一 多Harbor高可用介紹

共享後端儲存是一種比較標準的方案，將多個Harbor例項共享同一個後端儲存，任何一個例項持久化到儲存的映象，都可被其他例項中讀取。通過前置LB元件，如Keepalived，可以分流到不同的例項中去處理，從而實現負載均衡，也避免了單點故障，其架構圖如下： 方案說明: 共享儲存：Harbor的後端儲存目前支援AWS S3、Openstack Swift, Ceph等，本實驗環境採用NFS； 共享Session：harbor預設session會存放在redis中，可將redis獨立出來，從而實現在不同例項上的session共享，獨立出來的redis也可採用redis sentinel或者redis cluster等方式來保證redis的高可用性，本實驗環境採用單臺redis； 資料庫高可用：MySQL多個例項無法共享一份mysql資料檔案，可將harbor中的資料庫獨立出來。讓多例項共用一個外部資料庫，獨立出來的mysql資料庫也可採用mysqls cluster等方式來保證mysql的高可用性，本實驗環境採用單臺mysql。

二 正式部署

2.1 前期準備

 

節點	IP地址	備註
docker01	172.24.8.111	Docker harbor node01
docker02	172.24.8.112	Docker harbor node02
docker03	172.24.8.113	mysql+redis節點
docker04	172.24.8.114	Docker客戶端，用於測試倉庫
nfsslb	172.24.8.71	共享nfs儲存節點 Keepalived節點 VIP地址：172.24.8.200/32
slb02	172.24.8.72	Keepalived節點 VIP地址：172.24.8.200/32

  架構示意圖： 前置配置：

• docker、docker-compose安裝（見《009.Docker Compose基礎使用》）；
• ntp時鐘同步（建議項）；
• 相關防火牆-SELinux放通或關閉；
• nfsslb和slb02節點新增解析：echo "172.24.8.200 reg.harbor.com" >> /etc/hosts

2.2 建立nfs

  1 [[email protected] ~]# yum -y install nfs-utils*
  2 [[email protected] ~]# mkdir /myimages		#用於共享映象
  3 [[email protected] ~]# mkdir /mydatabase		#用於儲存資料庫資料
  4 [[email protected] ~]# echo -e "/dev/vg01/lv01 /myimages ext4 defaults 0 0\n/dev/vg01/lv02 /mydatabase ext4 defaults 0 0">> /etc/fstab
  5 [[email protected] ~]# mount -a
  6 [[email protected] ~]# vi /etc/exports
  7 /myimages 172.24.8.0/24(rw,no_root_squash)
  8 /mydatabase 172.24.8.0/24(rw,no_root_squash)
  9 [[email protected] ~]# systemctl start nfs.service
 10 [[email protected] ~]# systemctl enable nfs.service

  注意：nfsserver節點採用獨立LVM磁碟作為nfs掛載目錄，並配置相應共享目錄，更多nfs配置見——NFS《004.NFS配置例項》。

2.3 掛載nfs

  1 [email protected]:~# apt-get -y install nfs-common
  2 [email protected]:~# apt-get -y install nfs-common
  3 [email protected]:~# apt-get -y install nfs-common
  4 
  5 [email protected]:~# mkdir /data
  6 [email protected]:~# mkdir /data
  7 
  8 [email protected]:~# echo "172.24.8.71:/myimages /data nfs defaults,_netdev 0 0">> /etc/fstab
  9 [email protected]:~# echo "172.24.8.71:/myimages /data nfs defaults,_netdev 0 0">> /etc/fstab
 10 [email protected]:~# echo "172.24.8.71:/mydatabase /database nfs defaults,_netdev 0 0">> /etc/fstab
 11 
 12 [email protected]:~# mount -a
 13 [email protected]:~# mount -a
 14 [email protected]:~# mount -a
 15 
 16 [email protected]:~# mkdir -p /database/mysql
 17 [email protected]:~# mkdir -p /database/redis

 

