Struct bollard::service::TaskSpecPlacement[][src]

pub struct TaskSpecPlacement {
    pub constraints: Option<Vec<String, Global>>,
    pub preferences: Option<Vec<TaskSpecPlacementPreferences, Global>>,
    pub max_replicas: Option<i64>,
    pub platforms: Option<Vec<Platform, Global>>,
}

Fields

constraints: Option<Vec<String, Global>>

An array of constraint expressions to limit the set of nodes where a task can be scheduled. Constraint expressions can either use a match (==) or exclude (!=) rule. Multiple constraints find nodes that satisfy every expression (AND match). Constraints can match node or Docker Engine labels as follows: node attribute | matches | example ———————|––––––––––––––––|———————————————– node.id | Node ID | node.id==2ivku8v2gvtg4 node.hostname | Node hostname | node.hostname!=node-2 node.role | Node role (manager/worker) | node.role==manager node.platform.os | Node operating system | node.platform.os==windows node.platform.arch | Node architecture | node.platform.arch==x86_64 node.labels | User-defined node labels | node.labels.security==high engine.labels | Docker Engine’s labels | engine.labels.operatingsystem==ubuntu-14.04 engine.labels apply to Docker Engine labels like operating system, drivers, etc. Swarm administrators add node.labels for operational purposes by using the node update endpoint.

preferences: Option<Vec<TaskSpecPlacementPreferences, Global>>

Preferences provide a way to make the scheduler aware of factors such as topology. They are provided in order from highest to lowest precedence.

max_replicas: Option<i64>

Maximum number of replicas for per node (default value is 0, which is unlimited)

platforms: Option<Vec<Platform, Global>>

Platforms stores all the platforms that the service’s image can run on. This field is used in the platform filter for scheduling. If empty, then the platform filter is off, meaning there are no scheduling restrictions.

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