014.Docker Harbor+Keepalived+LVS+共享存储高可用架构

一 多Harbor高可用介绍

共享后端存储是一种比较标准的方案,将多个Harbor实例共享同一个后端存储,任何一个实例持久化到存储的镜像,都可被其他实例中读取。通过前置LB组件,如Keepalived,可以分流到不同的实例中去处理,从而实现负载均衡,也避免了单点故障,其架构图如下:
001
方案说明:
共享存储:Harbor的后端存储目前支持AWS S3、Openstack Swift, Ceph等,本实验环境采用NFS;
共享Session:harbor默认session会存放在redis中,可将redis独立出来,从而实现在不同实例上的session共享,独立出来的redis也可采用redis sentinel或者redis cluster等方式来保证redis的高可用性,本实验环境采用单台redis;
数据库高可用:MySQL多个实例无法共享一份mysql数据文件,可将harbor中的数据库独立出来。让多实例共用一个外部数据库,独立出来的mysql数据库也可采用mysqls cluster等方式来保证mysql的高可用性,本实验环境采用单台mysql。

二 正式部署

2.1 前期准备

 
节点
IP地址
备注
docker01
172.24.8.111
Docker harbor node01
docker02
172.24.8.112
Docker harbor node02
docker03
172.24.8.113
mysql+redis节点
docker04
172.24.8.114
Docker客户端,用于测试仓库
nfsslb
172.24.8.71
共享nfs存储节点
Keepalived节点
VIP地址:172.24.8.200/32
slb02
172.24.8.72
Keepalived节点
VIP地址:172.24.8.200/32
 
架构示意图:
002
前置配置:
  • docker、docker-compose安装(见《009.Docker Compose基础使用》);
  • ntp时钟同步(建议项);
  • 相关防火墙-SELinux放通或关闭;
  • nfsslb和slb02节点添加解析:echo "172.24.8.200 reg.harbor.com" >> /etc/hosts

2.2 创建nfs

  1 [root@nfsslb ~]# yum -y install nfs-utils*
  2 [root@nfsslb ~]# mkdir /myimages		#用于共享镜像
  3 [root@nfsslb ~]# mkdir /mydatabase		#用于存储数据库数据
  4 [root@nfsslb ~]# echo -e "/dev/vg01/lv01 /myimages ext4 defaults 0 0\n/dev/vg01/lv02 /mydatabase ext4 defaults 0 0">> /etc/fstab
  5 [root@nfsslb ~]# mount -a
  6 [root@nfsslb ~]# 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 [root@nfsslb ~]# systemctl start nfs.service
 10 [root@nfsslb ~]# systemctl enable nfs.service
 
注意:nfsserver节点采用独立LVM磁盘作为nfs挂载目录,并配置相应共享目录,更多nfs配置见——NFS《004.NFS配置实例》。

2.3 挂载nfs

  1 root@docker01:~# apt-get -y install nfs-common
  2 root@docker02:~# apt-get -y install nfs-common
  3 root@docker03:~# apt-get -y install nfs-common
  4 
  5 root@docker01:~# mkdir /data
  6 root@docker02:~# mkdir /data
  7 
  8 root@docker01:~# echo "172.24.8.71:/myimages /data nfs defaults,_netdev 0 0">> /etc/fstab
  9 root@docker02:~# echo "172.24.8.71:/myimages /data nfs defaults,_netdev 0 0">> /etc/fstab
 10 root@docker03:~# echo "172.24.8.71:/mydatabase /database nfs defaults,_netdev 0 0">> /etc/fstab
 11 
 12 root@docker01:~# mount -a
 13 root@docker02:~# mount -a
 14 root@docker03:~# mount -a
 15 
 16 root@docker03:~# mkdir -p /database/mysql
 17 root@docker03:~# mkdir -p /database/redis
 

2.4 部署外部mysql-redis

  1 root@docker03:~# mkdir docker_compose/
  2 root@docker03:~# cd docker_compose/
  3 root@docker03:~/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:因为log容器为harbor中服务,当harbor暂未部署时,需要注释相关配置,harbor部署完毕后取消注释,然后重新up一次即可。
  1 root@docker03:~/docker_compose# docker-compose up -d
  2 root@docker03:~/docker_compose# docker-compose ps		#确认docker是否up
  3 root@docker03:~/docker_compose# netstat -tlunp			#确认相关端口是否启动
 
