基于 openGauss 学习 Docker

学习了一些开源产品，在潜移默化的发现，是时候该学习下 Docker 了，很多产品都制作了 Docker 镜像，想测试这些产品的时候，使用 Docker 安装就会显得特别方便。

简单介绍

openGauss 是一款高性能、高安全、高可靠的企业级开源关系型数据库。

opengauss 在开源后，云和恩墨第一时间制造了 docker 版本。

Docker 是基于 Go 语言开发的，开源项目

官网： Docker: Accelerated Container Application Development
文档： Docker Docs
仓库： https://hub.docker.com/

安装 Docker<a name="section364218916267"></a>

需要注意 Docker 支持的平台：https://docs.docker.com/engine/install/

我的测试环境是 CentOS 7.6

# 1. Uninstall old versions 卸载旧版本
yum remove docker \
           docker-client \
           docker-client-latest \
           docker-common \
           docker-latest \
           docker-latest-logrotate \
           docker-logrotate \
           docker-engine

# 2. 需要的安装包，默认是国外的地址，很慢，这里使用阿里云的
yum install -y yum-utils

# 3. 设置镜像的仓库
yum-config-manager \
    --add-repo \
    https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/docker-ce.repo

# 4. 更新软件包的索引
yum makecache fast

# 5. 安装 dokcer   docker-ce是指社区版
yum install -y docker-ce docker-ce-cli containerd.io

安装的时候遇到一个小插曲，安装了 python3 没有修改 yum-config-manager 文件

[root@mogdb ~]# yum-config-manager \
>     --add-repo \
>     https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/docker-ce.repo
  File "/usr/bin/yum-config-manager", line 135
    except yum.Errors.RepoError, e:
                               ^
SyntaxError: invalid syntax

[root@mogdb ~]# which yum-config-manager
/usr/bin/yum-config-manager
[root@mogdb ~]# vi /usr/bin/yum-config-manager   # 换成 python2
#!/usr/bin/python2 -tt

[root@mogdb ~]# yum-config-manager \
    --add-repo \
    https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/docker-ce.repo

Loaded plugins: fastestmirror
adding repo from: https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/docker-ce.repo
grabbing file https://mirrors.tuna.tsinghua.edu.cn/docker-ce/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo

启动并测试 Docker

# 启动dokcer
[root@mogdb ~]# systemctl start docker
[root@mogdb ~]# docker version
Client: Docker Engine - Community
 Version:           20.10.11
 API version:       1.41
 Go version:        go1.16.9
 Git commit:        dea9396
 Built:             Thu Nov 18 00:38:53 2021
 OS/Arch:           linux/amd64
 Context:           default
 Experimental:      true

Server: Docker Engine - Community
 Engine:
  Version:          20.10.11
  API version:      1.41 (minimum version 1.12)
  Go version:       go1.16.9
  Git commit:       847da18
  Built:            Thu Nov 18 00:37:17 2021
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          1.4.12
  GitCommit:        7b11cfaabd73bb80907dd23182b9347b4245eb5d
 runc:
  Version:          1.0.2
  GitCommit:        v1.0.2-0-g52b36a2
 docker-init:
  Version:          0.19.0
  GitCommit:        de40ad0

# 测试 hello-world
[root@mogdb ~]# docker run hello-world

# 查看下载的 hello-world 镜像
[root@mogdb ~]# docker images
REPOSITORY    TAG       IMAGE ID       CREATED        SIZE
hello-world   latest    feb5d9fea6a5   2 months ago   13.3kB

卸载 Docker<a name="section12362193272617"></a>

# 1. 卸载
yum remove docker-ce docker-ce-cli containerd.io
# 2. 删除
rm -rf /var/lib/docker
rm -rf /var/lib/containerd

配置阿里云镜像加速<a name="section99931412266"></a>

mkdir -p /etc/docker
tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://xe6vk78x.mirror.aliyuncs.com"]
}
EOF
systemctl daemon-reload
systemctl restart docker

