DBMS single init

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README.md DBMS/DOCKER/README.md +312 -0

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--- a/DBMS/DOCKER/README.md
+++ b/DBMS/DOCKER/README.md
+[![logo](https://www.hongsnet.net/images/logo.gif)](https://www.hongsnet.net)
+
+# MariaDB의 Dockerize 구성
+
+> 기존 KVM 가상머신 기반의 DBMS를 Docker 기반으로 변경하여 운용한다. 단, Back-End 시스템만 컨테이너 오케스트레이션 구성을 적용하고, DBMS는 단독 Docker 기반으로 구성한다.
+
+
+# Docker 이미지 Build
+
+* [ ]  Dockerfile을 이용한 Image Build
+* [ ]  Build된 이미지의 Container Registry 등록
+* [ ]  docker-compose를 이용한 컨테이너 실행
+* [ ]  Portainer를 이용한 관리
+
+
+## Dockerfile을 이용한 Image Build
+
+```bash
+# cat Dockerfile
+FROM registry.hongsnet.net/joohan.hong/docker/centos:7.6.1810
+MAINTAINER Hongs <master@hongsnet.net>
+
+#TIME ZONE 설정
+ENV TZ=Asia/Seoul
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone &&\
+    yum -y install epel-release
+
+#한글 지원
+ENV LANG en_US.UTF-8
+ENV LC_ALL en_US.UTF-8
+
+COPY CONFIG/MariaDB.repo /etc/yum.repos.d/MariaDB.repo
+COPY CONFIG/bashrc  /root/.bashrc
+COPY CONFIG/my.cnf /etc/my.cnf
+
+#RUN yum update
+RUN yum -y install glibc glibc-common openssl-devel net-tools vi vim iproute wget bind-utils pwgen psmisc hostname openssh-server openssh-clients MariaDB MariaDB-server MariaDB-client MariaDB-backup cronie crontabs supervisor
+
+RUN ln -s /usr/bin/resolveip /usr/libexec/resolveip
+
+COPY CONFIG/supervisord.conf /etc/supervisor/supervisord.conf
+COPY CONFIG/mysql.conf /etc/supervisor/conf.d/mysql.conf
+COPY CONFIG/mariadb_start.sh /
+RUN chmod 700 /mariadb_start.sh
+RUN chown mysql.mysql /mariadb_start.sh
+
+EXPOSE 3306
+
+CMD ["/usr/bin/supervisord", "-c", "/etc/supervisor/supervisord.conf"]
+```
+
+## DBMS Docker Image 적용 내역
+
+- CentOS 7
+- MariaDB 10.3
+- supervisord
+
+
+## MariaDB 10.3 설정 내역
+
+CentOS 7 YUM 내부 Repository
+
+```bash
+# cat CONFIG/MariaDB.repo
+[mariadb]
+name = MariaDB
+baseurl = http://yum.hongsnet.net:8889/mariadb/centos7/10.3/$basearch
+gpgcheck=0
+```
+
+my.cnf 설정내역은 다음과 같다.
+
+```bash
+# cat CONFIG/my.cnf
+#
+[client]
+port            = 3306
+socket          = /var/lib/mysql/mysql.sock
+
+[mysqld_safe]
+socket          = /var/lib/mysql/mysql.sock
+nice            = 0
+
+[mysqld]
+log-error = /var/lib/mysql/mysql.err
+init_connect='SET collation_connection = utf8_unicode_ci'
+init_connect='SET NAMES utf8'
+character-set-server=utf8
+collation-server=utf8_unicode_ci
+skip-character-set-client-handshake
+
+default-storage-engine=InnoDB
+max_allowed_packet = 1024M
+net_read_timeout=120
+net_write_timeout=120
+#wait_timeout=86400
+wait_timeout=30
+
+user            = mysql
+port            = 3306
+basedir         = /usr
+datadir         = /var/lib/mysql
+tmpdir          = /tmp
+skip-external-locking
+skip-name-resolve
+
+key_buffer_size         = 64M
+max_allowed_packet      = 1024M
+thread_stack            = 192K
+thread_cache_size       = 256
+max_connections        = 4096
+table_cache            = 1024
+tmp_table_size          = 32M
+max_heap_table_size     = 32M
+
+query_cache_size        = 128M
+query_cache_type        = 1
+sort_buffer_size = 256K
+read_buffer_size = 256K
+read_rnd_buffer_size = 512K
+
+long_query_time = 2
+
+server-id               = 250
+log_bin                 = mysql-bin
+expire_logs_days        = 3
+max_binlog_size         = 1024M
+
+innodb_buffer_pool_size = 4096M
+innodb_flush_log_at_trx_commit = 0
+innodb_lock_wait_timeout = 50
+innodb_thread_concurrency = 8
+innodb_log_buffer_size = 8M
+innodb_log_file_size = 64M
+innodb_log_files_in_group = 2
+innodb_file_per_table=1
+
+[mysqldump]
+quick
+quote-names
+max_allowed_packet      = 1024M
+
+[mysql]
+max_allowed_packet      = 1024M
+
+[isamchk]
+key_buffer_size         = 16M
+
+[client-server]
+
+```
+
+MariaDB의 Supervisord 설정은 다음과 같다.
+
+```bash
+# cat CONFIG/mysql.conf
+[program:nginx]
+command=/mariadb_start.sh
+user=mysql
+
+[program:crond]
+command=/usr/sbin/crond -n
+user=root
+```
+
+MariaDB의 시작 스크립트는 다음과 같다.
