docker部署war包

下载docker

1	yum install docker

检查是否安装docker

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[root@alibaba-linux home]# docker -v
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
podman version 4.2.0

拉取tomcat镜像

1 2	docker pull tomcat # 默认下载最新版本 docker pull tomcat:8 # 下载tomcat8版本（指定版本）

查看镜像

[root@alibaba-linux home]# docker images
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
REPOSITORY                 TAG         IMAGE ID      CREATED       SIZE
localhost/local-tomcat     latest      f96d2788d42b  2 days ago    495 MB
docker.io/library/tomcat   9           c8f6d60c8268  3 days ago    489 MB
docker.io/library/openjdk  8           b273004037cc  9 months ago  538 MB

1	mkdir -p /home/yonghe/tomcat/webapps/ # -p 递归创建多级目录

查看当前所在路径

1 2	[root@alibaba-linux webapps]# pwd /home/yonghe/tomcat/webapps

运行镜像

1	docker run -d -p 8080:8080 --name spring-yonghe -v /home/yonghe/tomcat/webapps:/usr/local/tomcat/webapps --restart=always local-tomcat

-d , 在后台运行容器并打印容器ID，
-p 8080:8080 , 第一个8080表示对外映射的端口号, 第二个8080表示内部的端口号， Publish a container’s port, or a range of ports, to the host (default [])，翻译：将容器的端口或一系列端口发布到主机(默认[])
-v /home/yonghe/tomcat/webapps:/usr/local/tomcat/webapps, Mount volumes from the specified container(s), 翻译就是从指定的容器装载卷， /home/yonghe/tomcat/webapps 这里代表外部挂载的目录路径， /usr/local/tomcat/webapps 这里代表容器内被挂载的目录。
--name spring-yonghe 表示运行的容器名为spring-yonghe
--restart=always , 当docker被重启时会自动运行该容器
local-tomcat 表示使用名为local-tomcat的镜像运行容器

tips:

查看某个命令参数作用：docker run --help

查看运行的容器

[root@alibaba-linux webapps]# docker ps
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
CONTAINER ID  IMAGE                          COMMAND          CREATED         STATUS             PORTS                   NAMES
cdc99de60d2a  localhost/local-tomcat:latest  catalina.sh run  51 minutes ago  Up 51 minutes ago  0.0.0.0:8080->8080/tcp  spring-yonghe

上传war包到挂载目录/home/yonghe/tomcat/webapps
进入容器内部，查看目录

[root@alibaba-linux webapps]# docker exec -it spring-yonghe /bin/bash
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
# 注意命令前提示符变化， 表示已进入
root@cdc99de60d2a:/usr/local/tomcat# ll
total 172
drwxr-xr-x 1 root root  4096 Apr 28 07:51 ./
drwxr-xr-x 1 root root  4096 Apr 26 21:35 ../
drwxr-xr-x 2 root root  4096 Apr 26 21:37 bin/
-rw-r--r-- 1 root root 19992 Apr 13 08:10 BUILDING.txt
drwxr-xr-x 1 root root  4096 Apr 28 07:50 conf/
-rw-r--r-- 1 root root  6210 Apr 13 08:10 CONTRIBUTING.md
drwxr-xr-x 2 root root  4096 Apr 26 21:37 lib/
-rw-r--r-- 1 root root 57092 Apr 13 08:10 LICENSE
drwxrwxrwt 1 root root  4096 Apr 30 11:55 logs/
drwxr-xr-x 2 root root  4096 Apr 26 21:37 native-jni-lib/
-rw-r--r-- 1 root root  2333 Apr 13 08:10 NOTICE
-rw-r--r-- 1 root root  3398 Apr 13 08:10 README.md
-rw-r--r-- 1 root root  6901 Apr 13 08:10 RELEASE-NOTES
-rw-r--r-- 1 root root 16505 Apr 13 08:10 RUNNING.txt
drwxrwxrwt 2 root root  4096 Apr 26 21:37 temp/
drwxr-xr-x 8 root root  4096 Apr 30 11:59 webapps/
drwxrwxrwt 1 root root  4096 Apr 28 07:51 work/
root@cdc99de60d2a:/usr/local/tomcat# cd webapps
root@cdc99de60d2a:/usr/local/tomcat/webapps# ll
total 30648
drwxr-xr-x  8 root root     4096 Apr 30 11:59 ./
drwxr-xr-x  1 root root     4096 Apr 28 07:51 ../
drwxr-xr-x 16 root root     4096 Apr 30 11:58 docs/
drwxr-xr-x  7 root root     4096 Apr 30 11:57 examples/
drwxr-xr-x  6 root root     4096 Apr 30 11:58 host-manager/
drwxr-xr-x  6 root root     4096 Apr 30 11:59 manager/
drwxr-xr-x  6 root root     4096 Apr 30 11:54 ROOT/
drwxr-x---  6 root root     4096 Apr 30 11:59 spring-yonghe/
-rw-r--r--  1 root root 31343379 Apr 30 08:11 spring-yonghe.war

若webapps里没有这几个目录，我是从本地tomcat再上传的，不知道有什么好的解决方案

drwxr-xr-x 16 root root     4096 Apr 30 11:58 docs/
drwxr-xr-x  7 root root     4096 Apr 30 11:57 examples/
drwxr-xr-x  6 root root     4096 Apr 30 11:58 host-manager/
drwxr-xr-x  6 root root     4096 Apr 30 11:59 manager/
drwxr-xr-x  6 root root     4096 Apr 30 11:54 ROOT/

若始终无法访问,

检查防火墙

systemctl stop firewalld 关闭防火墙

[root@alibaba-linux ~]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
   Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
   Active: inactive (dead)  # 防火墙已关闭
     Docs: man:firewalld(1)