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Krakend 대해 알아보자

미니대왕님 2020. 3. 9. 17:00

 

[root@localhost sys4u]# docker run -p 8080:8080 -v $PWD:/etc/krakend/ devopsfaith/krakend run --config /etc/krakend/krakend.json
bash: docker: 명령을 찾을 수 없습니다...
'podman-docker' 명령을 제공하는 'docker' 꾸러미를 설치하시겠습니까? [N/y] y


 * 큐 대기 중...
 * 패키지 목록을 불러오고 있습니다....
다음 패키지를 설치해야 합니다:
 conmon-2:2.0.6-1.module_el8.1.0+272+3e64ee36.x86_64    OCI container runtime monitor
 libvarlink-18-3.el8.x86_64     Varlink C Library
 podman-docker-1.6.4-2.module_el8.1.0+272+3e64ee36.noarch       Emulate Docker CLI using podman
 podman-manpages-1.6.4-2.module_el8.1.0+272+3e64ee36.noarch     Man pages for the podman commands
다음 패키지를 갱신해야 합니다:
 containernetworking-plugins-0.8.3-4.module_el8.1.0+272+3e64ee36.x86_64 CNI network plugins
 libseccomp-2.4.1-1.el8.x86_64  Enhanced seccomp library
 podman-1.6.4-2.module_el8.1.0+272+3e64ee36.x86_64      Manage Pods, Containers and Container Images
 runc-1.0.0-64.rc9.module_el8.1.0+272+3e64ee36.x86_64   CLI for running Open Containers
 slirp4netns-0.4.2-2.git21fdece.module_el8.1.0+272+3e64ee36.x86_64      slirp for network namespaces
변경 사항을 수행하시겠습니까? [N/y] y


 * 큐 대기 중...
 * 인증 대기 중...
 * 큐 대기 중...
 * 패키지 다운로드 중...
 * 데이터 요청 중...
 * 변경 사항 시험 중...
 * 갱신 설치 중...
 * 패키지 설치 중...
 * 갱신 설치 중...
 * 패키지 설치 중...
 * 패키지 정리 중...
 * 패키지 설치 중...
 * 패키지 정리 중...
 * 패키지 설치 중...
 * 패키지 정리 중...
 * 패키지 설치 중...
 * 패키지 정리 중...
 * 패키지 설치 중...
 * 패키지 정리 중...
 * 패키지 설치 중...
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
Trying to pull registry.redhat.io/devopsfaith/krakend...
  unable to retrieve auth token: invalid username/password: unauthorized: Please login to the Red Hat Registry using your Customer Portaledhat.com/RegistryAuthentication
Trying to pull quay.io/devopsfaith/krakend...
  unauthorized: access to the requested resource is not authorized
Trying to pull docker.io/devopsfaith/krakend...
Getting image source signatures
Copying blob bc51dd8edc1b done
Copying blob c777086aed63 done
Copying blob 00136d8bf764 done
Copying blob bfd6eeafc48c done
Copying config af514a1c73 done
Writing manifest to image destination
Storing signatures
ERROR parsing the configuration file: '/etc/krakend/krakend.json' (open): no such file or directory

[root@localhost sys4u]# ll /etc/krakend/krakend.json
ls: cannot access '/etc/krakend/krakend.json': 그런 파일이나 디렉터리가 없습니다

 

 

Linux

CentOS and Redhat

The installation process requires following these steps:

  1. Install the repo package
  2. Install the KrakenD package
  3. Start the KrakenD service

Paste this in the terminal:

 

$rpm -Uvh http://repo.krakend.io/rpm/krakend-repo-0.2-0.x86_64.rpm

$ yum install -y krakend

$ systemctl start krakend 

 

 

