OpenShift Advent Calendar 2025

16 participant

25 followers

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Category：DevOps & Infrastructure & SRE

Creator：

@orimanabu

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OpenShift関連のアドベントカレンダーです。OpenShiftにかすっていればどんなネタでも大丈夫です(というかかすってなくても大丈夫です)。どなたでも参加できます。

OpenShift Virtualizationについてもアドベントカレンダーやってます！ https://qiita.com/advent-calendar/2025/openshift-virt

How to join the calendar

You can join the calendar by selecting an available date and registering the URL of the article you wish to link to. If a slot is available, you can go back to a past date to join!

Series 1

Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
30	@orimanabu MetalLBで外部からのBGPの経路をインポートする Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@jishii-rh 全部手作業でMachineConfigOperatorの代わりにノードの設定変更をしてみよう Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@tawatana オンプレOpenShiftのインストール練習を爆速で回す！環境構築・破棄ツール ocp_create_vm の紹介 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@ArakiToshihiro [編集中：もう少し時間をください><]OpenShift 4.20 Anyplatform Install を試す！ Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@orimanabu OVN-Kubernetesに今後やってくる(かもしれない)機能について Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@mosuke5 OpenShift LightspeedにMCPサーバーを追加して、AIエージェント機能を強化する Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use
@hiroyuki-kaneko Kubernetes/OpenShiftの権限管理・ガバナンス初心者向けガイド：RBAC, VAP, Gatekeeperの使い分けと実機検証 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@tawatana Assisted installerについて Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@tawatana Agent-based installerについて Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@tawatana Agent-based installer + oc-mirror v2 での構築 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@JPishikawa AI関連の何かを書きます Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@masaki-oomura 【巷のウワサ大検証！】OpenShift Lightspeedって実際どうなの会 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@akhino5151 OTELかMicroShiftかROSAの何か Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use
@hashnao 何か書きます Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@yuokada 何かを書きます Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@ArakiToshihiro AIとペアプロしたアプリをOpenShiftで運用してみる話 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@hiroyuki-kaneko 人工知能使う何か Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@mshida Harborなどレジストリ関連 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@mshida oc mirror v2ユースケース Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@ArakiToshihiro OpenShift Monitoring 再入門 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use
@slmjx 何か書きます Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@tawatana お家k8sでrhel9+microshiftで遊ぶ Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@sota_yamaguchi RHACS Policy as Codeについて Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@k-srkw なにかかく Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@spchildren ワシが2025年を締めようじゃないか Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	26	27

