File | Settings | Language & Frameworks | JavaScript | Code Quality Tools | ESLint->Configuration file 选择 .eslintrc 文件
| Preferences | Keymap->搜索“eslint”关键字，找到Fix ESLint Problems，添加快捷键。 |
因为我常用 ctrl+alt+L进行格式化，选了一个旁边的+K，方便一同格式化。
好了，完成。
在前端开发时发现chrome的缓存太严重了。要禁止chrome缓存也很简单：
F12或右键选择检查后打开开发者工具：
选择更多工具（More tools）->网络限制(Network conditions，
在界面中勾选“Disable cache”选项:
可以看到这个namespace下面存在很多个 terminating 的容器。
| 我以第一个 6876d46bcshq6w 容器为例，直接在节点上使用 docker ps | grep 6876d46bcshq6w ，也能看到这个容器已经正常运行了9天： |
查看系统日志中，也可看到kubelet的报错日志：
Apr 28 04:16:50 LinkFinUAT08 kubelet: W0428 04:16:50.745406 69358 prober.go:103] No ref for container "docker://4e4948e24eb7f376e707acea02be456e5d3d1b35c481e918c5d57a19c454f86d" (xxxx-6876d46bcshq6w-xxxxx)
强制删除：
kubectl delete pod <PODNAME> --grace-period=0 --force --namespace <NAMESPACE>
此时在kubernetes 管理界面已经找不到这个容器了。
但，我在节点上仍然能看到这个容器，stop和rm都是不起作用的：
docker stop xxx && docker rm xxx
该容器仍然坚挺地运行着。
（待续
点击搜索，搜“功能”
将出现“Windows功能”对话框。向下滚动并选择Telnet Client:
Telnet客户端安装开始。
完成后，将显示成功消息。
单击关闭。无需重新启动计算机。
Cloc是一款使用Perl语言开发的开源代码统计工具，支持多平台使用、多语言识别，能够计算指定目标文件或文件夹中的文件数（files）、空白行数（blank）、注释行数（comment）和代码行数（code）。
使用 cloc 命令行可以快速统计代码数量。Github仓库: https://github.com/AlDanial/cloc
可以根据操作系统的不同进行安装：
npm install -g cloc # https://www.npmjs.com/package/cloc
sudo apt install cloc # Debian, Ubuntu
sudo yum install cloc # Red Hat, Fedora
sudo dnf install cloc # Fedora 22 or later
sudo pacman -S cloc # Arch
sudo emerge -av dev-util/cloc # Gentoo https://packages.gentoo.org/packages/dev-util/cloc
sudo apk add cloc # Alpine Linux
sudo pkg install cloc # FreeBSD
sudo port install cloc # Mac OS X with MacPorts
brew install cloc # Mac OS X with Homebrew
choco install cloc # Windows with Chocolatey
scoop install cloc # Windows with Scoop
我以 GitHub 上 kubernetes 的代码仓库为例：
$ git clone --depth=1 https://github.com/kubernetes/kubernetes.git
$ cloc kubernetes
显示如下：
它也可以统计压缩包的代码行数：
统计某类型的文件：
这篇文章记录在一个纯净的未安装网络插件的k8s环境里，如何快速安装calico环境。
关于k8s的安装可以参考我这篇文章：《kubernetes 安装入门(centos)》,一路向下操作直到8. 安装flannel网络 前即可。
本文可以参考 calico 官网：«https://docs.projectcalico.org/v3.4/getting-started/kubernetes/installation/calico»
在生产环境中安装etcd，我们一般会使用密钥访问。在这里我这是为了搭建验证环境快速使用，所以相关密钥的地方全部留空。
如果你使用kubeadm安装的集群，可以使用 kubeadm config view 查看集群配置。
我假设容器的service ip 子网为 172.19.0.0/16。在这里需要关注etcd的service的ip，要与子网一致，我设置为 172.19.222.222
运行 kubectl -f etcd.yaml 生效：
# This manifest installs the Calico etcd on the kubeadm master. This uses a DaemonSet
# to force it to run on the master even when the master isn't schedulable, and uses
# nodeSelector to ensure it only runs on the master.
apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
name: calico-etcd
namespace: kube-system
labels:
k8s-app: calico-etcd
spec:
template:
metadata:
labels:
k8s-app: calico-etcd
annotations:
# Mark this pod as a critical add-on; when enabled, the critical add-on scheduler
# reserves resources for critical add-on pods so that they can be rescheduled after
# a failure. This annotation works in tandem with the toleration below.
scheduler.alpha.kubernetes.io/critical-pod: ''
spec:
tolerations:
# This taint is set by all kubelets running `--cloud-provider=external`
# so we should tolerate it to schedule the Calico pods
- key: node.cloudprovider.kubernetes.io/uninitialized
value: "true"
