What do Liveness probes do and how do they differ from readiness and startup probes?
Solved
Kubernetes Question of the day July 18 2022
+22Best answer by JMeixner
Liveness probes check if an application running on a container or pod with several container is alive and is in the desired/functional state. A failing liveness probe could for example trigger an restart of the pod or a single container.
Readyness probes check for the readyness of a container or pod to start receiving data.
Startup probes are defined for the startup process of a container application. It disables liveness and readyness probes until it “sees” that the application is started completely.
VMCA2024, VMCE2023, VMCE2024-SP,CKA, LFCS, PCA,TARS
+17Liveness probes check if an application running on a container or pod with several container is alive and is in the desired/functional state. A failing liveness probe could for example trigger an restart of the pod or a single container.
Readyness probes check for the readyness of a container or pod to start receiving data.
Startup probes are defined for the startup process of a container application. It disables liveness and readyness probes until it “sees” that the application is started completely.
Jochen (Joe) Meixner | Veeam Vanguard 2024 | Veeam Legend 2021 - 2024 | Veeam Certified Architect (VMCA) | Twitter: @JoMeix | BlueSky: @jmeixner.bsky.social
+1Liveness probes is used to check if the container is available and alive.
Readiness probes is used to check if the application is ready to use and serve the traffic.
+11Here is what liveness probe means: It is used to check if the container is available and alive. This is different from both the startup and readiness prob as shown below.
- Startup Probes: Used to check if the application inside the Container has started.
- Readiness Probes: Used to check if the application is ready to use and serve the traffic.
[Microsoft MVP | Veeam Legend (2021 -2025) | VMware vExpert 5x | Cisco Champion 3x | Object First Ace 2x]
1 person likes this
Comment
Rich Text Editor, editor1
Editor toolbars
Press ALT 0 for help
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.