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fix: recreate container on ulimit changes, add test

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This commit is contained in:
Pasha Sviderski
2026-02-25 16:38:44 +10:00
parent 185cf19a0c
commit 2940965e31
2 changed files with 83 additions and 0 deletions
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pkg/client/deploy/container.go
+4
View File
@@ -90,6 +90,10 @@ func EvalContainerSpecChange(current api.ServiceSpec, new api.ServiceSpec) Conta
if !reflect.DeepEqual(current.Container.Resources.Devices, newResources.Devices) {
return ContainerNeedsRecreate
}
// Ulimits are immutable, so we'll need to recreate if any have changed.
if !reflect.DeepEqual(current.Container.Resources.Ulimits, newResources.Ulimits) {
return ContainerNeedsRecreate
}
// Check if any mutable properties changed.
if !current.Caddy.Equals(new.Caddy) {
pkg/client/deploy/container_test.go
+79
View File
@@ -1864,6 +1864,85 @@ func TestEvalContainerSpecChange_DeviceReservations(t *testing.T) {
}
}
func TestEvalContainerSpecChange_Ulimits(t *testing.T) {
t.Parallel()
tests := []struct {
name string
current api.ContainerResources
new api.ContainerResources
want ContainerSpecStatus
}{
{
name: "empty",
current: api.ContainerResources{},
new: api.ContainerResources{},
want: ContainerUpToDate,
},
{
name: "identical single ulimit",
current: api.ContainerResources{Ulimits: map[string]api.Ulimit{"nofile": {Soft: 20000, Hard: 40000}}},
new: api.ContainerResources{Ulimits: map[string]api.Ulimit{"nofile": {Soft: 20000, Hard: 40000}}},
want: ContainerUpToDate,
},
{
name: "set ulimit",
current: api.ContainerResources{},
new: api.ContainerResources{Ulimits: map[string]api.Ulimit{"nofile": {Soft: 20000, Hard: 40000}}},
want: ContainerNeedsRecreate,
},
{
name: "remove ulimit",
current: api.ContainerResources{Ulimits: map[string]api.Ulimit{"nofile": {Soft: 20000, Hard: 40000}}},
new: api.ContainerResources{},
want: ContainerNeedsRecreate,
},
{
name: "change ulimit soft value",
current: api.ContainerResources{Ulimits: map[string]api.Ulimit{"nofile": {Soft: 20000, Hard: 40000}}},
new: api.ContainerResources{Ulimits: map[string]api.Ulimit{"nofile": {Soft: 30000, Hard: 40000}}},
want: ContainerNeedsRecreate,
},
{
name: "change ulimit hard value",
current: api.ContainerResources{Ulimits: map[string]api.Ulimit{"nofile": {Soft: 20000, Hard: 40000}}},
new: api.ContainerResources{Ulimits: map[string]api.Ulimit{"nofile": {Soft: 20000, Hard: 80000}}},
want: ContainerNeedsRecreate,
},
{
name: "add ulimit",
current: api.ContainerResources{Ulimits: map[string]api.Ulimit{
"nofile": {Soft: 20000, Hard: 40000},
}},
new: api.ContainerResources{Ulimits: map[string]api.Ulimit{
"nofile": {Soft: 20000, Hard: 40000},
"nproc": {Soft: 65535, Hard: 65535},
}},
want: ContainerNeedsRecreate,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
currentSpec := api.ServiceSpec{
Container: api.ContainerSpec{
Image: "nginx:latest",
Resources: tt.current,
},
}
newSpec := api.ServiceSpec{
Container: api.ContainerSpec{
Image: "nginx:latest",
Resources: tt.new,
},
}
result := EvalContainerSpecChange(currentSpec, newSpec)
assert.Equal(t, tt.want, result)
})
}
}
func TestEvalContainerSpecChange_Mixed(t *testing.T) {
t.Parallel()