effect: NoSchedule
# Allow this pod to run on the master.
- key: node-role.kubernetes.io/master
effect: NoSchedule
# Allow this pod to be rescheduled while the node is in "critical add-ons only" mode.
# This, along with the annotation above marks this pod as a critical add-on.
- key: CriticalAddonsOnly
operator: Exists
# Only run this pod on the master.
nodeSelector:
node-role.kubernetes.io/master: ""
hostNetwork: true
containers:
- name: calico-etcd
image: quay.io/coreos/etcd:v3.3.9
env:
- name: CALICO_ETCD_IP
valueFrom:
fieldRef:
fieldPath: status.podIP
command:
- /usr/local/bin/etcd
args:
- --name=calico
- --data-dir=/var/etcd/calico-data
- --advertise-client-urls=http://$(CALICO_ETCD_IP):6666
- --listen-client-urls=http://0.0.0.0:6666
- --listen-peer-urls=http://0.0.0.0:6667
- --auto-compaction-retention=1
volumeMounts:
- name: var-etcd
mountPath: /var/etcd
volumes:
- name: var-etcd
hostPath:
path: /var/etcd
---
# This manifest installs the Service which gets traffic to the Calico
# etcd.
apiVersion: v1
kind: Service
metadata:
labels:
k8s-app: calico-etcd
name: calico-etcd
namespace: kube-system
spec:
# Select the calico-etcd pod running on the master.
selector:
k8s-app: calico-etcd
# This ClusterIP needs to be known in advance, since we cannot rely
# on DNS to get access to etcd.
clusterIP: 172.19.222.222
ports:
- port: 6666
以下关注几个配置：
etcd_endpoints ： 将刚才的service的ip写好
cni_network_config： 对cni插件进行配置的。可自定义相关配置，参考链接：https://kubernetes.io/docs/concepts/extend-kubernetes/compute-storage-net/network-plugins/
比如可以添加带宽限制：
{
"type": "bandwidth",
"capabilities": {"bandwidth": true}
}
CALICO_IPV4POOL_CIDR : pod子网设置。
IP_AUTODETECTION_METHOD： 通过是否可达某个IP，确定节点的IP地址。
Enable IPIP ： 一般取消IPIP方式。
name: FELIX_IPINIPENABLED： 一般取消IPIP方式。
运行 kubectl -f calico.yaml 生效：
# Calico Version v3.4.1
# https://docs.projectcalico.org/v3.4/releases#v3.4.1
# This manifest includes the following component versions:
# calico/node:v3.4.1
# calico/cni:v3.4.1
# calico/kube-controllers:v3.4.1
# This ConfigMap is used to configure a self-hosted Calico installation.
kind: ConfigMap
apiVersion: v1
metadata:
name: calico-config
namespace: kube-system
data:
# Configure this with the location of your etcd cluster.
etcd_endpoints: "http://172.19.222.222:6666"
# If you're using TLS enabled etcd uncomment the following.
# You must also populate the Secret below with these files.
etcd_ca: "" # "/calico-secrets/etcd-ca"
etcd_cert: "" # "/calico-secrets/etcd-cert"
etcd_key: "" # "/calico-secrets/etcd-key"
# Configure the Calico backend to use.
calico_backend: "bird"
# Configure the MTU to use
veth_mtu: "1440"
# The CNI network configuration to install on each node. The special
# values in this config will be automatically populated.
cni_network_config: |-
{
"name": "k8s-pod-network",
"cniVersion": "0.3.0",
"plugins": [
{
"type": "calico",
"log_level": "info",
"etcd_endpoints": "__ETCD_ENDPOINTS__",
"etcd_key_file": "__ETCD_KEY_FILE__",
"etcd_cert_file": "__ETCD_CERT_FILE__",
"etcd_ca_cert_file": "__ETCD_CA_CERT_FILE__",
"mtu": __CNI_MTU__,
"ipam": {
"type": "calico-ipam"
},
"policy": {
"type": "k8s"
},
"kubernetes": {
"kubeconfig": "__KUBECONFIG_FILEPATH__"
}
},
{
"type": "portmap",
"snat": false,
"capabilities": {"portMappings": true}
}
]
}
---
# The following contains k8s Secrets for use with a TLS enabled etcd cluster.
# For information on populating Secrets, see http://kubernetes.io/docs/user-guide/secrets/
apiVersion: v1
kind: Secret
type: Opaque
metadata:
name: calico-etcd-secrets
namespace: kube-system
data:
