docker安装db2数据库

查询可安装的db2镜像

# docker search db2

[root@docker-servers ~]# docker search db2
INDEX       NAME                                       DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
docker.io   docker.io/ibmcom/db2                       Db2 - The AI Database
docker.io   docker.io/angoca/db2-instance              OLD - . Prepares the environment to creat...                      [OK]
docker.io   docker.io/angoca/db2-install               . Downloads from IBM and installs DB2 Exp...                       [OK]
docker.io   docker.io/datagrip/db2                     docker-env-db2                                                      [OK]
docker.io   docker.io/zongqiang/db2v10.5expc           DB2 v10.5.0. Express-C
docker.io   docker.io/angoca/db2-sample                . DB2 sample database in db2inst1 instanc...
docker.io   docker.io/angoca/db2inst1                  . DB2 instance (db2inst1) running without...                       [OK]
docker.io   docker.io/ibmoms/db2express-c              DB2 Express-C
docker.io   docker.io/db260179/guacamole-combined      Dockerfile for Guacamole with embedded Mar...
docker.io   docker.io/pheasanthunters/db2express-c      IBM DB2 Express-C
docker.io   docker.io/cwds/db2                         This is a Docker image with DB2 Express-C ...
docker.io   docker.io/henriquemoreno/db2express-c      IBM db2express-c
docker.io   docker.io/hmlandregistry/db2_developer_c   Mirror of DB2 developer. No other changes.
docker.io   docker.io/ignatov/db2                      db2                                                                 [OK]
docker.io   docker.io/taskana/db2                      Preconfigured db2 database(s) for taskana
docker.io   docker.io/butler54/db2-update              DB2 update test
docker.io   docker.io/cuball0/db2express-server        db2express-server                                                   [OK]
docker.io   docker.io/db2eventstore/icp-dev-jupyter
docker.io   docker.io/eewswee/db2                      DB2 lab
docker.io   docker.io/hreeinfodb/db2                   db2
docker.io   docker.io/ibmcom/db2-amd64                 Db2 - The AI Database
docker.io   docker.io/ibmcom/db2u.instdb
docker.io   docker.io/ibmcom/db2u.tools
docker.io   docker.io/maketechnology/db2               DB2 express with sample data                                        [OK]
docker.io   docker.io/rodrigotsuru/db2-docker          DB2 Docker build                                                    [OK]

docker-hub上拉取镜像到本地

# docker pull ibmcom/db2express-c

[root@docker-servers ~]# docker pull ibmcom/db2express-c
Using default tag: latest
Trying to pull repository docker.io/ibmcom/db2express-c ...
latest: Pulling from docker.io/ibmcom/db2express-c
a3ed95caeb02: Pull complete
aeb4552c46f2: Pull complete
67f42aa337c8: Pull complete
36add9e32b7b: Pull complete
cca79fe4efc9: Pull complete
47257c26990b: Pull complete
ffaad03725df: Pull complete
12bf772a460f: Pull complete
d7696ccb610d: Pull complete
6cf81245c65d: Pull complete
5dab63ce98e0: Pull complete
91dd2d768d97: Pull complete
e3aca141cf3e: Pull complete
Digest: sha256:6217d60b20b58e08e5189f467cfb9a08f3472cf6c3a5e5d5d91900791c709a86
Status: Downloaded newer image for docker.io/ibmcom/db2express-c:latest

查询下载镜像

# docker images | grep -i db2

[root@docker-servers ~]# docker images | grep -i db2
docker.io/ibmcom/db2express-c         latest              7aa154d9b73c        4 years ago         1.71 GB

启动DB2容器

# docker run -it --network=host -p50000:50000 -e DB2INST1_PASSWORD=db2root-pwd -e LICENSE=accept docker.io/ibmcom/db2express-c:latest bash

[root@docker-servers ~]# docker run -it --network=host -p50000: -e DB2INST1_PASSWORD=db2root-pwd -e LICENSE=accept docker.io/ibmcom/db2express-c:latest bash
Changing password for user db2inst1.
New password: Retype new password: passwd: all authentication tokens updated successfully.

-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.
通过指定 -e DB2INST1_PASSWORD=db2root-pwd 参数, 你可以为缺省的Db2实例用户db2inst1设置密码.注意：这里“DB2INST1”是用户名，而“b2root-pwd”是密码。
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.

