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etcd v3 api browser especially for learning kubernetes

License: Apache License 2.0

Go 71.93% CSS 3.84% JavaScript 15.98% Shell 1.50% Dockerfile 2.41% Makefile 4.34%

lucas's Introduction

lucas

etcd v3 key value browser

What is lucas

lucas is etcd v3 api browser,You can use lucas to operate kubernetes service discovery conveniently.

Usage

NAME:
   lucas - A etcd v3 key/value browser implemented in go

USAGE:
   lucas [global options] command [command options] [arguments...]

VERSION:
   0.0.1

COMMANDS:
   run  run lucas web server

GLOBAL OPTIONS:
   --debug                          set debug mode to lucas
   --endpoints value                machine addresses in the cluster (default: "http://127.0.0.1:2379,http://127.0.0.1:4001")
   --cert-file value                identify HTTPS client using this SSL certificate file
   --key-file value                 identify HTTPS client using this SSL key file
   --ca-file value                  verify certificates of HTTPS-enabled servers using this CA bundle
   --help                           show help
   --version                        print the version

Run in docker

# Simply use docker command     
docker run -d -p 8088:8080  -v /etc/kubernetes/pki/etcd/:/etc/kubernetes/pki/etcd/ -e CA_FILE=/etc/kubernetes/pki/etcd/ca.pem -e CERT_FILE=/etc/kubernetes/pki/etcd/etcd-client.pem -e KEY_FILE=/etc/kubernetes/pki/etcd/etcd-client-key.pem -e ENDPOINTS="YOUR ENDPOINTS" registry.cn-hangzhou.aliyuncs.com/ringtail/lucas:0.0.2

# use yaml          
kubectl create -f kubernetes-deployment.yaml (Add master node deployment affinity)

Demo

lucas's People

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lucas's Issues

Archive this project

I attempted to build and run this but failed miserably: The go version used is 1.8 which is quite old, and build on an arm64 machine failed even after modding and vendoring all dependencies with go 1.21 which, along with the most recent issue having interactions from 2022, leads me to believe that this project is no longer actively maintained. If this repository were to be archived this fact would become immediately obvious for everyone that ended up here from the official ETCD page :-)

lucas can not get etcd key/value, error in logs

2020/01/13 07:30:26 http: panic serving 10.0.61.153:15182: runtime error: invalid memory address or nil pointer dereference
goroutine 3346 [running]:
net/http.(*conn).serve.func1(0xc42041a460)
/usr/local/go/src/net/http/server.go:1721 +0xd0
panic(0x91d960, 0xca5f80)
/usr/local/go/src/runtime/panic.go:489 +0x2cf
github.com/ringtail/lucas/backend/services.(*Store).List(0xc4201d6740, 0x0, 0x0, 0xc420397ac8, 0x5f6ce8, 0x0)
/src/github.com/ringtail/lucas/backend/services/store.go:73 +0x17a
github.com/ringtail/lucas/backend/services.(*Store).ListByPath(0xc4201d6740, 0x0, 0x0, 0x3)
/src/github.com/ringtail/lucas/backend/services/store.go:96 +0x64
github.com/ringtail/lucas/backend/handlers.StoreHandler(0xc6d3a0, 0xc4201a35e0, 0xc42041e300)
/src/github.com/ringtail/lucas/backend/handlers/storeHandler.go:34 +0x5ea
net/http.HandlerFunc.ServeHTTP(0x9e6818, 0xc6d3a0, 0xc4201a35e0, 0xc42041e300)
/usr/local/go/src/net/http/server.go:1942 +0x44
net/http.(*ServeMux).ServeHTTP(0xc42012adb0, 0xc6d3a0, 0xc4201a35e0, 0xc42041e300)
/usr/local/go/src/net/http/server.go:2238 +0x130
github.com/ringtail/lucas/backend.(*LucasServer).Middleware.func1(0xc6d3a0, 0xc4201a35e0, 0xc42041e200)
/src/github.com/ringtail/lucas/backend/backend.go:28 +0x17e
net/http.HandlerFunc.ServeHTTP(0xc4201231a0, 0xc6d3a0, 0xc4201a35e0, 0xc42041e200)
/usr/local/go/src/net/http/server.go:1942 +0x44
net/http.serverHandler.ServeHTTP(0xc420142160, 0xc6d3a0, 0xc4201a35e0, 0xc42041e200)
/usr/local/go/src/net/http/server.go:2568 +0x92
net/http.(*conn).serve(0xc42041a460, 0xc6dbe0, 0xc4203897c0)
/usr/local/go/src/net/http/server.go:1825 +0x612
created by net/http.(*Server).Serve
/usr/local/go/src/net/http/server.go:2668 +0x2ce

etcd key太多无法列出

具体报错信息如下：

time="2018-12-13T09:56:36Z" level=error msg="Failed to list keys from etcd, because of rpc error: code = ResourceExhausted desc = grpc: received message larger than max (9506813 vs. 4194304)"

Error yaml deployment for k8s

Kubernetes version 1.21.1

root@node3:/etc/kubernetes# kubectl create -f https://github.com/ringtail/lucas/raw/master/kubernetes-deployment.yaml
service/lucas created
error: unable to recognize "https://github.com/ringtail/lucas/raw/master/kubernetes-deployment.yaml": no matches for kind "Deployment" in version "extensions/v1beta1"

Need to be asynchronous when fetching values

Add etcd metrics visualization and key size monitoring support

http: panic serving 172.16.0.128:53660: runtime error: invalid memory address or nil pointer dereference