2.4 部署外部mysql-redis

  1 [email protected]:~# mkdir docker_compose/
  2 [email protected]:~# cd docker_compose/
  3 [email protected]:~/docker_compose# vi docker-compose.yml
  4 version: '3'
  5 services:
  6   mysql-server:
  7     hostname: mysql-server
  8     restart: always
  9     container_name: mysql-server
 10     image: mysql:5.7
 11     volumes:
 12       - /database/mysql:/var/lib/mysql
 13     command: --character-set-server=utf8
 14     ports:
 15       - '3306:3306'
 16     environment:
 17       MYSQL_ROOT_PASSWORD: x19901123
 18 #    logging:
 19 #      driver: "syslog"
 20 #      options:
 21 #        syslog-address: "tcp://172.24.8.112:1514"
 22 #        tag: "mysql"
 23   redis:
 24     hostname: redis-server
 25     container_name: redis-server
 26     restart: always
 27     image: redis:3
 28     volumes:
 29       - /database/redis:/data
 30     ports:
 31       - '6379:6379'
 32 #    logging:
 33 #      driver: "syslog"
 34 #      options:
 35 #        syslog-address: "tcp://172.24.8.112:1514"
 36 #        tag: "redis"

  提示：因為log容器為harbor中服務，當harbor暫未部署時，需要註釋相關配置，harbor部署完畢後取消註釋，然後重新up一次即可。

  1 [email protected]:~/docker_compose# docker-compose up -d
  2 [email protected]:~/docker_compose# docker-compose ps		#確認docker是否up
  3 [email protected]:~/docker_compose# netstat -tlunp			#確認相關埠是否啟動

 

2.5 下載harbor

  1 [email protected]:~# wget https://storage.googleapis.com/harbor-releases/harbor-offline-installer-v1.5.4.tgz
  2 [email protected]:~# tar xvf harbor-offline-installer-v1.5.4.tgz

  提示：docker02節點參考如上操作即可。

2.6 匯入registry表

  1 [email protected]:~# apt-get -y install mysql-client
  2 [email protected]:~# cd harbor/ha/
  3 [email protected]:~/harbor/ha# ll

 

  1 [email protected]:~/harbor/ha# mysql -h172.24.8.113 -uroot -p
  2 mysql> set session sql_mode='STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';					#必須修改sql_mode
  3 mysql> source ./registry.sql			#匯入registry資料表至外部資料庫。
  4 mysql> exit

  提示：只需要匯入一次即可。

2.7 修改harbor相關配置

  1 [email protected]:~/harbor/ha# cd /root/harbor/
  2 [email protected]:~/harbor# vi harbor.cfg				#修改harbor配置檔案
  3 hostname = 172.24.8.111
  4 db_host = 172.24.8.113
  5 db_password = x19901123
  6 db_port = 3306
  7 db_user = root
  8 redis_url = 172.24.8.113:6379
  9 [email protected]:~/harbor# vi prepare
 10 empty_subj = "/C=/ST=/L=/O=/CN=/"
 11 修改如下：
 12 empty_subj = "/C=US/ST=California/L=Palo Alto/O=VMware, Inc./OU=Harbor/CN=notarysigner"
 13 [email protected]:~/harbor# ./prepare				#載入相關配置

  提示：docker02參考如上配置即可； 由於採用外部mysql和redis，根據以下架構圖可知和資料庫相關的元件有UI和jobservices因此需要做相應修改，執行prepare命令，會自動將相應的資料庫引數同步至./common/config/ui/env和./common/config/adminserver/env。

  1 [email protected]:~/harbor# cat ./common/config/ui/env		#驗證
  2 _REDIS_URL=172.24.8.113:6379
  3 [email protected]:~/harbor# cat ./common/config/adminserver/env | grep MYSQL	#驗證
  4 MYSQL_HOST=172.24.8.113
  5 MYSQL_PORT=3306
  6 MYSQL_USR=root
  7 MYSQL_PWD=x19901123
  8 MYSQL_DATABASE=registry

 

2.8 docker-compose部署

  1 [email protected]:~/harbor# cp docker-compose.yml docker-compose.yml.bak
  2 [email protected]:~/harbor# cp ha/docker-compose.yml .
  3 [email protected]:~/harbor# vi docker-compose.yml
  4   log
  5     ports:
  6       - 1514:10514		#log需要對外部redis和mysql提供服務，因此只需要修改此處即可
  7 [email protected]:~/harbor# ./install.sh

  提示：由於redis和mysql採用外部部署，因此需要在docker-compose.yml中刪除或註釋redis和mysql的服務項，同時刪除其他服務對其的依賴，官方自帶的harbor中已經存在修改好的docker-compose檔案，位於ha目錄。 docker02節點參考2.5-2.8部署harbor即可。

2.9 重新構建外部redis和mysql

去掉log有關注釋項。

  1 [email protected]:~/docker_compose# docker-compose up -d
  2 [email protected]:~/docker_compose# docker-compose ps		#確認docker是否up
  3 [email protected]:~/docker_compose# netstat -tlunp			#確認相關埠是否啟動

