Kubernetes-kubelet服务未启动_Kubernetes_Redhat_Kubelet

Kubernetes-kubelet服务未启动

kubernetes

Kubernetes-kubelet服务未启动,kubernetes,redhat,kubelet,Kubernetes,Redhat,Kubelet,我正在尝试在工作节点（第三个工作节点）上启动kubelet服务。。。目前，我不太清楚这里的错误是什么。。但是，我确实看到了F0716 16:42:20.047413 556 server.go:155]未知命令：$KUBELET_EXTRA_ARGS，在sudo systemctl status KUBELET-l给出的输出中： [svc.jenkins@node6 ~]$ sudo systemctl status kubelet -l ● kubelet.service - kubelet:

我正在尝试在工作节点（第三个工作节点）上启动kubelet服务。。。目前，我不太清楚这里的错误是什么。。但是，我确实看到了

F0716 16:42:20.047413 556 server.go:155]未知命令：$KUBELET_EXTRA_ARGS

，在

sudo systemctl status KUBELET-l

给出的输出中：

[svc.jenkins@node6 ~]$ sudo systemctl status kubelet -l
● kubelet.service - kubelet: The Kubernetes Node Agent
   Loaded: loaded (/etc/systemd/system/kubelet.service; enabled; vendor preset: disabled)
  Drop-In: /etc/systemd/system/kubelet.service.d
           └─10-kubeadm.conf
   Active: activating (auto-restart) (Result: exit-code) since Mon 2018-07-16 16:42:20 CDT; 4s ago
     Docs: http://kubernetes.io/docs/
  Process: 556 ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_SYSTEM_PODS_ARGS $KUBELET_NETWORK_ARGS $KUBELET_DNS_ARGS $KUBELET_AUTHZ_ARGS $KUBELET_CADVISOR_ARGS $KUBELET_CGROUP_ARGS $KUBELET_CERTIFICATE_ARGS $KUBELET_EXTRA_ARGS (code=exited, status=255)
 Main PID: 556 (code=exited, status=255)

Jul 16 16:42:20 node6 kubelet[556]: --tls-cert-file string                                                                                      File containing x509 Certificate used for serving HTTPS (with intermediate certs, if any, concatenated after server cert). If --tls-cert-file and --tls-private-key-file are not provided, a self-signed certificate and key are generated for the public address and saved to the directory passed to --cert-dir. (DEPRECATED: This parameter should be set via the config file specified by the Kubelet's --config flag. See https://kubernetes.io/docs/tasks/administer-cluster/kubelet-config-file/ for more information.)
Jul 16 16:42:20 node6 kubelet[556]: --tls-cipher-suites strings                                                                                 Comma-separated list of cipher suites for the server. If omitted, the default Go cipher suites will be used. Possible values: TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_ECDSA_WITH_RC4_128_SHA,TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_RC4_128_SHA,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA256,TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_RC4_128_SHA (DEPRECATED: This parameter should be set via the config file specified by the Kubelet's --config flag. See https://kubernetes.io/docs/tasks/administer-cluster/kubelet-config-file/ for more information.)
Jul 16 16:42:20 node6 kubelet[556]: --tls-min-version string                                                                                    Minimum TLS version supported. Possible values: VersionTLS10, VersionTLS11, VersionTLS12 (DEPRECATED: This parameter should be set via the config file specified by the Kubelet's --config flag. See https://kubernetes.io/docs/tasks/administer-cluster/kubelet-config-file/ for more information.)
Jul 16 16:42:20 node6 kubelet[556]: --tls-private-key-file string                                                                               File containing x509 private key matching --tls-cert-file. (DEPRECATED: This parameter should be set via the config file specified by the Kubelet's --config flag. See https://kubernetes.io/docs/tasks/administer-cluster/kubelet-config-file/ for more information.)
Jul 16 16:42:20 node6 kubelet[556]: -v, --v Level                                                                                                   log level for V logs
Jul 16 16:42:20 node6 kubelet[556]: --version version[=true]                                                                                    Print version information and quit
Jul 16 16:42:20 node6 kubelet[556]: --vmodule moduleSpec                                                                                        comma-separated list of pattern=N settings for file-filtered logging
Jul 16 16:42:20 node6 kubelet[556]: --volume-plugin-dir string                                                                                  The full path of the directory in which to search for additional third party volume plugins (default "/usr/libexec/kubernetes/kubelet-plugins/volume/exec/")
Jul 16 16:42:20 node6 kubelet[556]: --volume-stats-agg-period duration                                                                          Specifies interval for kubelet to calculate and cache the volume disk usage for all pods and volumes.  To disable volume calculations, set to 0. (default 1m0s) (DEPRECATED: This parameter should be set via the config file specified by the Kubelet's --config flag. See https://kubernetes.io/docs/tasks/administer-cluster/kubelet-config-file/ for more information.)
Jul 16 16:42:20 node6 kubelet[556]: F0716 16:42:20.047413     556 server.go:155] unknown command: $KUBELET_EXTRA_ARGS

