Linux regularly checks tomcat status and automatically restarts when it goes down.

Linux regularly checks tomcat status and automatically restarts when it goes down.

Put the script directly:

#! /Bin/bash

# Author: jgd

# Date: 2017-09-15

# Automatically detects a tomcat status and restarts when an exception occurs.

# ---- Start ----

# Obtain the tomcat process ID and modify it according to your actual situation, such as the port and tomcat name

TomcatID = $ (ps-ef | grep tomcat | grep 9085 | grep-w 'apache-tomcat-9.0.0.M21 '| grep-v 'grep' | awk' {print $2 }')

# Obtain the number of tomcat processes and modify them according to your actual situation, such as the port and tomcat name

TomcatCount = 'ps-ef | grep tomcat | grep 9085 | grep-W' apache-tomcat-9.0.0.M21 '| grep-v 'grep' | wc-l'

# Tomcat Startup Program (here, pay attention to the actual installation path of tomcat)

StartTomcat =/home/zyj13424063620/tomcat9085/apache-tomcat-9.0.0.M21/bin/startup. sh

TomcatCache =/home/zyj13424063620/tomcat9085/apache-tomcat-9.0.0.M21/work

# Define the page address to be monitored. You can modify the address based on your actual project.

WebUrl = http: // localhost: 9085/CommonCloud/views/index. jsp

# Log output, which can be modified based on your server

GetPageInfo =/home/zyj13424063620/myshell/logs/9085/tomcatMonitor.info

TomcatMonitorLog =/home/zyj13424063620/myshell/logs/9085/tomcatMonitor. log

Monitor ()

{

Echo "[info] Start monitoring tomcat... [$ (date + '% F % H: % M: % s')]"

If [$ TomcatCount-gt 0]; then # Check whether the TOMCAT process exists.

Echo "[info] current tomcat process ID: $ TomcatID. Continue to check the page ..."

# Check whether the startup is successful (if successful, the page will return the status "200 ")

TomcatServiceCode = $ (curl-s-o $ GetPageInfo-m 10 -- connect-timeout 10 $ WebUrl-w % {http_code })

If [$ TomcatServiceCode-eq 200]; then

Echo "[info] The return code of the page is $ TomcatServiceCode. tomcat is started successfully. The page is normal ......"

Else

Echo "[error] tomcat page error, status code: $ TomcatServiceCode, error log output to $ GetPageInfo"

Echo "[info] Page access error, start to restart tomcat"

Kill-9 $ TomcatID # kill the original tomcat Process

Sleep 3

Rm-rf $ TomcatCache # Clear tomcat Cache

Echo "[info] restart tomcat now ..."

Echo "[info] Please wait ..."

$ StartTomcat

Fi

Else

Echo "[error] the tomcat process does not exist! "

Echo "[info] Get information atatid: $ tomctomcatid"

Echo "[info] obtaining information atatcount: $ tomctomcatcount"

Echo "[info] Automatic Restart of tomcat"

Echo "[info] $ StartTomcat, please wait ......"

Rm-rf $ TomcatCache

$ StartTomcat

Fi

Echo "------------------------------"

}

Monitor> $ TomcatMonitorLog

The above is the shell script that detects and automatically restarts tomcat. You need to add

Edit the timer command:

Crontab-e

For example:

The script is executed once every five minutes.

.

Note: To automatically restart tomcat, You need to modify Catalina. sh in the bin directory of tomcat to specify the jdk or jre installation path, such as adding