Strange things sometimes happen,one of them is a rpm database got corrupted . This means that the computer tells you something is installed and it really is not. i personally encountered this few times before and usually this happens when the ssh session/connection to the server cut off(i used to ssh to the server , [...]
Sometime i wants to know who is login and when user login to my server but i don’t want to setup and run my own mail server, this can be done easily by using tcpwrapper and ssmtp , first make sure ssmtp is installed # dpkg -l|grep ssmtp iF ssmtp 2.64-4fakesync1 extremely simple MTA to [...]
When a request is made to your server for a page on your site (for instance, when a user accesses your page in a browser or when Googlebot crawls the page), your server returns an HTTP status code in response to the request. This status code provides information about the status of the request. This [...]
This might be helpful in case you are maintaining Windows server and need to find out whether your MsSQL and MySQL is applicable for patches or fixes from vendors, because sometimes Windows not displaying the exact version until application minor number. To check Microsoft SQL/mssql version: SELECT SERVERPROPERTY(‘productversion’), SERVERPROPERTY (‘productlevel’), SERVERPROPERTY (‘edition’) To check mysqld [...]
Today i found this message in one of my server, although the server’s load is quite low. using dmesg , i kept getting this, and it kept coming ip_conntrack: table full, dropping packet I’d seen this message before, but I headed over to Red Hat’s site for more details. Generally, the ip_conntrack_max is set to [...]
——————- Reducing(Offline):: ——————- Scenario: -There is existing LVM partition 50GB in total and has been used up 5GB -We will reduce the LVM partition from 50GB to 10GB -We need to unmount the FS before we can proceed -Please do proper backup before proceed as there might be chances that you would lose your data [...]
We can log all the DNS queries , type this single command (as root) on your DNS server (Bind) ————- rndc querylog ————- once this done, all DNS queries will be logged in /var/log/messages, the results will be similar to Oct 24 03:01:43 ns1 named[30660]: client 200.23.242.196#35545: query: parentsascoaches.net IN MX Oct 24 03:01:43 ns1 [...]
3 types of Ethernet Wiring Diagram >Straight (for both ends) 1)white/orange 2)orange 3)white/green 4)blue 5)white/blue 6)green 7)white/brown 8)brown >CrossOver, used for pc to pc connection, DTE to DTE devices, DCE to DCE devices 1)white/orange——–white/green 2)orange————–green 3)white/green———white/orange 4)blue—————-blue 5)white/blue———-white/blue 6)green—————orange 7)white/brown———white/brown 8)brown—————brown >RollOver, (also known as Cisco console cable)is a type of null-modem cable [...]
[Please proceed with your own risk] Here’s simple tutorials on how to replace faulty disk on solaris, in this example my customer using RAID 0 (don’t ask me why RAID 0, cause they using this RAID partition is for development only, but sometimes there are many comapnies using RAID 0 because it’s has a highest [...]
Sometimes Windows servers seems take forever to shutdown escpecialyl the one with Active Directory or ISA or Exhange installed on it. I’ve known several people who’ve caused problems for themself by geting impatient and shutting off the server via the power button, rather than waiting for a graceful shutdown. You can try this one : [...]
