항상 동일한 버전의 Prometheus를 사용하는 방법 (이미지 버전을 변경하고 싶지 않음)

13329 단어 Ansible 도커 centos7 prometheus

1 소개

다음 조건에서 Prometheus를 시작하고 싶습니다.

항상 같은 버전의 prometheus, node-exporter 이미지를 사용하고 싶습니다.

이미지를 통제 된 조직의 서버에 저장합니다. (저장 된 이미지를 마음대로 삭제할 수 없음)

그러나, 개인 Docker 레지스트리는 사용하지 않는다. (또는 사용할 수 없음)

가상 머신의 환경 구축시에 Prometheus를 인스톨 하고 싶다.

2 검증 환경

가상 머신은 2대

가상 머신 이름은 master1,master2

각 가상 머신의 OS는 CentOS7.2

   +---- master1 ----+      +---- master2 ----+
   |   (CentOS7.2)   |      |   (CentOS7.2)   |
   |                 |      |                 |
   |  prometheus     |      |                 |
   |  node-exporter  |      |  node-exporter  |
   |                 |      |                 |
   +----- eth0 ------+      +----- eth0 ------+
           |                         |
   +------------------------------------------+
   |              VMWare Workstation          |
   +------------------------------------------+

3 검증을 위한 준비

検証で使うイメージをあらかじめダウンロードする。master1だけでよい。
[root@master1 prometheus]# docker pull quay.io/coreos/prometheus:0.19.2
[root@master1 prometheus]# docker pull docker.io/prom/node-exporter

dockerイメージを確認する。
[root@master1 prometheus]# docker images |grep prom
docker.io/prom/node-exporter       latest        7faa2f21a307        8 weeks ago         14.56 MB
quay.io/coreos/prometheus          0.19.2        1adebd6630d9        7 months ago        43.17 MB

dockerイメージをtarファイルに変換する。
[root@master1 ansible]# docker save quay.io/coreos/prometheus:0.19.2 > prometheus.tar
[root@master1 ansible]# ls prometheus.tar
prometheus.tar

dockerイメージをtarファイルに変換する。
[root@master1 ansible]# docker save docker.io/prom/node-exporter > node-exporter.tar
[root@master1 ansible]# ls node-exporter.tar
node-exporter.tar

tarファイルに変換したあと、イメージを削除する。（テストのため）
この時点で、master1でprometheusとnode-exporterイメージは存在しないことになる。
[root@master1 prometheus]# docker rmi quay.io/coreos/prometheus:0.19.2
[root@master1 prometheus]# docker rmi docker.io/prom/node-exporter
[root@master1 prometheus]# docker images |grep prom
[root@master1 prometheus]#

ファイルを確認する。作成したtarファイルが確認できる。yamlファイルの中身は、あとに記載。
[root@master1 prometheus]# ls
node-exporter.tar  node-exporter.yaml  prometheus-configmap-1.yaml  prometheus-deployment.yaml  prometheus.tar
[root@master1 prometheus]#

4 플레이북 만들기

이야기를 쉽게하기 위해 playbook은 서버에서 tar 파일을 다운로드하는 대신
master1에 있는 tar 파일을 사용한다는 내용으로 되어 있다.

インベントリファイルを作成する。
[root@master1 ansible]# vi hosts
[root@master1 ansible]# cat hosts
[master]
master1
master2

playbookファイルを作成する。
[root@master1 ansible]# vi test.yml
[root@master1 ansible]# cat test.yml
- hosts: master1
  tasks:
    - name: copying prometheus.tar
      copy: src=/root/prometheus/prometheus.tar dest=/tmp/
    - name: copying node-exporter.tar
      copy: src=/root/prometheus/node-exporter.tar dest=/tmp/
    - name: unarchiving prometheus.tar
      shell: docker load -i /tmp/prometheus.tar
    - name: unarchiving node-exporter.tar
      shell: docker load -i /tmp/node-exporter.tar
    - name: removing files
      file: path=/tmp/prometheus.tar state=absent
    - name: removing files
      file: path=/tmp/node-exporter.tar state=absent
- hosts: master2
  tasks:
    - name: copying node-exporter.tar
      copy: src=/root/prometheus/node-exporter.tar dest=/tmp/
    - name: unarchiving node-exporter.tar
      shell: docker load -i /tmp/node-exporter.tar
    - name: removing files
      file: path=/tmp/node-exporter.tar state=absent
- hosts: master1
  tasks:
    - name: copying
      copy: src=/root/prometheus/node-exporter.yaml dest=/tmp/
    - name: copying
      copy: src=/root/prometheus/prometheus-configmap-1.yaml dest=/tmp/
    - name: copying
      copy: src=/root/prometheus/prometheus-deployment.yaml dest=/tmp/
    - name:
      shell: kubectl create -f /tmp/prometheus-configmap-1.yaml
    - name:
      shell: kubectl create -f /tmp/prometheus-deployment.yaml
    - name:
      shell: kubectl create -f /tmp/node-exporter.yaml
    - name: removing files
      file: path=/tmp/node-exporter.yaml state=absent
    - name: removing files
      file: path=/tmp/prometheus-configmap-1.yaml state=absent
    - name: removing files
      file: path=/tmp/prometheus-deployment.yaml state=absent
[root@master1 ansible]#