大佬好：

环境版本：
kubernetes: 1.11.5
docker: 17.03-ce
linux: centos 4.18.16

通过k8s yaml文件创建有如下问题，但是docker创建就没有问题
通过k8s yaml创建问题如下：
2018/12/13 04:48:17 http: panic serving 172.16.0.128:53642: runtime error: invalid memory address or nil pointer dereference
goroutine 18 [running]:
net/http.(*conn).serve.func1(0xc420152000)
/usr/local/go/src/net/http/server.go:1721 +0xd0
panic(0x91d960, 0xca5f80)
/usr/local/go/src/runtime/panic.go:489 +0x2cf
github.com/ringtail/lucas/backend/services.createTlsConf(0xc420014008, 0x1f, 0xc420014069, 0x25, 0xc42001403a, 0x21, 0xc420032a98, 0x66c7aa, 0xc420032a38)
/src/github.com/ringtail/lucas/backend/services/store.go:58 +0xe6
github.com/ringtail/lucas/backend/services.New(0xc42001409a, 0x1b, 0xc420014008, 0x1f, 0xc420014069, 0x25, 0xc42001403a, 0x21, 0xc420123260, 0x14, ...)
/src/github.com/ringtail/lucas/backend/services/store.go:34 +0xf1
github.com/ringtail/lucas/backend/handlers.StoreHandler(0xc6d3a0, 0xc4201242a0, 0xc42000ac00)
/src/github.com/ringtail/lucas/backend/handlers/storeHandler.go:24 +0x8c3
net/http.HandlerFunc.ServeHTTP(0x9e6818, 0xc6d3a0, 0xc4201242a0, 0xc42000ac00)
/usr/local/go/src/net/http/server.go:1942 +0x44
net/http.(*ServeMux).ServeHTTP(0xc420127260, 0xc6d3a0, 0xc4201242a0, 0xc42000ac00)
/usr/local/go/src/net/http/server.go:2238 +0x130
github.com/ringtail/lucas/backend.(*LucasServer).Middleware.func1(0xc6d3a0, 0xc4201242a0, 0xc42015e000)
/src/github.com/ringtail/lucas/backend/backend.go:28 +0x17e
net/http.HandlerFunc.ServeHTTP(0xc4201230e0, 0xc6d3a0, 0xc4201242a0, 0xc42015e000)
/usr/local/go/src/net/http/server.go:1942 +0x44
net/http.serverHandler.ServeHTTP(0xc420093ef0, 0xc6d3a0, 0xc4201242a0, 0xc42015e000)
/usr/local/go/src/net/http/server.go:2568 +0x92
net/http.(*conn).serve(0xc420152000, 0xc6dbe0, 0xc42014a0c0)
/usr/local/go/src/net/http/server.go:1825 +0x612
created by net/http.(*Server).Serve
/usr/local/go/src/net/http/server.go:2668 +0x2ce

我的yaml文件如下：

apiVersion: v1
kind: Service
metadata:
annotations:
derrick.service.type: nodeport
derrick.version: 0.0.14
labels:
derrick.service: lucas
name: lucas
namespace: se
spec:
ports:

name: "8080"
port: 8080
targetPort: 8080
nodePort: 30003
selector:
derrick.service: lucas
type: NodePort

apiVersion: extensions/v1beta1
#apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
derrick.version: 0.0.14
labels:
derrick.service: lucas
name: lucas
namespace: se
spec:
replicas: 1
template:
metadata:
labels:
derrick.service: lucas
spec:
# nodeSelector:
# node-role.kubernetes.io/master: ''
# tolerations:
# - key: node-role.kubernetes.io/master
# operator: Exists
containers:
- image: registry.cn-hangzhou.aliyuncs.com/ringtail/lucas:0.0.1
name: web
ports:
- containerPort: 8080
env:
- name: CA_FILE
value: /etc/kubernetes/pki/etcd/ca.pem
- name: CERT_FILE
value: /etc/kubernetes/pki/etcd/etcd.pem
- name: KEY_FILE
value: /etc/kubernetes/pki/etcd/etcd-key.pem
- name: ENDPOINTS
value: "https://etcd-leader-ip:2379"
volumeMounts:
- mountPath: /etc/kubernetes/pki/etcd
name: etcd-certs-0
readOnly: true
volumes:
- hostPath:
path: /opt/etcd-v3.3.10-linux-amd64
type: DirectoryOrCreate
name: etcd-certs-0

通过docker创建就可以使用，用的相同的配置，docker执行如下：

docker run -d -p 30003:8080 -v /opt/etcd-v3.3.10-linux-amd64/:/etc/kubernetes/pki/etcd/ -e CA_FILE=/etc/kubernetes/pki/etcd/ca.pem -e CERT_FILE=/etc/kubernetes/pki/etcd/etcd.pem -e KEY_FILE=/etc/kubernetes/pki/etcd/etcd-key.pem -e ENDPOINTS="https://etcd-leader-ip:2379" registry.cn-hangzhou.aliyuncs.com/ringtail/lucas:0.0.1

"Failed to crate tls config, because of open /etc/kubernetes/pki/etcd/etcd-client.pem: no such file or directory"

time="2020-02-25T13:31:59Z" level=panic msg="Failed to crate tls config, because of open /etc/kubernetes/pki/etcd/etcd-client.pem: no such file or directory"

大神可以修复下view乱码问题吗

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