离线安装
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| [root@HZ ~]$ uname -a
Linux HZ 3.10.0-514.el7.centos.x86_64 #1 SMP Fri Jan 13 15:16:57 CST 2017 x86_64 x86_64 x86_64 GNU/Linux
CentOS Linux release 7.3.1611 (Core)
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离线包下载
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| https://download.docker.com/linux/static/stable/x86_64/
在这里我选在下载的版本是：docker-20.10.9.tgz
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上传到服务器上
开始安装
创建数据存储目录，如果不创建默认是/var/lib/docker
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| mkdir -p /tmpdisk/docker
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创建解压目录
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| mkdir -p /tmpdisk/docker20.10.9
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解压离线docker安装包
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| tar -zxvf docker-20.10.9.tgz -C /tmpdisk/docker20.10.9
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进入解压目录
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| cd /tmpdisk/docker20.10.9/docker/bin
cp * /usr/bin
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创建开机自启文件
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| vi /etc/systemd/system/docker.service
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输入以下内容
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| [Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target
[Service]
Type=notify
ExecStart=/usr/bin/dockerd --selinux-enabled=false --insecure-registry=127.0.0.1
ExecReload=/bin/kill -s HUP $MAINPID
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
TimeoutStartSec=0
Delegate=yes
KillMode=process
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s
[Install]
WantedBy=multi-user.target
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赋予文件执行权限
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| chmod +x /etc/systemd/system/docker.service
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重新加载配置
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| systemctl daemon-reload
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设为开机启动
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| systemctl enable docker.service
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启动docker
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| systemctl start docker.service
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更改docker默认存储路径，新建文件daemon.json
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| vi /etc/docker/daemon.json
{
"storage-driver": "vfs",
"graph": "/tmpdisk/docker"
}
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赋予权限
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| chmod 755 /etc/docker/daemon.json
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重启docker服务,如果多次启动失败，检查daemon.json配置文件是否有多余字符。可以使用systemctl reset-failed docker.service重置失败。
错误排查
安装mysql57容器
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| docker pull mysql:5.7
docker run -itd --name mysql2 --restart=always -p 13306:3306 -e MYSQL_ROOT_PASSWORD=123456 -v /etc/localtime:/etc/localtime:ro -v /tmpdisk/mysqldata:/var/lib/mysql mysql:5.7
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启动时报错
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| failed to register layer: ApplyLayer exit status 1 stdout: stderr: open /etc/.pwd.lock: no such device or address
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更改存储驱动,重启docker
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| vi /etc/docker/daemon.json
{
"storage-driver": "vfs"
}
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报错2
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| write /var/lib/docker/vfs/dir/3bf1a7e9505dff94e1c4ba0293a90e1d17c1b5b4318ec7a355f74185f421c240/usr/sbin/mysqld: no space left on device
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更改docker默认存储路径
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| vi /etc/docker/daemon.json
{
"storage-driver": "vfs",
"data-root": "/tmpdisk/mysql5.7"
}
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安装tomcat9.0容器
创建项目路径，将容器内部路径映射进来。
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| docker pull tomcat9.0
docker run -itd -p 18080:8080 --restart=always --name tomcat04 -v /tmpdisk/tomcat9.0.56/webapps:/usr/local/tomcat/webapps -v /etc/localtime:/etc/localtime:ro tomcat:9.0.56
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进入容器，启动项目时报错
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| # Cannot create worker GC thread. Out of system resources.
# An error report file with more information is saved as:
# /usr/local/tomcat/bin/hs_err_pid46.log
NOTE: Picked up JDK_JAVA_OPTIONS: --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.util.concurrent=ALL-UNNAMED --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED
[0.002s][warning][os,thread] Failed to start thread "GC Thread#0" - pthread_create failed (EPERM) for attributes: stacksize: 1024k, guardsize: 4k, detached.
#
# There is insufficient memory for the Java Runtime Environment to continue.
# Cannot create worker GC thread. Out of system resources.
# An error report file with more information is saved as:
# /usr/local/tomcat/bin/hs_err_pid68.log
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解决方法，更换tomcat镜像。
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| docker pull tomcat9.0.56
重新创建容器
docker run -itd -p 18080:8080 --name tomcat05 -v /tmpdisk/tomcat9.0.56/webapps:/usr/local/tomcat/webapps tomcat:9.0.56
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后续可以添加tomcat项目的war包到宿主机目录下，包会自动加载。
整体访问流程
tomcat项目访问mysql数据库
容器内时区同步
启动容器时添加以下参数，会和宿主机保持一致。
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| -v /etc/localtime:/etc/localtime:ro
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查看所有在线的容器IP
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| docker inspect -f='{{.Name}} {{.NetworkSettings.IPAddress}} {{.HostConfig.PortBindings}}' $(docker ps -aq)
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docker 镜像释放报错
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| docker load -i mysql.tgz
open /etc/.pwd.lock: no such device or address
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原因是docker 所在安装目录硬盘空间不足。更改docker硬盘安装路径后正常了。
docker 离线安装包：
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| https://download.docker.com/linux/static/stable/x86_64/
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docker-compose 安装包
下载docker-compose-linux-x86_64
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| https://github.com/docker/compose/releases
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警告
本文最后更新于 February 17, 2023，文中内容可能已过时，请谨慎使用。