Exercise

Using a New NTP Source Exercise

Task

Point servera at a specific NTP server instead of the default pool, and confirm it synchronizes.

Confirm chrony is installed and running
```
rpm -q chrony
systemctl is-enabled chronyd
systemctl is-active chronyd
timedatectl
```
System clock synchronized: yes and NTP service: active are what you want to see.
Read the current sources
```
chronyc sources -v
```
Reading the markers ^* is the source in use, ^+ is an acceptable alternative, and ^- was excluded. The number after the name is that source's stratum.
Replace the pool

Keep a copy first, then change the pool line.
```
sudo cp /etc/chrony.conf /etc/chrony.conf.orig
sudo vim /etc/chrony.conf
```
Search with /^pool, replace the line with C, and type:
```
pool time.google.com iburst
```

chrony reads its configuration at startup.

sudo systemctl restart chronyd
systemctl is-active chronyd

sudo mv /etc/chrony.conf.orig /etc/chrony.conf
sudo systemctl restart chronyd
chronyc sources -v