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moby--moby/integration-cli/docker_api_swarm_node_test.go

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// +build !windows
package main
import (
"time"
"github.com/docker/docker/api/types/swarm"
"github.com/docker/docker/integration-cli/checker"
"github.com/docker/docker/integration-cli/daemon"
"github.com/go-check/check"
)
func (s *DockerSwarmSuite) TestAPISwarmListNodes(c *check.C) {
d1 := s.AddDaemon(c, true, true)
d2 := s.AddDaemon(c, true, false)
d3 := s.AddDaemon(c, true, false)
nodes := d1.ListNodes(c)
c.Assert(len(nodes), checker.Equals, 3, check.Commentf("nodes: %#v", nodes))
loop0:
for _, n := range nodes {
for _, d := range []*daemon.Swarm{d1, d2, d3} {
if n.ID == d.NodeID {
continue loop0
}
}
c.Errorf("unknown nodeID %v", n.ID)
}
}
func (s *DockerSwarmSuite) TestAPISwarmNodeUpdate(c *check.C) {
d := s.AddDaemon(c, true, true)
nodes := d.ListNodes(c)
d.UpdateNode(c, nodes[0].ID, func(n *swarm.Node) {
n.Spec.Availability = swarm.NodeAvailabilityPause
})
n := d.GetNode(c, nodes[0].ID)
c.Assert(n.Spec.Availability, checker.Equals, swarm.NodeAvailabilityPause)
}
func (s *DockerSwarmSuite) TestAPISwarmNodeRemove(c *check.C) {
testRequires(c, Network)
d1 := s.AddDaemon(c, true, true)
d2 := s.AddDaemon(c, true, false)
_ = s.AddDaemon(c, true, false)
nodes := d1.ListNodes(c)
c.Assert(len(nodes), checker.Equals, 3, check.Commentf("nodes: %#v", nodes))
// Getting the info so we can take the NodeID
d2Info, err := d2.SwarmInfo()
c.Assert(err, checker.IsNil)
// forceful removal of d2 should work
d1.RemoveNode(c, d2Info.NodeID, true)
nodes = d1.ListNodes(c)
c.Assert(len(nodes), checker.Equals, 2, check.Commentf("nodes: %#v", nodes))
// Restart the node that was removed
d2.Restart(c)
// Give some time for the node to rejoin
time.Sleep(1 * time.Second)
// Make sure the node didn't rejoin
nodes = d1.ListNodes(c)
c.Assert(len(nodes), checker.Equals, 2, check.Commentf("nodes: %#v", nodes))
}
func (s *DockerSwarmSuite) TestAPISwarmNodeDrainPause(c *check.C) {
d1 := s.AddDaemon(c, true, true)
d2 := s.AddDaemon(c, true, false)
time.Sleep(1 * time.Second) // make sure all daemons are ready to accept tasks
// start a service, expect balanced distribution
instances := 8
id := d1.CreateService(c, simpleTestService, setInstances(instances))
waitAndAssert(c, defaultReconciliationTimeout, d1.CheckActiveContainerCount, checker.GreaterThan, 0)
waitAndAssert(c, defaultReconciliationTimeout, d2.CheckActiveContainerCount, checker.GreaterThan, 0)
waitAndAssert(c, defaultReconciliationTimeout, reducedCheck(sumAsIntegers, d1.CheckActiveContainerCount, d2.CheckActiveContainerCount), checker.Equals, instances)
// drain d2, all containers should move to d1
d1.UpdateNode(c, d2.NodeID, func(n *swarm.Node) {
n.Spec.Availability = swarm.NodeAvailabilityDrain
})
waitAndAssert(c, defaultReconciliationTimeout, d1.CheckActiveContainerCount, checker.Equals, instances)
waitAndAssert(c, defaultReconciliationTimeout, d2.CheckActiveContainerCount, checker.Equals, 0)
// set d2 back to active
d1.UpdateNode(c, d2.NodeID, func(n *swarm.Node) {
n.Spec.Availability = swarm.NodeAvailabilityActive
})
instances = 1
d1.UpdateService(c, d1.GetService(c, id), setInstances(instances))
waitAndAssert(c, defaultReconciliationTimeout*2, reducedCheck(sumAsIntegers, d1.CheckActiveContainerCount, d2.CheckActiveContainerCount), checker.Equals, instances)
instances = 8
d1.UpdateService(c, d1.GetService(c, id), setInstances(instances))
// drained node first so we don't get any old containers
waitAndAssert(c, defaultReconciliationTimeout, d2.CheckActiveContainerCount, checker.GreaterThan, 0)
waitAndAssert(c, defaultReconciliationTimeout, d1.CheckActiveContainerCount, checker.GreaterThan, 0)
waitAndAssert(c, defaultReconciliationTimeout*2, reducedCheck(sumAsIntegers, d1.CheckActiveContainerCount, d2.CheckActiveContainerCount), checker.Equals, instances)
d2ContainerCount := len(d2.ActiveContainers())
// set d2 to paused, scale service up, only d1 gets new tasks
d1.UpdateNode(c, d2.NodeID, func(n *swarm.Node) {
n.Spec.Availability = swarm.NodeAvailabilityPause
})
instances = 14
d1.UpdateService(c, d1.GetService(c, id), setInstances(instances))
waitAndAssert(c, defaultReconciliationTimeout, d1.CheckActiveContainerCount, checker.Equals, instances-d2ContainerCount)
waitAndAssert(c, defaultReconciliationTimeout, d2.CheckActiveContainerCount, checker.Equals, d2ContainerCount)
}