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Make timeouts in the Kubelet slightly offset to aid debugging

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Several of these loops overlap, and when they are the reason a failure
is happening it is difficult to sort them out. Slighly misalign these
loops to make their impact obvious.
This commit is contained in:
Clayton Coleman
2017-04-28 11:57:19 -04:00
parent 94567f64e1
commit 49209b3394
5 changed files with 15 additions and 5 deletions
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4
pkg/kubelet/dockertools/kube_docker_client.go
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@@ -70,7 +70,9 @@ var _ DockerInterface = &kubeDockerClient{}
// kubeDockerClient only applies timeout on non-long running operations. // kubeDockerClient only applies timeout on non-long running operations.
const ( const (
// defaultTimeout is the default timeout of short running docker operations. // defaultTimeout is the default timeout of short running docker operations.
defaultTimeout = 2 * time.Minute // Value is slightly offset from 2 minutes to make timeouts due to this
// constant recognizable.
defaultTimeout = 2*time.Minute - 1*time.Second
// defaultShmSize is the default ShmSize to use (in bytes) if not specified. // defaultShmSize is the default ShmSize to use (in bytes) if not specified.
defaultShmSize = int64(1024 * 1024 * 64) defaultShmSize = int64(1024 * 1024 * 64)

4
pkg/kubelet/rkt/rkt.go
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@@ -135,7 +135,9 @@ const (
defaultNetworkName = "rkt.kubernetes.io" defaultNetworkName = "rkt.kubernetes.io"
// defaultRequestTimeout is the default timeout of rkt requests. // defaultRequestTimeout is the default timeout of rkt requests.
defaultRequestTimeout = 2 * time.Minute // Value is slightly offset from 2 minutes to make timeouts due to this
// constant recognizable.
defaultRequestTimeout = 2*time.Minute - 1*time.Second
etcHostsPath = "/etc/hosts" etcHostsPath = "/etc/hosts"
etcResolvConfPath = "/etc/resolv.conf" etcResolvConfPath = "/etc/resolv.conf"

4
pkg/kubelet/volumemanager/volume_manager.go
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@@ -71,7 +71,9 @@ const (
// will retry in the next sync iteration. This frees the associated // will retry in the next sync iteration. This frees the associated
// goroutine of the pod to process newer updates if needed (e.g., a delete // goroutine of the pod to process newer updates if needed (e.g., a delete
// request to the pod). // request to the pod).
podAttachAndMountTimeout time.Duration = 2 * time.Minute // Value is slightly offset from 2 minutes to make timeouts due to this
// constant recognizable.
podAttachAndMountTimeout time.Duration = 2*time.Minute + 3*time.Second
// podAttachAndMountRetryInterval is the amount of time the GetVolumesForPod // podAttachAndMountRetryInterval is the amount of time the GetVolumesForPod
// call waits before retrying // call waits before retrying

4
pkg/util/goroutinemap/exponentialbackoff/exponential_backoff.go
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@@ -32,7 +32,9 @@ const (
// maxDurationBeforeRetry is the maximum amount of time that // maxDurationBeforeRetry is the maximum amount of time that
// durationBeforeRetry will grow to due to exponential backoff. // durationBeforeRetry will grow to due to exponential backoff.
maxDurationBeforeRetry time.Duration = 2 * time.Minute // Value is slightly offset from 2 minutes to make timeouts due to this
// constant recognizable.
maxDurationBeforeRetry time.Duration = 2*time.Minute + 2*time.Second
) )
// ExponentialBackoff contains the last occurrence of an error and the duration // ExponentialBackoff contains the last occurrence of an error and the duration

4
pkg/util/goroutinemap/goroutinemap.go
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@@ -40,7 +40,9 @@ const (
// maxDurationBeforeRetry is the maximum amount of time that // maxDurationBeforeRetry is the maximum amount of time that
// durationBeforeRetry will grow to due to exponential backoff. // durationBeforeRetry will grow to due to exponential backoff.
maxDurationBeforeRetry = 2 * time.Minute // Value is slightly offset from 2 minutes to make timeouts due to this
// constant recognizable.
maxDurationBeforeRetry = 2*time.Minute + 1*time.Second
) )
// GoRoutineMap defines a type that can run named goroutines and track their // GoRoutineMap defines a type that can run named goroutines and track their