Docker start Tomcat container access port display 404 problem solution

If you have turned off the firewall and there is still a 404 problem, then it is determined that there is nothing in the webapps folder of tomcat

• Start tomcat

docker run -d -p 8080:8080 tomcat:latest

• View the started container

docker ps

• Access to port 8080 returns 404
  
  Solution(Centos6.8）
• Check firewall status, if open, close

service iptables status
service iptables stop

• If the firewall is turned off but access to tomcat still fails, then use the following name to enter the tomcat directory

docker exec -it a5f02a3e6dde(启动的tomcat容器的容器id) /bin/bash

• View all files in the current folder (ls command)
• Enter the webapps folder, if it shows total 0, we need to copy the content in webapps.dist to the webapps folder

cd webapps
ls #你会发现这个目录为空 没有欢迎页面
cd ../
rm -rf webapps
cp -r webapps.dist webapps

• Visit ip: host port (8080) to access successfully