Pods @ Container Meetup Tokyo

Transcript

1. Docker & Pods
   The many forms of containers
   

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2. Confidential & Proprietary
   Google Cloud Platform 2
   Ian Lewis
   Developer Advocate - Google Cloud Platform
   Tokyo, Japan
   google.com/+IanLewis-hoge
   @IanMLewis
   

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3. Confidential & Proprietary
   Google Cloud Platform 3
   What are containers?
   

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4. Confidential & Proprietary
   Google Cloud Platform 4
   1. Linux cgroup
   2. Linux Namespace
   a. IPC
   b. Network (eth & IP address)
   c. Mount
   d. PID
   e. User
   f. UTS (Hostname & NIS)
   Containers
   

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5. Confidential & Proprietary
   Google Cloud Platform 5
   1. Linux cgroup
   2. Linux Namespace
   a. IPC
   b. Network (eth & IP address)
   c. Mount
   d. PID
   e. User
   f. UTS (Hostname & NIS)
   Containers
   Container Image
   File System
   Metadata
   

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6. Confidential & Proprietary
   Google Cloud Platform 6
   docker run nginx
   

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7. Google Cloud Platform
   Docker Containers
   IPC
   Network
   PID
   Hostname
   Mount
   nginx
   IPC
   Network
   PID
   Hostname
   Mount
   nginx
   IPC
   Network
   PID
   Hostname
   Mount
   nginx
   

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8. Google Cloud Platform
   IPC
   Network
   PID
   Hostname
   Mounts
   nginx
   IPC
   Network
   PID
   Hostname
   Mount
   git
   pull
   IPC
   Network
   PID
   Hostname
   Mount
   nginx
   Docker Containers
   

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9. Google Cloud Platform
   IPC
   Network
   PID
   Hostname
   Mounts
   nginx
   IPC
   Network
   PID
   Hostname
   Mount
   git
   pull
   IPC
   Network
   PID
   Hostname
   Mount
   nginx
   Docker Containers
   VOLUME
   VOLUME
   Host Volume
   

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10. Google Cloud Platform
    IPC
    Network
    PID
    Hostname
    IPC
    Network
    PID
    Hostname
    Mount
    git
    pull
    IPC
    Network
    PID
    Hostname
    Mount
    nginx
    Docker Containers
    nginx
    Host Volume
    

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11. Copyright 2015 Google Inc
    Container Cluster Management
    Node Node
    Cluster
    Node
    

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12. Copyright 2015 Google Inc
    Container Cluster Management
    Node Node
    Node
    VOLUME??
    VOLUME??
    Cluster
    

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13. Copyright 2015 Google Inc
    Container Cluster Management
    Node
    VOLUME
    

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14. Copyright 2015 Google Inc
    Container Cluster Management
    Node
    NFS
    NFS
    NAS
    

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15. Copyright 2015 Google Inc
    Node
    Container Cluster Management
    Node
    N
    FS
    N
    FS
    NAS
    

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16. Google Cloud Platform
    Pods & Docker?
    confd nginx
    HUP
    W
    RITE
    READ
    etcd
    CHANGE
    nginx.conf
    app
    app
    app
    IP Address
    LB
    

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17. Google Cloud Platform
    Container
    Container
    Pods & Docker?
    confd nginx
    HUP
    W
    RITE
    READ
    etcd
    CHANGE
    ?
    ? ?
    ?
    

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18. Google Cloud Platform
    Pods & Docker?
    Container
    nginx
    confd
    foreman
    

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19. Google Cloud Platform
    Container
    foreman
    Pods & Docker?
    nginx
    confd
    

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20. Google Cloud Platform
    Container
    foreman
    Pods & Docker?
    Everything’s
    A-OK!!
    nginx
    confd
    Crash-Restart
    Loop
    

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21. Kubernetes
    κυβερνήτης: Greek for “pilot” or “helmsman of a ship”
    the open source cluster manager from Google
    

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22. Google Cloud Platform
    Pods
    Small group of containers & volumes
    Tightly coupled
    The atom of scheduling & placement
    Shared namespace
    • share IP address & localhost
    • share IPC, etc.
    Managed lifecycle
    • bound to a node, restart in place
    • can die, cannot be reborn with same ID
    Example: data puller & web server
    Consumers
    Content
    Manager
    File
    Puller
    Web
    Server
    Volume
    Pod
    

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23. Google Cloud Platform
    Pods & Docker?
    confd nginx
    HUP
    W
    RITE
    READ
    etcd
    CHANGE
    nginx.conf
    app
    app
    app
    IP Address
    LB
    

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24. Google Cloud Platform
    IPC
    Network
    Pods
    docker …
    --net=container:id
    --ipc=container:id
    Hostname
    cgroup
    Web
    Server
    Pod
    cgroup
    File
    Puller
    localhost
    

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25. Google Cloud Platform
    Pods (TODO)
    docker …
    --net=container:id
    --ipc=container:id
    --pid=container:id
    https://github.com/docker
    /docker/issues/10163
    IPC
    Network
    PID
    Hostname
    cgroup
    Web
    Server
    cgroup
    File
    Puller
    localhost
    

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26. Thank you!
    Thanks!
    Ian Lewis
    twitter.com/IanMLewis
    

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