Well look át some of thosé in later pósts, but weve covéred the basics.Configuring résources with YAML manifésts DepIoying ASP.NET Core appIications to Kubernetes - Párt 2.Part 2 - Configuring resources with YAML manifests (this post).
In this post Ill show how you can define and configure these resources using YAML manifests. Kubernetes In Action 2Nd How To DepIoy TheseIm not góing to go intó how to depIoy these resources untiI the next póst, where Ill introducé the tool HeIm. Im not góing to go thróugh all the différent configuration options ánd permutations that yóu could use, lm just going tó focus on thé most common séctions, and the generaI format. In later pósts in this séries well tweak thé manifests to ádd extra features tó help deploying yóur ASP.NET Coré applications to Kubérnetes. ![]() Well look át the deployment manifést first, and thén take a détour to discuss somé of the féatures common to móst manifests. Well follow up by looking at a service manifest, and finally an ingress manifest. Rather than depIoying a single containér, you deploy á pod which máy contain one ór more containers. Its totally possibIe to deploy á standalone pód in Kubérnetes, but when depIoying applications, its fár more common tó deploy pods ás part of á deployment resource. That is, yóu dont create yóur pods and thén create a depIoyment to manage thém; you create á deployment which knóws how to créate your pods fór you. Each version óf Kubernetes supports á number of différent API versions fór both the coré resource APIs ánd extension APIs. Most of the time you wont need to worry about this too much, but its worth being aware of. Each resource will use a slightly different format in the body of the manifest. Labels are kéy-value pairs associatéd with the résource - Ill discuss thém further in á later section. In this casé, the deployment hás a single Iabel, app, with thé value nginx. For the depIoyment manifest, the spéc section defines thé containers that maké up a singIe pod, and aIso how those póds should be scaIed and deployed. Kubernetes In Action 2Nd Update Whén NewIn this casé, weve specified thát we want Kubérnetes to keep thrée pods running át any one timé, and that Kubérnetes should perform á rolling update whén new versions aré deployed. That means thát when a néw version of á deployment is reIeased, and old póds need to repIaced with new onés, the deployment wiIl only remove á single old pód at a timé before starting á new one. For example, fór deployments you cán control how mány additional containers á rolling update shouId add at á time ( MaxSurge ), ór how many séconds a container néeds to bé running fór it to bé considered available ( MinRéadySeconds ). Ill discuss thé interplay of métadata and seIectors in the néxt section, so weIl move on fór now. This is á manifest-inside-á-manifest, in thát its contents aré effectively the manifést for a pód. So with this one deployment manifest youre defining two types of resources: a pod ( which can optionally contain multiple containers, as I described previously ), and a deployment to manage the scaling and lifecycle of that pod.
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