module10

10.1 将 nginx 容器上传到 harbor

Harbor 安装

下载 helm chart

helm repo add harbor https://helm.goharbor.io
helm fetch harbor/harbor --untar

修改配置

vim harbor/values.yaml

# 测试修改的配置
expose:
  type: nodePort
tls:
  commonName: 'core.harbor.domain'

persistence: false

安装 Harbor

helm install harbor ./harbor -n harbor

获取证书

# 页面
https://10.105.111.219/harbor/configs/setting

# 接口
https://10.105.111.219/api/v2.0/systeminfo/getcert

配置 docker

mkdir -p /etc/docker/certs.d/core.harbor.domain
cp ca.crt /etc/docker/certs.d/core.harbor.domain
systemctl restart docker

docker login -u admin -p Harbor12345 core.harbor.domain

配置 containerd

cp ca.crt /etc/containerd/certs.d/core.harbor.domain/
mkdir -p /etc/containerd/certs.d/core.harbor.domain

vim /etc/containerd/certs.d/core.harbor.domain/hosts.toml
server = "https://core.harbor.domain"

[host."http://core.harbor.domain"]
  capabilities = ["pull", "resolve", "push"]
  skip_verify = true
  ca = "ca.crt"

systemctl restart containerd

修改 host

# harbor svc 的 cluster ip
10.105.111.219 core.harbor.domain

查看 repositories 和 blobs

kubectl -n harbor exec -it harbor-registry-7886456f94-vkfv5 -- bash

ls -la /storage/docker/registry/v2/repositories/
ls -la /storage/docker/registry/v2/blobs/

查看数据库数据

kubectl exec -it harbor-database-0 -- bash

psql -U postgres -d postgres -h 127.0.0.1 -p 5432
\c registry
select * from harbor_user;

10.2

10.2.1 为 HTTPServer 添加 0-2 秒的随机延时

delay := util.RandInt(0, 2000)
time.Sleep(time.Millisecond * time.Duration(delay))

10.2.2 为 HTTPServer 项目添加延时 Metric

注册指标

prometheus.Register(functionLatency)

生成监控数据

func (t *ExecutionTimer) ObserveTotal() {
	(*t.histogramVec).WithLabelValues("total").Observe(time.Now().Sub(t.start).Seconds())
}

提供接口访问

http.Handle("/metrics", promhttp.Handler())

10.2.3 将 HTTPServer 部署至测试集群，并完成 Prometheus 配置

将 HTTPServer 部署至测试集群

重新打包镜像并推送到仓库

make build-image

修改 httpserver deployment 的镜像

- image: core.harbor.domain/http-server/http_server:v10

安装 loki-stack

添加 helm repo

helm repo add grafana https://grafana.github.io/helm-charts

更新

helm repo update

安装

helm upgrade --install loki grafana/loki-stack --set grafana.enabled=true,prometheus.enabled=true,prometheus.alertmanager.persistence.enabled=false,prometheus.server.persistentVolume.enabled=false

10.2.4 从 Promethus 界面中查询延时指标数据

登录 prometheus 界面查询 http_server_execution_latency_seconds_bucket

10.2.5 创建一个 Grafana Dashboard 展现延时分配情况

获取 grafana 登录密码

kubectl get secret loki-grafana -o yaml

登录 grafana 界面并创建 dashboard

import resources/grafana-dashboard/httpserver-latency.json