 

2.10 Keepalived安裝

  1 [[email protected] ~]# yum -y install gcc gcc-c++ make kernel-devel kernel-tools kernel-tools-libs kernel libnl libnl-devel libnfnetlink-devel openssl-devel
  2 [[email protected] ~]# cd /tmp/
  3 [[email protected] ~]# tar -zxvf keepalived-2.0.8.tar.gz
  4 [[email protected] tmp]# cd keepalived-2.0.8/
  5 [[email protected] keepalived-2.0.8]# ./configure --sysconf=/etc --prefix=/usr/local/keepalived
  6 [[email protected] keepalived-2.0.8]# make && make install

  提示：slb02節點參考如上即可。

2.11 Keepalived配置

  1 [[email protected] ~]# cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak
  2 [email protected]:~# scp harbor/ha/sample/active_active/keepalived_active_active.conf [email protected]:/etc/keepalived/keepalived.conf
  3 [email protected]:~# scp harbor/ha/sample/active_active/check.sh [email protected]:/usr/local/bin/check.sh
  4 [email protected]:~# scp harbor/ha/sample/active_active/check.sh [email protected]:/usr/local/bin/check.sh
  5 [[email protected] ~]# chmod u+x /usr/local/bin/check.sh
  6 [[email protected] ~]# chmod u+x /usr/local/bin/check.sh
  7 [[email protected] ~]# vi /etc/keepalived/keepalived.conf
  8 global_defs {
  9   router_id haborlb
 10 }
 11 vrrp_sync_groups VG1 {
 12   group {
 13     VI_1
 14   }
 15 }
 16 vrrp_instance VI_1 {
 17   interface eth0
 18 
 19   track_interface {
 20     eth0
 21   }
 22 
 23   state MASTER
 24   virtual_router_id 51
 25   priority 10
 26 
 27   virtual_ipaddress {
 28     172.24.8.200
 29   }
 30   advert_int 1
 31   authentication {
 32     auth_type PASS
 33     auth_pass d0cker
 34   }
 35 
 36 }
 37 virtual_server 172.24.8.200 80 {
 38   delay_loop 15
 39   lb_algo rr
 40   lb_kind DR
 41   protocol TCP
 42   nat_mask 255.255.255.0
 43   persistence_timeout 10
 44 
 45   real_server 172.24.8.111 80 {
 46     weight 10
 47     MISC_CHECK {
 48         misc_path "/usr/local/bin/check.sh 172.24.8.111"
 49         misc_timeout 5
 50     }
 51   }
 52 
 53   real_server 172.24.8.112 80 {
 54     weight 10
 55     MISC_CHECK {
 56         misc_path "/usr/local/bin/check.sh 172.24.8.112"
 57         misc_timeout 5
 58     }
 59   }
 60 }
 61 [[email protected] ~]# scp /etc/keepalived/keepalived.conf [email protected]:/etc/keepalived/keepalived.conf	#Keepalived配置複製至slb02節點
 62 [[email protected] ~]# vi /etc/keepalived/keepalived.conf
 63 state BACKUP
 64 priority 8

  提示：harbor官方已提示Keepalived配置檔案及檢測指令碼，直接使用即可; lsb02節點設定為BACKUP，優先順序低於MASTER，其他預設即可。

2.12 slb節點配置LVS

  1 [[email protected] ~]# yum -y install ipvsadm
  2 [[email protected] ~]# vi ipvsadm.sh
  3 #!/bin/sh
  4 #****************************************************************#
  5 # ScriptName: ipvsadm.sh
  6 # Author: xhy
  7 # Create Date: 2018-10-28 02:40
  8 # Modify Author: xhy
  9 # Modify Date: 2018-10-28 02:40
 10 # Version:
 11 #***************************************************************#
 12 sudo ifconfig eth0:0 172.24.8.200 broadcast 172.24.8.200 netmask 255.255.255.255 up
 13 sudo route add -host 172.24.8.200 dev eth0:0
 14 sudo echo "1" > /proc/sys/net/ipv4/ip_forward
 15 sudo ipvsadm -C
 16 sudo ipvsadm -A -t 172.24.8.200:80 -s rr
 17 sudo ipvsadm -a -t 172.24.8.200:80 -r 172.24.8.111:80 -g
 18 sudo ipvsadm -a -t 172.24.8.200:80 -r 172.24.8.112:80 -g
 19 sudo ipvsadm
 20 sudo sysctl -p
 21 [[email protected] ~]# chmod u+x ipvsadm.sh
 22 [[email protected] ~]# echo "source /root/ipvsadm.sh" >> /etc/rc.local	#開機執行
 23 [[email protected] ~]# ./ipvsadm.sh

