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SRE讀書會#3 深入剖析Kubernates_CH6 白話容器基礎（二）-隔離與限制

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Avatar for 曾義格 曾義格
March 21, 2019
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SRE讀書會#3 深入剖析Kubernates_CH6 白話容器基礎（二）-隔離與限制

Avatar for 曾義格

曾義格

March 21, 2019

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Transcript

  1. 隔離與限制 Cgroup

  2. Linux Control Group • ⽤用途：限制處理理序可使⽤用的資源 • 提供的功能： • 限制 •

    優先權控制 • 統計稽核 • 控制-恢復或是暫停處理理程序 • 以file system的⽅方式呈現`/sys/fs/cgroup/` • blkio • cpu • memory • net_cls • 等等...

  3. 限制cpu使⽤用 • 當前使⽤用者的限制在 `/sys/fs/cgroup/<資源>/user.slice/` • docker啟動之後，會在 `/sys/fs/cgroup/<資源>/docker` 下 建立容器的限制組， •

    demo

  4. docker • —cpu-quota • —cpu-period • —memory

  5. 問題 • lxcfs • free • top-記憶體、cpu數、cpu使⽤用率