-zthmfwd9-project-3-concurrent-06mlgk ID: S4QT:6C5I:BKXI:3HX3:FTRQ:ZGO2:2AUP:X5G5:YR2I:MHUV:XMYE:XTWU Docker Root Dir: /var/lib/docker Debug Mode: false Registry: https://index.docker.io/v1/ Experimental: false Insecure Registries: harbor.wangxu.com 127.0.0.0/8 Live Restore Enabled: false WARNING: overlay: the backing xfs filesystem is formatted without d_type support, which leads to incorrect behavior. Reformat the filesystem with ftype=1 to enable d_type support. Running without d_type support will not be supported in future releases. WARNING: bridge-nf-call-iptables is disabled WARNING: bridge-nf-call-ip6tables is disabled $ docker login -u "${CI_REGISTRY_USER}" -p "${CI_REGISTRY_PASSWORD}" "${CI_REGISTRY}" WARNING! Using --password via the CLI is insecure. Use --password-stdin. WARNING! Your password will be stored unencrypted in /root/.docker/config.json. Configure a credential helper to remove this warning. See https://docs.docker.com/engine/reference/commandline/login/#credentials-store Login Succeeded $ docker build -t "${CI_REGISTRY_IMAGE}:latest" . Sending build context to Docker daemon 28.63MB Step 1/4 : FROM busybox:1.28.4-glibc 1.28.4-glibc: Pulling from library/busybox 5497949500d2: Pulling fs layer 5497949500d2: Verifying Checksum 5497949500d2: Download complete 5497949500d2: Pull complete Digest: sha256:bda689514be526d9557ad442312e5d541757c453c50b8cf2ae68597c291385a1 Status: Downloaded newer image for busybox:1.28.4-glibc ---> 56cc512116c8 Step 2/4 : COPY app /bin/app ---> b97b889363e3 Removing intermediate container 197636a53e2a Step 3/4 : RUN chmod +x /bin/app ---> Running in 0a69653107b2 ---> d1ee3ebf5944 Removing intermediate container 0a69653107b2 Step 4/4 : CMD /bin/app ---> Running in 74ff2064d7c8 ---> a3f04c58f4bd Removing intermediate container 74ff2064d7c8 Successfully built a3f04c58f4bd $ docker tag "${CI_REGISTRY_IMAGE}:latest" "${CI_REGISTRY}/library/${CI_REGISTRY_IMAGE}:${CI_COMMIT_REF_NAME}" $ test ! -z "${CI_COMMIT_TAG}" && docker push "${CI_REGISTRY_IMAGE}:latest" $ docker push "${CI_REGISTRY}/library/${CI_REGISTRY_IMAGE}:${CI_COMMIT_REF_NAME}" The push refers to a repository [harbor.wangxu.com/library/gitlab-ci-k8s-demo] b3ca74fc4d32: Preparing e49dd1e534d9: Preparing e49dd1e534d9: Pushed b3ca74fc4d32: Pushed master: digest: sha256:37e5a5d0935f69926e9fa66bc7b7488272c07cdbd7d26666f38e4ef24bd209dc size: 739 Job succeeded
可以看到镜像传到harbor上了
配置关联的k8s集群
然后我们又失败了
