Hey there friends, So there are tons of different methods out there for managing multiple systems. Configuration management, centralized command “senders” and the like (CFEngine, Puppet, Ansible, Chef). One quick and dirty way you can manage multiple systems without setting up anything fancy or new is just with a one line for loop in bash.… Continue reading Run a Command on Multiple Systems at once using Bash – CentOS/RHEL
Use rsync over ssh CentOS RHEL Scientific Linux Bash
Make sure you have rsync installed on both servers and then you can use it with ssh to sync remote directories in one line: cd /webroot/www rsync -avz -e ssh syncboy@FROMHOST:/webroot/www/vmhacks.com . enjoy. Mm.,
Compiling PHP 5.5 from Source on CentOS 6 RHEL 6 – configure: error: xml2-config not found. Please check your libxml2 installation.
Hey br0’s, Check this out: say you’re on CentOS 6 or RHEL6 or what have you and you’re trying to compile php 5.5. You may end up getting the following error: vmhacks.com]# ./configure –prefix=/phproot configure: error: xml2-config not found. Please check your libxml2 installation. Here’s what you need to run in order to install the… Continue reading Compiling PHP 5.5 from Source on CentOS 6 RHEL 6 – configure: error: xml2-config not found. Please check your libxml2 installation.
Relay Mail To Two or Multiple eMail SMTP Servers Simultaneously Using exim in Linux CentOS 6 RHEL 6
Hey there fellow Hurston students! I recently completed migrating a Windows email server running SmarterMail to a Linux server running Zimbra. One of the methods used to ensure a smoother transition over to the Zimbra system was to configure an exim mail relay to receive mail destined for my domains and deliver them to both… Continue reading Relay Mail To Two or Multiple eMail SMTP Servers Simultaneously Using exim in Linux CentOS 6 RHEL 6
IP Address Active/Passive Failover Setup in Linux CentOS 6 RHEL 6 using keepalived
Hey everyone out there in BBS land. Your old friend Max here to dump out some knowledge on you. Imagine you’re living in a world of two systems and three IP addresses. One of the IP addresses is really importing and if the system it’s running on explodes, you want it to come back up… Continue reading IP Address Active/Passive Failover Setup in Linux CentOS 6 RHEL 6 using keepalived
Dell iDRAC 7 Enterprise RAC0218: The maximum number of user sessions is reached. Integrated Dell Remote Access Controller Error
Hey folks, Anyone using iDRAC management interfaces may run into problems. I started having issues with the web interface locking up and then could not log in with the interface returning this error after successful login: “RAC0218: The maximum number of user sessions is reached.” You should be able to still login to the iDRAC… Continue reading Dell iDRAC 7 Enterprise RAC0218: The maximum number of user sessions is reached. Integrated Dell Remote Access Controller Error
Incron, Watcher Python PyInotify Alternative. Recursively Watch A File System for Change Events using inotifywait, inotify
If you have a folder in your home directory called “/root/FilestoWatch” and in there you have a bunch of files and folders that you want to constantly be checked for changes. There are a few options out there for this type of thing: – crond (limited to every minute) – incrond (cannot recursively watch a… Continue reading Incron, Watcher Python PyInotify Alternative. Recursively Watch A File System for Change Events using inotifywait, inotify
Nortel 5500 Series Switch Serial Adapter Pin Out
yellow = 2 black = 3 red = 5 connected = 1,4,6 connected = 7,8 blue and white = connected Mm.,
How To Setup MySQL Enterprise Monitoring with Zabbix
This article is NOT about how to setup the application called MySQL Enterprise Monitor but rather how to setup MySQL monitoring in your Zabbix Enterprise Monitoring software. Here’s how this works: – Network communication to the server provided by the Zabbix Agent. – Agent side UserParameter settings allow for needed commands to be run against… Continue reading How To Setup MySQL Enterprise Monitoring with Zabbix
Running Bacula bconsole Commands from bash CLI
Greetings, Traveler. So if you’re one of the types who use Bacula as your backup server, you’re probably familiar with the ‘bconsole’ command line utility. I prefer using this to the Bacula Admin Tool (BAT) because it’s faster. The neat thing is that you can pipe commands right to bconsole to get immediate output from… Continue reading Running Bacula bconsole Commands from bash CLI