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Week 06 challenges #6

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165 changes: 165 additions & 0 deletions WEEK6/CHALLENGES.md
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#### 1. Create a deployment named “apache” that uses the image httpd:2.4.54 and contains three pod replicas.

##### Commands

```bash
# create apache deployment with 3 replicas
k create deploy apache --image=httpd:2.4.54 --replicas=3

# check the deployments
k get deploy

# check the replicasets
k get rs

# check the pods
k get po -o wide

```

##### Commands Output

```bash
# create apache deployment with 3 replicas
controlplane $ k create deploy apache --image=httpd:2.4.54 --replicas=3
deployment.apps/apache created

# check the deployments
controlplane $ k get deploy
NAME READY UP-TO-DATE AVAILABLE AGE
apache 3/3 3 3 61s

# check the replicasets
controlplane $ k get rs
NAME DESIRED CURRENT READY AGE
apache-74f79bcc68 3 3 3 50s


# check the pods.
controlplane $ k get po -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
apache-74f79bcc68-bc2fh 1/1 Running 0 26s 192.168.1.5 node01 <none> <none>
apache-74f79bcc68-m4xsh 1/1 Running 0 26s 192.168.1.4 node01 <none> <none>
apache-74f79bcc68-pcjkw 1/1 Running 0 26s 192.168.0.7 controlplane <none> <none>

```


#### 2. After the deployment has been created, scale the deployment to five replicas

##### Commands

```bash
# scale deployment to 5 replicas
k scale deploy apache --replicas=5

# check the deployments
k get deploy

# check the replicasets
k get rs

# check the pods
k get po -o wide
```

##### Commands Output

```bash
# scale deployment to 5 replicas
controlplane $ k scale deploy apache --replicas=5
deployment.apps/apache scaled

# check the deployments
controlplane $ k get deploy
NAME READY UP-TO-DATE AVAILABLE AGE
apache 5/5 5 5 8m34s

# check the replicasets
controlplane $ k get rs
NAME DESIRED CURRENT READY AGE
apache-74f79bcc68 5 5 5 8m34s

# check the pods
controlplane $ k get po -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
apache-74f79bcc68-bc2fh 1/1 Running 0 8m34s 192.168.1.5 node01 <none> <none>
apache-74f79bcc68-fn68h 1/1 Running 0 3m11s 192.168.1.6 node01 <none> <none>
apache-74f79bcc68-m4xsh 1/1 Running 0 8m34s 192.168.1.4 node01 <none> <none>
apache-74f79bcc68-pcjkw 1/1 Running 0 8m34s 192.168.0.7 controlplane <none> <none>
apache-74f79bcc68-sq9hd 1/1 Running 0 3m11s 192.168.0.8 controlplane <none> <none>
```


#### 3. Change the image for the "apache" deployment to httpd:alpine

##### Commands

```bash
# change the image to httpd:alpine
k set image deploy apache httpd=httpd:alpine
```

##### Commands Output

```bash
# change the image to httpd:alpine
controlplane $ k set image deploy apache httpd=httpd:alpine
deployment.apps/apache image updated
```


#### 4. Look at the rollout history, then go back to the previous rollout (roll back)

##### Commands

```bash
# Look at the rollout history
k rollout history deploy apache

# rollback
k rollout undo deploy apache

# check replicasets
k get rs

# check pods
k get po -o wide

k describe po apache-*-* | grep -i image:
```

##### Commands Output

```bash
# Look at the rollout history
controlplane $ k rollout history deploy apache
deployment.apps/apache
REVISION CHANGE-CAUSE
1 <none>
2 <none>

# rollback
controlplane $ k rollout undo deploy apache
deployment.apps/apache rolled back

# check replicasets
controlplane $ k get rs
NAME DESIRED CURRENT READY AGE
apache-698b8cccbd 0 0 0 7m36s
apache-74f79bcc68 5 5 5 19m

# check pods
controlplane $ k get po -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
apache-74f79bcc68-6swvn 1/1 Running 0 51s 192.168.1.11 node01 <none> <none>
apache-74f79bcc68-7wxc6 1/1 Running 0 52s 192.168.1.10 node01 <none> <none>
apache-74f79bcc68-h4dk2 1/1 Running 0 50s 192.168.1.12 node01 <none> <none>
apache-74f79bcc68-jkwq8 1/1 Running 0 52s 192.168.0.11 controlplane <none> <none>
apache-74f79bcc68-n4gzx 1/1 Running 0 50s 192.168.0.12 controlplane <none> <none>

# check one of the pods and see that its image is set back to httpd:2.4.54
controlplane $ k describe po apache-74f79bcc68-6swvn | grep -i image:
Image: httpd:2.4.54
```