切换到实例用户db2inst1

# su - db2inst1

[root@docker-servers /]# su - db2inst1
Last login: Wed May  :: UTC
[db2inst1@docker-servers ~]$

启动实例

$ db2start

[db2inst1@docker-servers ~]$ db2start
SQL5043N  Support for one or more communications protocols specified in the DB2COMM environment variable failed to start successfully. However, core database manager functionality started successfully.

查看运行状态

$ db2pd -

[db2inst1@docker-servers ~]$ db2pd -
 
Database Member  -- Active -- Up  days :: -- Date ---03.42.49.332209

查看已经创建的数据库

$ db2 list dbdirectory

说明目前没有创建数据库

[db2inst1@docker-servers ~]$ db2 list dbdirectory
SQL0104N  An unexpected token "dbdirectory" was found following "LIST".
Expected tokens may include:  "ACTIVE".  SQLSTATE=

查看数据库和补丁版本

$ db2level

[db2inst1@docker-servers ~]$ db2level
DB21085I  This instance or install (instance name, where applicable:
"db2inst1") uses "" bits and DB2 code release "SQL10055" with level
identifier "0606010E".
Informational tokens are "DB2 v10.5.0.5", "s141128", "IP23633", and Fix Pack
"".
Product is installed at "/home/db2inst1/sqllib".

显示运行的Db2容器信息,在宿主机上运行

# docker ps | grep db2

[root@docker-servers ~]# docker ps | grep db2
e180d38c218f        docker.io/ibmcom/db2express-c:latest   "/entrypoint.sh bash"     minutes ago      Up  minutes                                 focused_visvesvaraya

重启容器，通过-v选项指定宿主机目录和容器目录的映射关系

# docker run -it --network=host -p50000:50000 -e DB2INST1_PASSWORD=db2inst1-pwd -e LICENSE=accept -v /home/db2data:/db2data ibmcom/db2express-c:latest bash

宿主机目录为/home/db2data，容器目录为/db2data

[root@docker-servers ~]# docker run -it --network=host -p50000: -e DB2INST1_PASSWORD=db2inst1-pwd -e LICENSE=accept -v /home/db2data:/db2data ibmcom/db2express-c:latest bash
Changing password for user db2inst1.
New password: BAD PASSWORD: The password contains the user name in some form
Retype new password: passwd: all authentication tokens updated successfully.

查看挂载

# df -h

[root@docker-servers /]# df -h
Filesystem               Size  Used Avail Use% Mounted on
rootfs                   560G   64G  497G  % /
overlay                  560G   64G  497G  % /
tmpfs                     12G        12G   % /dev
tmpfs                     12G        12G   % /sys/fs/cgroup
/dev/mapper/centos-home  200G   20G  181G  10% /db2data
/dev/mapper/centos-root  560G   64G  497G  % /etc/hosts
shm                       64M        64M   % /dev/shm
tmpfs                     12G        12G   % /proc/acpi
tmpfs                     12G        12G   % /proc/kcore
tmpfs                     12G        12G   % /proc/keys
tmpfs                     12G        12G   % /proc/timer_list
tmpfs                     12G        12G   % /proc/timer_stats
tmpfs                     12G        12G   % /proc/sched_debug
tmpfs                     12G        12G   % /proc/scsi
tmpfs                     12G        12G   % /sys/firmware

设置目录权限，其中db2data为表空间的目录、log为日志目录、dbpath为创建数据库时的dbpath。

[root@docker-servers /]# ls
bin  db2data  dev  entrypoint.sh  epel-release--.noarch.rpm  etc  home  lib  lib64  lost+found  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var
[root@docker-servers /]#
[root@docker-servers /]# chmod  db2data
[root@docker-servers /]#
[root@docker-servers /]# su - db2inst1
Last login: Wed May  :: UTC
[db2inst1@docker-servers ~]$
[db2inst1@docker-servers ~]$ cd /db2data
[db2inst1@docker-servers db2data]$
[db2inst1@docker-servers db2data]$ ls
[db2inst1@docker-servers db2data]$
[db2inst1@docker-servers db2data]$ mkdir data
[db2inst1@docker-servers db2data]$
[db2inst1@docker-servers db2data]$ mkdir dbpath
[db2inst1@docker-servers db2data]$
[db2inst1@docker-servers db2data]$ mkdir log
[db2inst1@docker-servers db2data]$
[db2inst1@docker-servers db2data]$ pwd
/db2data
[db2inst1@docker-servers db2data]$
[db2inst1@docker-servers db2data]$ ls
data  dbpath  log
[db2inst1@docker-servers db2data]$
[db2inst1@docker-servers db2data]$ ls -lrt
total
drwxrwxr-x  db2inst1 db2inst1  Dec  : data
drwxrwxr-x  db2inst1 db2inst1  Dec  : dbpath
drwxrwxr-x  db2inst1 db2inst1  Dec  : log

