PCA (Prometheus Certified Associate) sample exam question with answer 145

Question:
Add a description to the alert that will print out the message that looks like this Instance has low disk space on filesystem, current free space is at %

groups:
  - name: node
    rules:
      - alert: node_filesystem_free_percent
        expr: 100 * node_filesystem_free_bytes{job="node"} / node_filesystem_size_bytes{job="node"} < 10

Examples of the two metrics used in the alert can be seen below:

node_filesystem_free_bytes{device="/dev/sda3", fstype="ext4", instance="node1", job="web", mountpoint="/home"}
node_filesystem_size_bytes{device="/dev/sda3", fstype="ext4", instance="node1", job="web", mountpoint="/home"}

Choose the correct option:

1. description: Instance << $Labels.instance >> has low disk space on filesystem << $Labels.mountpoint >>, current free space is at << .Value >>%

2. description: Instance {{ .Labels.instance }} has low disk space on filesystem {{ .Labels.mountpoint }}, current free space is at {{ .Value }}%

3. description: Instance {{ .Labels=instance }} has low disk space on filesystem {{ .Labels=mountpoint }}, current free space is at {{ .Value }}%

4. description: Instance {{ .instance }} has low disk space on filesystem {{ .mountpoint }}, current free space is at {{ .Value }}%

Answer:
B - is the correct answer