作成したファイルを確認する。
[root@master1 ansible]# ls
hosts  test.yml

5 플레이북 실행

playbookを実行する。
[root@master1 ansible]# ansible-playbook -i hosts test.yml

PLAY [master1] *****************************************************************

TASK [setup] *******************************************************************
ok: [master1]

TASK [copying prometheus.tar] **************************************************
changed: [master1]

TASK [copying node-exporter.tar] ***********************************************
changed: [master1]

TASK [unarchiving prometheus.tar] **********************************************
changed: [master1]

TASK [unarchiving node-exporter.tar] *******************************************
changed: [master1]

TASK [removing files] **********************************************************
changed: [master1]

TASK [removing files] **********************************************************
changed: [master1]

PLAY [master2] *****************************************************************

TASK [setup] *******************************************************************
ok: [master2]

TASK [copying node-exporter.tar] ***********************************************
changed: [master2]

TASK [unarchiving node-exporter.tar] *******************************************
changed: [master2]

TASK [removing files] **********************************************************
changed: [master2]

PLAY [master1] *****************************************************************

TASK [setup] *******************************************************************
ok: [master1]

TASK [copying] *****************************************************************
changed: [master1]

TASK [copying] *****************************************************************
changed: [master1]

TASK [copying] *****************************************************************
changed: [master1]

TASK [command] *****************************************************************
changed: [master1]

TASK [command] *****************************************************************
changed: [master1]

TASK [command] *****************************************************************
changed: [master1]

TASK [removing files] **********************************************************
changed: [master1]

TASK [removing files] **********************************************************
changed: [master1]

TASK [removing files] **********************************************************
changed: [master1]

PLAY RECAP *********************************************************************
master1                    : ok=17   changed=15   unreachable=0    failed=0
master2                    : ok=4    changed=3    unreachable=0    failed=0

[root@master1 ansible]#

6 플레이북 실행 결과 확인

Podの状態を確認する。prometheus,node-exporterが起動できたことがわかる。
[root@master1 ansible]# kubectl get pod -o wide
NAME                          READY     STATUS    RESTARTS   AGE       NODE
node-exporter-qfsp3           1/1       Running   0          1m        master1
node-exporter-xe044           1/1       Running   0          1m        master2
prometheus-1402422302-nicfk   1/1       Running   0          1m        master1
[root@master1 ansible]#

master1でイメージを確認する。ansible-playbook実行により、イメージがインストールされていることがわかる。
[root@master1 ansible]# docker images |grep prom
docker.io/prom/node-exporter                          latest               7faa2f21a307        8 weeks ago         14.56 MB
quay.io/coreos/prometheus                             0.19.2               1adebd6630d9        7 months ago        43.17 MB
[root@master1 ansible]#

master2でイメージを確認する。ansible-playbook実行により、イメージがインストールされていることがわかる。
[root@master2 ~]# docker images |grep prom
docker.io/prom/node-exporter                          latest               7faa2f21a307        8 weeks ago         14.56 MB
[root@master2 ~]#

7 prometheus에 액세스합니다.

8 검증에 사용되는 yaml 파일

모두 3개.

--------------------------
1. node-exporter.yaml
--------------------------
[root@master1 prometheus]# cat node-exporter.yaml
apiVersion: v1
kind: Service
metadata:
  annotations:
    prometheus.io/scrape: 'true'
  labels:
    app: node-exporter
    name: node-exporter
  name: node-exporter
spec:
  clusterIP: None
  ports:
  - name: scrape
    port: 9100
    protocol: TCP
  selector:
    app: node-exporter
  type: ClusterIP
----
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: node-exporter
spec:
  template:
    metadata:
      labels:
        app: node-exporter
      name: node-exporter
    spec:
      containers:
      - image: prom/node-exporter
        name: node-exporter
        ports:
        - containerPort: 9100
          hostPort: 9100
          name: scrape
      hostNetwork: true
      hostPID: true

