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

Chapter 11 ■ Using ConfigMaps
Creating ConfigMaps from Files
Next, we shall create a ConfigMap using only some of the files in the /mysql/env directory. Only the
MYSQL_ROOT_PASSWORD environment variable is mandatory. As an example, create a ConfigMap called mysqlconfig-2
from the mysql.allow.empty.password and mysql.root.password files.
/kubectl create configmap mysql-config-2 --from-file=/mysql/env/mysql.root.password --fromfile=/mysql/env/mysql.allow.empty.password
The mysql-config-2 ConfigMap is created as shown in Figure 11-12. Next, describe the ConfigMap. The
two key/value pairs are listed. The ConfigMap may also be listed as a YAML.
Figure 11-12. Creating ConfigMap from files
Next, consume the ConfigMap in a replication controller definition file mysql.yaml.
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