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feat: Add support for start/termination timestamp for init containers #2750

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feat: Add support for start/termination timestamp for init containers #2750

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Add start/termination timestamp support for init containers
onasser1 Aug 27, 2025
2ef062f
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onasser1 Aug 28, 2025
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61 changes: 61 additions & 0 deletions internal/store/pod.go
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Original file line number Diff line number Diff line change
Expand Up @@ -64,7 +64,9 @@ func podMetricFamilies(allowAnnotationsList, allowLabelsList []string) []generat
createPodInitContainerInfoFamilyGenerator(),
createPodInitContainerResourceLimitsFamilyGenerator(),
createPodInitContainerResourceRequestsFamilyGenerator(),
createPodInitContainerStateStartedFamilyGenerator(),
createPodInitContainerStatusLastTerminatedReasonFamilyGenerator(),
createPodInitContainerStatusLastTerminatedTimestampFamilyGenerator(),
createPodInitContainerStatusReadyFamilyGenerator(),
createPodInitContainerStatusRestartsTotalFamilyGenerator(),
createPodInitContainerStatusRunningFamilyGenerator(),
Expand Down Expand Up @@ -859,6 +861,39 @@ func createPodInitContainerResourceRequestsFamilyGenerator() generator.FamilyGen
)
}

func createPodInitContainerStateStartedFamilyGenerator() generator.FamilyGenerator {
return *generator.NewFamilyGeneratorWithStability(
"kube_pod_init_container_state_started",
"Start time in unix timestamp for an init container inside the pod.",
metric.Gauge,
basemetrics.ALPHA,
"",
wrapPodFunc(func(p *v1.Pod) *metric.Family {
ms := []*metric.Metric{}

for _, cs := range p.Status.InitContainerStatuses {
if cs.State.Running != nil {
ms = append(ms, &metric.Metric{
LabelKeys: []string{"container"},
LabelValues: []string{cs.Name},
Value: float64((cs.State.Running.StartedAt).Unix()),
})
} else if cs.State.Terminated != nil {
ms = append(ms, &metric.Metric{
LabelKeys: []string{"container"},
LabelValues: []string{cs.Name},
Value: float64((cs.State.Terminated.StartedAt).Unix()),
})
}
}

return &metric.Family{
Metrics: ms,
}
}),
)
}

func createPodInitContainerStatusLastTerminatedReasonFamilyGenerator() generator.FamilyGenerator {
return *generator.NewFamilyGeneratorWithStability(
"kube_pod_init_container_status_last_terminated_reason",
Expand All @@ -884,6 +919,32 @@ func createPodInitContainerStatusLastTerminatedReasonFamilyGenerator() generator
)
}

func createPodInitContainerStatusLastTerminatedTimestampFamilyGenerator() generator.FamilyGenerator {
return *generator.NewFamilyGeneratorWithStability(
"kube_pod_init_container_status_last_terminated_timestamp",
"Last terminated time for an init container inside a pod in unix timestamp.",
metric.Gauge,
basemetrics.ALPHA,
"",
wrapPodFunc(func(p *v1.Pod) *metric.Family {
ms := make([]*metric.Metric, 0, len(p.Status.InitContainerStatuses))
for _, cs := range p.Status.InitContainerStatuses {
if cs.LastTerminationState.Terminated != nil {
ms = append(ms, &metric.Metric{
LabelKeys: []string{"container"},
LabelValues: []string{cs.Name},
Value: float64(cs.LastTerminationState.Terminated.FinishedAt.Unix()),
})
}
}

