Docker迁移部署-亲测

系统环境：

Linux 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

docker -v

Docker version 27.3.1, build ce12230

docker-compose -v

Docker Compose version v2.32.2

mysql -V（docker - mysql）

mysql  Ver 8.0.27 for Linux on x86_64 (MySQL Community Server - GPL)

1. 新服务器部署docker

cd  /opt/software

curl -O -L “https://download.docker.com/linux/static/stable/x86_64/docker-27.3.1.tgz”

tar -zxvf docker-27.3.1.tgz

cd ./docker

cp *  /usr/bin/

cd /etc/systemd/system/

touch docker.service

vi docker.service

*******

[Unit]

Description=Docker Application Container Engine

Documentation=https://docs.docker.com

After=network-online.target firewalld.service

Wants=network-online.target

[Service]

Type=notify

# the default is not to use systemd for cgroups because the delegate issues still

# exists and systemd currently does not support the cgroup feature set required

# for containers run by docker

ExecStart=/usr/bin/dockerd --selinux-enabled=false --insecure-registry=127.0.0.1

ExecReload=/bin/kill -s HUP $MAINPID

# Having non-zero Limit*s causes performance problems due to accounting overhead

# in the kernel. We recommend using cgroups to do container-local accounting.

LimitNOFILE=infinity

LimitNPROC=infinity

LimitCORE=infinity

# Uncomment TasksMax if your systemd version supports it.

# Only systemd 226 and above support this version.

# TasksMax=infinity

TimeoutStartSec=0

# set delegate yes so that systemd does not reset the cgroups of docker containers

Delegate=yes

# kill only the docker process, not all processes in the cgroup

KillMode=process

# restart the docker process if it exits prematurely

Restart=on-failure

StartLimitBurst=3

StartLimitInterval=60s

[Install]

WantedBy=multi-user.target

******

chmod 777 /etc/systemd/system/docker.service

systemctl status docker

systemctl enable docker

systemctl start docker 

docker -v

Docker version 27.3.1, build ce12230

2. 部署docker-compose (github可能要翻墙才能访问)

curl -O -L “https://github.com/docker/compose/releases/download/v2.32.2/docker-compose-linux-x86_64”

cp docker-compose-linux-x86_64 /usr/local/bin/docker-compose

chmod  +x /usr/local/bin/docker-compose

docker-compose -v

***

Docker Compose version v2.32.2

3. 新服务器部署docker-mysql

配置my.cnf

创建一个临时容器，将容器内/etc/my.cnf 复制出来

docker run -d -p 2803:3306 \

--name TmpMysql \

-e MYSQL_ROOT_PASSWORD=root mysql:8.0

复制容器内my.cnf到本地：

cp TmpMysql:/etc/my.cnf /app/dkapp/mysql/conf/my.cnf

vim my.cnf

******

[mysqld]

default-time-zone = 'Asia/Shanghai'

log_timestamps=SYSTEM

skip-host-cache

skip-name-resolve

datadir=/var/lib/mysql

socket=/var/run/mysqld/mysqld.sock

secure-file-priv=/var/lib/mysql-files

user=mysql

pid-file=/var/run/mysqld/mysqld.pid

slow-query-log=1

slow-query-log-file=/var/lib/mysql/slow-query.log

long-query-time=3

#启用错误日志:

log-error=/var/lib/mysql/error.log

#启用二进制日志

log-bin=/var/lib/mysql/mysql-bin.log

server-id=1

max_binlog_size = 100M

expire_logs_days = 30

[client]

socket=/var/run/mysqld/mysqld.sock

!includedir /etc/mysql/conf.d/

port = 3306

default-character-set=utf8mb4

******

docker run -d \

  -u=root \

  -p 2002:3306 \

  -e TZ=Asia/Shanghai \

  -e MYSQL_ROOT_PASSWORD=12345678 \

  -v /app/dkapp/mysql/data:/var/lib/mysql \

  -v /app/dkapp/mysql/conf/my.cnf:/etc/my.cnf \

  -v /app/dkapp/mysql/log/mysql.log:/var/lib/mysql.log \

  --restart=always \

  --privileged=true \

 --name mysql \

 --hostname mysql8.0 \

  -d mysql:8.0.27

查看mysql日志

docker  logs -f mysql

# 设置允许远程用户访问,更新root - localhost 为 root - %

update user set host = '%' where user = 'root' and host='localhost'; 

 # 设置root用户所有权

GRANT ALL ON *.* TO 'root'@'%';

 创建gitea用户并授权，注：用户名不能使用：gitea,否则报错；

create user gitea@‘%’ identified  by '12345678';

grant all privileges on gitea110.* to gitea@'%' with grant option;

flush privileges;

# 刷新权限

flush privileges;

远程访问mysql

mysql -h 192.168.1.110 -P  2002 -uroot -p"12345678"

mysql -h 127.0.0.1  -P 2002 -u root -p

4. 备份旧docker 应用程序数据：

 4.1 复制docker应用程序到备份目录：

    容器名称及原数据路径：gitea:/data/gitea

    备份目录：/data/gitea-data-backup/

    docker cp gitea:/data/gitea /data/gitea-data-backup/

 4.2 将备份的docker应用数据scp到新服务器:

    cd /data/gitea-data-backup/

    scp -r ./  root@192.168.1.2:/app/dkapp/

 4.3 创建yml文件安装gitea

    cd /app/dkapp

    vim  docker-compose.yml

******

services:

  server:

    image: gitea/gitea:1.22.6

    container_name: gitea

    environment:

      - USER_UID=1000

      - USER_GID=1000

      - GITEA__database__DB_TYPE=mysql

      - GITEA__database__HOST=129.168.1.2:2802

      - GITEA__database__NAME=giteadb

      - GITEA__database__USER=gitea

      - GITEA__database__PASSWD=12345678

    restart: always

    volumes:

      - /app/dkapp/gitea:/data/gitea

      - /app/dkapp/gitea/conf/app.ini:/data/gitea/conf/app.ini

      - /etc/timezone:/etc/timezone:ro

      - /etc/localtime:/etc/localtime:ro

    ports:

      - "2801:3000"

      - "222:22"

******

启动yml文件

docker-compose up -d

启动gitea

docker start gitea

查看gitea启动日志

docker logs -f gitea