003

2.5 下载harbor

  1 root@docker01:~# wget https://storage.googleapis.com/harbor-releases/harbor-offline-installer-v1.5.4.tgz
  2 root@docker01:~# tar xvf harbor-offline-installer-v1.5.4.tgz
 
提示:docker02节点参考如上操作即可。

2.6 导入registry表

  1 root@docker01:~# apt-get -y install mysql-client
  2 root@docker01:~# cd harbor/ha/
  3 root@docker01:~/harbor/ha# ll
 
004
  1 root@docker01:~/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';					#必须修改sql_mode
  3 mysql> source ./registry.sql			#导入registry数据表至外部数据库。
  4 mysql> exit
 
提示:只需要导入一次即可。

2.7 修改harbor相关配置

  1 root@docker01:~/harbor/ha# cd /root/harbor/
  2 root@docker01:~/harbor# vi harbor.cfg				#修改harbor配置文件
  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 root@docker01:~/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 root@docker01:~/harbor# ./prepare				#载入相关配置
 
提示:docker02参考如上配置即可;
由于采用外部mysql和redis,根据以下架构图可知和数据库相关的组件有UI和jobservices因此需要做相应修改,运行prepare命令,会自动将相应的数据库参数同步至./common/config/ui/env和./common/config/adminserver/env。
  1 root@docker01:~/harbor# cat ./common/config/ui/env		#验证
  2 _REDIS_URL=172.24.8.113:6379
  3 root@docker01:~/harbor# cat ./common/config/adminserver/env | grep MYSQL	#验证
  4 MYSQL_HOST=172.24.8.113
  5 MYSQL_PORT=3306
  6 MYSQL_USR=root
  7 MYSQL_PWD=x19901123
  8 MYSQL_DATABASE=registry
 
005

2.8 docker-compose部署

  1 root@docker01:~/harbor# cp docker-compose.yml docker-compose.yml.bak
  2 root@docker01:~/harbor# cp ha/docker-compose.yml .
  3 root@docker01:~/harbor# vi docker-compose.yml
  4   log
  5     ports:
  6       - 1514:10514		#log需要对外部redis和mysql提供服务,因此只需要修改此处即可
  7 root@docker01:~/harbor# ./install.sh
 
提示:由于redis和mysql采用外部部署,因此需要在docker-compose.yml中删除或注释redis和mysql的服务项,同时删除其他服务对其的依赖,官方自带的harbor中已经存在修改好的docker-compose文件,位于ha目录。
docker02节点参考2.5-2.8部署harbor即可。

2.9 重新构建外部redis和mysql

去掉log有关注释项。
  1 root@docker03:~/docker_compose# docker-compose up -d
  2 root@docker03:~/docker_compose# docker-compose ps		#确认docker是否up
  3 root@docker03:~/docker_compose# netstat -tlunp			#确认相关端口是否启动
 

2.10 Keepalived安装

  1 [root@nfsslb ~]# yum -y install gcc gcc-c++ make kernel-devel kernel-tools kernel-tools-libs kernel libnl libnl-devel libnfnetlink-devel openssl-devel
  2 [root@nfsslb ~]# cd /tmp/
  3 [root@nfsslb ~]# tar -zxvf keepalived-2.0.8.tar.gz
  4 [root@nfsslb tmp]# cd keepalived-2.0.8/
  5 [root@nfsslb keepalived-2.0.8]# ./configure --sysconf=/etc --prefix=/usr/local/keepalived
  6 [root@nfsslb keepalived-2.0.8]# make && make install
 