# Populate the following with etcd TLS configuration if desired, but leave blank if
# not using TLS for etcd.
# The keys below should be uncommented and the values populated with the base64
# encoded contents of each file that would be associated with the TLS data.
# Example command for encoding a file contents: cat <file> | base64 -w 0
# etcd-key: null
# etcd-cert: null
# etcd-ca: null
---
# This manifest installs the calico/node container, as well
# as the Calico CNI plugins and network config on
# each master and worker node in a Kubernetes cluster.
kind: DaemonSet
apiVersion: extensions/v1beta1
metadata:
name: calico-node
namespace: kube-system
labels:
k8s-app: calico-node
spec:
selector:
matchLabels:
k8s-app: calico-node
updateStrategy:
type: RollingUpdate
rollingUpdate:
maxUnavailable: 1
template:
metadata:
labels:
k8s-app: calico-node
annotations:
# This, along with the CriticalAddonsOnly toleration below,
# marks the pod as a critical add-on, ensuring it gets
# priority scheduling and that its resources are reserved
# if it ever gets evicted.
scheduler.alpha.kubernetes.io/critical-pod: ''
spec:
nodeSelector:
beta.kubernetes.io/os: linux
hostNetwork: true
tolerations:
# Make sure calico-node gets scheduled on all nodes.
- effect: NoSchedule
operator: Exists
# Mark the pod as a critical add-on for rescheduling.
- key: CriticalAddonsOnly
operator: Exists
- effect: NoExecute
operator: Exists
serviceAccountName: calico-node
# Minimize downtime during a rolling upgrade or deletion; tell Kubernetes to do a "force
# deletion": https://kubernetes.io/docs/concepts/workloads/pods/pod/#termination-of-pods.
terminationGracePeriodSeconds: 0
initContainers:
# This container installs the Calico CNI binaries
# and CNI network config file on each node.
- name: install-cni
image: calico/cni:v3.4.1
command: ["/install-cni.sh"]
env:
# Name of the CNI config file to create.
- name: CNI_CONF_NAME
value: "10-calico.conflist"
# The CNI network config to install on each node.
- name: CNI_NETWORK_CONFIG
valueFrom:
configMapKeyRef:
name: calico-config
key: cni_network_config
# The location of the Calico etcd cluster.
- name: ETCD_ENDPOINTS
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_endpoints
# CNI MTU Config variable
- name: CNI_MTU
valueFrom:
configMapKeyRef:
name: calico-config
key: veth_mtu
# Prevents the container from sleeping forever.
- name: SLEEP
value: "false"
volumeMounts:
- mountPath: /host/opt/cni/bin
name: cni-bin-dir
- mountPath: /host/etc/cni/net.d
name: cni-net-dir
- mountPath: /calico-secrets
name: etcd-certs
containers:
# Runs calico/node container on each Kubernetes node. This
# container programs network policy and routes on each
# host.
- name: calico-node
image: calico/node:v3.4.1
env:
# The location of the Calico etcd cluster.
- name: ETCD_ENDPOINTS
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_endpoints
# Location of the CA certificate for etcd.
- name: ETCD_CA_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_ca
# Location of the client key for etcd.
- name: ETCD_KEY_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_key
# Location of the client certificate for etcd.
- name: ETCD_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_cert
# Set noderef for node controller.
- name: CALICO_K8S_NODE_REF
valueFrom:
fieldRef:
fieldPath: spec.nodeName
# Choose the backend to use.
- name: CALICO_NETWORKING_BACKEND
valueFrom:
configMapKeyRef:
name: calico-config
key: calico_backend
# Cluster type to identify the deployment type
- name: CLUSTER_TYPE
value: "k8s,bgp"
# Auto-detect the BGP IP address.
- name: IP_AUTODETECTION_METHOD
value: can-reach=10.19.0.60
- name: IP
value: "autodetect"
# Enable IPIP
- name: CALICO_IPV4POOL_IPIP
value: "off"
# Enable IPIP
- name: FELIX_IPINIPENABLED
value: "false"
# Set MTU for tunnel device used if ipip is enabled
- name: FELIX_IPINIPMTU
valueFrom:
configMapKeyRef:
name: calico-config
key: veth_mtu
# The default IPv4 pool to create on startup if none exists. Pod IPs will be
# chosen from this range. Changing this value after installation will have
# no effect. This should fall within `--cluster-cidr`.
- name: CALICO_IPV4POOL_CIDR
value: "10.195.0.0/18"
# Disable file logging so `kubectl logs` works.
- name: CALICO_DISABLE_FILE_LOGGING
value: "true"
# Set Felix endpoint to host default action to ACCEPT.
- name: FELIX_DEFAULTENDPOINTTOHOSTACTION
value: "ACCEPT"