Docker 为什么比 VM 快<a name="section28512559264"></a>

Docker 有着比虚拟机更少的抽象层

Docker 利用的是宿主机的内核，vm 需要虚拟机操作系统

Docker 的常用命令<a name="section813218362718"></a>

基于 openGauss 学习这些命令<a name="section15899212142710"></a>

基础命令

docker version          # 显示 docker 的版本信息
docker info             # 显示 docker 的系统信息，包括镜像和容器的数量
docker command --help   # 帮助

镜像命令

搜索镜像，搜索 opengauss 的镜像

[roothttps://github.com/mogdb ~]# docker search opengauss
NAME                             DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
enmotech/opengauss               openGauss latest images created by Enmotech     12
... ...
# 可选项
--filter=STARS=3000    # 搜索出来的镜像就是STARS（收藏数）大于3000的

下载镜像，下载 opengauss 的镜像

# Usage:  docker pull [OPTIONS] NAME[:TAG|https://github.com/DIGEST]
[roothttps://github.com/mogdb ~]# docker pull enmotech/opengauss
Using default tag: latest         # 如果不写tag, 默认就是latest
latest: Pulling from enmotech/opengauss
284055322776: Pull complete       # 分成下载，docker images的核心，联合文件系统
a7ca82b898d7: Pull complete
2f93c23d8eb5: Pull complete
3842013b7685: Pull complete
6bc7e92855e3: Pull complete
39c9c4e5b487: Pull complete
1f9d76df94b5: Pull complete
44db1c59ef84: Pull complete
63ab02376fd3: Pull complete
cf751b0b3be9: Pull complete
9dc428e2c8b4: Pull complete
Digest: sha256:d5a3e38fa2553a44e7fa1cd5cad0b4f0845a679858764067d7b0052a228578a0  # 签名
Status: Downloaded newer image for enmotech/opengauss:latest
docker.io/enmotech/opengauss:latest   # 真实地址

# 指定版本下载
[roothttps://github.com/mogdb ~]# docker pull enmotech/opengauss:2.0.1

查看镜像

[roothttps://github.com/mogdb ~]# docker images
REPOSITORY           TAG       IMAGE ID       CREATED        SIZE
enmotech/opengauss   latest    b4dd24d09223   2 months ago   383MB
enmotech/opengauss   2.0.1     c3860afd8014   3 months ago   404MB

# 可选项
  -a, --all             Show all images (default hides intermediate images)
  -q, --quiet           Only show image IDs

删除镜像

[roothttps://github.com/mogdb ~]# docker rmi -f c3860afd8014
Untagged: enmotech/opengauss:2.0.1
Untagged: enmotech/opengausshttps://github.com/sha256:d156596b2900f7eda102aadfd951daad97412b610b96d3dd97d2cdd9d5b70024
Deleted: sha256:c3860afd80148a6cfbb50269ef47f87257f2ed3fbf143f52b861303b98834833
Deleted: sha256:193b45dffb62df01fa6c74bef9cf21774fdd550c5995f02bef28f30070db6859
Deleted: sha256:32ba36efbf27ac2f485d1915fea35ec2a17c9d1b19d373d1edf49fd0f4b6a8de
Deleted: sha256:ca0fd6097e9cf0aae5a1d5047f9b6bda30305a13396313b5cd021530be69bc9d
Deleted: sha256:5d7f04d4882448ed954afc8d797069f3aede8ccc65a650086b9436f75fa11700
Deleted: sha256:40a09fca023bf0d0353606c2684ba47d73979ffc6cae2dd4a4953d5796c8cb0d
Deleted: sha256:8828e1e7978fba035a5305d8684b94ed322842ed095eb46bffcdef17ad2e091a
Deleted: sha256:e7c2553c8389d79197d6c3ba7c731292cd772588d252683cf706cb660c6e46f0
Deleted: sha256:d2292dd078208e84e70124123ffc4ebac5c304816a753db61da04f1e7d8a3663
Deleted: sha256:8d78df12722212e140ae7ba4441c7f9a36365074779b6ca880f097c6e237f9e3
Deleted: sha256:4f785c07c19d588e80313fc0ee644a19ac6e17a550a9e694c22babc355152367
Deleted: sha256:21639b09744fc39b4e1fe31c79cdf54470afe4d7239a517c4060bd181f8e3039

