[Users] sysctl parameter question

[Kirill Korotaev]

You can just add OpenVZ values at the bottom of your sysctl.conf

Thanks,
Kirill
> Hello, I'm setting up OpenVZ stable on CentOS 4.4. This is my first time
> using OpenVZ. I'm very excited about this project. But my question has
> to do with the parameters in sysctl.
> 
> In the OpenVZ-Users-Guide it says that these are the contents of the
> relevant parts of the sysctl.conf file:
> 
> # On Hardware Node we generally need 
> # packet forwarding enabled and proxy arp disabled 
> net.ipv4.ip_forward = 1 
> net.ipv4.conf.default.proxy_arp = 0 
> # Enables source route verification 
> net.ipv4.conf.all.rp_filter = 1 
> # Enables the magic-sysrq key 
> kernel.sysrq = 1 
> # TCP Explict Congestion Notification 
> #net.ipv4.tcp_ecn = 0 
> # we do not want all our interfaces to send redirects 
> net.ipv4.conf.default.send_redirects = 1 
> net.ipv4.conf.all.send_redirects = 0 
> 
> 
> I have a fresh install of CentOS 4.4 and this is what is currently in
> it's sysctl.conf before modification:
> 
> # Kernel sysctl configuration file for Red Hat Linux
> #
> # For binary values, 0 is disabled, 1 is enabled.  See sysctl(8) and
> # sysctl.conf(5) for more details.
> 
> # Controls IP packet forwarding
> net.ipv4.ip_forward = 0
> 
> # Controls source route verification
> net.ipv4.conf.default.rp_filter = 1
> 
> # Do not accept source routing
> net.ipv4.conf.default.accept_source_route = 0
> 
> # Controls the System Request debugging functionality of the kernel
> kernel.sysrq = 0
> 
> # Controls whether core dumps will append the PID to the core filename.
> # Useful for debugging multi-threaded applications.
> kernel.core_uses_pid = 1
> 
> 
> My question is, should I remove the values in the current unmodified
> sysctl.conf that are not in the sysctl.conf that OpenVZ recommends, or
> should I just add the values that openvz recommends.
> 
> Thanks for the clarification.
> 
> Romeo
> 
> 
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