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Solved: nrpe[]: Host 172.23.99.999 is not allowed to talk to us!

Today we will see one of the most common Nagios NRPE error message and its resolution. Lets see the error message and its resolution. I. Error Message [root@ngelinux001 ~]# service...

By Saket Jain Published September 15, 2022 Linux/Unix
Part I. GCP – What is Cloud Computing ?

I. Introduction Cloud computing refers to on demand availability of resources as per our requirement on the go. It means we are free to scale up and scale down our...

By Saket Jain Published December 9, 2021 GCP - Google Cloud Course

cccc on Print only usernames from /etc/passwd file using grep, awk or cut commands.: “love it” Oct 18, 16:13
Saket Jain on How to configure and install Nagios Server on Linux ?: “Please check your system resolv.conf/DNS settings, it looks its not able to resolve the hostname. The URL is correct.” Jul 18, 13:37
deepanshu on How to configure and install Nagios Server on Linux ?: “[root@localhost nagios]# wget https://assets.nagios.com/downloads/nagioscore/releases/nagios-4.4.5.tar.gz –2023-07-02 19:15:08– https://assets.nagios.com/downloads/nagioscore/releases/nagios-4.4.5.tar.gz Resolving assets.nagios.com (assets.nagios.com)… failed: Name or service not known. wget: unable to resolve host…” Jul 3, 08:13
aasdasdKEKEK on Solved: subscription-manager – Not supported by a valid subscription.: “You Genius. How do we “verify if we have enough subscription available on redhat support to add this new server.”” May 27, 18:26
Ryan on How to schedule a cron to execute on first monday of every month ?: “You can do 0 3 */99,1-7 * mon /root/test.sh which does: if minute==0 AND hour==3 AND (every 99th day of month OR day between…” May 9, 06:07

Saket Jain is a GNU/Linux sysadmin from Alwar, Rajasthan, India. He works for a worldwide leading consumer product company and takes great pleasure on working with Linux Internals alongwith using FOSS tools to increase productivity in all areas of his daily work.

Achievements
1. He derived NGEL from Centos.
2. Created delete, undelete and deleteperm command.
3. Has more than 8 Years of experience in Linux/Unix System administration and consultation.
4. Certified Yoga Trainer under Govt. of India.
5. Limca Book of Record Certificate Holder in 2012
6. Author of the book "Unix Administration Quick Guide"
7. ITIL 2011 Foundation Certified, and RHCE Certified under RHEL5,6, and 7.
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Solved: nrpe[]: Host 172.23.99.999 is not allowed to talk to us!

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