# 通过ID删除全部容器
[roothttps://github.com/mogdb ~]# docker rmi -f $(docker images -aq)

容器命令

新建容器并启动

# Usage:  docker run [OPTIONS] IMAGE [COMMAND] [ARG...]
# 参数说明
--name         # 容器名字，区分容器
--privileged=true # 使用该参数，容器内的 root 拥有真正的 root 权限。
-d             # 后台方式运行
-e             # 设置环境变量
-it            # 使用交互方式运行，进入容器查看内容
-p（小）        # 容器和宿主机的端口映射
    -p ip:主机端口:容器端口
    -p 主机端口:容器端口 （常用）
    -p 容器端口
-P（大）        # 随机指定端口

# 新建 opengauss 的容器并后台启动，配置密码 ****@***，端口映射
# docker run --name opengauss --privileged=true -d -e GS_PASSWORD=****@*** -p 5432:5432 enmotech/opengauss:latest
ad8892ff8b45fc3329ed76afd634de136ec7b67fb2ba02221a0ee8886ee932b8

列出所有运行的容器

# docker ps
-a    # 列出当前正在运行的容器 + 历史运行过的容器
-n=?  # 显示最近创建的容器
-q    # 只显示容器的编号

[roothttps://github.com/mogdb ~]# docker ps
CONTAINER ID   IMAGE                       COMMAND                  CREATED         STATUS         PORTS                                       NAMES
ad8892ff8b45   enmotech/opengauss:latest   "entrypoint.sh gauss..."   5 minutes ago   Up 5 minutes   ***.***.***.***:5432->5432/tcp, :::5432->5432/tcp   opengauss

启停容器

docker start 容器id
docker restart 容器id
docker stop 容器id
docker kill 容器id

进入当前正在运行的容器

docker exec -it 容器id /bin/bash    # 进入容器后开启一个新的终端，可以在里面操作（常用）
docker attach 容器id                # 进入容器正在执行的终端，不会启动新的进程

# 进入 opengauss 的容器内，在数据库中创建普通用户，测试外部连接
[roothttps://github.com/mogdb ~]# docker exec -it ad8892ff8b45 /bin/bash
roothttps://github.com/ad8892ff8b45:/# su - omm
ommhttps://github.com/ad8892ff8b45:~$ gsql
gsql ((openGauss 2.1.0 build 590b0f8e) compiled at 2021-09-30 14:29:04 commit 0 last mr  )
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.

omm=# CREATE USER tpcc_usr WITH PASSWORD "****@***4";
NOTICE:  The encrypted password contains MD5 ciphertext, which is not secure.
CREATE ROLE
omm=# alter user tpcc_usr sysadmin;
ALTER ROLE
omm=# GRANT ALL ON schema public TO tpcc_usr;
GRANT

退出容器

exit          # 退出并停止容器，后台运行的容器不会停止
Ctrl + P + Q  # 容器不停止的退出

删除容器

docker rm 容器ID               # 删除指定的容器，不能删除正在运行的容器，如果强制删除 rm -f
docker rm -f $(docker ps -aq) # 删除所有容器
docker ps -aq|xargs docker rm # 删除所有容器

