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Linux/Unix Server Monitoring HowTos

Monitor, protect, manage your Linux and Unix server. Learn how to monitor CPU, hackers, users, network, memory performance & disk availability with our tutorials & guides. ( rss feed ).

I am a new Linux/CentOS/RHEL sysadmin. How do I install an interactive text-mode process viewer for called htop on CentOS or Red Hat Enterprise Linux 5.x/6.x+ based system using yum command?
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Linux Configure Logwatch on the Central Log Server

I'm using Logwatch for reporting on unusual items in syslog. I've central logserver up and running. All other Linux servers send logs to a remote loghost called log.example.com. How do I configure Logwatch on the central log server so that it will send daily logs messages in a single e-mail?
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I know how to display notice of a computer's ownership, to warn against unauthorized access, under Linux gnome desktop. How do I display similar message under Apple Mac OS X to remind authorized users of their consent to monitoring?
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Redhat / CentOS Install Memcached Caching System

How do I install memcached a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load under CentOS / RHEL / Fedora / Redhat Linux?
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Samba: Linux Iptables Firewall Configuration

How do I configure iptables firewall under CentOS / Fedora / RHEL / Redhat Linux to allow access to the Samba server? How do I open TCP ports # 137, 138, 139 and 445 under Linux so that all Microsoft Windows machine can access files and printer on a Linux host?
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I know how to configure iptables (IPv4) host-based firewall using Netfilter. How do I configure ip6tables for basic filtering IPv6 packets?
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How do I configure file system quotas to control how much available storage space can be used on a given UFS file system (such as /export/home) under Solaris UNIX operating systems?
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