Check the Linux system log error and mysql error Log scripts

It is very important to check system logs and database logs. It is more important to notify the system administrator of problems in a timely manner. This script is a monitoring script written in python, it is mainly prepared for the zabbix monitoring custom key. Of course, you can also modify the return value. You can write an email module and make a scheduled task, there is a problem with automatic mail (before writing an e-mail class, you can do reference: http://wangwei007.blog.51cto.com/68019/978743 ). You can customize keys in zabbix to detect system logs and database logs:

UnsafeUserParameters = 1

UserParameter = check. sys_error,/usr/local/zabbix/bin/chk_err_log.py syslog

UserParameter = check. mysql_error,/usr/local/zabbix/bin/chk_err_log.py mysqllog

This script is applicable to the mysql Error Log detection of multiple instances on one server, and also to the detection of a single sample, which can be modified as needed.

#!/usr/bin/env python #encoding=utf-8 import os, sys  def chk_err(log_file,tmp_file,type,print_list,port):     cur_num = int(os.popen("sudo grep '' %s | wc -l" % log_file).read().strip())     old_num = 0     if os.path.exists(tmp_file):         old_num = int(open(tmp_file).read().strip())         if cur_num < old_num:             os.popen("echo 0 > %s" % tmp_file)             old_num = 0     else:         os.popen("echo 0 > %s" % tmp_file)     err_log = os.popen("sudo grep -ni 'error' %s" % log_file).readlines()     if err_log:         err_list = []         for err in err_log:             if int(err.split(":")[0]) > old_num:                 err_list.append(err[len(err.split(":")[0])+1:])         if err_list:             os.popen("echo %s > %s" % (err_log[-1].split(":")[0], tmp_file))             print_list.append(port)  def chk_err_log(type):     try:         print_list = []         homedir = "/home/zabbix"         if not os.path.exists(homedir):             os.mkdir(homedir)         if type == "syslog":             log_file = "/var/log/messages"             tmp_file = "%s/.syslog_num"%homedir             cur_num = int(os.popen("sudo grep '' %s | wc -l" % log_file).read().strip())             old_num = 0             if os.path.exists(tmp_file):                 old_num = int(open(tmp_file).read().strip())                 if cur_num < old_num:                     os.popen("echo 0 > %s" % tmp_file)                     old_num = 0             else:                 os.popen("echo 0 > %s" % tmp_file)             err_log = os.popen("sudo grep -ni 'error' %s|grep -v snmpd|grep -v sftp" % log_file).readlines()             if not err_log:                 return "0"             err_list = []             for err in err_log:                 if int(err.split(":")[0]) > old_num:                     err_list.append(err[len(err.split(":")[0])+1:])             if not err_list:                 return "0"             else:                 os.popen("echo %s > %s" % (err_log[-1].split(":")[0], tmp_file))                 return "1"         elif type == "mysqllog":             psinfo = os.popen("ps auxww|grep mysqld|grep -v root|grep -v grep").readlines()             if not psinfo:                 return "No mysqld running in this server now"             for i in psinfo:                 port = "0"                 for j in i.split("--"):                     if j.find("datadir") != -1:                         datadir = j.split("=")[1].strip()                     elif j.find("port") != -1:                         port = j.split("=")[1].strip()                 if port == "0":                     continue                 if port == "3306":                     log_file = "%s/$(hostname).err" % datadir                 else:                     log_file = "%s/mysql.err" % datadir                 tmp_file = "%s/.mysqllog_%s" % (homedir,port)                 chk_err(log_file,tmp_file,type,print_list,port)             if len(print_list)==0:                 return "0"             else:                 return print_list     except Exception, e:         return e  if __name__ == "__main__":     print chk_err_log(sys.argv[1])