RHCA之路—EX280(10)

1. 题目

On master.lab.example.com install the OpenShift Mertics component with the following requirements:
Use the storage /exports/metrics for cassandra storage. You can use the files on http://materials.example.com/exam280/storage for the pv sample.
Use the inventory, ansible.cfg in /root/install-metrics/
Use the playbook /usr/share/ansible/openshift-ansible/playbooks/openshift-metrics/config.yml for the installation
Use the following environmet variables:
openshift_metrics_image_version=3.9
openshift_metrics_heapster_requests_memory=300M
openshift_metrics_hawkular_requests_memory=750M
openshift_metrics_cassandra_requests_memory=750M
openshift_metrics_cassandra_storage_type=pv
openshift_metrics_cassandra_pvc_size=5Gi
openshift_metrics_cassandra_pvc_prefix=metrics
openshift_metrics_install_metrics=True

2. 解题

2.1 PV

2.1.1 下载pv

[root@master ex280]# cd /root/install-metrics/
[root@master install-metrics]# wget http://materials.example.com/exam280/storage/pv.yaml
--2023-09-04 17:03:08--  http://materials.example.com/exam280/storage/pv.yaml
Resolving materials.example.com (materials.example.com)... 172.25.254.254
Connecting to materials.example.com (materials.example.com)|172.25.254.254|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 230
Saving to: ‘pv.yaml’

100%[===========================================================================================================>] 230         --.-K/s   in 0s

2023-09-04 17:03:08 (44.2 MB/s) - ‘pv.yaml’ saved [230/230]

2.1.2 pv.yaml

apiVersion: v1
kind: PersistentVolume
metadata:
  name: metricspv
spec:
  capacity:
    storage: 5Gi
  accessModes:
  - ReadWriteOnce
  nfs:
    path: /exports/metrics
    server: services.lab.example.com
  persistentVolumeReclaimPolicy: Recycle

2.1.3 部署pv

[root@master install-metrics]# oc create -f pv.yaml
persistentvolume "metricspv" created

2.2 ansible配置

2.2.1 搜索镜像

[root@services ~]# docker-registry-cli registry.lab.example.com search metrics ssl

available options:-

-----------
1) Name: openshift3/ose-metrics-hawkular-metrics
Tags: latest    v3.9
-----------
2) Name: openshift3/ose-metrics-heapster
Tags: latest    v3.9
-----------
3) Name: openshift3/ose-metrics-cassandra
Tags: latest    v3.9

3 images found !

2.2.2 编辑inventory

在[OSEv3:vars]下追加以下内容

openshift_metrics_image_prefix=registry.lab.example.com/openshift3/ose-
openshift_metrics_image_version=v3.9
openshift_metrics_heapster_requests_memory=300M
openshift_metrics_hawkular_requests_memory=750M
openshift_metrics_cassandra_requests_memory=750M
openshift_metrics_cassandra_storage_type=pv
openshift_metrics_cassandra_pvc_size=5Gi
openshift_metrics_cassandra_pvc_prefix=metrics
openshift_metrics_install_metrics=True

2.2.3 使用ansible部署项目

[root@master install-metrics]# ansible-playbook /usr/share/ansible/openshift-ansible/playbooks/openshift-metrics/config.yml

3. 确认

[root@master install-metrics]# oc get route -n openshift-infra
NAME               HOST/PORT                               PATH      SERVICES           PORT      TERMINATION   WILDCARD
hawkular-metrics   hawkular-metrics.apps.lab.example.com             hawkular-metrics   <all>     reencrypt     None

workstation服务器上访问
http://hawkular-metrics.apps.lab.example.com/

workstation服务器上访问
https://master.lab.example.com/
选择任意项目

打开application—>pods
进入任意pod,点击Metrics选项卡
可以看到数据即说明该题基本正确

以上便是RHCA 280全部考试内容