kubernetes中Harbor有什么用
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一:简介
Harbor是一个用于存储和分发Docker镜像的企业级Registry服务器。
镜像的存储harbor使用的是官方的docker registry(v2命名是distribution)服务去完成。harbor在docker distribution的基础上增加了一些安全、访问控制、管理的功能以满足企业对于镜像仓库的需求。harbor以docker-compose的规范形式组织各个组件,并通过docker-compose工具进行启停。
docker的registry是用本地存储或者s3都是可以的,harbor的功能是在此之上提供用户权限管理、镜像复制等功能,提高使用的registry的效率。Harbor的镜像拷贝功能是通过docker registry的API去拷贝,这种做法屏蔽了繁琐的底层文件操作、不仅可以利用现有docker registry功能不必重复造轮子,而且可以解决冲突和一致性的问题。
二:Harbor架构
三:主要组件
Proxy:对应启动组件nginx。它是一个nginx反向代理,代理Notary client(镜像认证)、Docker client(镜像上传下载等)和浏览器的访问请求(Core Service)给后端的各服务;
UI(Core Service):对应启动组件harbor-ui。底层数据存储使用MySQL数据库,主要提供了四个子功能:
UI:一个web管理页面ui;
API:Harbor暴露的API服务;
Auth:用户认证服务,decode后的token中的用户信息在这里进行认证;auth后端可以接db、ldap、uaa三种认证实现;
Token服务(上图中未体现):负责根据用户在每个project中的role来为每一个docker push/pull命令issuing一个token,如果从docker client发送给registry的请求没有带token,registry会重定向请求到token服务创建token。
Registry:对应启动组件registry。负责存储镜像文件,和处理镜像的pull/push命令。Harbor对镜像进行强制的访问控制,Registry会将客户端的每个pull、push请求转发到token服务来获取有效的token。
Admin Service:对应启动组件harbor-adminserver。是系统的配置管理中心附带检查存储用量,ui和jobserver启动时候需要加载adminserver的配置;
Job Sevice:对应启动组件harbor-jobservice。负责镜像复制工作的,他和registry通信,从一个registry pull镜像然后push到另一个registry,并记录job_log;
Log Collector:对应启动组件harbor-log。日志汇总组件,通过docker的log-driver把日志汇总到一起;
Volnerability Scanning:对应启动组件clair。负责镜像扫描
Notary:对应启动组件notary。负责镜像认证
DB:对应启动组件harbor-db,负责存储project、 user、 role、replication、image_scan、access等的metadata数据。
四:安装
1、安装python-pip
yum -y install epel-release
yum -y install python-pip
2、安装docker-compose
pip install docker-compose
待安装完成后,执行查询版本的命令,即可安装docker-compose
docker-compose version
3.安装Harbor
wget https://storage.googleapis.com/harbor-releases/release-1.4.0/harbor-offline-installer-v1.4.0.tgz
tar -zxvf harbor-offline-installer-v1.4.0.tgz
配置文件 harbor.cfg
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## Configuration file of Harbor
#The IP address or hostname to access admin UI and registry service.
#DO NOT use localhost or 127.0.0.1, because Harbor needs to be accessed by external clients.
hostname = 120.79.156.135
#The protocol for accessing the UI and token/notification service, by default it is http.
#It can be set to https if ssl is enabled on nginx.
ui_url_protocol = http
#Maximum number of job workers in job service
max_job_workers = 3
#Determine whether or not to generate certificate for the registry's token.
#If the value is on, the prepare script creates new root cert and private key
#for generating token to access the registry. If the value is off the default key/cert will be used.
#This flag also controls the creation of the notary signer's cert.
customize_crt = on
#The path of cert and key files for nginx, they are applied only the protocol is set to https
ssl_cert = /mnt/harbor/cert/server.crt
ssl_cert_key = /mnt/harbor/cert/server.key
#The path of secretkey storage
secretkey_path = /mnt/harbor
#Admiral's url, comment this attribute, or set its value to NA when Harbor is standalone
admiral_url = NA
#Log files are rotated log_rotate_count times before being removed. If count is 0, old versions are removed rather than rotated.
log_rotate_count = 50
#Log files are rotated only if they grow bigger than log_rotate_size bytes. If size is followed by k, the size is assumed to be in kilobytes.
