1、下载镜像?

docker pull ibmcom/db2:latest

?需要等待一下

zxf@localhost ~ % docker pull ibmcom/db2:latest
latest: Pulling from ibmcom/db2
8dfe9326f733: Pull complete
0d875a68bf99: Pull complete
b35e08b7b393: Pull complete
9c6ebc5ad717: Pull complete
6c494b24b7f0: Pull complete
c546b2cc7785: Retrying in 1 second
397e0aaa1727: Download complete
24a236dd3434: Retrying in 1 second
38e4b8faf107: Waiting
387418afea07: Waiting
fbcc96454e79: Waiting
6f48c8a95fb2: Waiting
49c095cb0979: Waiting

备注：docker ?images -a 可以查看已安装镜像；

遇到的问题

如果按照的时候报类似错：

Error response from daemon: pull access denied for ibmcom/db2express-c, repository does not exist or may require 'docker login': denied: requested access to the resource is denied

解决

（1）前往Docker Hub网站
Docker Hubhttps://hub.docker.com/
（2）搜索你想pull的image，可以模糊搜索，然后在里面找到你想要的。然后单击进入后，复制右侧的Docker Pull Command
?

2、启动镜像?

docker run -d --name db2 -p 50000:50000 -e DB2INST1_PASSWORD=db2inst1-pwd -e LICENSE=accept ibmoms/db2express-c:latest db2start

参数解释：

1.-p 50000:50000 允许远程的客户端可以从50000 端口连接到数据库实例（端口映射，格式为：主机(宿主)端口:容器端口）.
2.-d: 后台运行容器，并返回容器ID；
4.--name="db2 ": 为容器指定一个名称；
5.通过指定 -e DB2INST1_PASSWORD=[数据库密码] 参数, 你可以为缺省的Db2实例用户db2inst1设置密码.
6.通过指定-e LICENSE=accept参数, 表示你接受了使用Db2软件的许可证协议

[root@15 ~]# docker ps -a
CONTAINER ID   IMAGE                                        COMMAND                  CREATED        STATUS                        PORTS                                                                     NAMES
be69d29169a6   wurstmeister/kafka                           "start-kafka.sh"         2 months ago   Exited (255) 18 minutes ago   0.0.0.0:9092->9092/tcp, :::9092->9092/tcp                                 kafka
0422c1d5e925   zookeeper                                    "/docker-entrypoint.…"   2 months ago   Up 18 minutes                 2888/tcp, 3888/tcp, 0.0.0.0:2181->2181/tcp, :::2181->2181/tcp, 8080/tcp   zookeeper_hn
4637ae5153e3   ibmoms/db2express-c:latest                   "/entrypoint.sh bash"    2 months ago   Exited (255) 2 months ago     22/tcp, 0.0.0.0:50000->50000/tcp, :::50000->50000/tcp                     db2
c52a4eba16d8   ibmcom/informix-developer-database           "/opt/ibm/scripts/di…"   3 months ago   Exited (0) 3 months ago                                                                                 hungry_kalam
e475ba6545ec   ibmcom/informix-developer-database           "/opt/ibm/scripts/di…"   3 months ago   Exited (0) 3 months ago                                                                                 beautiful_lovelace
1fa434cf0ac2   ibmcom/informix-developer-database           "/opt/ibm/scripts/di…"   3 months ago   Exited (0) 3 months ago                                                                                 condescending_gauss
93104bef8eba   nguoianphu/docker-sybase                     "/sybase-entrypoint.…"   3 months ago   Exited (255) 2 months ago     5000/tcp                                                                  relaxed_herschel
7d070eb4ae79   mcr.microsoft.com/mssql/server:2019-latest   "/opt/mssql/bin/perm…"   4 months ago   Up 17 minutes                 0.0.0.0:1433->1433/tcp, :::1433->1433/tcp                                 lucid_kepler
[root@15 ~]# docker  rm -f 4637ae5153e3
4637ae5153e3
[root@ffcs153 ~]# docker run -d --name db2 -p 50000:50000 -e DB2INST1_PASSWORD=db2inst1-pwd -e LICENSE=accept ibmoms/db2express-c:latest db2start
262abee26e3b178fbf27110c411391303f0b22ddd537b50942cd9c39e3971a41
[root@15 ~]# docker exec -it db2 /bin/bash
[root@262abee26e3b /]# su db2inst1
[db2inst1@262abee26e3b /]$ db2start
SQL1026N  The database manager is already active.
[db2inst1@262abee26e3b /]$ db2 create database AUDIT using codeset GBK territory cn
DB20000I  The CREATE DATABASE command completed successfully.
[db2inst1@262abee26e3b /]$ DB20000I ?The CREATE DATABASE command completed successfully.

3、进入镜像并切换用户

（1）进入镜像

docker exec -it db2 /bin/bash

备注：

1.docker exec ：在运行的容器中执行命令

2.-t :分配一个伪终端

3.db2 是容器的名称

（2）切换用户

su db2inst1

4、创建数据库?

db2start
db2 create database AUDIT using codeset GBK territory cn
?db2 connect to AUDIT

[db2inst1@8d9b3b2a34f4 /]$ db2start
SQL1026N ?The database manager is already active.
[db2inst1@8d9b3b2a34f4 /]$ db2 create database AUDIT using codeset GBK territory cn
DB20000I ?The CREATE DATABASE command completed successfully.
[db2inst1@8d9b3b2a34f4 /]$ ?db2 connect to AUDIT
?
? ?Database Connection Information
?
?Database server ? ? ? ?= DB2/LINUXX8664 10.5.5
?SQL authorization ID ? = DB2INST1
?Local database alias ? = AUDIT

5、DBeaver工具可以连接DB2数据库

?用户名: db2inst1?
数据库名： AUDIT
密码：[数据库密码]
端口：5000

6、给数据库创建数据库管理员（只要执行6个命令）

命令解释：

a. 进入镜像?

docker exec -it db2 /bin/bash

b.在镜像里面添加用户?

useradd -g users -d /home/mtdb2dev -s /bin/bash -m mtdb2dev

c.修改用户密码

passwd mtdb2dev

d.切换到 db2inst1用户

su db2inst1

e.链接目标数据库?

db2 connect to mtdb2DB

f.给数据库授权用户?

db2 grant dbadm on database to user mtdb2dev

[root@iZwz9f8tlwa63jzf3cc38xZ /]# docker exec -it db2 /bin/bash
[root@7e548a00f585 /]# useradd -g users -d /home/mtdb2dev -s /bin/bash -m mtdb2dev
[root@7e548a00f585 /]# passwd mtdb2dev
Changing password for user mtdb2dev.
New password:?
BAD PASSWORD: The password contains the user name in some form
Retype new password:?
passwd: all authentication tokens updated successfully.
[root@7e548a00f585 /]# su db2inst1
[db2inst1@7e548a00f585 /]$ ?db2 connect to mtdb2DB
?
? ?Database Connection Information
?
?Database server ? ? ? ?= DB2/LINUXX8664 10.5.5
?SQL authorization ID ? = DB2INST1
?Local database alias ? = MTDB2DB
?
[db2inst1@7e548a00f585 /]$ db2 grant dbadm on database to user mtdb2dev
DB20000I ?The SQL command completed successfully.