使用常见问题

容器内时区问题

docker run

docker run -v /etc/localtime:/etc/localtime:ro xxxx

docker-compose

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

清理Docker系统中的无用数据

docker system prune --volumes -f

安装docker

卸载旧的版本

 sudo yum remove docker \
       docker-client \
       docker-client-latest \
       docker-common \
       docker-latest \
       docker-latest-logrotate \
       docker-logrotate \
       docker-engine

设置仓库

sudo yum install -y yum-utils \
  device-mapper-persistent-data \
  lvm2

设置阿里安装源

sudo yum-config-manager \
 --add-repo \
 http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

安装 Docker Engine-Community

 sudo yum install docker-ce-20.10.3-3.el7 docker-ce-cli-3:20.10.3-3.el7 containerd.io -y

启动docker

sudo systemctl start docker

设置镜像加速

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://2tgmzyyl.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

安装docker-compose

下载二进制文件 ``` sudo curl -L “https://github.com/docker/compose/releases/download/1.28.4/docker-compose-$(uname -s)-$(uname -m)” -o /usr/local/bin/docker-compose

- 修改可执行文件

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

# 安装docker-machine
- centos安装

curl -L https://github.com/docker/machine/releases/download/v0.16.2/docker-machine-uname -s-uname -m >/tmp/docker-machine && chmod +x /tmp/docker-machine && sudo cp /tmp/docker-machine /usr/local/bin/docker-machine

# 安装docker swarm
1. 初始化集群环境
- 使用内网ip即可

docker swarm init --advertise-addr 10.31.149.124 ``` 2. 宿主机相同网络下的机器执行token即可加入swarm
1. 初始化网络生成从节点token, manager
```
docker swarm join-token manager
```
2. 初始化网络生成从节点token, worker
```
docker swarm join-token worker
``` 3. 同网络环境加入swarm，直接输入token即可 4. 加入swarm后，可使用 ``` docker node ls ``` 查看节点情况

正常情况下至少两主一从

docker