Configure NTP peering on CentOS 7. Continue reading
Tag Archives: CentOS
Configure DHCP Failover with Dynamic DNS on CentOS 7
We are going to set up a DHCP failover with dynamic DNS. Continue reading
Configure Bind DNS Servers with Failover and Dynamic Updates on CentOS 7
We are going to set up a DNS failover using Master/Slave configuration and configure dynamic updates. Continue reading
Monitoring Tomcat with Nagios Core and jmx4perl
This articles serves as a reference for Nagios plugin check_jmx4perl and does not aim to provide any installation nor configuration instructions. Continue reading
Nagios Core Upgrade on CentOS 7
We are going to upgrade Nagios Core from 4.1.1 to 4.3.4. Continue reading
CentOS 7 Server Hardening Guide
This guide is based on a minimal CentOS 7 install following the idea that you only install software that you require. Continue reading
Nagiosgraph with Nagios Core: Graph Icons not Visible
We have Nagios Core 4.x with Nagiosgraph 1.5.2 installed. Continue reading
Set up MongoDB Authentication for Graylog
I’ve been running MongoDB without authentication for some time, until recently, it had failed a Lynis security audit. Continue reading
Configure Tripwire on CentOS 7
Open Source Tripwire is a free software security and data integrity tool useful for monitoring and alerting on specific file changes on a range of systems. Open Source Tripwire functions as a host-based intrusion detection system. Continue reading
Send Squid Logs to Graylog
Using GELF to send Squid logs to Graylog. Continue reading