在最后的阶段deploy_review
可以看到失败了,这是因为在最后的部署阶段我们使用kubectl
工具操作集群的时候并没有关联上任何集群。
我们在 Gitlab CI 中部署阶段使用到的镜像是cnych/kubectl
,该镜像的Dockerfile
文件可以在仓库https://github.com/cnych/docker-kubectl中获取
:
我们也fork一下 https://github.com/wangxu01/docker-kubectl
cnych/kubectl
我们下载
再上传一个
到
dockerHub wangxu01/kubelet
谢谢作者
#kubelet Dockerfile FROM alpine:3.8 MAINTAINER cnych <icnych@gmail.com> ENV KUBE_LATEST_VERSION="v1.13.4" RUN apk add --update ca-certificates \ && apk add --update -t deps curl \ && apk add --update gettext \ && apk add --update git \ && curl -L https://storage.googleapis.com/kubernetes-release/release/${KUBE_LATEST_VERSION}/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \ && chmod +x /usr/local/bin/kubectl \ && apk del --purge deps \ && rm /var/cache/apk/* ENTRYPOINT ["kubectl"] CMD ["--help"]
我们知道kubectl
在使用的时候默认会读取当前用户目录下面的~/.kube/config
文件来链接集群,当然我们可以把连接集群的信息直接内置到上面的这个镜像中去,这样就可以直接操作集群了,但是也有一个不好的地方就是不方便操作,假如要切换一个集群还得重新制作一个镜像。所以一般我们这里直接在 Gitlab 上配置集成 Kubernetes 集群。
在项目页面点击Add Kubernetes Cluster
-> Add existing cluster
:
1.Kubernetes cluster name 可以随便填
2.API URL 是你的集群的apiserver
的地址, 一般可以通过输入kubectl cluster-info
获取,Kubernetes master 地址就是需要的
# kubectl cluster-info | grep 'Kubernetes master' | awk '/http/ {print $NF}' https://10.6.76.25:6443
3.CA证书、Token、项目命名空间
对于我们这个项目准备部署在一个名为gitlab
的 namespace 下面,所以首先我们需要到目标集群中创建一个 namespace:
kubectl create ns gitlab
由于我们在部署阶段需要去创建、删除一些资源对象,所以我们也需要对象的 RBAC 权限,这里为了简单,我们直接新建一个 ServiceAccount,绑定上一个cluster-admin
的权限:(gitlab-sa.yaml)
--- apiVersion: v1 kind: ServiceAccount metadata: name: gitlab namespace: gitlab --- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: ClusterRoleBinding metadata: name: gitlab namespace: gitlab subjects: - kind: ServiceAccount name: gitlab namespace: gitlab roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: cluster-admin
然后创建上面的 ServiceAccount 对象:
$ kubectl apply -f sa.yaml serviceaccount "gitlab" created clusterrolebinding.rbac.authorization.k8s.io "gitlab" created
可以通过上面创建的 ServiceAccount 获取 CA 证书和 Token:
$ kubectl get serviceaccount gitlab -n gitlab -o json | jq -r '.secrets[0].name'
gitlab-token-f9zp7
然后根据上面的Secret找到CA证书
$ kubectl get secret gitlab-token-f9zp7 -n gitlab -o json | jq -r '.data["ca.crt"]' | base64 -d xxxxxCA证书内容xxxxx
当然要找到对应的 Token 也很简单
$ kubectl get secret gitlab-token-f9zp7 -n gitlab -o json | jq -r '.data.token' | base64 -d xxxxxxtoken值xxxx
