容器

Tips

• CRI - Container Runtime Interface - 运行时抽象
  • kubernetes/cri-api
  • 抽象容器运行接口
  • 先是用于 Kubernetes - 2016-12 v1.5
  • 实现
    • docker
    • containerd
• OCI - Open Container Initiative - 开发容器组织 - 定义容器标准
  • opencontainers/image-spec
  • opencontainers/runtime-spec
    • opencontainers/runc
    • kata-container
• CNI - Container Network Interface - 网络层抽象
  • containernetworking/cni
• CSI - Container Storage Interface - 存储层抽象
  • container-storage-interface/spec
• CRI-O - OCI-based implementation of Kubernetes Container Runtime Interface
  • cri-o/cri-o
• 其他运行时
  • rkt - Rocket - 2020 废弃
  • lxc
  • hpcng/singularity
• 类 VM 容器
  • Kata Containers
    • 源自 OpenStack
    • 底层 QEMU
    • 架构
  • Nabla
    • 源自 IBM
    • Unikernel
  • Firecracker
    • Virtual Machine Manager - 类似 QEMU
  • gVisor
    • 源自 Google
    • syscall 拦截模拟
• containerd
  • 基于 runc 实现 cri
  • ctr 目录
• 参考
  • Container Runtime

集群调度

• Monolithic scheduling

  • Apache Hadoop YARN denote by Yahoo
  • 用于高性能计算
  • an architecture that enforces capacity, fairness and deadlines.
  • 执行大量短期计算任务

• Two-level scheduling

  • Mesos

• Shared-state scheduling

  • Google Omega
  • Kubernetes
  • an architecture that gives control to the developers, assuming that they respect the rules concerning the priority of their jobs in the cluster
  • 执行少量长期运行服务

• Comparison of Container Schedulers

• Inproving kubernetes schedulers performance