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nit edits for Sidecar containers 

Signed-off-by: Matthias Bertschy <matthias.bertschy@gmail.com>
pull/42447/head
Matthias Bertschy 2023-08-08 11:53:36 +02:00
parent a0abc5b5c4
commit de8c969241
2 changed files with 9 additions and 6 deletions
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5
content/en/docs/concepts/workloads/pods/_index.md
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@ -118,8 +118,9 @@ By default, init containers run and complete before the app containers are start
{{< feature-state for_k8s_version="v1.28" state="alpha" >}} {{< feature-state for_k8s_version="v1.28" state="alpha" >}}
Enabling the [SidecarContainers feature gate](/docs/reference/command-line-tools-reference/feature-gates/) Enabling the `SidecarContainers` [feature gate](/docs/reference/command-line-tools-reference/feature-gates/)
allows specifying a <code>restartPolicy=Always</code> to init containers, making sure they are allows you to specify `restartPolicy: Always` for init containers.
Setting the `Always` restart policy ensures that the init containers where you set it are
kept running during the entire lifetime of the Pod. kept running during the entire lifetime of the Pod.
See [Sidecar containers and restartPolicy](/docs/concepts/workloads/pods/init-containers/#sidecar-containers-and-restartpolicy) See [Sidecar containers and restartPolicy](/docs/concepts/workloads/pods/init-containers/#sidecar-containers-and-restartpolicy)
for more details. for more details.

10
content/en/docs/concepts/workloads/pods/init-containers.md
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@ -294,7 +294,7 @@ validation error is thrown for any container sharing a name with another.
{{< feature-state for_k8s_version="v1.28" state="alpha" >}} {{< feature-state for_k8s_version="v1.28" state="alpha" >}}
Starting with Kubernetes 1.28 in alpha, a feature gate named `SidecarContainers` Starting with Kubernetes 1.28 in alpha, a feature gate named `SidecarContainers`
allows to specify a `restartPolicy` for init containers which is independent of allows you to specify a `restartPolicy` for init containers which is independent of
the Pod and other init containers. Container [probes](/docs/concepts/workloads/pods/pod-lifecycle/#types-of-probe) the Pod and other init containers. Container [probes](/docs/concepts/workloads/pods/pod-lifecycle/#types-of-probe)
can also be added to control their lifecycle. can also be added to control their lifecycle.
@ -309,9 +309,11 @@ Since these containers are defined as init containers, they benefit from the sam
ordering and sequential guarantees as other init containers, allowing them to ordering and sequential guarantees as other init containers, allowing them to
be mixed with other init containers into complex Pod initialization flows. be mixed with other init containers into complex Pod initialization flows.
The only difference is that they are not required to complete before the next Compared to regular init containers, sidecar-style init containers continue to
init container starts, so a next init container will start after the current run and the next init container can begin starting once the kubelet has set
container status has been set to `Pod.status.containerStatuses[id of container].started=true` the `started` container status for the sidecar-style init container to true.
That status either becomes true because there is a process running in the
container and no startup probe defined, or
as a result of its `startupProbe` succeeding. as a result of its `startupProbe` succeeding.
This feature can be used to implement the sidecar container pattern in a more This feature can be used to implement the sidecar container pattern in a more