# Disable IPv6 on Kubernetes.
- name: FELIX_IPV6SUPPORT
value: "false"
# Set Felix logging to "info"
- name: FELIX_LOGSEVERITYSCREEN
value: "info"
- name: FELIX_HEALTHENABLED
value: "true"
securityContext:
privileged: true
resources:
requests:
cpu: 250m
livenessProbe:
httpGet:
path: /liveness
port: 9099
host: localhost
periodSeconds: 10
initialDelaySeconds: 10
failureThreshold: 6
readinessProbe:
exec:
command:
- /bin/calico-node
- -bird-ready
- -felix-ready
periodSeconds: 10
volumeMounts:
- mountPath: /lib/modules
name: lib-modules
readOnly: true
- mountPath: /run/xtables.lock
name: xtables-lock
readOnly: false
- mountPath: /var/run/calico
name: var-run-calico
readOnly: false
- mountPath: /var/lib/calico
name: var-lib-calico
readOnly: false
- mountPath: /calico-secrets
name: etcd-certs
volumes:
# Used by calico/node.
- name: lib-modules
hostPath:
path: /lib/modules
- name: var-run-calico
hostPath:
path: /var/run/calico
- name: var-lib-calico
hostPath:
path: /var/lib/calico
- name: xtables-lock
hostPath:
path: /run/xtables.lock
type: FileOrCreate
# Used to install CNI.
- name: cni-bin-dir
hostPath:
path: /opt/cni/bin
- name: cni-net-dir
hostPath:
path: /etc/cni/net.d
# Mount in the etcd TLS secrets with mode 400.
# See https://kubernetes.io/docs/concepts/configuration/secret/
- name: etcd-certs
secret:
secretName: calico-etcd-secrets
defaultMode: 0400
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: calico-node
namespace: kube-system
---
# This manifest deploys the Calico Kubernetes controllers.
# See https://github.com/projectcalico/kube-controllers
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: calico-kube-controllers
namespace: kube-system
labels:
k8s-app: calico-kube-controllers
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ''
spec:
# The controllers can only have a single active instance.
replicas: 1
strategy:
type: Recreate
template:
metadata:
name: calico-kube-controllers
namespace: kube-system
labels:
k8s-app: calico-kube-controllers
spec:
nodeSelector:
beta.kubernetes.io/os: linux
# The controllers must run in the host network namespace so that
# it isn't governed by policy that would prevent it from working.
hostNetwork: true
tolerations:
# Mark the pod as a critical add-on for rescheduling.
- key: CriticalAddonsOnly
operator: Exists
- key: node-role.kubernetes.io/master
effect: NoSchedule
serviceAccountName: calico-kube-controllers
containers:
- name: calico-kube-controllers
image: calico/kube-controllers:v3.4.1
env:
# The location of the Calico etcd cluster.
- name: ETCD_ENDPOINTS
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_endpoints
# Location of the CA certificate for etcd.
- name: ETCD_CA_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_ca
# Location of the client key for etcd.
- name: ETCD_KEY_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_key
# Location of the client certificate for etcd.
- name: ETCD_CERT_FILE
valueFrom:
configMapKeyRef:
name: calico-config
key: etcd_cert
# Choose which controllers to run.
- name: ENABLED_CONTROLLERS
value: policy,namespace,serviceaccount,workloadendpoint,node
volumeMounts:
# Mount in the etcd TLS secrets.
- mountPath: /calico-secrets
name: etcd-certs
readinessProbe:
exec:
command:
- /usr/bin/check-status
- -r
volumes:
# Mount in the etcd TLS secrets with mode 400.
# See https://kubernetes.io/docs/concepts/configuration/secret/
- name: etcd-certs
secret:
secretName: calico-etcd-secrets
defaultMode: 0400
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: calico-kube-controllers
namespace: kube-system
---
# Include a clusterrole for the kube-controllers component,
# and bind it to the calico-kube-controllers serviceaccount.
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: calico-kube-controllers
rules:
# Pods are monitored for changing labels.
# The node controller monitors Kubernetes nodes.
# Namespace and serviceaccount labels are used for policy.
- apiGroups:
- ""
resources:
- pods
- nodes
- namespaces
- serviceaccounts
verbs:
- watch
- list
# Watch for changes to Kubernetes NetworkPolicies.
- apiGroups:
- networking.k8s.io
resources:
- networkpolicies
verbs:
- watch
- list
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: calico-kube-controllers
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: calico-kube-controllers
subjects:
- kind: ServiceAccount
name: calico-kube-controllers
namespace: kube-system
---
# Include a clusterrole for the calico-node DaemonSet,
# and bind it to the calico-node serviceaccount.
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: calico-node
rules:
# The CNI plugin needs to get pods, nodes, and namespaces.
- apiGroups: [""]
resources:
- pods
- nodes
- namespaces
verbs:
- get
- apiGroups: [""]
resources:
- endpoints
- services
verbs:
# Used to discover service IPs for advertisement.
- watch
- list
- apiGroups: [""]
resources:
- nodes/status
verbs:
# Needed for clearing NodeNetworkUnavailable flag.
- patch
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
name: calico-node
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: calico-node
subjects:
- kind: ServiceAccount
name: calico-node
namespace: kube-system
推荐几个常用的chrome扩展：
