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这篇文章跟大家分析一下“如何进行 external-provisioner 组件的启动参数进行分析”。内容详细易懂，对“如何进行 external-provisioner 组件的启动参数进行分析”感兴趣的朋友可以跟着丸趣 TV 小编的思路慢慢深入来阅读一下，希望阅读后能够对大家有所帮助。下面跟着丸趣 TV 小编一起深入学习“如何进行 external-provisioner 组件的启动参数进行分析”的知识吧。
external-provisioner 组件启动参数列表
具体参考 https://github.com/kubernetes-csi/external-provisioner#command-line-options
var (master = flag.String( master , , Master URL to build a client config from. Either this or kubeconfig needs to be set if the provisioner is being run out of cluster.)
kubeconfig = flag.String(kubeconfig , , Absolute path to the kubeconfig file. Either this or master needs to be set if the provisioner is being run out of cluster.)
csiEndpoint = flag.String(csi-address , /run/csi/socket , The gRPC endpoint for Target CSI Volume.)
_ = deprecatedflags.Add(connection-timeout)
volumeNamePrefix = flag.String(volume-name-prefix , pvc , Prefix to apply to the name of a created volume.)
volumeNameUUIDLength = flag.Int(volume-name-uuid-length , -1, Truncates generated UUID of a created volume to this length. Defaults behavior is to NOT truncate.)
showVersion = flag.Bool(version , false, Show version.)
retryIntervalStart = flag.Duration(retry-interval-start , time.Second, Initial retry interval of failed provisioning or deletion. It doubles with each failure, up to retry-interval-max.)
retryIntervalMax = flag.Duration(retry-interval-max , 5*time.Minute, Maximum retry interval of failed provisioning or deletion.)
workerThreads = flag.Uint(worker-threads , 100, Number of provisioner worker threads, in other words nr. of simultaneous CSI calls.)
finalizerThreads = flag.Uint(cloning-protection-threads , 1, Number of simultaniously running threads, handling cloning finalizer removal)
operationTimeout = flag.Duration(timeout , 10*time.Second, Timeout for waiting for creation or deletion of a volume)
_ = deprecatedflags.Add(provisioner)
enableLeaderElection = flag.Bool(enable-leader-election , false, Enables leader election. If leader election is enabled, additional RBAC rules are required. Please refer to the Kubernetes CSI documentation for instructions on setting up these RBAC rules.)
leaderElectionType = flag.String(leader-election-type , endpoints , the type of leader election, options are endpoints (default) or leases (strongly recommended). The endpoints option is deprecated in favor of leases . )
leaderElectionNamespace = flag.String(leader-election-namespace , , Namespace where the leader election resource lives. Defaults to the pod namespace if not set.)
strictTopology = flag.Bool(strict-topology , false, Passes only selected node topology to CreateVolume Request, unlike default behavior of passing aggregated cluster topologies that match with topology keys of the selected node.)
extraCreateMetadata = flag.Bool(extra-create-metadata , false, If set, add pv/pvc metadata to plugin create requests as parameters.)
metricsAddress = flag.String(metrics-address , , The TCP network address where the prometheus metrics endpoint will listen (example: `:8080`). The default is empty string, which means metrics endpoint is disabled. )
metricsPath = flag.String(metrics-path , /metrics , The HTTP path where prometheus metrics will be exposed. Default is `/metrics`.)
featureGates map[string]bool
provisionController *controller.ProvisionController
version = unknown
func main() {
var config *rest.Config
var err error
flag.Var(utilflag.NewMapStringBool( featureGates), feature-gates , A set of key=value pairs that describe feature gates for alpha/experimental features. +
Options are:\n +strings.Join(utilfeature.DefaultFeatureGate.KnownFeatures(), \n ))
klog.InitFlags(nil)
flag.CommandLine.AddGoFlagSet(goflag.CommandLine)
flag.Set(logtostderr , true)
flag.Parse()
......external-provisioner 容器部署的启动参数配置
...
args:
- --csi-address=$(ADDRESS)
- --v=5
- --timeout=150s
- --retry-interval-start=500ms
- --enable-leader-election=true
- --leader-election-type=leases
- --feature-gates=Topology=true
env:
- name: ADDRESS
value: unix:///csi/csi-provisioner.sock
imagePullPolicy: Always
volumeMounts:
- name: socket-dir
mountPath: /csi
volumes： - name: socket-dir
emptyDir: {
medium: Memory
}
...下面是部分参数解析。其他参数请参考：https://github.com/kubernetes-csi/external-provisioner#command-line-options
csi-address
ceph-csi 组件暴露的 grpc 服务 socket 地址，external-provisioner 组件将与该 socket 地址通信，发出创建、删除存储的请求。默认值为 /run/csi/socket。
timeout
创建存储与删除存储请求的超时时间，默认 10 秒。
enable-leader-election
是否开启 leader 选举，配置值为 true 时开启，默认值为 false。
leader-election-type
leader 选举时使用的锁类型，包括两种，默认的 endpoint 与官方推荐的 lease。
leader-election-namespace
leader 选举所使用的锁对象存储在哪个命令空间，默认存储在 external-provisioner pod 所在的命名空间。
extra-create-metadata
设置为 true 后，创建存储时，将额外增加请求参数：pvc 的名称、命名空间、pv 的名称，默认值为 false。
worker-threads
同时执行 CreateVolume/DeleteVolume 操作的 worker 数量，默认值为 100。
retry-interval-start
创建、删除存储失败后的初始重试时间间隔，默认值为 1 秒。每一次失败，重试时间间隔会加倍，直到达到 –retry-interval-max 配置的上限值。
retry-interval-max
创建、删除存储失败后的最大重试时间间隔，默认值为 5 分钟。
volume-name-prefix
创建 pv 时给 pv 名称加的前缀，默认值为 pvc。
feature-gates
特性配置。
配置示例：–feature-gates=Topology=true，存储拓扑相关，具体使用请参考：
https://kubernetes.io/zh/blog/2018/10/11/kubernetes-%E4%B8%AD%E7%9A%84%E6%8B%93%E6%89%91%E6%84%9F%E7%9F%A5%E6%95%B0%E6%8D%AE%E5%8D%B7%E4%BE%9B%E5%BA%94/
https://kubernetes-csi.github.io/docs/topology.html
kube-api-qps 与 kube-api-burst
用于 kube-client 与 kube-apiserver 通信时客户端 kube-client 的限流。
限流实现上是令牌桶算法，kube-api-qps 可以看作是每秒产生令牌的速度，而 kube-api-burst 可以看作是令牌桶的大小，kube-client 发送给 kube-apiserver 的请求需要拿到令牌桶里的令牌后才能发送。
其中 kube-api-qps 默认值为 5，kube-api-burst 默认值为 10。
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