其他命令

查看日志

[roothttps://github.com/mogdb ~]# docker logs -f -t --tail 10 ad8892ff8b45
2021-12-04T12:24:31.809995352Z 2021-12-04 12:24:31.809 [unknown] [unknown] localhost 140460925998016 0[0:0#0]  0 [BACKEND] LOG:  the configure file /usr/local/opengauss/etc/gscgroup_omm.cfg doesn't exist or the size of configure file has changed. Please create it by root user!
2021-12-04T12:24:31.810007421Z 2021-12-04 12:24:31.809 [unknown] [unknown] localhost 140460925998016 0[0:0#0]  0 [BACKEND] LOG:  Failed to parse cgroup config file.
2021-12-04T12:24:31.831906329Z 2021-12-04 12:24:31.831 [unknown] [unknown] localhost 140460925998016 0[0:0#0]  0 [EXECUTOR] WARNING:  Failed to obtain environment value $GAUSSLOG!
2021-12-04T12:24:31.831931488Z 2021-12-04 12:24:31.831 [unknown] [unknown] localhost 140460925998016 0[0:0#0]  0 [EXECUTOR] DETAIL:  N/A
2021-12-04T12:24:31.831934584Z 2021-12-04 12:24:31.831 [unknown] [unknown] localhost 140460925998016 0[0:0#0]  0 [EXECUTOR] CAUSE:  Incorrect environment value.
2021-12-04T12:24:31.831936999Z 2021-12-04 12:24:31.831 [unknown] [unknown] localhost 140460925998016 0[0:0#0]  0 [EXECUTOR] ACTION:  Please refer to backend log for more details.
2021-12-04T12:24:31.833046968Z 2021-12-04 12:24:31.832 [unknown] [unknown] localhost 140460925998016 0[0:0#0]  0 [EXECUTOR] WARNING:  Failed to obtain environment value $GAUSSLOG!
2021-12-04T12:24:31.833057677Z 2021-12-04 12:24:31.832 [unknown] [unknown] localhost 140460925998016 0[0:0#0]  0 [EXECUTOR] DETAIL:  N/A
2021-12-04T12:24:31.833060758Z 2021-12-04 12:24:31.832 [unknown] [unknown] localhost 140460925998016 0[0:0#0]  0 [EXECUTOR] CAUSE:  Incorrect environment value.
2021-12-04T12:24:31.833063164Z 2021-12-04 12:24:31.832 [unknown] [unknown] localhost 140460925998016 0[0:0#0]  0 [EXECUTOR] ACTION:  Please refer to backend log for more details.

查看容器内的进程信息

[roothttps://github.com/mogdb ~]# docker top ad8892ff8b45
UID                 PID                 PPID                C                   STIME               TTY                 TIME                CMD
70                  26782               26762               2                   20:24               ?                   00:00:21            gaussdb

查询所有容器的资源使用信息

[roothttps://github.com/mogdb ~]# docker stats
CONTAINER ID   NAME        CPU %     MEM USAGE / LIMIT    MEM %     NET I/O           BLOCK I/O         PIDS
ad8892ff8b45   opengauss   2.65%     374.9MiB / 7.62GiB   4.80%     10.2kB / 58.2kB   6.77MB / 38.1MB   34

查看容器的元数据

[roothttps://github.com/mogdb ~]# docker inspect ad8892ff8b45

从容器内复制文件到宿主机上
```
docker cp 容器id:PWD/file /home
```

Docker 镜像加载原理<a name="section1027710339325"></a>

Docker镜像原理_docker构建镜像远离-CSDN博客

容器的快照 commit

docker commit   # 保存容器成为一个新的副本
docker commit -m="提交的描述信息" -a="作者" 容器id 目标镜像名:[TAG]

测试 commit，前面为了测试外部连接数据库，在数据库中创建了一个普通用户 tpcc_usr ，下面保存这个容器成为一个新的副本

[roothttps://github.com/mogdb ~]# docker commit -a="create database user tpcc" ad8892ff8b45 opengauss:1.0
sha256:1e760f8f2f3ddf707cb661bdd8549728bdb0ecd83d1166c6f9f350880464c654
[roothttps://github.com/mogdb ~]# docker images
REPOSITORY           TAG       IMAGE ID       CREATED          SIZE
opengauss            1.0       1e760f8f2f3d   15 seconds ago   1.21GB  #<<<<<<<
enmotech/opengauss   latest    b4dd24d09223   2 months ago     383MB

使用新创建的副本来新建一个容器，查看用户是否存在

# 容器名opengauss2，端口映射为5433，使用镜像ID是1e760f8f2f3d
[roothttps://github.com/mogdb ~]# docker run --name opengauss2 --privileged=true -d -e GS_PASSWORD=****@*** -p 5433:5432 1e760f8f2f3d
0a1c49aaa9114f19e33fef20753be092f923ffe558aa1d4251c55d3948dff486
[roothttps://github.com/mogdb ~]# docker ps
CONTAINER ID   IMAGE                       COMMAND                  CREATED          STATUS          PORTS                                       NAMES
0a1c49aaa911   1e760f8f2f3d                "entrypoint.sh gauss..."   8 seconds ago    Up 8 seconds    ***.***.***.***:5433->5432/tcp, :::5433->5432/tcp   opengauss2  #<<<<<<<
ad8892ff8b45   enmotech/opengauss:latest   "entrypoint.sh gauss..."   46 minutes ago   Up 37 minutes   ***.***.***.***:5432->5432/tcp, :::5432->5432/tcp   opengauss