#If the M is used, the size is in megabytes, and if G is used, the size is in gigabytes. So size 100, size 100k, size 100M and size 100G
#are all valid.
log_rotate_size = 200M
#NOTES: The properties between BEGIN INITIAL PROPERTIES and END INITIAL PROPERTIES
#only take effect in the first boot, the subsequent changes of these properties
#should be performed on web ui
#************************BEGIN INITIAL PROPERTIES************************
#Email account settings for sending out password resetting emails.
#Email server uses the given username and password to authenticate on TLS connections to host and act as identity.
#Identity left blank to act as username.
email_identity =
email_server = smtp.mydomain.com
email_server_port = 25
email_username = sample_admin@mydomain.com
email_password = abc
email_from = admin
email_ssl = false
email_insecure = false
##The initial password of Harbor admin, only works for the first time when Harbor starts.
#It has no effect after the first launch of Harbor.
#Change the admin password from UI after launching Harbor.
harbor_admin_password = Weinong$2017
##By default the auth mode is db_auth, i.e. the credentials are stored in a local database.
#Set it to ldap_auth if you want to verify a user's credentials against an LDAP server.
auth_mode = db_auth
#The url for an ldap endpoint.
ldap_url = ldaps://ldap.mydomain.com
#A user's DN who has the permission to search the LDAP/AD server.
#If your LDAP/AD server does not support anonymous search, you should configure this DN and ldap_search_pwd.
#ldap_searchdn = uid=searchuser,ou=people,dc=mydomain,dc=com
#the password of the ldap_searchdn
#ldap_search_pwd = password
#The base DN from which to look up a user in LDAP/AD
ldap_basedn = ou=people,dc=mydomain,dc=com
#Search filter for LDAP/AD, make sure the syntax of the filter is correct.
#ldap_filter = (objectClass=person)
# The attribute used in a search to match a user, it could be uid, cn, email, sAMAccountName or other attributes depending on your LDAP/AD
ldap_uid = uid
#the scope to search for users, 0-LDAP_SCOPE_BASE, 1-LDAP_SCOPE_ONELEVEL, 2-LDAP_SCOPE_SUBTREE
ldap_scope = 2
#Timeout (in seconds) when connecting to an LDAP Server. The default value (and most reasonable) is 5 seconds.
ldap_timeout = 5
#Verify certificate from LDAP server
ldap_verify_cert = true
#Turn on or off the self-registration feature
self_registration = on
#The expiration time (in minute) of token created by token service, default is 30 minutes
token_expiration = 30
#The flag to control what users have permission to create projects
#The default value "everyone" allows everyone to creates a project.
#Set to "adminonly" so that only admin user can create project.
project_creation_restriction = everyone
#************************END INITIAL PROPERTIES************************
#######Harbor DB configuration section#######
#The address of the Harbor database. Only need to change when using external db.
db_host = mysql
#The password for the root user of Harbor DB. Change this before any production use.
db_password = Weinong$2017
#The port of Harbor database host
db_port = 3306
#The user name of Harbor database
db_user = root
##### End of Harbor DB configuration#######
#The redis server address. Only needed in HA installation.
redis_url =
##########Clair DB configuration############
#Clair DB host address. Only change it when using an exteral DB.
clair_db_host = postgres
#The password of the Clair's postgres database. Only effective when Harbor is deployed with Clair.
#Please update it before deployment. Subsequent update will cause Clair's API server and Harbor unable to access Clair's database.
clair_db_password = password
#Clair DB connect port
clair_db_port = 5432
#Clair DB username
clair_db_username = postgres
#Clair default database
clair_db = postgres
##########End of Clair DB configuration############
#The following attributes only need to be set when auth mode is uaa_auth
uaa_endpoint = uaa.mydomain.org
uaa_clientid = id
uaa_clientsecret = secret
uaa_verify_cert = true
uaa_ca_cert = /path/to/ca.pem
### Docker Registry setting ###
#registry_storage_provider can be: filesystem, s3, gcs, azure, etc.
registry_storage_provider_name = filesystem
#registry_storage_provider_config is a comma separated "key: value" pairs, e.g. "key1: value, key2: value2".