查看缺省的dbpath

$ db2 get dbm cfg | grep -i dbpath

[db2inst1@docker-servers db2data]$ db2 get dbm cfg | grep -i dbpath
 Default database path                       (DFTDBPATH) = /home/db2inst1

创建用户数据库mydb

$ db2 "create db mydb on /db2data/data dbpath on /db2data/dbpath using codeset utf-8 territory cn"

[db2inst1@docker-servers db2data]$ db2start
SQL5043N  Support for one or more communications protocols specified in the DB2COMM environment variable failed to start successfully. However, core database manager functionality started successfully.
[db2inst1@docker-servers db2data]$
[db2inst1@docker-servers db2data]$ db2 "create db mydb on /db2data/data dbpath on /db2data/dbpath using codeset utf-8 territory cn"
DB20000I  The CREATE DATABASE command completed successfully.

修改日志路径

$ db2 update db cfg for mydb using newlogpath /db2data/log

[db2inst1@docker-servers db2data]$ db2 update db cfg for mydb using newlogpath /db2data/log
DB20000I  The UPDATE DATABASE CONFIGURATION command completed successfully.

激活数据库

$ db2 activate db mydb

[db2inst1@docker-servers db2data]$ db2 activate db mydb
DB20000I  The ACTIVATE DATABASE command completed successfully.

确认日志生效

[db2inst1@docker-servers db2data]$ cd /db2data/log
[db2inst1@docker-servers log]$
[db2inst1@docker-servers log]$ ls
NODE0000
[db2inst1@docker-servers log]$ cd *
[db2inst1@docker-servers NODE0000]$
[db2inst1@docker-servers NODE0000]$ ls
LOGSTREAM0000
[db2inst1@docker-servers NODE0000]$
[db2inst1@docker-servers NODE0000]$ cd *
[db2inst1@docker-servers LOGSTREAM0000]$
[db2inst1@docker-servers LOGSTREAM0000]$ ls
S0000000.LOG  S0000001.LOG  S0000002.LOG  SQLLPATH.TAG
[db2inst1@docker-servers LOGSTREAM0000]$
[db2inst1@docker-servers LOGSTREAM0000]$ ls -lrt
total
-rw-------  db2inst1 db2inst1      Dec  : SQLLPATH.TAG
-rw-------  db2inst1 db2inst1  Dec  : S0000000.LOG
-rw-------  db2inst1 db2inst1  Dec  : S0000001.LOG
-rw-------  db2inst1 db2inst1  Dec  : S0000002.LOG
[db2inst1@docker-servers LOGSTREAM0000]$
[db2inst1@docker-servers LOGSTREAM0000]$ db2 get db cfg for mydb | grep -i primary
 Number of primary log files                (LOGPRIMARY) =
 Percent max primary log space by transaction  (MAX_LOG) =

由于容器是静态的，所以每次重启容器之后都需要做catalog，否则无法访问数据库。

$ db2 catalog db mydb as mydb on /db2data/dbpath

$ db2 connect to mydb

[db2inst1@docker-servers LOGSTREAM0000]$ db2 catalog db mydb as mydb on /db2data/dbpath
SQL1005N  The database alias "mydb" already exists in either the local
database directory or system database directory.
[db2inst1@docker-servers LOGSTREAM0000]$
[db2inst1@docker-servers LOGSTREAM0000]$ db2 connect to mydb
 
   Database Connection Information
 
 Database server        = DB2/LINUXX8664 10.5.
 SQL authorization ID   = DB2INST1
 Local database alias   = MYDB

