我有多个Node.js应用程序/服务在Google Kubernetes Engine(GKE(上运行，实际上有8个pod在运行。我在创建pod时没有设置资源限制，所以现在我遇到了CPU非计划错误。
我知道我必须设置资源限制。据我所知，1 CPU/节点=1000Mi？我的问题是，
1( 我应该设置的理想资源限制是多少？喜欢最低限度吗？对于一个很少使用的Pod，我可以设置20Mi吗？还是50Mi？
2( 在一个Kubernetes节点上运行多少个Pod是理想的？现在我已经设置了2个节点，我想将其减少到1。
3( 人们在生产中使用什么？以及发展集群？
这是我的节点
节点1:
Namespace Name CPU Requests CPU Limits Memory Requests Memory Limits
--------- ---- ------------ ---------- --------------- -------------
default express-gateway-58dff8647-f2kft 100m (10%) 0 (0%) 0 (0%) 0 (0%)
default openidconnect-57c48dc448-9jmbn 100m (10%) 0 (0%) 0 (0%) 0 (0%)
default web-78d87bdb6b-4ldsv 100m (10%) 0 (0%) 0 (0%) 0 (0%)
kube-system event-exporter-v0.1.9-5c8fb98cdb-tcd68 0 (0%) 0 (0%) 0 (0%) 0 (0%)
kube-system fluentd-gcp-v2.0.17-mhpgb 100m (10%) 0 (0%) 200Mi (7%) 300Mi (11%)
kube-system kube-dns-5df78f75cd-6hdfv 260m (27%) 0 (0%) 110Mi (4%) 170Mi (6%)
kube-system kube-dns-autoscaler-69c5cbdcdd-2v2dj 20m (2%) 0 (0%) 10Mi (0%) 0 (0%)
kube-system kube-proxy-gke-qp-cluster-default-pool-7b00cb40-6z79 100m (10%) 0 (0%) 0 (0%) 0 (0%)
kube-system kubernetes-dashboard-7b89cff8-9xnsm 50m (5%) 100m (10%) 100Mi (3%) 300Mi (11%)
kube-system l7-default-backend-57856c5f55-k9wgh 10m (1%) 10m (1%) 20Mi (0%) 20Mi (0%)
kube-system metrics-server-v0.2.1-7f8dd98c8f-5z5zd 53m (5%) 148m (15%) 154Mi (5%) 404Mi (15%)
Allocated resources:
(Total limits may be over 100 percent, i.e., overcommitted.)
CPU Requests CPU Limits Memory Requests Memory Limits
------------ ---------- --------------- -------------
893m (95%) 258m (27%) 594Mi (22%) 1194Mi (45%)
节点2:
Namespace Name CPU Requests CPU Limits Memory Requests Memory Limits
--------- ---- ------------ ---------- --------------- -------------
default kube-healthcheck-55bf58578d-p2tn6 100m (10%) 0 (0%) 0 (0%) 0 (0%)
default pubsub-function-675585cfbf-2qgmh 100m (10%) 0 (0%) 0 (0%) 0 (0%)
default servicing-84787cfc75-kdbzf 100m (10%) 0 (0%) 0 (0%) 0 (0%)
kube-system fluentd-gcp-v2.0.17-ptnlg 100m (10%) 0 (0%) 200Mi (7%) 300Mi (11%)
kube-system heapster-v1.5.2-7dbb64c4f9-bpc48 138m (14%) 138m (14%) 301656Ki (11%) 301656Ki (11%)
kube-system kube-dns-5df78f75cd-89c5b 260m (27%) 0 (0%) 110Mi (4%) 170Mi (6%)
kube-system kube-proxy-gke-qp-cluster-default-pool-7b00cb40-9n92 100m (10%) 0 (0%) 0 (0%) 0 (0%)
Allocated resources:
(Total limits may be over 100 percent, i.e., overcommitted.)
CPU Requests CPU Limits Memory Requests Memory Limits
------------ ---------- --------------- -------------
898m (95%) 138m (14%) 619096Ki (22%) 782936Ki (28%)
我的计划是将所有这些移动到1个节点中。
根据kubernetes官方文档
1( 你可以在内存和CPU方面降低，但你需要给pod足够的CPU和内存才能正常工作。我的CPU 100和内存200都很低(这在很大程度上取决于你运行的应用程序以及副本的数量(
2(There should not be 100 pods per node(这是极端情况(
3( 生产集群在任何情况下都不是单个节点。这是一本关于生产中的kubernetes的非常好的读物
但请记住，如果增加单个节点上pod的数量，则可能需要增加节点的大小(in terms of resources(。
内存和CPU使用率往往与集群上的大小/负载成比例增长
这是说明要求的官方文件
https://kubernetes.io/docs/setup/cluster-large/