Container orchestration
1. Container orchestration
There are many tasks cloud security professionals need to perform on a regular basis. That’s a big responsibility. So, how do they manage them all? Well, orchestration can help. Orchestration is useful because it manages a full set of automated tasks for you. For example, it manages deployment, scaling, load balancing, networking, provisioning, lifecycle management, and container availability. And, orchestration itself can also be automated. To use orchestration, use declarative programming. With declarative programming, you can write a configuration file focused on the desired outcome of an automation instead of detailing the steps needed to complete a task. Then, you can choose a platform or tool to find the appropriate host for your containers. Orchestration tools choose a host based on the requirements or predetermined constraints in the configuration files. These tools also schedule container deployments. Container orchestration tools help automate a variety of operational tasks. For example, these tools scale containers and load balance, and allocate resources between containers. Additionally, orchestration tools monitor the health and performance of the application. There are several orchestration platforms available. For example, the Kubernetes engine is a popular platform that enables you to configure infrastructure to run your containerized apps. This infrastructure includes networking, hardware, scaling, and security. It also manages underlying components, like nodes, pods, and container clusters for you. Nodes are machines that can be either physical or virtual, and include one or more containerized applications which are known as pods. A pod uses shared resources and a specification on how to run containers. Pods are grouped by container clusters. A pod uses shared resources and a specification on how to run containers. Pods are grouped by container clusters. Container clusters are dynamic systems that manage and place containers, grouped in pods. Container clusters run on nodes, along with all the interconnections and communication channels. Once an image is deployed to the Kubernetes engine, it goes into a cluster, through a load balancer, and into several nodes containing pods. Clusters can be set up for a single zone, or for a region. If the clusters are set up for a region, they’re replicated across multiple zones. Setting up a regional cluster can help minimize disruptions, but it can also use a lot of resources. So, it’s important to use horizontal autoscaling. You can use horizontal autoscaling to increase or decrease the number of pods based on utilization. And, you can use virtual autoscaling to scale your clusters for both pods and nodes. Orchestration can automate policies, and keep errors from happening. Imagine a container is about to be deployed, but it has vulnerabilities that violate a policy. If a violation of the policy is found during orchestration, deployment will be stopped. This can help you avoid human error, and ensure the container is safely deployed. Role-based Access Control, or RBAC is a type of identity and access management, or IAM, that is central to Kubernetes operations. It involves a template or permission set that determines who can execute what, and where it can be executed. With RBAC, you can create and grant roles for any object or object type within a cluster. A role defines access to only resources within a single namespace, while a cluster role defines access to the entire cluster’s resources. RBAC can help keep your clusters safe, but there are some things to avoid. Because the cluster-admin role grants unlimited access, never grant cluster-admin access to any users or teams that don’t need high-level access. Also, avoid aggregating or combining privileges. Combining them may change the access they grant. It’s also important to avoid creating roles that are not used. Orchestration does a lot for you. To be safe, always be sure to carefully assign roles, and only give access to those who need it. Now that you know how it can help you with cloud security, you can use it to manage your automated tasks. Orchestration can also help you prevent security risks.2. Let's practice!
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