Part3 工作负载和调度

08. 扩容 Deployment (4%)

Task

Scale the deployment loadbalancer to 6 pods.

中文解释：

扩容名称为 loadbalancer 的 Deployment 资源的副本数为 6

解题：

kubectl scale deployment loadbalancer --replicas=6

kubectl get pod

09. 调度 Pod (4%)

Task

Schedule a pod as follows:

• Name: nginx-kusc00401

• Image: nginx

• Node selector: disk=spinning

中文解释：

创建一个 Pod ，名称为：nginx-kusc00401 ，镜像地址是：nginx ，调度到具有 disk=spinning 标签的接点上

解题：

cat > 09-pod.yaml << EOF
apiVersion: v1
kind: Pod
metadata:
  name: nginx
spec:
  containers:
  - name: nginx
    image: nginx
    imagePullPolicy: IfNotPresent
  nodeSelector:
    disk: spinning
EOF

kubectl create -f 09-pod.yaml

kubectl get nodes --show-labels

kubectl get pod -o wide

10. 统计节点数 (4%)

Task

Check to see how many nodes are ready (not including nodes tainted NoSchedule ) and write the number to /opt/KUSC00402/kusc00402.txt .

中文解释：

检查集群中有多少节点为 ready 状态（不包含有 NoSchedule 污点的节点），然后将数字写入到 /opt/KUSC00402/kusc00402.txt 文件中。

解题：

# 记录节点总数为 A
kubectl get node | grep -i ready

# 记录有 NoSchedule 污点的节点数为 B
kubectl describe nodes | grep Taint | grep NoSchedule

# 将 A - B 的值 x 写入到文件 /opt/KUSC00402/kusc00402.txt 中
echo "x" >> /opt/KUSC00402/kusc00402.txt

cat /opt/KUSC00402/kusc00402.txt

11. 创建多容器 Pod (4%)

Task

Create a pod named kucc1 with a single app container for each of the following images running inside (there may be between 1 and 4 images specified): nginx + redis + memcached + consul .

中文解释：

创建一个 Pod 名称为 kucc1 ，这个 Pod 可能包含 1-4 个容器，该题为4个：nginx + redis + memcached + consul

解题：

cat > 11-pod.yaml << EOF
apiVersion: v1
kind: Pod
metadata:
  name: kucc1
spec:
  containers:
  - name: nginx
    image: nginx
  - name: redis
    image: redis
  - name: memcached
    image: memcached
  - name: consul
    image: consul
EOF

kubectl create -f 11-pod.yaml

kubectl get pod -o wide