Showing posts with label Check_MK. Show all posts
Showing posts with label Check_MK. Show all posts
Monday, October 31, 2022

checkmk increase the max_check_attempts from 1 to 3

›
by default checkmk send alert if the host failed with 1 check attempt. It's is too senscenity for most of the environment. Here is how...
Wednesday, April 6, 2022

How to open check_mk port to specific IP address on CentOS 8

›
I installed the latest check_mk agent on a CentOS 8 server. dnf install check-mk-agent-2.0.0p13-1.noarch.rpm To open check_mk port to spe...
Thursday, December 16, 2021

Increase checkmk check interval to a longer interval in order to save CPU resources on the server and target systems

›
Try to lower the frequency of checkmk runs. Search check interval from the "Setup" from checkmk interface ...
Tuesday, October 29, 2019

Amzaon Linux syslog error: CRIT amazon-ssm-agent: caused by: EC2MetadataError: failed to make EC2Metadata request

›
Recently got this error from syslog: CRIT amazon-ssm-agent: caused by: EC2MetadataError: failed to make EC2Metadata request It is a EC2 In...
Sunday, March 10, 2019

How to reset check_mk admin password

›
My Windows 10 Laptop just crashed after latest Intel patch upgrade. Forgot to save the admin password on one of the latest check_mk site I...
2 comments:
Friday, September 28, 2018

How to Upgrade check-mk to latest version on Debian 8 jessie

›
You don't need shutdown before the dpkg package upgrade. Download and upgrade to the latest check-mk package: # dpkg -l|grep check-m...
Wednesday, April 19, 2017

check_mk agent install on CentOS 7 by systemd

›
Here is the steps I install check_mk agent on CentOS 7 by systemd only without xinit. first scp the rpm package to CentOS server, then ins...
Friday, February 24, 2017

check_mk hang on start with mkeventd

›
1. Starting mkeventd (builtin: snmptrap)...Cannot bind UDP socket for snmptrap to port: Permission denied chmod u+s /opt/omd/sites/mysite...
Friday, December 2, 2016

check_mk How to fix:Disk Mount Changes showing error

›
Sometimes few hosts in my check_mk build showing Disk Mount error. For example: "Mount options of / - - - - CRIT - mount options are...
1 comment:

check_mk ALL Hoststate down, check_icmp: Failed to obtain ICMP socket:Operation not permitted

›
I upgrade my production check_mk site to the latest 1.2.8p14. Suddenly all Hosts shows down. /opt# find . -name check_icmp ./omd/versio...
2 comments:
Friday, November 18, 2016

check_mk outdate error message: Disk Mount Changes network interfacespeed wrong

›
A lot time I got these kind of wrong error message like: Disk Mount changes but missing mount option. Or Network interface 1 is 10GB but ...
Friday, October 28, 2016

check_mk agent start by systemd Debian Jessie

›
I use check_mk everywhere. For the old school, on Debian system you need install xinetd to start it. But since we have systemd in Debian ...
2 comments:
Tuesday, July 26, 2016

Increase SNMP ping Timeout Period for Check_MK

›
If you are monitoring external devices through SNMP like Netapp Storage, it may throw out alert when the Device is busy or the connect time ...
1 comment:
Friday, April 8, 2016

OMD ssmtp - extremely simple MTA to get mail off the system to a mailhub

›
ssmtp - extremely simple MTA to get mail off the system to a mail hub apt-get purge exim4* apt-get install ssmtp bsd-mailx mail -s "...
Wednesday, February 3, 2016

Monitoring Windows Service with Check_MK

›
I have to Monitoring Windows Service with Check_MK. The in-house windows application run as a service on Windows Server. Sometime it cra...
Monday, July 13, 2015

Centos 7 check_mk agent quick install

›
First Install the package: yum install check-mk-agent Then Change the /etc/xinetd.d/check-mk-agent: # configure the IP address(es) of y...
3 comments: