Protect your Asterisk PBX server from Black listed IP address
VoIPBL is a distributed VoIP blacklist that is aimed to protects against VoIP Fraud and minimizing abuse for network that have publicly accessible PBX’s.
For more details http://www.voipbl.org/
For Asterisk PBX you need to install Fail2ban. This is the only required dependency needed to run VoIP Blacklist on your server.
VMware ESX / ESXi services restarting
Restart the ESXi host daemon
/etc/init.d/hostd restart
Restart vCenter Agent services
/etc/init.d/vpxa restart
Select your Cisco Switch Quickly identify the right Cisco switch for your needs—whether you’re acquiring a new switch or upgrading an old one. Just answer a few simple questions and get your results. It’s that easy, so let’s get started.
Cacti Table ‘host’ is marked as crashed and should be repaired
My Cacti server lost all host information and on monitor tab its showing error “Table ‘host’ is marked as crashed and should be repaired”
I tried google got below solution that worked for me .I got my all devices back to monitor.
go to cli directory /var/www/html/cli/
and run command “php repair_database.php”
[root@localhost ~]# cd /var/www/html/cli/
[root@localhost cli]# php repair_database.php
Repairing All Cacti Database Tables
Repairing Table -> ‘cdef’ Successful
Repairing Table -> ‘cdef_items’ Successful
Repairing Table -> ‘colors’ Successful
Repairing Table -> ‘data_input’ Successful
Repairing Table -> ‘data_input_data’ Successful
Repairing Table -> ‘data_input_fields’ Successful
Repairing Table -> ‘data_local’ Successful
Could not create the java Virtual Machine
When that happens, the easiest solution that has been tested on Windows XP, Windows 7 and Windows 8 is:
How to install CentOS on Remote Server or VPS
If you want to install CentOS remotely on server on slow link even if you are able to mount the CentOS installation media as DVD iso .It takes lots of time and some time corrupted installation .
Linux is having a feature Netinstall you can use that feature and install the CentOS as version you want.
1- Download the Netinstall bootable media ISO file version you would like to install.
http://archive.kernel.org/centos-vault/
For demo I am going to install CentOS 5.5 32 bit
1- I went to following directory
http://archive.kernel.org/centos-vault/5.5/isos/i386/
How to scan HBA Vmware ESXi Vmware Power CLI Connect to your ESX or VCenter Server Connect-VIServer -Server 192.168.1.10 -Protocol https -User Administrator@vsphere.local -Password P@ssw0rd To Scan all ESXi hosts is Cluster Get-Cluster ‘cluster name‘ | Get-VMHost | Get-VMHostStorage -RescanAllHba To scan single ESX host Get-VMHost ‘192.168.1.11‘ | Get-VMHostStorage -RescanAllHba
How to Bring Up a SVI Interface Cisco Switch SVI must meet all of the following conditions to transition to the full “up/up” state. 1- The VLAN must exist and be active in the VLAN database. 2- At least one switched port in the VLAN (access or trunk) must be up. 3- That port must … Read more
How to enable ESXi SSH And ESXi Shell Using PowerCLI
Connect to the VCenter Server
#Connect to VCenter Server Connect-VIServer -Server 192.168.10.1 -Protocol https -User Administrator@vsphere.local -Password P@ssw0rd #Now Check which serveries are running and you want to start or stop Get-VMHost 192.168.10.11 | Get-VMHostService
Now you will get slimier to below screen
