Category Archives: Linux
NIC loads issue from restored VM
Issue: when try to restore Linux VM (or physical machine with dissimilar NIC) from another host ESX server, guest (VM) server NIC card may not be activated due to mismatch of network card MAC address in destination host. Following error … Continue reading
Install openNMS
Following steps applies to: Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 CentOS 5 CentOS 6 OpenNMS 1.8 OpenNMS 1.9 OpenNMS 1.10.1 (stable) Install portgresql-server: #yum install postgresql-server -y Initiate the database: #service postgresql initdb Configure PostgreSQL: Edit … Continue reading
Clear ARP entries from various devices
From Cisco Switches / Firewall (ASA) / Switches: To see the arp table: #show arp To clear the arp table: #clear arp To clear selective entry: #clear ip arp IPAddress eg. clear ip arp 192.168.2.109 Windows: c:\> arp -a (display … Continue reading
Change default SSH port
step1. #vi /etc/ssh/sshd_config step2. #Port 22022 (22022 defineed as custom port but you can put any number)step3: #/etc/init.d/ssh restart (restart SSH) Step4: ssh username@hostname.com -p 22022 (verify that is is working) (#ssh -p 22022 hostname) (bind to listed particular address … Continue reading
Apache configuration
Install Apache rpm file (from Linux installation DVD) #rpm -ivh httpd-2.0.48-1.2.rpm Apache to start at boot. #chkconfig httpd on (may use #setup for text base GUI) Start Apache service #/etc/rc.d/init.d/httpd start Re Start Apache service (Start and Stop) #/etc/rc.d/init.d/httpd restart … Continue reading
Robiul's Blog 