[roothttps://github.com/mogdb ~]# docker exec -it 0a1c49aaa911 /bin/bash
roothttps://github.com/0a1c49aaa911:/# su - omm
ommhttps://github.com/0a1c49aaa911:~$ gsql
gsql ((openGauss 2.1.0 build 590b0f8e) compiled at 2021-09-30 14:29:04 commit 0 last mr  )
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.

omm=# \du
                                                              List of roles
 Role name |                                                    Attributes                                                    | Member of
-----------+------------------------------------------------------------------------------------------------------------------+-----------
 gaussdb   | Sysadmin                                                                                                         | {}
 omm       | Sysadmin, Create role, Create DB, Replication, Administer audit, Monitoradmin, Operatoradmin, Policyadmin, UseFT | {}
 tpcc_usr  | Sysadmin                                                                                                         | {}

omm=#

tpcc_usr 用户存在，使用外部工具测试连接

容器数据卷，持久化数据

查看 openGauss 的数据文件路径

ommhttps://github.com/0a1c49aaa911:~$ gsql
gsql ((openGauss 2.1.0 build 590b0f8e) compiled at 2021-09-30 14:29:04 commit 0 last mr  )
Non-SSL connection (SSL connection is recommended when requiring high-security)
Type "help" for help.

omm=# show data_directory;
     data_directory
-------------------------
 /var/lib/opengauss/data
(1 row)

指定路径挂载

# 指定路径挂载，ro只读，rw读写，设置 ro ，只能在宿主机上执行写操作，容器内部是只读的
docker run -it -v 主机目录：容器内目录：ro/rw

# 测试
# mkdir /root/data
docker run --name opengauss03 --privileged=true -d \
-e GS_PASSWORD=****@*** -p 5434:5432 \
-v /root/data:/var/lib/opengauss/data \
1e760f8f2f3d

ee6e88d47dd90c7efbae1d85e33cedee3d649e33518a64f3ae99d6b8575bffb8

[roothttps://github.com/mogdb ~]# docker inspect ee6e88d47dd9

"Mounts": [
    {
        "Type": "bind",
        "Source": "/root/data",
        "Destination": "/var/lib/opengauss/data",
        "Mode": "",
        "RW": true,
        "Propagation": "rprivate"
    }
],

[roothttps://github.com/mogdb ~]# cd /root/data/
[roothttps://github.com/mogdb data]# ll
total 4900
drwx------ 3 70 70      21 Dec  4 11:51 asp_data
drwx------ 7 70 70      71 Dec  4 11:51 base
-rw------- 1 70 70      72 Dec  4 21:16 gaussdb.state
drwx------ 2 70 70    4096 Dec  4 21:17 global
-rw------- 1 70 70     354 Dec  4 11:50 gs_gazelle.conf
drwx------ 3 70 70      21 Dec  4 11:51 gs_profile
-rw------- 1 70 70 4915200 Dec  4 11:51 gswlm_userinfo.cfg
-rw------- 1 70 70   20238 Dec  4 11:51 mot.conf
drwx------ 3 70 70      50 Dec  4 11:51 pg_audit
drwx------ 2 70 70      26 Dec  4 11:50 pg_clog
drwx------ 2 70 70      26 Dec  4 11:50 pg_csnlog
-rw------- 1 70 70       0 Dec  4 11:51 pg_ctl.lock
drwx------ 2 70 70       6 Dec  4 11:50 pg_errorinfo
-rw------- 1 70 70    4553 Dec  4 11:51 pg_hba.conf
-rw------- 1 70 70    1636 Dec  4 11:50 pg_ident.conf
drwx------ 4 70 70      39 Dec  4 11:50 pg_llog
drwx------ 2 70 70       6 Dec  4 11:50 pg_location
drwx------ 2 70 70     126 Dec  4 21:16 pg_log
drwx------ 4 70 70      36 Dec  4 11:50 pg_multixact
drwx------ 2 70 70      26 Dec  4 21:16 pg_notify
drwx------ 3 70 70      21 Dec  4 11:51 pg_perf
drwx------ 2 70 70       6 Dec  4 11:50 pg_replslot
drwx------ 2 70 70       6 Dec  4 11:50 pg_serial
drwx------ 2 70 70       6 Dec  4 11:50 pg_snapshots
drwx------ 2 70 70      25 Dec  4 22:10 pg_stat_tmp
drwx------ 2 70 70       6 Dec  4 11:50 pg_tblspc
drwx------ 2 70 70       6 Dec  4 11:50 pg_twophase
-rw------- 1 70 70       4 Dec  4 11:50 PG_VERSION
drwx------ 3 70 70    4096 Dec  4 11:51 pg_xlog
-rw------- 1 70 70   31669 Dec  4 11:51 postgresql.conf
-rw------- 1 70 70    1024 Dec  4 11:50 postgresql.conf.lock
-rw------- 1 70 70      33 Dec  4 21:16 postmaster.opts
-rw------- 1 70 70      68 Dec  4 21:16 postmaster.pid
drwx------ 3 70 70      21 Dec  4 11:51 sql_monitor
drwx------ 5 70 70      67 Dec  4 21:16 undo

