摘要: 这两天试着重新去理解kubelet的每一个配置，并整理出我们最有可能要配置的项作为我们上生产的要考虑的kubelet最佳配置。
author: garnett.wang@gmail.com
kubernetes version: 1.6.2
Kubelet Configurations We Should Care About
下面是我梳理的，我认为必须关注的flag。
flag value –address 0.0.0.0 –allow-privileged false –cadvisor-port int32 4194 –cgroup-driver string cgroupfs –cluster-dns stringSlice 10.0.0.10 //todo –cluster-domain string caas.vivo.com –cni-bin-dir string /opt/cni/bin –cni-conf-dir string /etc/cni/net.d –docker-endpoint string unix:///var/run/docker.sock –eviction-hard string memory.available<4Gi,<br/> nodefs.available<20Gi,<br/> imagefs.available<5Gi –eviction-max-pod-grace-period int32 30 –eviction-minimum-reclaim string memory.available=500Mi,<br/> nodefs.available=2Gi,,<br/> imagefs.available=2Gi –eviction-pressure-transition-periodduration 5m0s –eviction-soft string memory.available<8Gi,<br/> nodefs.available<100Gi,<br/> imagefs.available<20Gi –eviction-soft-grace-period string memory.available=30s,<br/> nodefs.available=2m,<br/> imagefs.available=2m –experimental-fail-swap-on + –experimental-kernel-memcg-notification + –feature-gates string AllAlpha=false –file-check-frequency duration 20s –hairpin-mode string promiscuous-bridge –healthz-port int32 10248 –image-gc-high-threshold int32 60 –image-gc-low-threshold int32 40 –image-pull-progress-deadline duration 2m0s –kube-api-qps int32 5 –kube-reserved mapStringString cpu=200m,memory=16G –kubeconfig string /var/lib/kubelet/kubeconfig –max-pods int32 50 –minimum-image-ttl-duration duration 1h –network-plugin string cni –pod-infra-container-image string vivo.registry.com/google_containers/pause-amd64:3.0 –pod-manifest-path string /var/lib/kubelet/pod_manifest –port int32 10250 –protect-kernel-defaults + –read-only-port int32 10255 –require-kubeconfig + –root-dir string /var/lib/kubelet –runtime-request-timeout duration 2m0s –serialize-image-pulls false –sync-frequency duration 1m0s –system-reserved mapStringString cpu=100m,memory=32G –volume-plugin-dir string /usr/libexec/kubernetes/kubelet-plugins/volume/exec/ –volume-stats-agg-period duration 1m0s下面是我最终梳理的，认为需要真正显示设置的flag，如下：
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/usr/bin/kubelet —address=0.0.0.0
–port=10250
–allow-privileged=false
–cluster-dns=10.0.0.1
–cluster-domain=caas.vivo.com
–max-pods=50
–network-plugin=cni
–require-kubeconfig
–pod-manifest-path=/etc/kubelet.d/
–pod-infra-container-image=vivo.registry.com/google_containers/pause-amd64:3.0
–eviction-hard=memory.available<4Gi,nodefs.available<20Gi,imagefs.available<5Gi
–eviction-max-pod-grace-period=30
–eviction-minimum-reclaim=memory.available=500Mi,nodefs.available=2Gi,imagefs.available=2Gi
–eviction-pressure-transition-period=5m0s
–eviction-soft=memory.available<8Gi,nodefs.available<100Gi,imagefs.available<20Gi
–eviction-soft-grace-period=memory.available=30s,nodefs.available=2m,imagefs.available=2m
–experimental-kernel-memcg-notification
–experimental-fail-swap-on
–system-reserved=cpu=100m,memory=8G
–kube-reserved=cpu=200m,memory=16G
–hairpin-mode=promiscuous-bridge
–image-gc-high-threshold=60
–image-gc-low-threshold=40
–serialize-image-pulls=false
–protect-kernel-defaults
–feature-gates=AllAlpha=false
感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！
原文链接：https://my.oschina.net/jxcdwangtao/blog/891960
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