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Written by: sam

Category: 電腦相關

Published: 13 November 2026

Hits: 18

原先只有三台主機，1主2Worker

手邊正好有機器空了出來，但雙數不能做標準的ETCD會腦裂

只好先再弄一個DB出來，然後將原先的sqlite給匯入，做成雙主

目前都是用WG打通的，所以就不介紹WG

從機器開始來。

要弄到DB就要先裝DOCKER

新機性能好，先裝

sudo apt update && sudo apt install -y curl
curl -fsSL https://get.docker.com | sh
sudo mkdir -p /opt/k3s-postgres/data

Read more: k3s k8s -3 Add new master

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Written by: sam

Category: 電腦相關

Published: 03 September 2026

Hits: 235

來把預設需多次加、解密封包的flannel，更換一下成host-gw
因為我的環境剛好就有WG，所以就沒有使用內建的host-gw, 不然就更加快速和方便

不過最好是開始安怖建環境就先規劃好，而不是像我中途更換，因為會中斷業務

kubectl get nodes -o jsonpath='{range .items[*]}{.metadata.name}{"\n"}{.metadata.annotations}{"\n\n"}{end}' | grep flannel

{"alpha.kubernetes.io/provided-node-ip":"10.99.99.3","flannel.alpha.coreos.com/backend-data":"null","flannel.alpha.coreos.com/backend-type":"host-gw","flannel.alpha.coreos.com/kube-subnet-manager":"true","flannel.alpha.coreos.com/public-ip":"10.99.99.3","k3s.io/hostname":"chunk01","k3s.io/internal-ip":"10.99.99.3","k3s.io/node-args":"[\"server\",\"--token\",\"********\",\"--flannel-backend\",\"host-gw\",\"--flannel-iface\",\"wg0\",\"--node-ip\",\"10.99.99.3\",\"--bind-address\",\"10.99.99.3\",\"--kubelet-arg\",\"allowed-unsafe-sysctls=net.ipv4.ip_forward,net.ipv6.conf.all.forwarding,net.core.somaxconn,net.ipv4.tcp_max_syn_backlog\"]","k3s.io/node-config-hash":"IOSXWZITEQ256E6O2AAIPGV5WYEFL3IEWCNHDPOC1SBYOC5EDV3RA====","k3s.io/node-env":"{}","node.alpha.kubernetes.io/ttl":"0","volumes.kubernetes.io/controller-managed-attach-detach":"true"}

Read more: k3s k8s -3 flannel

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Written by: sam

Category: 電腦相關

Published: 30 August 2026

Hits: 213

這個是非常方便可以HPA自動橫向縮、放的功能

完成圖

 kubectl get hpa -w
NAME                       REFERENCE        TARGETS       MINPODS   MAXPODS   REPLICAS   AGE
keda-hpa-app-keda-scaler   Deployment/app   0/120 (avg)   2         4         2          13m
keda-hpa-app-keda-scaler   Deployment/app   22m/120 (avg)   2         4         2          16m
keda-hpa-app-keda-scaler   Deployment/app   0/120 (avg)     2         4         2          17m
keda-hpa-app-keda-scaler   Deployment/app   22m/120 (avg)   2         4         2          18m
keda-hpa-app-keda-scaler   Deployment/app   0/120 (avg)     2         4         2          19m
keda-hpa-app-keda-scaler   Deployment/app   22m/120 (avg)   2         4         2          19m
keda-hpa-app-keda-scaler   Deployment/app   0/120 (avg)     2         4         2          20m
keda-hpa-app-keda-scaler   Deployment/app   45m/120 (avg)   2         4         2          23m
keda-hpa-app-keda-scaler   Deployment/app   0/120 (avg)     2         4         2          24m
keda-hpa-app-keda-scaler   Deployment/app   22m/120 (avg)   2         4         2          25m
keda-hpa-app-keda-scaler   Deployment/app   67m/120 (avg)   2         4         2          25m

Read more: k3s k8s -2 Keda