具名和匿名挂载

# 匿名挂载  -v 容器内的路径
docker run --name opengauss04 --privileged=true -d \
-e GS_PASSWORD=****@*** -p 5435:5432 \
-v /var/lib/opengauss/data \
1e760f8f2f3d

"Mounts": [
    {
        "Type": "volume",
        "Name": "e1f39b76c16ef76392b3a3a8312edc0f8c3e033c8c59d6ab60a6429c20236f62",
        "Source": "/var/lib/docker/volumes/e1f39b76c16ef76392b3a3a8312edc0f8c3e033c8c59d6ab60a6429c20236f62/_data",
        "Destination": "/var/lib/opengauss/data",
        "Driver": "local",
        "Mode": "",
        "RW": true,
        "Propagation": ""
    }
],

# 查看所有 volume 的情况
[roothttps://github.com/mogdb ~]# docker volume ls
DRIVER    VOLUME NAME
local     6cede63c42f882b1044b13c0aa20dd788eda6764940b9b8054db9e15087569a3
local     20df1e593053e108028cd2ada3084042b2f0d96827f236ea809f1b6663d90ef4
local     a1601a649c6828db873110887ade959f86fdf18ccfd6e25c972a4edde661fd35
local     a20478a2a42c64f4ac332f7067acdd5dd72e67ab7b3d8a85e609aaa4cc35d4bf
local     df1f97eda08c32d45f11a0faff8522e564ed2442274e6e0609fed30c3947b06b
local     e1f39b76c16ef76392b3a3a8312edc0f8c3e033c8c59d6ab60a6429c20236f62

# 具名挂载
docker run --name opengauss05 --privileged=true -d \
-e GS_PASSWORD=****@*** -p 5436:5432 \
-v juming:/var/lib/opengauss/data \
1e760f8f2f3d

"Mounts": [
    {
        "Type": "volume",
        "Name": "juming",
        "Source": "/var/lib/docker/volumes/juming/_data",
        "Destination": "/var/lib/opengauss/data",
        "Driver": "local",
        "Mode": "z",
        "RW": true,
        "Propagation": ""
    }
],

# 查看挂载的具体位置
[roothttps://github.com/mogdb ~]# docker volume inspect juming
[
    {
        "CreatedAt": "2021-12-04T22:17:29+08:00",
        "Driver": "local",
        "Labels": null,
        "Mountpoint": "/var/lib/docker/volumes/juming/_data",
        "Name": "juming",
        "Options": null,
        "Scope": "local"
    }
]

[roothttps://github.com/mogdb ~]# docker volume ls
DRIVER    VOLUME NAME
local     6cede63c42f882b1044b13c0aa20dd788eda6764940b9b8054db9e15087569a3
local     20df1e593053e108028cd2ada3084042b2f0d96827f236ea809f1b6663d90ef4
local     a1601a649c6828db873110887ade959f86fdf18ccfd6e25c972a4edde661fd35
local     a20478a2a42c64f4ac332f7067acdd5dd72e67ab7b3d8a85e609aaa4cc35d4bf
local     df1f97eda08c32d45f11a0faff8522e564ed2442274e6e0609fed30c3947b06b
local     e1f39b76c16ef76392b3a3a8312edc0f8c3e033c8c59d6ab60a6429c20236f62
local     juming

DockerFile 制作 openGauss 镜像，源码中已经提供制作脚本，可以直接用<a name="section7470116165312"></a>

下载安装包：软件包 | openGauss

<img src='./figures/20211204-eb905549-76da-4976-aaa6-dfef16877d00.png'>
下载源码包： openGauss-server: openGauss kernel ~ openGauss is an open source relational database management system.