[root@localhost krakend]# cat krakend.json
{
    "version": 2,
    "name": "My lovely gateway",
    "port": 8000,
    "cache_ttl": "3600s",
    "timeout": "3s",
    "extra_config": {
      "github_com/devopsfaith/krakend-gologging": {
        "level":  "DEBUG",
        "prefix": "[KRAKEND]",
        "syslog": false,
        "stdout": true
      },
      "github_com/devopsfaith/krakend-metrics": {
        "collection_time": "60s",
        "proxy_disabled": false,
        "router_disabled": false,
        "backend_disabled": false,
        "endpoint_disabled": false,
        "listen_address": ":8090"
      },
      "github_com/devopsfaith/krakend-cors": {
        "allow_origins": [ "http://192.168.99.100:3000", "http://localhost:3000" ],
        "allow_methods": [ "POST", "GET" ],
        "allow_headers": [ "Origin", "Authorization", "Content-Type" ],
        "expose_headers": [ "Content-Length" ],
        "max_age": "12h"
      }
    },
    "endpoints": [
        {
            "endpoint": "/supu",
            "method": "GET",
            "headers_to_pass": ["Authorization", "Content-Type"],
            "backend": [
                {
                    "host": [
                        "http://127.0.0.1:8000"
                    ],
                    "url_pattern": "/__debug/supu",
                    "extra_config": {
                        "github.com/devopsfaith/krakend-martian": {
                            "fifo.Group": {
                                "scope": ["request", "response"],
                                "aggregateErrors": true,
                                "modifiers": [
                                {
                                    "header.Modifier": {
                                        "scope": ["request", "response"],
                                        "name" : "X-Martian",
                                        "value" : "ouh yeah!"
                                    }
                                },
                                {
                                    "header.RegexFilter": {
                                        "scope": ["request"],
                                        "header" : "X-Neptunian",
                                        "regex" : "no!",
                                        "modifier": {
                                            "header.Modifier": {
                                                "scope": ["request"],
                                                "name" : "X-Martian-New",
                                                "value" : "some value"
                                            }
                                        }
                                    }
                                }
                                ]
                            }
                        },
                        "github.com/devopsfaith/krakend-circuitbreaker/gobreaker": {
                            "interval": 60,
                            "timeout": 10,
                            "maxErrors": 1
                        }
                    }
                }
            ]
        },
        {
            "endpoint": "/github/{user}",
            "method": "GET",
            "backend": [
                {
                    "host": [
                        "https://api.github.com"
                    ],
                    "url_pattern": "/",
                    "whitelist": [
                        "authorizations_url",
                        "code_search_url"
                    ],
                    "disable_host_sanitize": true,
                    "extra_config": {
                        "github.com/devopsfaith/krakend-martian": {
                            "fifo.Group": {
                                "scope": ["request", "response"],
                                "aggregateErrors": true,
                                "modifiers": [
                                {
                                    "header.Modifier": {
                                        "scope": ["request", "response"],
                                        "name" : "X-Martian",
                                        "value" : "ouh yeah!"
                                    }
                                },
                                {
                                    "body.Modifier": {
                                        "scope": ["request"],
                                        "contentType" : "application/json",
                                        "body" : "eyJtc2ciOiJ5b3Ugcm9jayEifQ=="
                                    }
                                },
                                {
                                    "header.RegexFilter": {
                                        "scope": ["request"],
                                        "header" : "X-Neptunian",
                                        "regex" : "no!",
                                        "modifier": {
                                            "header.Modifier": {
                                                "scope": ["request"],
                                                "name" : "X-Martian-New",
                                                "value" : "some value"
                                            }
                                        }
                                    }
                                }
                                ]
                            }
                        },
                        "github.com/devopsfaith/krakend-ratelimit/juju/proxy": {
                            "maxRate": 2,
                            "capacity": 2
                        },
                        "github.com/devopsfaith/krakend-circuitbreaker/gobreaker": {
                            "interval": 60,
                            "timeout": 10,
                            "maxErrors": 1
                        }
                    }
                }
            ]
        },
        {
            "endpoint": "/private/{user}",
            "backend": [
                {
                    "host": [ "http://api.github.com" ],
                    "url_pattern": "/",
                    "whitelist": [
                        "authorizations_url",
                        "code_search_url"
                    ]
                }
            ],
            "extra_config": {
                "github.com/devopsfaith/krakend-jose/validator": {
                    "alg": "RS256",
                    "aud": "http://api.example.com",
                    "roles_key": "http://api.example.com/custom/roles",
                    "roles": [ "user", "admin" ],
                    "jwk-url": "https://albert-test.auth0.com/.well-known/jwks.json"
                }
            }
        },
        {
            "endpoint": "/show/{id}",
            "backend": [
                {
                    "host": [
                        "http://showrss.info/"
                    ],
                    "url_pattern": "/user/schedule/{id}.rss",
                    "encoding": "rss",
                    "group": "schedule",
                    "whitelist": ["items", "title"],
                    "extra_config": {
                        "github.com/devopsfaith/krakend-ratelimit/juju/proxy": {
                            "maxRate": 1,
                            "capacity": 1
                        },
                        "github.com/devopsfaith/krakend-circuitbreaker/gobreaker": {
                            "interval": 60,
                            "timeout": 10,
                            "maxErrors": 1
                        }
                    }
                },
                {
                    "host": [
                        "http://showrss.info/"
                    ],
                    "url_pattern": "/user/{id}.rss",
                    "encoding": "rss",
                    "group": "available",
                    "whitelist": ["items", "title"],
                    "extra_config": {
                        "github.com/devopsfaith/krakend-ratelimit/juju/proxy": {
                            "maxRate": 2,
                            "capacity": 2
                        },
                        "github.com/devopsfaith/krakend-circuitbreaker/gobreaker": {
                            "interval": 60,
                            "timeout": 10,
                            "maxErrors": 1
                        }
                    }
                }
            ],
            "extra_config": {
                "github.com/devopsfaith/krakend-ratelimit/juju/router": {
                    "maxRate": 50,
                    "clientMaxRate": 5,
                    "strategy": "ip"
                }
            }
        }
    ]
}

 

 

Krakend 를실행 해보고 process 도 확인해보겠습니다. !

[root@localhost krakend]# systemctl start krakend
[root@localhost krakend]#
[root@localhost krakend]# ps -ef  | grep krakend
krakend  11601     1 59 00:28 ?        00:00:04 /usr/bin/krakend run -c /etc/krakend/krakend.json
root     11612 11320  0 00:29 pts/2    00:00:00 grep --color=auto krakend

C:\3. 자동

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