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25.0

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docker_api_swarm_node_test.go

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//go:build !windows

package main

import (

"fmt"

"testing"

"time"

"github.com/docker/docker/api/types/swarm"

"github.com/docker/docker/integration-cli/checker"

"github.com/docker/docker/integration-cli/daemon"

"github.com/docker/docker/testutil"

"gotest.tools/v3/assert"

"gotest.tools/v3/poll"

)

func (s *DockerSwarmSuite) TestAPISwarmListNodes(c *testing.T) {

ctx := testutil.GetContext(c)

d1 := s.AddDaemon(ctx, c, true, true)

d2 := s.AddDaemon(ctx, c, true, false)

d3 := s.AddDaemon(ctx, c, true, false)

nodes := d1.ListNodes(ctx, c)

assert.Equal(c, len(nodes), 3, fmt.Sprintf("nodes: %#v", nodes))

loop0:

for _, n := range nodes {

for _, d := range []*daemon.Daemon{d1, d2, d3} {

if n.ID == d.NodeID() {

continue loop0

}

}

c.Errorf("unknown nodeID %v", n.ID)

}

}

func (s *DockerSwarmSuite) TestAPISwarmNodeUpdate(c *testing.T) {

ctx := testutil.GetContext(c)

d := s.AddDaemon(ctx, c, true, true)

nodes := d.ListNodes(ctx, c)

d.UpdateNode(ctx, c, nodes[0].ID, func(n *swarm.Node) {

n.Spec.Availability = swarm.NodeAvailabilityPause

})

n := d.GetNode(ctx, c, nodes[0].ID)

assert.Equal(c, n.Spec.Availability, swarm.NodeAvailabilityPause)

}

func (s *DockerSwarmSuite) TestAPISwarmNodeRemove(c *testing.T) {

testRequires(c, Network)

ctx := testutil.GetContext(c)

d1 := s.AddDaemon(ctx, c, true, true)

d2 := s.AddDaemon(ctx, c, true, false)

_ = s.AddDaemon(ctx, c, true, false)

nodes := d1.ListNodes(ctx, c)

assert.Equal(c, len(nodes), 3, fmt.Sprintf("nodes: %#v", nodes))

// Getting the info so we can take the NodeID

d2Info := d2.SwarmInfo(ctx, c)

// forceful removal of d2 should work

d1.RemoveNode(ctx, c, d2Info.NodeID, true)

nodes = d1.ListNodes(ctx, c)

assert.Equal(c, len(nodes), 2, fmt.Sprintf("nodes: %#v", nodes))

// Restart the node that was removed

d2.RestartNode(c)

// Give some time for the node to rejoin

time.Sleep(1 * time.Second)

// Make sure the node didn't rejoin

nodes = d1.ListNodes(ctx, c)

assert.Equal(c, len(nodes), 2, fmt.Sprintf("nodes: %#v", nodes))

}

func (s *DockerSwarmSuite) TestAPISwarmNodeDrainPause(c *testing.T) {

ctx := testutil.GetContext(c)

d1 := s.AddDaemon(ctx, c, true, true)

d2 := s.AddDaemon(ctx, c, true, false)

time.Sleep(1 * time.Second) // make sure all daemons are ready to accept tasks

// start a service, expect balanced distribution

instances := 2

id := d1.CreateService(ctx, c, simpleTestService, setInstances(instances))

poll.WaitOn(c, pollCheck(c, d1.CheckActiveContainerCount(ctx), checker.GreaterThan(0)), poll.WithTimeout(defaultReconciliationTimeout))

poll.WaitOn(c, pollCheck(c, d2.CheckActiveContainerCount(ctx), checker.GreaterThan(0)), poll.WithTimeout(defaultReconciliationTimeout))

poll.WaitOn(c, pollCheck(c, reducedCheck(sumAsIntegers, d1.CheckActiveContainerCount(ctx), d2.CheckActiveContainerCount(ctx)), checker.Equals(instances)), poll.WithTimeout(defaultReconciliationTimeout))

// drain d2, all containers should move to d1

d1.UpdateNode(ctx, c, d2.NodeID(), func(n *swarm.Node) {

n.Spec.Availability = swarm.NodeAvailabilityDrain

})

poll.WaitOn(c, pollCheck(c, d1.CheckActiveContainerCount(ctx), checker.Equals(instances)), poll.WithTimeout(defaultReconciliationTimeout))

poll.WaitOn(c, pollCheck(c, d2.CheckActiveContainerCount(ctx), checker.Equals(0)), poll.WithTimeout(defaultReconciliationTimeout))

// set d2 back to active

d1.UpdateNode(ctx, c, d2.NodeID(), func(n *swarm.Node) {

n.Spec.Availability = swarm.NodeAvailabilityActive

})

instances = 1

d1.UpdateService(ctx, c, d1.GetService(ctx, c, id), setInstances(instances))

poll.WaitOn(c, pollCheck(c, reducedCheck(sumAsIntegers, d1.CheckActiveContainerCount(ctx), d2.CheckActiveContainerCount(ctx)), checker.Equals(instances)), poll.WithTimeout(defaultReconciliationTimeout*2))

instances = 2

d1.UpdateService(ctx, c, d1.GetService(ctx, c, id), setInstances(instances))

// drained node first so we don't get any old containers

poll.WaitOn(c, pollCheck(c, d2.CheckActiveContainerCount(ctx), checker.GreaterThan(0)), poll.WithTimeout(defaultReconciliationTimeout))

poll.WaitOn(c, pollCheck(c, d1.CheckActiveContainerCount(ctx), checker.GreaterThan(0)), poll.WithTimeout(defaultReconciliationTimeout))

poll.WaitOn(c, pollCheck(c, reducedCheck(sumAsIntegers, d1.CheckActiveContainerCount(ctx), d2.CheckActiveContainerCount(ctx)), checker.Equals(instances)), poll.WithTimeout(defaultReconciliationTimeout*2))

d2ContainerCount := len(d2.ActiveContainers(testutil.GetContext(c), c))

// set d2 to paused, scale service up, only d1 gets new tasks

d1.UpdateNode(ctx, c, d2.NodeID(), func(n *swarm.Node) {

n.Spec.Availability = swarm.NodeAvailabilityPause

})

instances = 4

d1.UpdateService(ctx, c, d1.GetService(ctx, c, id), setInstances(instances))

poll.WaitOn(c, pollCheck(c, d1.CheckActiveContainerCount(ctx), checker.Equals(instances-d2ContainerCount)), poll.WithTimeout(defaultReconciliationTimeout))

poll.WaitOn(c, pollCheck(c, d2.CheckActiveContainerCount(ctx), checker.Equals(d2ContainerCount)), poll.WithTimeout(defaultReconciliationTimeout))

}