Openshift oc patch not executing initdb.sql from /docker-entrypoint-initdb.d - docker

Question

OpenShift:
I have the below MySQL Deployment
apiVersion: apps/v1
kind: Deployment
metadata:
name: mysql-master
spec:
selector:
matchLabels:
app: mysql-master
strategy:
type: Recreate
template:
metadata:
labels:
app: mysql-master
spec:
volumes:
- name: mysql-persistent-storage
persistentVolumeClaim:
claimName: ro-mstr-nfs-datadir-claim
containers:
- image: mysql:5.7
name: mysql-master
env:
- name: MYSQL_SERVER_CONTAINER
value: mysql
- name: MYSQL_ROOT_PASSWORD
valueFrom:
secretKeyRef:
name: mysql-secret
key: MYSQL_ROOT_PASSWORD
- name: MYSQL_DATABASE
valueFrom:
secretKeyRef:
name: mysql-secret
key: MYSQL_DATABASE
- name: MYSQL_USER
valueFrom:
secretKeyRef:
name: mysql-secret
key: MYSQL_USER
- name: MYSQL_PASSWORD
valueFrom:
secretKeyRef:
name: mysql-secret
key: MYSQL_PASSWORD
ports:
- containerPort: 3306
name: mysql-master
volumeMounts:
- name: mysql-persistent-storage
mountPath: /var/lib/mysql
I created a deployment using this yml file which created a deployment and pod which is successfully running.
And I have a configmap
apiVersion: v1
kind: ConfigMap
metadata:
name: ro-mstr-mysqlinitcnfgmap
data:
initdb.sql: |-
CREATE TABLE aadhaar ( name varchar(255) NOT NULL,
sex char NOT NULL, birth DATE NOT NULL, death DATE NULL,
id int(255) NOT NULL AUTO_INCREMENT, PRIMARY KEY (id) );
CREATE USER 'usera'#'%' IDENTIFIED BY 'usera';
GRANT REPLICATION SLAVE ON *.* TO 'usera' IDENTIFIED BY 'usera';
FLUSH PRIVILEGES;
Now I need to patch the above deployment using this configmap. I am using the below command
oc patch deployment mysql-master -p '{ "spec": { "template": { "spec": { "volumes": [ { "name": "ro-mysqlinitconf-vol", "configMap": { "name": "ro-mstr-mysqlinitcnfgmap" } } ], "containers": [ { "image": "mysql:5.7", "name": "mysql-master", "volumeMounts": [ { "name": "ro-mysqlinitconf-vol", "mountPath": "/docker-entrypoint-initdb.d" } ] } ] } } } }'
So the above command is successful, I validated the Deployment description and inside the container it placed the initdb.sql file successfully, and recreated the pod. But the issue is it has not created the aadhaar table. I think it has not executed the initdb.sql file from docker-entrypoint-initdb.d.

Answer 1

If you dive into the entrypoint script in your image (https://github.com/docker-library/mysql/blob/75f81c8e20e5085422155c48a50d99321212bf6f/5.7/docker-entrypoint.sh#L341-L350) you can see it only runs the initdb.d files if it is also creating the database the first time. I think maybe you assumed it always ran them on startup?