import mysql data to kubernetes pod - mysql

Question

Does anyone know how to import the data inside my dump.sql file to a kubernetes pod either;
Directly,same way as you dealing with docker containers:
docker exec -i container_name mysql -uroot --password=secret database < Dump.sql
Or using the data stored in an existing docker container volume and pass it to the pod .

Answer 1

Just if other people are searching for this :
kubectl -n namespace exec -i my_sql_pod_name -- mysql -u user -ppassword < my_local_dump.sql

Answer 2

To answer your specific question:
You can kubectl exec into your container in order to run commands inside it. You may need to first ensure that the container has access to the file, by perhaps storing it in a location that the cluster can access (network?) and then using wget/curl within the container to make it available. One may even open up an interactive session with kubectl exec.
However, the ways to do this in increasing measure of generality would be:
Create a service that lets you access the mysql instance running on the pod from outside the cluster and connect your local mysql client to it.
If you are executing this initialization operation every time such a mysql pod is being started, it could be stored on a persistent volume and you could execute the script within your pod when you start up.
If you have several pieces of data that you typically need to copy over when starting the pod, look at init containers for fetching that data.

Answer 3

TL;DR
Using ConfigMaps and then use that ConfgMap as a mount into the /docker-entrypoint-initdb.d folder
Code
MySQL Deployment
apiVersion: apps/v1
kind: Deployment
metadata:
name: mysql
spec:
replicas: 1
selector:
matchLabels:
app: mysql
strategy:
type: Recreate
template:
metadata:
labels:
app: mysql
spec:
containers:
- name: mysql
image: mysql:5.6
env:
- name: MYSQL_ROOT_PASSWORD
value: dbpassword11
ports:
- containerPort: 3306
name: mysql
volumeMounts:
- name: mysql-persistent-storage
mountPath: /var/lib/mysql
- name: usermanagement-dbcreation-script
mountPath: /docker-entrypoint-initdb.d #https://hub.docker.com/_/mysql Refer Initializing a fresh instance
volumes:
- name: mysql-persistent-storage
persistentVolumeClaim:
claimName: ebs-mysql-pv-claim
- name: usermanagement-dbcreation-script
configMap:
name: usermanagement-dbcreation-script
MySQL ConfigMap
apiVersion: v1
kind: ConfigMap
metadata:
name: usermanagement-dbcreation-script
data:
mysql_usermgmt.sql: |-
DROP DATABASE IF EXISTS usermgmt;
CREATE DATABASE usermgmt;
Reference:
https://github.com/stacksimplify/aws-eks-kubernetes-masterclass/blob/master/04-EKS-Storage-with-EBS-ElasticBlockStore/04-02-SC-PVC-ConfigMap-MySQL/kube-manifests/04-mysql-deployment.yml
https://github.com/stacksimplify/aws-eks-kubernetes-masterclass/blob/master/04-EKS-Storage-with-EBS-ElasticBlockStore/04-02-SC-PVC-ConfigMap-MySQL/kube-manifests/03-UserManagement-ConfigMap.yml