Stateful Applications in Kubernetes.

1. Examples of Stateful Applications:

• Databases: MySQL, PostgreSQL, MongoDB.
• Message Queues: RabbitMQ, Apache Kafka.
• File Storage: Network-attached storage (NAS) systems.

2. Characteristics of Stateful Applications:

• Persistent Data: Stateful applications rely on data that must persist beyond the lifetime of individual pods (containers). This data can include database records, configuration files, and logs.
• Stable Network Identity: Each instance of a stateful application often requires a stable network identity, typically associated with a hostname or service name.
• Ordered Deployment: Stateful applications often require ordered deployment and scaling, ensuring that specific pods come up or scale down in a controlled manner.

Pros of Running Stateful Applications in Kubernetes:

1. Orchestration: Kubernetes provides a powerful orchestration platform for deploying and managing stateful applications. It handles pod creation, scaling, and maintenance tasks efficiently.
2. Dynamic Provisioning: Kubernetes offers dynamic provisioning for persistent storage volumes, making it easier to attach and detach storage as pods scale up or down.