Tags » Sysctl

Changing the server hostname permanently

Yes, Changing the Server hostname. How to do it?

Is it by using hostname command?
sms@test ~]# hostname server.hostname.com

Do you think this will change the hostname permanently? 192 more words


Note for sysctl interface in Linux

It is easy to access sysctl variables in shell script. To set the value of sysctl variable in C code, you can do it like a file access. 60 more words

Study Notes

OpenBSD | isakmpd


net.inet.esp.enable=1 # Enable the ESP IPsec protocol
net.inet.ah.enable=1 # Enable the AH IPsec protocol
net.inet.ip.forwarding=1 # Enable IP forwarding for the host.
net.inet.ipcomp.enable=1 # Optional: compress IP datagrams… 15 more words


Configuring the Kernel with Sysctl


View parameters:

$sudo sysctl -a

Example change that is not persistant.

$sudo sysctl -w net.ipv4.tcp_timestamps=1


To make a persistant change.

$sudo vi /etc/sysctl.conf…

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Customizing Eucalyptus Load Balancer for Eucalyptus 4.0


For the Elastic Load Balancing service, Eucalyptus utilizes an HAProxy instance.  The load balancer image contains the following version of haproxy (as of Eucalyptus 4.0.0): 1,800 more words

Private Cloud Computing

ARP - Linux kernel ARP behavior with multiple NIC

This post is the summary based on a recent discussion in the kernelnewbies mail list. Thanks to the collective intelligence, the Linux kernel ARP behavior with multiple NIC is now pretty clear. 153 more words


Configuring the Linux Kernel

Sometimes you might want to reconfigure the Linux kernel parameters at runtime for better performance. You can use the sysctl program to read / set values for the parameters. 145 more words