下面是我的dropin配置，位于

/etc/systemd/system/kubelet.service.d/10 kubeadm.conf

（在其他处于工作状态的节点上也是如此）：

只是需要帮助诊断阻止启动的问题，以便能够解决。。提前感谢：）

编辑：

[svc.jenkins@node6 ~]$ kubelet --version
Kubernetes v1.10.4

目前，在

systemd

中使用了一些不同的方法。所有选项都放在单独的文件中，systemd配置脚本引用该文件

在您的情况下，可能是这样的：

/etc/sysconfig/kubelet
----------------------
KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf
KUBELET_SYSTEM_PODS_ARGS=--pod-manifest-path=/etc/kubernetes/manifests --allow-privileged=true
KUBELET_NETWORK_ARGS=--network-plugin=cni --cni-conf-dir=/etc/cni/net.d --cni-bin-dir=/opt/cni/bin
KUBELET_DNS_ARGS=--cluster-dns=10.96.0.10 --cluster-domain=cluster.local
KUBELET_AUTHZ_ARGS=--authorization-mode=Webhook --client-ca-file=/etc/kubernetes/pki/ca.crt
KUBELET_CADVISOR_ARGS=--cadvisor-port=0
KUBELET_CGROUP_ARGS=--cgroup-driver=cgroupfs
KUBELET_CERTIFICATE_ARGS=--rotate-certificates=true --cert-dir=/data01/kubelet/pki
KUBELET_EXTRA_ARGS=$KUBELET_EXTRA_ARGS --root-dir=/data01/kubelet


/etc/systemd/system/kubelet.service.d/10-kubeadm.conf
-----------------------------------------------------
...
[Service]
EnvironmentFile=/etc/sysconfig/kubelet
ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_SYSTEM_PODS_ARGS $KUBELET_NETWORK_ARGS $KUBELET_DNS_ARGS $KUBELET_AUTHZ_ARGS $KUBELET_CADVISOR_ARGS $KUBELET_CGROUP_ARGS $KUBELET_CERTIFICATE_ARGS $KUBELET_EXTRA_ARGS

systemd配置文件中的变量可能看起来像

${VARIABLE}

或

$VARIABLE

。这两种情况都可以正常工作。

Try with Environment=“KUBELET\u EXTRA\u ARGS=--root dir=/data01/KUBELET”我这次遇到了一个类似的问题，这不是工作节点的问题，但当我尝试启用

KUBELET

服务时，它只会抛出该消息，并且与上面的问题不同，没有显示出现此问题的原因。当我在运行enable命令后检查状态时，它最初显示启动失败，但在几次重试后不再显示。那么，这个解决方案对我也有效吗？试着使用必要的参数手动运行kubelet，并使用其他选项--logtostderr-v5或更多。

/etc/sysconfig/kubelet
----------------------
KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --kubeconfig=/etc/kubernetes/kubelet.conf
KUBELET_SYSTEM_PODS_ARGS=--pod-manifest-path=/etc/kubernetes/manifests --allow-privileged=true
KUBELET_NETWORK_ARGS=--network-plugin=cni --cni-conf-dir=/etc/cni/net.d --cni-bin-dir=/opt/cni/bin
KUBELET_DNS_ARGS=--cluster-dns=10.96.0.10 --cluster-domain=cluster.local
KUBELET_AUTHZ_ARGS=--authorization-mode=Webhook --client-ca-file=/etc/kubernetes/pki/ca.crt
KUBELET_CADVISOR_ARGS=--cadvisor-port=0
KUBELET_CGROUP_ARGS=--cgroup-driver=cgroupfs
KUBELET_CERTIFICATE_ARGS=--rotate-certificates=true --cert-dir=/data01/kubelet/pki
KUBELET_EXTRA_ARGS=$KUBELET_EXTRA_ARGS --root-dir=/data01/kubelet


/etc/systemd/system/kubelet.service.d/10-kubeadm.conf
-----------------------------------------------------
...
[Service]
EnvironmentFile=/etc/sysconfig/kubelet
ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_SYSTEM_PODS_ARGS $KUBELET_NETWORK_ARGS $KUBELET_DNS_ARGS $KUBELET_AUTHZ_ARGS $KUBELET_CADVISOR_ARGS $KUBELET_CGROUP_ARGS $KUBELET_CERTIFICATE_ARGS $KUBELET_EXTRA_ARGS