Kubernetes for People Who Have to Run It
For the engineer who already has this in production and did not choose it. The request path outside in, scheduling and node pools, the address space that runs out while the hardware sits idle, and a control-plane bootstrap worked through its real failure sequence to a conclusion.
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Inleiding
This is the highest level in the Library and it does not open by explaining what a container is for. It assumes you run something. Somebody else built the cluster, or you built it in a hurry two years ago, and you are now the person who gets rung when it stops. If you are still deciding whether to adopt this platform at all, read the fourth module of Securing a Cloud Estate You Didn't Build first — it works through a client who asked for a Kubernetes-scale answer to a spreadsheet-scale problem, and it gives you the words to refuse. That argument is finished and this segment does not reopen it. This one starts one step later. Everything here is taught from something that failed. You will apply an Ingress that is accepted and does nothing, schedule pods that never run, resolve a service name perfectly and connect to nothing, and fill a machine with 32 idle cores and 96 GB of untouched memory until it refuses the next twenty-six pods. That last one is the best technical moment in the source material: a node with headroom for around four hundred pods that can only be given 256 internal addresses per interface, so full-mesh communication caps density long before the processor does. The last module builds a control plane from nothing on a throwaway host. It fails four times first — a leftover file, forwarding disabled, a port already taken, and a bootstrap that hangs for four minutes and then gives up with an error that does not name the cause. The bring-up in the source notes stops at that hang, unfinished. This one finishes it. The thread running through all four modules is a single habit: in this platform a green tick means an object was accepted, and says nothing whatsoever about whether anything acted on it.
Cursusopbouw · 4 modules
lockBeschikbaar met toegang- 01 Wat er eigenlijk draait, van buiten naar binnen3 lessen·1h 51m
Iedereen leert dit platform van binnenuit en moet het dan onder druk om 3 uur 's nachts van buitenuit debuggen. Deze module bouwt de kaart in de richting van waaruit een incident aankomt, en eindigt…
- 02 Waar Dingen Landen, en Waarom3 lessen·1h 56m
Iedereen kan een pod één keer plaatsen. Het werk is het arrangement laten overleven nadat het in contact komt met elf andere engineers die er nog nooit van hebben gehoord, en dat vereist beide…
- 03 Het netwerk en de adresruimte die vol liep3 lessen·2h 41m
Twee labs in deze module produceren een cluster dat gezond is volgens elke meting die je monitoring verzamelt en kunnen geen nieuwe workload starten. De tweede laat helemaal geen sporen achter na een…
- 04 De Bootstrap Die Faalde3 lessen·2h 52m
De meeste mensen die dit lezen zullen nooit een control plane bouwen, en dat is een redelijk besluit in plaats van een tekortkoming. Doe het toch een keer: de opstart is de enige gelegenheid waarin…
Veelgestelde vragen
- Wat leer ik in Kubernetes for People Who Have to Run It?
- For the engineer who already has this in production and did not choose it. The request path outside in, scheduling and node pools, the address space that runs out while the hardware sits idle, and a control-plane bootstrap worked through its real failure sequence to a conclusion.
- Heb ik eerdere ervaring nodig?
- Enige voorkennis wordt aanbevolen voordat je Kubernetes for People Who Have to Run It start.
- Hoeveel tijd kost Kubernetes for People Who Have to Run It?
- Kubernetes for People Who Have to Run It bevat 4 modules en 12 lessen. Je leert in je eigen tempo.
- Hoe krijg ik toegang?
- Kubernetes for People Who Have to Run It is inbegrepen bij elk betaald abonnement.