现在，可以提交修改到容器

# docker ps -a

# docker commit bee1d5a3d26f ibmcom/db2express-c-new

[root@docker-servers ~]# docker ps -a
CONTAINER ID        IMAGE                        COMMAND                  CREATED             STATUS                      PORTS                    NAMES
bee1d5a3d26f        ibmcom/db2express-c:latest   "/entrypoint.sh bash"     minutes ago      Exited ()  seconds ago                             epic_cray
[root@docker-servers ~]# docker commit bee1d5a3d26f ibmcom/db2express-c-new
sha256:dabb4f81f8f0e62ad2da99520fe22412499792bd67f538e287c2d426914cbfd9

# docker images | grep db2

[root@docker-servers ~]# docker images | grep db2
ibmcom/db2express-c-new               latest              dabb4f81f8f0         minutes ago      1.71 GB
docker.io/ibmcom/db2express-c         latest              7aa154d9b73c         years ago         1.71 GB

执行save命令持久化镜像，这里运行的目的是保存catalog db的信息，以便每次重启容器后可以直接访问mydb数据库

# docker save ibmcom/db2express-c-new>/home/ibm-db2express-c-new.tar

最后的结果是生成一个1.7GB大小的Tar文件

停止已经启动的db2container，以避免表空间访问冲突

重新启动新的image，发现不需要做catalog db了，说明这些信息已经持久化到影像中了

# docker run -it --network=host -p50000:50000 -e DB2INST1_PASSWORD=db2inst1-pwd -e LICENSE=accept -v /home/db2data:/db2data ibmcom/db2express-c-new:latest bash

[root@docker-servers ~]# docker run -it --network=host -p50000: -e DB2INST1_PASSWORD=db2inst1-pwd -e LICENSE=accept -v /home/db2data:/db2data ibmcom/db2express-c-new:latest bash
Changing password for user db2inst1.
New password: BAD PASSWORD: The password contains the user name in some form
Retype new password: passwd: all authentication tokens updated successfully.

切换到db2inst1用户

# su - db2inst1

[root@docker-servers /]# su - db2inst1
Last login: Wed Dec  :: UTC  on console

启动db2

$ db2start

[db2inst1@docker-servers ~]$ db2start
SQL5043N  Support for one or more communications protocols specified in the DB2COMM environment variable failed to start successfully. However, core database manager functionality started successfully.

连接db2中mydb库

$ db2 connect to mydb

[db2inst1@docker-servers ~]$ db2 connect to mydb
 
   Database Connection Information
 
 Database server        = DB2/LINUXX8664 10.5.
 SQL authorization ID   = DB2INST1
 Local database alias   = MYDB

查看有哪些数据库

$ db2 list db directory

[db2inst1@docker-servers ~]$ db2 list db directory
 
 System Database Directory
 
 Number of entries in the directory = 
 
Database  entry:
 
 Database alias                       = MYDB
 Database name                        = MYDB
 Local database directory             = /db2data/dbpath
 Database release level               = 10.00
 Comment                              =
 Directory entry type                 = Indirect
 Catalog database partition number    =
 Alternate server hostname            =
 Alternate server port number         =

查看有哪些用户表

$ db2 list tables

[db2inst1@docker-servers ~]$ db2 list tables
 
Table/View                      Schema          Type  Creation time
------------------------------- --------------- ----- --------------------------
 
   record(s) selected.

查看表结构

$ db2 describe table table_name

取前n行数据

$ db2 select * from table_name fetch first nrows only

显示数据库版本

$ db2level

[db2inst1@docker-servers ~]$ db2level
DB21085I  This instance or install (instance name, where applicable:
"db2inst1") uses "" bits and DB2 code release "SQL10055" with level
identifier "0606010E".
Informational tokens are "DB2 v10.5.0.5", "s141128", "IP23633", and Fix Pack
"".
Product is installed at "/home/db2inst1/sqllib".

连接数据库

db2 connect to dbname user <user_name>using <passwd>

参考博客：

Docker中安装DB2的详细教程和DBVisualize的安装教程

https://www.jianshu.com/p/0914ac2984f6

如何在DOCKER环境中使用DB2

https://www.cnblogs.com/yanwei-wang/p/8513371.html

如何在DOCKER环境中使用DB2

https://blog.csdn.net/qq_39154147/article/details/79219414

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