148422597X Kubernetes Management Design Patterns [Vohra 2017-01-29] {E559F6BB}

Chapter 8 ■ Using Rolling Updates
spec:
containers:
-
env:
-
name: MYSQL_ROOT_PASSWORD
value: mysql
image: mysql:5.5
name: mysql
ports:
-
containerPort: 3306
Next, perform a rolling update to the RC called mysql using the definition file mysql.yaml. Optionally,
specify a timeout for the rolling update. When a timeout is set, the pods updated to the new image or
specification are not rolled back after the timeout has elapsed and the rolling update has terminated. The
rolling update may be performed again and resumes from the previous update.
kubectl rolling-update mysql -f mysql.yaml --timeout=1m
The mysql RC is updated to mysql-v1 as shown in Figure 8-5. Subsequently the RC mysql is deleted.
Figure 8-5. Rolling update of a replication controller
Delete the RC mysql-v1, as we shall be using the same RC name in the next section:
kubectl delete rc mysql-v1
176