kubelet怎样配置
小编给大家分享一下kubelet怎样配置,相信大部分人都还不怎么了解,因此分享这篇文章给大家参考一下,希望大家阅读完这篇文章后大有收获,下面让我们一起去了解一下吧!
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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-hardstring | memory.available<4Gi, nodefs.available<20Gi, imagefs.available<5Gi |
--eviction-max-pod-grace-periodint32 | 30 |
--eviction-minimum-reclaimstring | memory.available=500Mi, nodefs.available=2Gi,, imagefs.available=2Gi |
--eviction-pressure-transition-periodduration | 5m0s |
--eviction-soft string | memory.available<8Gi, nodefs.available<100Gi, imagefs.available<20Gi |
--eviction-soft-grace-periodstring | memory.available=30s, nodefs.available=2m, imagefs.available=2m |
--experimental-fail-swap-on | + |
--experimental-kernel-memcg-notification | + |
--feature-gates string | AllAlpha=false |
--file-check-frequencyduration | 20s |
--hairpin-mode string | promiscuous-bridge |
--healthz-port int32 | 10248 |
--image-gc-high-thresholdint32 | 60 |
--image-gc-low-thresholdint32 | 40 |
--image-pull-progress-deadline duration | 2m0s |
--kube-api-qps int32 | 5 |
--kube-reserved mapStringString | cpu=200m,memory=16G |
--kubeconfigstring | /var/lib/kubelet/kubeconfig |
--max-pods int32 | 50 |
--minimum-image-ttl-duration duration | 1h |
--network-pluginstring | cni |
--pod-infra-container-imagestring | vivo.registry.com/google_containers/pause-amd64:3.0 |
--pod-manifest-pathstring | /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 |
Kubelet Configuration Best Practicies
下面是我最终梳理的,认为需要真正显示设置的flag,如下:
/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
注意:要做好资源预留的话,还需要事先创建以下cgroup目录:
/sys/fs/cgroup/cpuset/system.slice/kubelet.service /sys/fs/cgroup/hugebtl/system.slice/kubelet.service
这个工作可以放到kubelet.service的ExecStartPre中做。
而且一定要加上这三个配置项,否则无法生效:
--enforce-node-allocatable=pods,kube-reserved,system-reserved --kube-reserved-cgroup=/system.slice/kubelet.service --system-reserved-cgroup=/system.slice
以上是“kubelet怎样配置”这篇文章的所有内容,感谢各位的阅读!相信大家都有了一定的了解,希望分享的内容对大家有所帮助,如果还想学习更多知识,欢迎关注创新互联行业资讯频道!
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