[root@k8s-master gitlab]# kubectl get serviceaccount gitlab -n gitlab -o json | jq -r '.secrets[0].name' gitlab-token-lx7kn [root@k8s-master gitlab]# kubectl get secret gitlab-token-lx7kn -n gitlab -o json | jq -r '.data["ca.crt"]' | base64 -d -----BEGIN CERTIFICATE----- MIICyDCCAbCgAwIBAgIBADANBgkqhkiG9w0BAQsFADAVMRMwEQYDVQQDEwprdWJl cm5ldGVzMB4XDTE5MDgyOTAxMjAzMVoXDTI5MDgyNjAxMjAzMVowFTETMBEGA1UE AxMKa3ViZXJuZXRlczCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAOff fS97EVsrYu0WEJIjCYJ02rhrkGZEqXGF7M1O4jW+xqew+raT1DU+I3U+8KmntGgP S88IWOeAsvu60d0i9I8W2X3wxwa+a0BrDOx+iUEawTl4X7lllJyN14CkLEc0L2WG xybbvGfVYZXOuOL/v5xuo9O58VTmEXzXoMD9pk8jb4Qe0NzJKSmWdu5Mj4J0czSo 0tcq3F0kGDvYMbNZhYGbxxoImuPZU6ynp+RBAMMZX5PL2KWhTi5Yw5sf/siq/hN4 fi9O14eoGbIU460PC9yWYTNd6C3UGF2+MCiIg9uuTgZP/Uxhg3rYrnT+vys5D6z6 7QrFrLXh8U91wCUVPf0CAwEAAaMjMCEwDgYDVR0PAQH/BAQDAgKkMA8GA1UdEwEB /wQFMAMBAf8wDQYJKoZIhvcNAQELBQADggEBAMTe4kAdIm0ZoZVqheDUGhjM1EPb y0+837wtcdsOYjA7KjgioUuP+AvOkQkyXTPI9SDASmg062hMDPKeZ7KLt1mCLfvc iQLcHpcYKnEoEOOAij1q3KKal454pOg6Bt21632ufO5ELqCfJJKKzbP53u02QDmv Xlxe2paJqxAZL5wP7zkLzMiHc+YU4W1x0ppx1wlhMJfH2jxLra2T2EsSePvcLjOO EsjyeDdpF7MqxS2R34Q38fe7/AeyJxyLOhrkRa5RMS8XWd/5CDxAkDB/ooNEUmUq hqmrvEKPY9Z+BeulnHhpUOUHMNSSfrxjuAt2sbbv0UzK+7hePlBor+61kyc= -----END CERTIFICATE----- [root@k8s-master gitlab]# kubectl get secret gitlab-token-lx7kn -n gitlab -o json | jq -r '.data.token' | base64 -d eyJhbGciOiJSUzI1NiIsImtpZCI6IiJ9.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJnaXRsYWIiLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlY3JldC5uYW1lIjoiZ2l0bGFiLXRva2VuLWx4N2tuIiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZXJ2aWNlLWFjY291bnQubmFtZSI6ImdpdGxhYiIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VydmljZS1hY2NvdW50LnVpZCI6IjFhYWRjNzljLTQ2MGYtNDMwNy05MmI1LTNkOTgwMmIyOTExZiIsInN1YiI6InN5c3RlbTpzZXJ2aWNlYWNjb3VudDpnaXRsYWI6Z2l0bGFiIn0.04Kfa1xY0_g4xUE_CqMNvtAzJGlO7CICv1iicP7WzMiTEjKa6c031duYBP85-jeRdrHxnEX2VaUrqJIS5eT-GJajBMrUD6D55qa_N5OBrUdTwxe-NJZigYKL3xE1fpZKKoJg5ggGd239BJduUvp10Xo_V0hhwhgsGmHDzMyhtZEzWmty3DjiNFBNedxQwV2fNoOy0Z8UYq-A38hGpQl_zPt_TVdsMSgw2X8KIvgWetsOspfAl6DL0URUmjBSXhKqEl1g4YNGin-cZGyDWeUbjg3LpoXQzediyN5tmI2pwmW-tgRZqnK7vLZQQ1zQ7fmD27l8orMNmMhQmt6zVdLJng
is blocked: Requests to the local network are not allowed
https://blog.csdn.net/weixin_37417954/article/details/83106881
接着就保存成功了
.gitlab-ci.yml
现在 Gitlab CI 的环境都准备好了,我们可以来看下用于描述 Gitlab CI 的.gitlab-ci.yml
文件。
一个 Job 在.gitlab-ci.yml
文件中一般如下定义:
# 运行golang测试用例
test:
stage: test
script:
- go test ./...