return &metric.Family{
Metrics: ms,
}
}),
)
}

func createPodInitContainerStatusReadyFamilyGenerator() generator.FamilyGenerator {
return *generator.NewFamilyGeneratorWithStability(
"kube_pod_init_container_status_ready",
Expand Down
7 changes: 7 additions & 0 deletions internal/store/pod_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -453,6 +453,7 @@ func TestPodStore(t *testing.T) {
# HELP kube_pod_container_status_waiting [STABLE] Describes whether the container is currently in waiting state.
# HELP kube_pod_container_status_waiting_reason [STABLE] Describes the reason the container is currently in waiting state.
# HELP kube_pod_init_container_status_running [STABLE] Describes whether the init container is currently in running state.
# HELP kube_pod_init_container_state_started [STABLE] Start time in unix timestamp for an_init_pod container.
# HELP kube_pod_init_container_status_terminated [STABLE] Describes whether the init container is currently in terminated state.
# HELP kube_pod_init_container_status_terminated_reason Describes the reason the init container is currently in terminated state.
# HELP kube_pod_init_container_status_waiting [STABLE] Describes whether the init container is currently in waiting state.
Expand All @@ -464,6 +465,7 @@ func TestPodStore(t *testing.T) {
# TYPE kube_pod_container_status_waiting gauge
# TYPE kube_pod_container_status_waiting_reason gauge
# TYPE kube_pod_init_container_status_running gauge
# TYPE kube_pod_init_container_state_started gauge
# TYPE kube_pod_init_container_status_terminated gauge
# TYPE kube_pod_init_container_status_terminated_reason gauge
# TYPE kube_pod_init_container_status_waiting gauge
Expand All @@ -473,6 +475,7 @@ func TestPodStore(t *testing.T) {
kube_pod_container_status_terminated{container="container1",namespace="ns1",pod="pod1",uid="uid1"} 0
kube_pod_container_status_waiting{container="container1",namespace="ns1",pod="pod1",uid="uid1"} 0
kube_pod_init_container_status_running{container="initcontainer1",namespace="ns1",pod="pod1",uid="uid1"} 1
kube_pod_init_container_state_started{container="initcontainer1",namespace="ns1",pod="pod1",uid="uid1"} -6.21355968e+10
kube_pod_init_container_status_terminated{container="initcontainer1",namespace="ns1",pod="pod1",uid="uid1"} 0
kube_pod_init_container_status_waiting{container="initcontainer1",namespace="ns1",pod="pod1",uid="uid1"} 0
`,
Expand All @@ -483,6 +486,7 @@ func TestPodStore(t *testing.T) {
"kube_pod_container_status_terminated",
"kube_pod_container_status_terminated_reason",
"kube_pod_init_container_status_running",
"kube_pod_init_container_state_started",
"kube_pod_init_container_status_waiting",
"kube_pod_init_container_status_waiting_reason",
"kube_pod_init_container_status_terminated",
Expand Down Expand Up @@ -1766,11 +1770,13 @@ func TestPodStore(t *testing.T) {
# HELP kube_pod_init_container_resource_limits The number of requested limit resource by an init container.
# HELP kube_pod_init_container_resource_requests The number of requested request resource by an init container.
# HELP kube_pod_init_container_status_last_terminated_reason Describes the last reason the init container was in terminated state.
# HELP kube_pod_init_container_status_last_terminated_timestamp Last terminated time for a pod init container in unix timestamp.
# TYPE kube_pod_container_resource_limits gauge
# TYPE kube_pod_container_resource_requests gauge
# TYPE kube_pod_init_container_resource_limits gauge
# TYPE kube_pod_init_container_resource_requests gauge
# TYPE kube_pod_init_container_status_last_terminated_reason gauge
# TYPE kube_pod_init_container_status_last_terminated_timestamp gauge
kube_pod_container_resource_limits{container="pod1_con1",namespace="ns1",node="",pod="pod1",resource="cpu",unit="core",uid="uid1"} 0.2
kube_pod_container_resource_limits{container="pod1_con1",namespace="ns1",node="",pod="pod1",resource="ephemeral_storage",unit="byte",uid="uid1"} 3e+08
kube_pod_container_resource_limits{container="pod1_con1",namespace="ns1",node="",pod="pod1",resource="memory",unit="byte",uid="uid1"} 1e+08
Expand Down Expand Up @@ -1802,6 +1808,7 @@ func TestPodStore(t *testing.T) {
"kube_pod_init_container_resource_limits",
"kube_pod_init_container_resource_requests",
"kube_pod_init_container_status_last_terminated_reason",
"kube_pod_init_container_status_last_terminated_timestamp",
},
},
{
Expand Down
4 changes: 4 additions & 0 deletions pkg/app/server_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -229,7 +229,9 @@ func TestFullScrapeCycle(t *testing.T) {
# HELP kube_pod_init_container_info [STABLE] Information about an init container in a pod.
# HELP kube_pod_init_container_resource_limits The number of requested limit resource by an init container.
# HELP kube_pod_init_container_resource_requests The number of requested request resource by an init container.
# HELP kube_pod_init_container_state_started [STABLE] Start time in unix timestamp for an_init_pod container.
# HELP kube_pod_init_container_status_last_terminated_reason Describes the last reason the init container was in terminated state.
# HELP kube_pod_init_container_status_last_terminated_timestamp Last terminated time for a pod init container in unix timestamp.
# HELP kube_pod_init_container_status_ready [STABLE] Describes whether the init containers readiness check succeeded.
# HELP kube_pod_init_container_status_restarts_total [STABLE] The number of restarts for the init container.
# HELP kube_pod_init_container_status_running [STABLE] Describes whether the init container is currently in running state.
Expand Down Expand Up @@ -283,7 +285,9 @@ func TestFullScrapeCycle(t *testing.T) {
# TYPE kube_pod_init_container_info gauge
# TYPE kube_pod_init_container_resource_limits gauge
# TYPE kube_pod_init_container_resource_requests gauge
# TYPE kube_pod_init_container_state_started gauge
# TYPE kube_pod_init_container_status_last_terminated_reason gauge
# TYPE kube_pod_init_container_status_last_terminated_timestamp gauge
# TYPE kube_pod_init_container_status_ready gauge
# TYPE kube_pod_init_container_status_restarts_total counter
# TYPE kube_pod_init_container_status_running gauge
Expand Down
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