#Refer to https://docs.docker.com/registry/configuration/#storage for all available configuration.
registry_storage_provider_config =
配置文件docker-compose.yml
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version: '2'
services:
log:
image: vmware/harbor-log:v1.4.0
container_name: harbor-log
restart: always
volumes:
- /mnt/harbor/log/:/var/log/docker/:z
- ./common/config/log/:/etc/logrotate.d/:z
ports:
- 127.0.0.1:1514:10514
networks:
- harbor
registry:
image: vmware/registry-photon:v2.6.2-v1.4.0
container_name: registry
restart: always
volumes:
- /mnt/harbor/registry:/storage:z
- ./common/config/registry/:/etc/registry/:z
networks:
- harbor
environment:
- GODEBUG=netDNS=cgo
command:
["serve", "/etc/registry/config.yml"]
depends_on:
- log
logging:
driver: "syslog"
options:
syslog-address: "tcp://127.0.0.1:1514"
tag: "registry"
mysql:
image: vmware/harbor-db:v1.4.0
container_name: harbor-db
restart: always
volumes:
- /mnt/harbor/database:/var/lib/mysql:z
networks:
- harbor
env_file:
- ./common/config/db/env
depends_on:
- log
logging:
driver: "syslog"
options:
syslog-address: "tcp://127.0.0.1:1514"
tag: "mysql"
adminserver:
image: vmware/harbor-adminserver:v1.4.0
container_name: harbor-adminserver
env_file:
- ./common/config/adminserver/env
restart: always
volumes:
- /mnt/harbor/config/:/etc/adminserver/config/:z
- /mnt/harbor/secretkey:/etc/adminserver/key:z
- /mnt/harbor/:/data/:z
networks:
- harbor
depends_on:
- log
logging:
driver: "syslog"
options:
syslog-address: "tcp://127.0.0.1:1514"
tag: "adminserver"
ui:
image: vmware/harbor-ui:v1.4.0
container_name: harbor-ui
env_file:
- ./common/config/ui/env
restart: always
volumes:
- ./common/config/ui/app.conf:/etc/ui/app.conf:z
- ./common/config/ui/private_key.pem:/etc/ui/private_key.pem:z
- ./common/config/ui/certificates/:/etc/ui/certificates/:z
- /mnt/harbor/secretkey:/etc/ui/key:z
- /mnt/harbor/ca_download/:/etc/ui/ca/:z
- /mnt/harbor/psc/:/etc/ui/token/:z
networks:
- harbor
depends_on:
- log
- adminserver
- registry
logging:
driver: "syslog"
options:
syslog-address: "tcp://127.0.0.1:1514"
tag: "ui"
jobservice:
image: vmware/harbor-jobservice:v1.4.0
container_name: harbor-jobservice
env_file:
- ./common/config/jobservice/env
restart: always
volumes:
- /mnt/harbor/job_logs:/var/log/jobs:z
- ./common/config/jobservice/app.conf:/etc/jobservice/app.conf:z
- /mnt/harbor/secretkey:/etc/jobservice/key:z
networks:
- harbor
depends_on:
- ui
- adminserver
logging:
driver: "syslog"
options:
syslog-address: "tcp://127.0.0.1:1514"
tag: "jobservice"
proxy:
image: vmware/nginx-photon:v1.4.0
container_name: nginx
restart: always
volumes:
- ./common/config/nginx:/etc/nginx:z
networks:
- harbor
ports:
- 80:80
- 443:443
- 4443:4443
depends_on:
- mysql
- registry
- ui
- log
logging:
driver: "syslog"
options:
syslog-address: "tcp://127.0.0.1:1514"
tag: "proxy"
networks:
harbor:
external: false
安装Harbor
./install.sh
可以使用docker-compose来管理Harbor的生命周期。 一些有用的命令列出如下:
docker-compose ps 查看
docker-compose stop 停止
docker-compose start 启动
docker-compose down 删除,利用./install.sh可以重新安装
五:验证
1.碰到的问题
a. 错误提示
点击(此处)折叠或打开
/usr/lib/python2.7/site-packages/requests/__init__.py:80: RequestsDependencyWarning: urllib3 (1.21.1) or chardet (2.2.1) doesn
原因:python库中urllib3 (1.21.1) or chardet (2.2.1) 的版本不兼容
解决办法:
pip uninstall urllib3
pip uninstall chardet
pip install requests
b.错误提示:“harbor failed to initialize the system: read /etc/adminserver/key: is a directory”
原因:harbor.cfg中的secretkey_path和docker-compose.yml中的设置不一致
2.ui 界面
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