上面这个 Job 会在 test 这个 Stage 阶段运行。
为了指定运行的 Stage 阶段,可以在.gitlab-ci.yml
文件中放置任意一个简单的列表:
# 所有 Stage stages: - test - build - release - deploy
你可以指定用于在全局或者每个作业上执行命令的镜像:
# 对于未指定镜像的作业,会使用下面的镜像 image: golang:1.10.3-stretch # 或者对于特定的job使用指定的镜像 test: stage: test image: python:3 script: - echo Something in the test step in a python:3 image
对于.gitlab-ci.yml
文件的的其他部分,请查看如下文档介绍:https://docs.gitlab.com/ce/ci/yaml/README.html。
在我们当前的项目中定义了 4 个构建阶段:test、build、release、review、deploy,完整的.gitlab-ci.yml
文件如下:
image: name: golang:1.10.3-stretch entrypoint: ["/bin/sh", "-c"] # The problem is that to be able to use go get, one needs to put # the repository in the $GOPATH. So for example if your gitlab domain # is mydomainperso.com, and that your repository is repos/projectname, and # the default GOPATH being /go, then you'd need to have your # repository in /go/src/mydomainperso.com/repos/projectname # Thus, making a symbolic link corrects this. before_script: - mkdir -p "/go/src/gitlab.wangxu.com/${CI_PROJECT_NAMESPACE}" - ln -sf "${CI_PROJECT_DIR}" "/go/src/gitlab.wangxu.com/${CI_PROJECT_PATH}" - cd "/go/src/gitlab.wangxu.com/${CI_PROJECT_PATH}/" stages: - test - build - release - review - deploy test: stage: test script: - make test test2: stage: test script: - sleep 3 - echo "We did it! Something else runs in parallel!" compile: stage: build script: # Add here all the dependencies, or use glide/govendor/... # to get them automatically. - make build artifacts: paths: - app image_build: stage: release image: docker:latest variables: DOCKER_DRIVER: overlay DOCKER_HOST: tcp://localhost:2375 services: - name: docker:17.03-dind command: ["--insecure-registry=harbor.wangxu.com"] script: - docker info - docker login -u "${CI_REGISTRY_USER}" -p "${CI_REGISTRY_PASSWORD}" "${CI_REGISTRY}" - docker build -t "${CI_REGISTRY_IMAGE}:latest" . - docker tag "${CI_REGISTRY_IMAGE}:latest" "${CI_REGISTRY}/library/${CI_REGISTRY_IMAGE}:${CI_COMMIT_REF_NAME}" - test ! -z "${CI_COMMIT_TAG}" && docker push "${CI_REGISTRY_IMAGE}:latest" - docker push "${CI_REGISTRY}/library/${CI_REGISTRY_IMAGE}:${CI_COMMIT_REF_NAME}" deploy_review: image: cnych/kubectl stage: review only: - branches except: - tags environment: name: dev url: https://dev-gitlab-k8s-demo.wangxu.com on_stop: stop_review script: - kubectl version - cd manifests/ - sed -i "s/__CI_ENVIRONMENT_SLUG__/${CI_ENVIRONMENT_SLUG}/" deployment.yaml ingress.yaml service.yaml - sed -i "s/__VERSION__/${CI_COMMIT_REF_NAME}/" deployment.yaml ingress.yaml service.yaml - | if kubectl apply -f deployment.yaml | grep -q unchanged; then echo "=> Patching deployment to force image update." kubectl patch -f deployment.yaml -p "{\"spec\":{\"template\":{\"metadata\":{\"annotations\":{\"ci-last-updated\":\"$(date +'%s')\"}}}}}" else echo "=> Deployment apply has changed