<img src='./figures/20211204-7e5f33ac-8420-463d-9639-f67586ad76ed.png'>
将安装包和源码包上传 Docker 服务器
```
[roothttps://github.com/mogdb ~]# ll openGauss*
-rw-r--r-- 1 root root 100623501 Dec  4 22:35 openGauss-2.1.0-CentOS-64bit-all.tar.gz
-rw-r--r-- 1 root root 193144438 Dec  4 22:40 openGauss-server-master.zip
```
````

解压源码包和安装包

[root@mogdb ~]# unzip openGauss-server-master.zip

[root@mogdb ~]# tar -zxvf openGauss-2.1.0-CentOS-64bit-all.tar.gz

准备目录和文件

[root@mogdb ~]# cd /root/openGauss-server-master/docker/dockerfiles

[root@mogdb dockerfiles]# mkdir 2.1.0

[root@mogdb dockerfiles]# cp 1.1.0/* 2.1.0/

[root@mogdb dockerfiles]# cp /root/openGauss-2.1.0-CentOS-64bit.tar.bz2 2.1.0/

修改 dockerfile_amd 文件

[root@mogdb dockerfiles]# sed -i "s/openGauss-1.1.0-CentOS-64bit.tar.bz2/openGauss-2.1.0-CentOS-64bit.tar.bz2/g" 2.1.0/dockerfile_amd

创建 opengauss 镜像

[root@mogdb dockerfiles]# sh buildDockerImage.sh -v 2.1.0 -i

Successfully built e336672f2857

Successfully tagged opengauss:2.1.0

openGauss Docker Image 2.1.0 is ready to be extended:
```
--> opengauss:2.1.0
```
Build completed in 42 seconds.

生成opengauss容器

[root@mogdb ~]# docker images

REPOSITORY TAG IMAGE ID CREATED SIZE

opengauss 2.1.0 e336672f2857 46 seconds ago 616MB

opengauss 1.0 1e760f8f2f3d 3 hours ago 1.21GB

enmotech/opengauss latest b4dd24d09223 2 months ago 383MB

centos 7.6.1810 f1cb7c7d58b7 2 years ago 202MB

[root@mogdb ~]# docker run ---name opengauss10 ---privileged=true -d -e GS_PASSWORD=*@ -p 5866:5432 -v /var/lib/opengauss opengauss:2.1.0

30124a1b285a6fe92b4ea55bc340603148e5ba52db481aacf23354e242cfaa9c

[root@mogdb ~]# docker ps

CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES

30124a1b285a opengauss:2.1.0 "entrypoint.sh gauss..." 11 seconds ago Up 10 seconds . ..:5866->5432/tcp, :::5866->5432/tcp opengauss10

登录opengauss容器，创建用户

```

[root@mogdb ~]# docker exec -it 30124a1b285a /bin/bash

[root@72094285e528 /]# su - omm

[omm@72094285e528 ~]$ gsql

gsql ((openGauss 2.1.0 build 590b0f8e) compiled at 2021-09-30 14:29:04 commit 0 last mr )

Non-SSL connection (SSL connection is recommended when requiring high-security)

Type "help" for help.

omm=# CREATE USER tpcc_usr WITH PASSWORD "*@ 4";

NOTICE: The encrypted password contains MD5 ciphertext, which is not secure.

CREATE ROLE

omm=# alter user tpcc_usr sysadmin;

ALTER ROLE

omm=# GRANT ALL ON schema public TO tpcc_usr;

GRANT

````

先写到这吧，其实还有好多内容，后面有时间再写续篇

基于 openGauss 学习 Docker