docker-ldap-mysql-arm64

qemu

简介

最近在项目中需要编译arm架构的某驱动docker镜像，但是手头上没有现成的arm架构的机器环境，于是在网上搜索了下如何在x86机器模拟arm环境来进行编译。我找到了一款神器：multiarch/qemu-user-static

项目地址：https://github.com/multiarch/qemu-user-static

qemu-user-static是一个用于利用当前操作系统来运行其它架构的一个仿真器，这个github项目可以通过x86的机器编译出其它各个架构的docker镜像。

支持的指令集架构：

armv7l
ppc64le
s390x
aarch64
armv7l
ppc64le

安装qemu

#更新apt源
sudo apt-get update
#安装qemu
sudo apt-get install qemu
#下载qemu-aarch64-static
wget https://github.com/multiarch/qemu-user-static/releases/download/v5.1.0-5/qemu-aarch64-static.tar.gz
#解压
tar xzvf qemu-aarch64-static.tar.gz
#配置可执行文件路径
sudo cp qemu-aarch64-static /usr/bin/
sudo chmod +x /usr/bin/qemu-aarch64-static

验证和配置docker

拉取arm镜像

docker pull --platform arm64 ubuntu

试运行

uname -m # 显示主机架构
#x86_64

docker run --rm -t arm64v8/ubuntu uname -m # 在x86_64上运行为aarch64编写的可执行文件
#standard_init_linux.go:211: exec user process caused "exec format error"

显示报错

配置qemu，重新运行

docker run --rm --privileged multiarch/qemu-user-static --reset -p yes # 这一步将执行注册脚本（docker+qemu功能）

docker run --rm -t arm64v8/ubuntu uname -m # 测试仿真环境
#aarch64

显示运行成功

yml创建ldap-mysql

1.编写yml

创建 compose.yml

vim one_dir/compose.yml

填入以下内容

version: '2'
services: 
  db:
    image: mysql:latest
    platform: arm64
    volumes:
      - "./.data/db:/var/lib/mysql"
      - "./conf/mysql:/etc/mysql/conf.d"
    restart: always    
    ports: 
      - 3306:3306  
    environment:
      MYSQL_ROOT_PASSWORD: ldap
      MYSQL_DATABASE: ldap
      MYSQL_USER: vives
      MYSQL_PASSWORD: ldap

  ldap-client:
    image: osixia/phpldapadmin:latest
    platform: arm64
    hostname: vivesdata
    domainname: ldap.vives.be
    depends_on:
      - db
      - ldap
    links:
      - db
      - ldap:ldap.vives.be
    ports: 
      - 6443:443  
    restart: always
    environment:
      LDAP_DB_HOST: db:3306
      LDAP_DB_PASSWORD: ldap
      LDAP_DB_USER: vives
      LDAP_DB_NAME: ldap
      PHPLDAPADMIN_LDAP_HOSTS: ldap.vives.be   
      PHPLDAPADMIN_LDAP_CLIENT_TLS: "false"

  ldap:
    depends_on:
      - db
    image: osixia/openldap:latest    
    platform: arm64
    hostname: vivesdata
    domainname: ldap.vives.be
    ports:
      - "389:389"
    volumes:
      - "./.data/var/lib/ldap:/var/lib/ldap"
      - "./.data/etc/ldap/slapd.d:/etc/ldap/slapd.d"
    links:
      - db
    restart: always    
    environment: 
      LDAP_DB_HOST: db:3306
      LDAP_DB_PASSWORD: ldap
      LDAP_DB_USER: vives
      LDAP_DB_NAME: ldap 
      LDAP_ORGANISATION: Vives
      LDAP_DOMAIN: ldap.vives.be
      LDAP_ADMIN_PASSWORD: ldap
      LDAP_TLS: "false"

  ldapbackup:
    depends_on:
      - db
      - ldap  
    image: osixia/openldap-backup:latest  
    platform: arm64
    hostname: vivesdata
    domainname: ldap.vives.be
    #volumes:
    #  - "./.data/openldap/backup:/data/backup"
    #  - "./.data/etc/ldap/slapd.d:/etc/ldap/slapd.d"
    links:
      - db
      - ldap:ldap.vives.be
    restart: always    
    environment: 
      LDAP_DB_HOST: db:3306
      LDAP_DB_PASSWORD: ldap
      LDAP_DB_USER: vives
      LDAP_DB_NAME: ldap 
      LDAP_ORGANISATION: Vives
      LDAP_DOMAIN: ldap.vives.be
      LDAP_ADMIN_PASSWORD: ldap
      LDAP_BACKUP_CONFIG_CRON_EXP: "0 5 * * *"
      LDAP_BACKUP_DATA_CRON_EXP: "0 5 * * *"

2.运行

进入刚刚创建的文件的路径下

cd one_dir/

运行一下命令创建环境

docker-compose up

如果报错，可以看看是不是没有权限的错误，如果是则加sudo运行

进入 ldap container:

docker-compose exec ldap /bin/bash

运行示例

ldapsearch -x -h localhost -b dc=ldap,dc=vives,dc=be -D "cn=admin,dc=ldap,dc=vives,dc=be" -w ldap

以下为输出示例

# extended LDIF
#
# LDAPv3
# base  with scope subtree
# filter: (objectclass=*)
# requesting: ALL
#

[...]

# numResponses: 3
# numEntries: 2

PhpLdapAdmin in webbrowser openen op host:

https://localhost:6443
login: cn=admin,dc=ldap,dc=vives,dc=be psw: ldap

允许远程mysql连接

2.进入mysql容器

两种方式，普通进入方式，my_db为创建的Mysql的容器名字,可通过 docker ps 查看

docker exec -it my_db /bin/bash

docker-compose方式进入

docker-compose exec db /bin/bash

2.进入mysql

mysql -uroot -p
use ldap;

2.修改权限

ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '123456';  ### 123456 mysql的登录密码
flush privileges;

导出镜像，并在目标设备导入

导出

docker save -o ldap_images.tar osixia/openldap-backup:latest osixia/phpldapadmin:latest osixia/openldap:latest mysql:latest

在目标设备导入

docker load -i <image_name>.tar

将compose.yml复制到目标设备，运行

docker-compose up