the object, no need to force image update." fi - kubectl apply -f service.yaml || true - kubectl apply -f ingress.yaml - kubectl rollout status -f deployment.yaml - kubectl get all,ing -l ref=${CI_ENVIRONMENT_SLUG} stop_review: image: cnych/kubectl stage: review variables: GIT_STRATEGY: none when: manual only: - branches except: - master - tags environment: name: dev action: stop script: - kubectl version - kubectl delete ing -l ref=${CI_ENVIRONMENT_SLUG} - kubectl delete all -l ref=${CI_ENVIRONMENT_SLUG} deploy_live: image: cnych/kubectl stage: deploy environment: name: live url: https://live-gitlab-k8s-demo.wangxu.com only: - tags when: manual script: - kubectl version - cd manifests/ - sed -i "s/__CI_ENVIRONMENT_SLUG__/${CI_ENVIRONMENT_SLUG}/" deployment.yaml ingress.yaml service.yaml - sed -i "s/__VERSION__/${CI_COMMIT_REF_NAME}/" deployment.yaml ingress.yaml service.yaml - kubectl apply -f deployment.yaml - kubectl apply -f service.yaml - kubectl apply -f ingress.yaml - kubectl rollout status -f deployment.yaml - kubectl get all,ing -l ref=${CI_ENVIRONMENT_SLUG}
上面的.gitlab-ci.yml
文件中还有一些特殊的属性,如限制运行的的when
和only
参数,例如only: ["tags"]
表示只为创建的标签运行,更多的信息,我可以通过查看 Gitlab CI YAML 文件查看:https://docs.gitlab.com/ce/ci/yaml/README.html
由于我们在.gitlab-ci.yml
文件中将应用的镜像构建完成后推送到了我们的私有仓库,而 Kubernetes 资源清单文件中使用的私有镜像,所以我们需要配置一个imagePullSecret
,否则在 Kubernetes 集群中是无法拉取我们的私有镜像的:(替换下面相关信息为自己的)
# kubectl create secret docker-registry myregistry --docker-server=harbor.wangxu.com --docker-username=admin --docker-password=Harbor12345 --docker-email=314144952@qq.com -n gitlab secret/myregistry created
在下面的 Deployment 的资源清单文件中会使用到创建的myregistry
。
创建k8s资源清单文件
接下来为应用创建 Kubernetes 资源清单文件,添加到代码仓库中。首先创建 Deployment 资源:(deployment.yaml)
--- apiVersion: apps/v1 kind: Deployment metadata: name: gitlab-k8s-demo-__CI_ENVIRONMENT_SLUG__ namespace: gitlab labels: app: gitlab-k8s-demo ref: __CI_ENVIRONMENT_SLUG__ track: stable spec: replicas: 2 selector: matchLabels: app: gitlab-k8s-demo ref: __CI_ENVIRONMENT_SLUG__ template: metadata: labels: app: gitlab-k8s-demo ref: __CI_ENVIRONMENT_SLUG__ track: stable spec: imagePullSecrets: - name: myregistry containers: - name: app image: harbor.wangxu.com/library/gitlab-ci-k8s-demo:__VERSION__ #注意是harbor地址,原作者github有不一致的地方,注意看日志调整 imagePullPolicy: Always ports: - name: http-metrics protocol: TCP containerPort: 8000 livenessProbe: httpGet: path: /health port: 8000 initialDelaySeconds: 3 timeoutSeconds: 2 readinessProbe: httpGet: path: /health port: 8000 initialDelaySeconds: 3 timeoutSeconds: 2
#注意用上面创建的 myregistry 替换 imagePullSecrets。
这是一个基本的 Deployment 资源清单的描述,像__CI_ENVIRONMENT_SLUG__
和__VERSION__
这样的占位符用于区分不同的环境,__CI_ENVIRONMENT_SLUG__
将由 dev 或 live(环境名称)和__VERSION__
替换为镜像标签。
为了能够连接到部署的 Pod,还需要 Service。对应的 Service 资源清单如下(service.yaml):