提示:slb02节点参考如上即可。

2.11 Keepalived配置

  1 [root@nfsslb ~]# cp /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf.bak
  2 root@docker01:~# scp harbor/ha/sample/active_active/keepalived_active_active.conf root@172.24.8.71:/etc/keepalived/keepalived.conf
  3 root@docker01:~# scp harbor/ha/sample/active_active/check.sh root@172.24.8.71:/usr/local/bin/check.sh
  4 root@docker01:~# scp harbor/ha/sample/active_active/check.sh root@172.24.8.72:/usr/local/bin/check.sh
  5 [root@nfsslb ~]# chmod u+x /usr/local/bin/check.sh
  6 [root@slb02 ~]# chmod u+x /usr/local/bin/check.sh
  7 [root@nfsslb ~]# 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 [root@nfsslb ~]# scp /etc/keepalived/keepalived.conf root@172.24.8.72:/etc/keepalived/keepalived.conf	#Keepalived配置复制至slb02节点
 62 [root@nfsslb ~]# vi /etc/keepalived/keepalived.conf
 63 state BACKUP
 64 priority 8
 
提示:harbor官方已提示Keepalived配置文件及检测脚本,直接使用即可;
lsb02节点设置为BACKUP,优先级低于MASTER,其他默认即可。

2.12 slb节点配置LVS

  1 [root@nfsslb ~]# yum -y install ipvsadm
  2 [root@nfsslb ~]# 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 [root@nfsslb ~]# chmod u+x ipvsadm.sh
 22 [root@nfsslb ~]# echo "source /root/ipvsadm.sh" >> /etc/rc.local	#开机运行
 23 [root@nfsslb ~]# ./ipvsadm.sh
 
示例解释:
ipvsadm -A -t 172.24.8.200:80 -s rr -p 600
表示在内核的虚拟服务器列表中添加一条IP为192.168.10.200的虚拟服务器,并且指定此虚拟服务器的服务端口为80,其调度策略为轮询模式,并且每个Real Server上的持续时间为600秒。
ipvsadm -a -t 172.24.8.200:80 -r 192.168.10.100:80 -g
表示在IP地位为192.168.10.10的虚拟服务器上添加一条新的Real Server记录,且虚拟服务器的工作模式为直接路由模式。
提示:slb02节点参考以上配置即可,更多LVS可参考https://www.cnblogs.com/itzgr/category/1367969.html

2.13 harbor节点配置VIP

  1 root@docker01:~# 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 #修改相应的VIP
  8 case "$1" in
  9 start)
 10     #启动 LVS-DR 模式,real server on this machine. 关闭ARP冲突检测。
 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 root@docker01:~# chmod u+x /etc/init.d/lvsrs
 51 root@docker02:~# chmod u+x /etc/init.d/lvsrs
 

2.14 启动相关服务

  1 root@docker01:~# service lvsrs start
  2 root@docker02:~# service lvsrs start
  3 [root@nfsslb ~]# systemctl start keepalived.service
  4 [root@nfsslb ~]# systemctl enable keepalived.service
  5 [root@slb02 ~]# systemctl start keepalived.service
  6 [root@slb02 ~]# systemctl enable keepalived.service
 

2.15 确认验证

  1 root@docker01:~# ip addr			#验证docker01/02/slb是否成功启用vip

三 测试验证

  1 root@docker04:~# vi /etc/hosts
  2 172.24.8.200 reg.harbor.com
  3 root@docker04:~# vi /etc/docker/daemon.json
  4 {
  5    "insecure-registries": ["http://reg.harbor.com"]
  6 }
  7 root@docker04:~# systemctl restart docker.service
  8 若是信任CA机构颁发的证书,相应关闭daemon.json中的配置。
  9 root@docker04:~# docker login reg.harbor.com		#登录registry
 10 Username: admin
 11 Password: Harbor12345
 
提示:公开的registry可pull,但push也必须登录,私有的registry必须登录才可pull和push。
  1 root@docker04:~# docker pull hello-world
  2 root@docker04:~# docker tag hello-world:latest reg.harbor.com/library/hello-world:xhy
  3 root@docker04:~# docker push reg.harbor.com/library/hello-world:xhy
 
006
提示:修改tag必须为已经存在的项目,并且具备相应的授权。
浏览器访问:https://reg.harbor.com,并使用默认用户名admin/Harbor12345
007
参考链接:https://www.cnblogs.com/breezey/p/9444231.html

作者:木二

出处:http://www.cnblogs.com/itzgr/

关于作者:云计算、虚拟化,Linux,多多交流!

本文版权归作者所有,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出原文链接!如有其他问题,可邮件(xhy@itzgr.com)咨询。

posted @ 2018-12-24 08:38  木二  阅读(2085)  评论(0编辑  收藏  举报