  示例解釋： ipvsadm -A -t 172.24.8.200:80 -s rr -p 600 表示在核心的虛擬伺服器列表中新增一條IP為192.168.10.200的虛擬伺服器，並且指定此虛擬伺服器的服務埠為80，其排程策略為輪詢模式，並且每個Real Server上的持續時間為600秒。 ipvsadm -a -t 172.24.8.200:80 -r 192.168.10.100:80 -g 表示在IP地位為192.168.10.10的虛擬伺服器上新增一條新的Real Server記錄，且虛擬伺服器的工作模式為直接路由模式。 提示：slb02節點參考以上配置即可，更多LVS可參考https://www.cnblogs.com/itzgr/category/1367969.html。

2.13 harbor節點配置VIP

  1 [email protected]:~# vi /etc/init.d/lvsrs
  2 #!/bin/bash
  3 # description:Script to start LVS DR real server.
  4 #
  5 . /etc/rc.d/init.d/functions
  6 VIP=172.24.8.200
  7 #修改相應的VIP
  8 case "$1" in
  9 start)
 10     #啟動 LVS-DR 模式，real server on this machine. 關閉ARP衝突檢測。
 11     echo "Start LVS of Real Server!"
 12     /sbin/ifconfig lo down
 13     /sbin/ifconfig lo up
 14     echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
 15     echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce
 16     echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
 17     echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
 18     /sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up
 19     /sbin/route add -host $VIP dev lo:0
 20     sudo sysctl -p
 21 ;;
 22 stop)
 23     #停止LVS-DR real server loopback device(s).
 24     echo "Close LVS Director Server!"
 25     /sbin/ifconfig lo:0 down
 26     echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore
 27     echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce
 28     echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore
 29     echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce
 30     sudo sysctl -p
 31 ;;
 32 status)
 33     # Status of LVS-DR real server.
 34     islothere=`/sbin/ifconfig lo:0 | grep $VIP`
 35     isrothere=`netstat -rn | grep "lo:0" | grep $VIP`
 36     if [ ! "$islothere" -o ! "isrothere" ];then
 37     # Either the route or the lo:0 device
 38     # not found.
 39         echo "LVS-DR real server Stopped!"
 40     else
 41         echo "LVS-DR real server Running..."
 42     fi
 43 ;;
 44 *)
 45     # Invalid entry.
 46     echo "$0: Usage: $0 {start|status|stop}"
 47     exit 1
 48 ;;
 49 esac
 50 [email protected]:~# chmod u+x /etc/init.d/lvsrs
 51 [email protected]:~# chmod u+x /etc/init.d/lvsrs

 

2.14 啟動相關服務

  1 [email protected]:~# service lvsrs start
  2 [email protected]:~# service lvsrs start
  3 [[email protected] ~]# systemctl start keepalived.service
  4 [[email protected] ~]# systemctl enable keepalived.service
  5 [[email protected] ~]# systemctl start keepalived.service
  6 [[email protected] ~]# systemctl enable keepalived.service

 

2.15 確認驗證

  1 [email protected]:~# ip addr			#驗證docker01/02/slb是否成功啟用vip

三 測試驗證

  1 [email protected]:~# vi /etc/hosts
  2 172.24.8.200 reg.harbor.com
  3 [email protected]:~# vi /etc/docker/daemon.json
  4 {
  5    "insecure-registries": ["http://reg.harbor.com"]
  6 }
  7 [email protected]:~# systemctl restart docker.service
  8 若是信任CA機構頒發的證書，相應關閉daemon.json中的配置。
  9 [email protected]:~# docker login reg.harbor.com		#登入registry
 10 Username: admin
 11 Password: Harbor12345

  提示：公開的registry可pull，但push也必須登入，私有的registry必須登入才可pull和push。

  1 [email protected]:~# docker pull hello-world
  2 [email protected]:~# docker tag hello-world:latest reg.harbor.com/library/hello-world:xhy
  3 [email protected]:~# docker push reg.harbor.com/library/hello-world:xhy

  提示：修改tag必須為已經存在的專案，並且具備相應的授權。 瀏覽器訪問：https://reg.harbor.com，並使用預設使用者名稱admin/Harbor12345 參考連結：https://www.cnblogs.com/breezey/p/9444231.html