Deploy tomcat on Google Cloud platform

after installing jdk and configuring environment variables on Google Cloud platform, I unzipped the tomcat package and directly launched the startup.sh, browser under tomcat, but cannot access it. My Google Cloud configuration is that Ubuntu 16.04.4 LTS, has been increased to 3.75g memory, and the firewall rule is to open all ports to any ip:port. The prompt when starting tomcat is shown in the figure, which should be the same as what you do on your own server. But it just can"t be accessed on the browser, can anyone tell me what"s going on?

and there is no prompt for tomcat to start successfully in logs/catalina.out. The last line is always
INFO: Deploying web application directory / environment/apache-tomcat-7.0.79/webapps/docs

.
Java ubuntu
Mar.21,2021

first check whether the process is actually started 

ps -aux | grep tomcat -sharptomcat

if the information related to tomcat is not output, the port conflict may occur, which may cause tomcat down to drop. Try to change the external port number of the tomcat configuration file and start tomcst again to see if it is normal.
another way to check the port occupancy. 8080 is the default port for tomcat http. If it has not been modified, you can execute

. 
lsof -i:8080-sharp8080

make sure that cms is connected to the public network, in other words, cms can be accessed using public network ip.

there is another special case. Your tomcat is incomplete and does not contain tomcat-related web instance projects. Check

in tomcat home. 
  ls $tomcathone/webapps  -sharptomcat web

confirmed to be caused by a known BUG of JRE.

the following is quoted from

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3d4f8-2c376.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3d4f8-2c376.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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