--- apiVersion: v1 kind: Service metadata: name: gitlab-k8s-demo-__CI_ENVIRONMENT_SLUG__ namespace: gitlab labels: app: gitlab-k8s-demo ref: __CI_ENVIRONMENT_SLUG__ annotations: prometheus.io/scrape: "true" prometheus.io/port: "8000" prometheus.io/scheme: "http" prometheus.io/path: "/metrics" spec: type: ClusterIP ports: - name: http-metrics port: 8000 protocol: TCP selector: app: gitlab-k8s-demo ref: __CI_ENVIRONMENT_SLUG__
我们的应用程序运行8000端口上,端口名为http-metrics
,如果你还记得前面我们监控的课程中应该还记得我们使用prometheus-operator
为 Prometheus 创建了自动发现
的配置,所以我们在annotations
里面配置上上面的这几个注释后,Prometheus 就可以自动获取我们应用的监控指标数据了。
现在 Service 创建成功了,但是外部用户还不能访问到我们的应用,当然我们可以把 Service 设置成 NodePort 类型,另外一个常见的方式当然就是使用 Ingress 了,我们可以通过 Ingress 来将应用暴露给外面用户使用,对应的资源清单文件如下:(ingress.yaml)
--- apiVersion: extensions/v1beta1 kind: Ingress metadata: name: gitlab-k8s-demo-__CI_ENVIRONMENT_SLUG__ namespace: gitlab labels: app: gitlab-k8s-demo ref: __CI_ENVIRONMENT_SLUG__ annotations: kubernetes.io/ingress.class: "nginx" spec: rules: - host: __CI_ENVIRONMENT_SLUG__-gitlab-k8s-demo.wangxu.com http: paths: - path: / backend: serviceName: gitlab-k8s-demo-__CI_ENVIRONMENT_SLUG__ servicePort: 8000
当然如果想配置 https 访问的话我们可以自己用 CA 证书创建一个 tls 密钥,也可以使用cert-manager
来自动为我们的应用程序添加 https。
当然要通过上面的域名进行访问,还需要进行 DNS 解析的,__CI_ENVIRONMENT_SLUG__-gitlab-k8s-demo.qikqiak.com
其中__CI_ENVIRONMENT_SLUG__
值为 live 或 dev,所以需要创建dev-gitlab-k8s-demo.wangxu.com
和 live-gitlab-k8s-demo.wangxu.com
两个域名的解析。
我们可以使用 DNS 解析服务商的 API 来自动创建域名解析,也可以使用 Kubernetes incubator 孵化的项目 external-dns operator 来进行操作。
触发gitlab-CI
所需要的资源清单和.gitlab-ci.yml
文件已经准备好了,我们可以小小的添加一个文件去触发下 Gitlab CI 构建:
touch test1 git add . git commit -m"Testing the GitLab CI functionality #1" git push origin master
还是失败了,我的node节点没有配置harbor的域名
Warning Failed 1s (x2 over 16s) kubelet, k8s-node-2 Failed to pull image "harbor.wangxu.com/library/gitlab-ci-k8s-demo:master": rpc error: code = Unknown desc = Error response from daemon: Get https://harbor.wangxu.com/v2/: x509: certificate signed by unknown authority Warning Failed 1s (x2 over 16s) kubelet, k8s-node-2 Error: ErrImagePull [root@k8s-master gitlab-ci-k8s-demo]#
[root@k8s-node-1 ~]# tail /etc/hosts 10.6.76.23 gitlab.wangxu.com harbor.wangxu.com 10.6.76.24 gitlab.wangxu.com harbor.wangxu.com [root@k8s-node-1 ~]# vim /etc/docker/daemon.json [root@k8s-node-1 ~]# systemctl restart docker [root@k8s-node-1 ~]# cat /etc/docker/daemon.json { "registry-mirrors": ["http://hub-mirror.c.163.com"], "insecure-registries": ["harbor.wangxu.com"] } [root@k8s-node-1 ~]#
真是被自己坑死了,再重新构建
整个 Pipeline 构建成功后,我们可以在项目的环境菜单下面看到多了一个环境:
#解析 ingress域名 10.6.76.23 dev-gitlab-k8s-demo.wangxu.com 10.6.76.24 dev-gitlab-k8s-demo.wangxu.com
瑕疵和没有解决的
终止操作无效啊。
按照设定
- kubectl delete ing -l ref=${CI_ENVIRONMENT_SLUG}
- kubectl delete all -l ref=${CI_ENVIRONMENT_SLUG}
但是无效,调试几次还是不行,不过也不影响实现了 gitlac-CI部署。有缘看到的,看是否遇到