@orimanabu
MetalLBで外部からのBGPの経路をインポートする
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Title
URL
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About reserved posting
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@jishii-rh
全部手作業でMachineConfigOperatorの代わりにノードの設定変更をしてみよう
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@tawatana
オンプレOpenShiftのインストール練習を爆速で回す！環境構築・破棄ツール ocp_create_vm の紹介
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@ArakiToshihiro
[編集中：もう少し時間をください><]OpenShift 4.20 Anyplatform Install を試す！
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@orimanabu
OVN-Kubernetesに今後やってくる(かもしれない)機能について
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@mosuke5
OpenShift LightspeedにMCPサーバーを追加して、AIエージェント機能を強化する
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@hiroyuki-kaneko
Kubernetes/OpenShiftの権限管理・ガバナンス初心者向けガイド：RBAC, VAP, Gatekeeperの使い分けと実機検証
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@tawatana
Assisted installerについて
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@tawatana
Agent-based installerについて
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@tawatana
Agent-based installer + oc-mirror v2 での構築
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@JPishikawa
AI関連の何かを書きます
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@masaki-oomura
【巷のウワサ大検証！】OpenShift Lightspeedって実際どうなの会
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@akhino5151
OTELかMicroShiftかROSAの何か
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@hashnao
何か書きます
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@yuokada
何かを書きます
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@ArakiToshihiro
AIとペアプロしたアプリをOpenShiftで運用してみる話
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@hiroyuki-kaneko
人工知能使う何か
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@mshida
Harborなどレジストリ関連
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@mshida
oc mirror v2ユースケース
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@ArakiToshihiro
OpenShift Monitoring 再入門
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@slmjx
何か書きます
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@tawatana
お家k8sでrhel9+microshiftで遊ぶ
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@sota_yamaguchi
RHACS Policy as Codeについて
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@k-srkw
なにかかく
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@spchildren
ワシが2025年を締めようじゃないか
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Sunday	Monday	Tuesday	Wednesday	Thursday	Friday	Saturday
30	@orimanabu MetalLBで外部からのBGPの経路をインポートする Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@jishii-rh 全部手作業でMachineConfigOperatorの代わりにノードの設定変更をしてみよう Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@tawatana オンプレOpenShiftのインストール練習を爆速で回す！環境構築・破棄ツール ocp_create_vm の紹介 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@ArakiToshihiro [編集中：もう少し時間をください><]OpenShift 4.20 Anyplatform Install を試す！ Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@orimanabu OVN-Kubernetesに今後やってくる(かもしれない)機能について Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@mosuke5 OpenShift LightspeedにMCPサーバーを追加して、AIエージェント機能を強化する Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use
@hiroyuki-kaneko Kubernetes/OpenShiftの権限管理・ガバナンス初心者向けガイド：RBAC, VAP, Gatekeeperの使い分けと実機検証 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@tawatana Assisted installerについて Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@tawatana Agent-based installerについて Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@tawatana Agent-based installer + oc-mirror v2 での構築 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@JPishikawa AI関連の何かを書きます Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@masaki-oomura 【巷のウワサ大検証！】OpenShift Lightspeedって実際どうなの会 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@akhino5151 OTELかMicroShiftかROSAの何か Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use
@hashnao 何か書きます Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@yuokada 何かを書きます Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@ArakiToshihiro AIとペアプロしたアプリをOpenShiftで運用してみる話 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@hiroyuki-kaneko 人工知能使う何か Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@mshida Harborなどレジストリ関連 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@mshida oc mirror v2ユースケース Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@ArakiToshihiro OpenShift Monitoring 再入門 Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use
@slmjx 何か書きます Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@tawatana お家k8sでrhel9+microshiftで遊ぶ Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@sota_yamaguchi RHACS Policy as Codeについて Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@k-srkw なにかかく Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	@spchildren ワシが2025年を締めようじゃないか Overwrite Title URL You can post either your article on Qiita or your blog post. About reserved posting If you register a secret article by the day before the same day, it will be automatically published around 7:00 on the same day. About posting period Only articles submitted after October 31, 2025 can be registered. (Secret articles can be registered anytime articles are posted.) When you participate, we will assume that you have agreed to the terms of use	26	27

@orimanabu
MetalLBで外部からのBGPの経路をインポートする
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@jishii-rh
全部手作業でMachineConfigOperatorの代わりにノードの設定変更をしてみよう
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@tawatana
オンプレOpenShiftのインストール練習を爆速で回す！環境構築・破棄ツール ocp_create_vm の紹介
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@ArakiToshihiro
[編集中：もう少し時間をください><]OpenShift 4.20 Anyplatform Install を試す！
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@orimanabu
OVN-Kubernetesに今後やってくる(かもしれない)機能について
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@mosuke5
OpenShift LightspeedにMCPサーバーを追加して、AIエージェント機能を強化する
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@hiroyuki-kaneko
Kubernetes/OpenShiftの権限管理・ガバナンス初心者向けガイド：RBAC, VAP, Gatekeeperの使い分けと実機検証
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@tawatana
Assisted installerについて
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@tawatana
Agent-based installerについて
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@tawatana
Agent-based installer + oc-mirror v2 での構築
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@JPishikawa
AI関連の何かを書きます
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@masaki-oomura
【巷のウワサ大検証！】OpenShift Lightspeedって実際どうなの会
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@akhino5151
OTELかMicroShiftかROSAの何か
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@hashnao
何か書きます
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@yuokada
何かを書きます
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@ArakiToshihiro
AIとペアプロしたアプリをOpenShiftで運用してみる話
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@hiroyuki-kaneko
人工知能使う何か
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@mshida
Harborなどレジストリ関連
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@mshida
oc mirror v2ユースケース
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@ArakiToshihiro
OpenShift Monitoring 再入門
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@slmjx
何か書きます
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@tawatana
お家k8sでrhel9+microshiftで遊ぶ
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@sota_yamaguchi
RHACS Policy as Codeについて
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@k-srkw
なにかかく
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@spchildren
ワシが2025年を締めようじゃないか
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OpenShift Advent Calendar 2025

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