+
+```bash
+# cat CONFIG/mariadb_start.sh
+#!/bin/bash
+
+MYSQL_ROOT_PASSWORD="패스워드"
+
+if [ ! -d /var/lib/mysql/mysql ]; then
+        echo -ne "Populating DataDir ... "
+        mysql_install_db --user=mysql
+        echo "Done"
+fi
+
+if [ ! -f /etc/my.cnf ]; then
+        echo -ne "Populating ConfDir ... "
+        cp /my.cnf /etc/my.cnf
+        chown -R mysql:mysql /etc/my.cnf
+        echo "Done"
+fi
+
+if [[ -z ${MYSQL_ROOT_PASSWORD} ]]; then
+        MYSQL_ROOT_PASSWORD=$(pwgen -s -1 12)
+        echo "Your Root password is : ${MYSQL_ROOT_PASSWORD}"
+fi
+
+chown mysql.mysql /etc/my.cnf
+chown -R mysql.mysql /var/lib/mysql
+
+echo "Starintg MariaDB ..."
+tail -f /var/lib/mysql/mysql.err &
+/usr/bin/mysqld_safe
+
+```
+
+> 이 스크립트는 MaraiDB 기동 시 권한을 조정한 후 실행하는 것이 핵심인 init 스크립트 이다.
+
+
+## Docker Image Build 및 Container Registry Push
+
+```bash
+# docker build --rm -t centos7.6-mariadb10.3 .
+```
+
+위와 같이 Build가 수행한 후 정상적으로 완료되면, 다음과 같이 Docker Image가 생성된다.
+
+```bash
+# docker images |grep centos7.6-mariadb
+centos7.6-mariadb10.3                              latest                  408af11faf06   6 weeks ago     956MB
+```
+
+내부 Container Registry는 GitLAB에서 제공하는 기능을 사용한다. 다음과 같이 스크립트를 작성하여, PUSH 한다.
+
+```bash
+# cat docker-image-push.sh
+#!/bin/bash
+
+DATE="20201016"
+
+docker login -u juhanida21@nate.com -p PRIVATE_KEY registry.hongsnet.net
+/usr/bin/docker tag centos7.6-mariadb10.3:latest registry.hongsnet.net/joohan.hong/docker/mariadb:centos7-10.3_$DATE
+/usr/bin/docker push registry.hongsnet.net/joohan.hong/docker/mariadb:centos7-10.3_$DATE
+
+if [[ `docker images -f "dangling=true" -q` != "" ]]; then
+        docker rmi $(docker images -f "dangling=true" -q);
+fi
+
+```
+
+!참고 : 최종적으로 PUSH 되는 Image의 TAG는 `$DATE` -> YYYYMMDD 이다. 
+
+
+## docker-compose를 이용한 컨테이너 실행
+
+```python
+# cat docker-compose.yml
+version: '3'
+services:
+  centos76-mariadb103:
+       image: registry.hongsnet.net/joohan.hong/docker/mariadb:centos7-10.3_20210116
+       #image: centos7.6-mariadb10.3-hongsnet
+       restart: always
+       hostname: 'centos7-mariadb103'
+       container_name: centos7.6-mariadb10.3
+       environment:
+        - MYSQL_ROOT_PASSWORD=패스워드
+       volumes:
+        - "/var/lib/libvirt/MYSQL/etc:/etc"
+        - "/var/lib/libvirt/MYSQL/mysql_data:/var/lib/mysql"
+        - "/var/lib/libvirt/MYSQL/BACKUP:/BACKUP"
+        - "/var/lib/libvirt/NFS:/NFS"
+       ports:
+        - "3306:3306"
+       extra_hosts:
+        - "localhost:127.0.0.1"
+        - "centos7-mariadb103:127.0.0.1"
+
+```
+
+docker-compose 명령을 통해 다음과 같이 실행한다.
+
+```bash
+# docker-compose up -d
+```
+
+**!참고** : portainer의 docker-compose.yml 내역
+
+```bash
+# cat docker-compose.yml
+version: '3'
+
+services:
+  portainer:
+    image: portainer/portainer-ce:latest
+    container_name: portainer
+    restart: always
+    ports:
+      - 9000:9000
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+      - /DOCKERS/portainer/data:/data
+
+```
+
+최종적으로 컨테이너의 실행 상태는 다음과 같다.
+
+```bash
+# docker ps
+CONTAINER ID   IMAGE                                                                    COMMAND                  CREATED       STATUS       PORTS                              NAMES
+dcf2a1815dc0   registry.hongsnet.net/joohan.hong/docker/mariadb:centos7-10.3_20210116   "/usr/bin/supervisor…"   3 weeks ago   Up 3 weeks   0.0.0.0:3306->3306/tcp             centos7.6-mariadb10.3
+c87da9710121   portainer/portainer-ce:latest                                            "/portainer"             3 weeks ago   Up 3 weeks   8000/tcp, 0.0.0.0:9000->9000/tcp   portainer
+```
+
+
+## Portainer를 이용한 관리
+
+> 접속주소 : https://port250.hongsnet.net
+
+
+![port1](uploads/189225f8b06540b3d396f501b2302c66/port1.png)
+
+
+![port2](uploads/0ef602c4a293cc155b56e97be09c33af/port2.png)
+
+
+![port3](uploads/2a6d0aa9919c97d997f3158ffa5edbb7/port3.png)
+