--------------------------------
2. prometheus-configmap-1.yaml
--------------------------------
[root@master1 prometheus]# cat prometheus-configmap-1.yaml
apiVersion: v1
kind: ConfigMap
metadata:
  name: prometheus
data:
  prometheus.yml: |-
    global:
      scrape_interval: 15s
    scrape_configs:
    # etcd is living outside of our cluster and we configure
    # it directly.
    - job_name: 'etcd'
      target_groups:
      - targets:
        - 192.168.0.10:2379      # mod (172.17.4.51:2379 => 192.168.0.10:2379)

    - job_name: 'node_exporter'  # new add
      target_groups:             # new add
      - targets:                 # new add
        - 192.168.0.10:9100      # master1=192.168.0.10
        - 192.168.0.20:9100      # master2=192.168.0.20

    - job_name: 'kubernetes_components'
      kubernetes_sd_configs:
      - api_servers:
        - 'https://kubernetes'
        in_cluster: true
        # This configures Prometheus to identify itself when scraping
        # metrics from Kubernetes cluster components.
      tls_config:
        ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
      bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
      # Prometheus provides meta labels for each monitoring targets. We use
      # these to select targets we want to monitor and to modify labels attached
      # to scraped metrics.
      relabel_configs:
      # Only scrape apiserver and kubelets.
      - source_labels: [__meta_kubernetes_role]
        action: keep
        regex: (?:apiserver|node)
      # Redefine the Prometheus job based on the monitored Kubernetes component.
      - source_labels: [__meta_kubernetes_role]
        target_label: job
        replacement: kubernetes_$1
      # Attach all node labels to the metrics scraped from the components running
      # on that node.
      - action: labelmap
        regex: __meta_kubernetes_node_label_(.+)
[root@master1 prometheus]#

--------------------------------
3. prometheus-deployment.yaml
--------------------------------
[root@master1 prometheus]# cat prometheus-deployment.yaml
apiVersion: v1
kind: Service
metadata:
  annotations:
    prometheus.io/scrape: 'true'
  labels:
    name: prometheus
  name: prometheus
spec:
  selector:
    app: prometheus
  type: NodePort
  ports:
  - name: prometheus
    protocol: TCP
    port: 9090
    nodePort: 30900
----
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: prometheus
spec:
  replicas: 1
  selector:
    matchLabels:
      app: prometheus
  template:
    metadata:
      name: prometheus
      labels:
        app: prometheus
    spec:
      containers:
      - name: prometheus
        image: quay.io/coreos/prometheus:0.19.2
        args:
          - '-storage.local.retention=6h'
          - '-storage.local.memory-chunks=500000'
          - '-config.file=/etc/prometheus/prometheus.yml'
        ports:
        - name: web
          containerPort: 9090
        volumeMounts:
        - name: config-volume
          mountPath: /etc/prometheus
      nodeSelector:                      # new add
        kubernetes.io/hostname: master1  # new add
      volumes:
      - name: config-volume
        configMap:
          name: prometheus
[root@master1 prometheus]#

9 skydns 시작시 필요한 이미지

gcr.io/google_containers/exechealthz   1.0                  82a141f5d06d        10 months ago       7.116 MB
gcr.io/google_containers/kube2sky      1.14                 a4892326f8cf        10 months ago       27.8 MB
gcr.io/google_containers/etcd-amd64    2.2.1                3ae398308ded        12 months ago       28.19 MB
gcr.io/google_containers/skydns        2015-10-13-8c72f8c   718809956625        15 months ago       40.55 MB
gcr.io/google_containers/pause         2.0                  2b58359142b0        15 months ago       350.2 kB

Reference

이 문제에 관하여(항상 동일한 버전의 Prometheus를 사용하는 방법 (이미지 버전을 변경하고 싶지 않음)), 우리는 이곳에서 더 많은 자료를 발견하고 링크를 클릭하여 보았다 https://qiita.com/hana_shin/items/bdbd9a76ded1e294e475

텍스트를 자유롭게 공유하거나 복사할 수 있습니다.하지만 이 문서의 URL은 참조 URL로 남겨 두십시오.

우수한 개발자 콘텐츠 발견에 전념 (Collection and Share based on the CC Protocol.)

Ansible+Vagrant로 간단한 Prometheus 모니터링 환경 구축

Prometheus 경고 설정

좋은 웹페이지 즐겨찾기

개발자 우수 사이트 수집

개발자가 알아야 할 필수 사이트 100선 추천 우리는 당신을 위해 100개의 자주 사용하는 개발자 학습 사이트를 정리했습니다