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bgrant0607's profile
Brian Grant
Brian Grant
Brian Grant
@bgrant0607

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Brian Grant

@bgrant0607

Google Cloud. Kubernetes Steering Committee emeritus, K8s SIG Architecture co-Chair emeritus, CNCF TOC member emeritus

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github.com/bgrant0607
Joined June 2014

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    1. Karl "K10g" Isenberg‏ @KarlKFI 5 Nov 2019
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      Why is #kubernetes PodDisruptionBudget a separate object when Rollout Strategy is inlined into Deployment? You need both to be HA.

      2 replies 0 retweets 4 likes
    2. Brian Grant‏ @bgrant0607 15 Nov 2019
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      Replying to @KarlKFI

      We can chat about this sometime. Use cases are different: disrupting yourself vs being disrupted. I would like minReadySeconds to be on Pod, though

      1 reply 1 retweet 0 likes
    3. Karl "K10g" Isenberg‏ @KarlKFI 15 Nov 2019
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      Replying to @bgrant0607

      I get that the consumers are different, but the producer of this info is always the workload operator, IME. So it makes for worse UX having to configure in two places.

      1 reply 0 retweets 0 likes
    4. Brian Grant‏ @bgrant0607 15 Nov 2019
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      Replying to @KarlKFI

      One issue is that, like Service, PDB sometimes/often needs to span multiple controller instances. Also, it wouldn't reduce the object count by much. And there hasn't been much demand. Is it otherwise working well for you?

      1 reply 0 retweets 0 likes
    5. Karl "K10g" Isenberg‏ @KarlKFI 15 Nov 2019
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      Replying to @bgrant0607

      PDB works ok when you define it. There’s just too many things for K8s tenants need to know about to stay highly available. I wrote an internal article, but I should make it a blog. It’s like 10 things to configure.

      2 replies 0 retweets 0 likes
    6. Karl "K10g" Isenberg‏ @KarlKFI 15 Nov 2019
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      Replying to @KarlKFI @bgrant0607

      It would be nice to be able to define a default PDB tho. I’m not exactly sure of the default behavior but I often have new tenants forget PDB and then have outages during the first node pool upgrade.

      1 reply 0 retweets 0 likes
    7. Brian Grant‏ @bgrant0607 15 Nov 2019
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      Replying to @KarlKFI

      I vaguely recall a proposal for that. I'll look/inquire. In the meantime, the main focus is GA/stable: https://github.com/kubernetes/enhancements/blob/6f42c8560c2c36fde3730fcb0d882b2451cdc00d/keps/sig-apps/20190318-PodDisruptionBudget-graduation-to-stable.md …

      1 reply 0 retweets 1 like
      Brian Grant‏ @bgrant0607 15 Nov 2019
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      Replying to @bgrant0607 @KarlKFI

      Comment here:https://github.com/kubernetes/kubernetes/issues/35318 …

      6:50 PM - 15 Nov 2019
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      • Karl "K10g" Isenberg
      1 reply 0 retweets 1 like
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        1. Karl "K10g" Isenberg‏ @KarlKFI 15 Nov 2019
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          Replying to @bgrant0607

          There’s a gotcha there by @davidopp, using principle of least surprise to rationalize not surprising the expert that knows PDBs exist and how they work. Better to avoid surprising the non-expert who doesn’t know Kubernetes well. There are vastly more of them.

          1 reply 0 retweets 0 likes
        2. Karl "K10g" Isenberg‏ @KarlKFI 15 Nov 2019
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          Replying to @KarlKFI @bgrant0607 @davidopp

          Wow that issue is ancient... doesn’t look like it’d be easy to get it moving again without convincing the core dissenters.

          1 reply 0 retweets 0 likes
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