Kubernetes certifications are valuable in the DevOps industry as they demonstrate proficiency in using and administering Kubernetes. The Linux Foundation offers five main certifications: CKAD, CKA, CKS, KCNA, and KCSA. These courses cover various aspects of Kubernetes, including application development, administration, and security. Obtaining a certification can help guide learning, improve career prospects, and attest to experience in effectively using Kubernetes. The cost for each exam is $395, with two attempts included in the price.