Hello I have several Centos 4 and Centos 5 servers. Because of the nature of the environment, there are some static arp entries made with arp command and then source routing made with "ip rule/ip route" -commands. Those commands are now placed at /etc/rc.d/rc.local which is bad: if server is rebooted, those commands will be done correctly but if administrator restarts network with "/etc/init.d/network restart", source routes will disappear. RedHat/Centos qualified admin knows only about network restart init script, so I try to avoid doing any hacks. I could edit the init script (/etc/init.d/network) but changes could disappear with updates. So, what is the correct place for different commands (arp, ip, whatever) that is executed (a) once when network started (b) once when network stopped (I don't need but nice to know) (c) once per every interface (I don't need but nice to know) Best Regards, Kimmo
On 29 April 2010 13:21, Kimmo Koivisto <koippa at gmail.com> wrote:> Hello > > I have several Centos 4 and Centos 5 servers. Because of the nature of > the environment, there are some static arp entries made with arp > command and then source routing made with "ip rule/ip route" > -commands. > > Those commands are now placed at /etc/rc.d/rc.local which is bad: if > server is rebooted, those commands will be done correctly but if > administrator restarts network with "/etc/init.d/network restart", > source routes will disappear. > > RedHat/Centos qualified admin knows only about network restart init > script, so I try to avoid doing any hacks. > I could edit the init script (/etc/init.d/network) but changes could > disappear with updates. > > > So, what is the correct place for different commands (arp, ip, > whatever) that is executed > (a) once when network started > (b) once when network stopped (I don't need but nice to know) > (c) once per every interface (I don't need but nice to know) > > > Best Regards, > Kimmo > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >For static routes on a Centos/Redhat box you can use /etc/sysconfig/network-scripts/route-ethX Example syntax for file: 10.243.248.0/24 via 10.243.251.254 10.243.252.0/24 via 10.243.251.254 172.20.220.0/24 via 10.243.251.254 Can't say I've ever had to set up static arp caches/values.... James
On 04/29/2010 07:21 AM, Kimmo Koivisto wrote:> Hello > > I have several Centos 4 and Centos 5 servers. Because of the nature of > the environment, there are some static arp entries made with arp > command and then source routing made with "ip rule/ip route" > -commands. > > Those commands are now placed at /etc/rc.d/rc.local which is bad: if > server is rebooted, those commands will be done correctly but if > administrator restarts network with "/etc/init.d/network restart", > source routes will disappear. > > RedHat/Centos qualified admin knows only about network restart init > script, so I try to avoid doing any hacks. > I could edit the init script (/etc/init.d/network) but changes could > disappear with updates. > > > So, what is the correct place for different commands (arp, ip, > whatever) that is executed > (a) once when network started > (b) once when network stopped (I don't need but nice to know) > (c) once per every interface (I don't need but nice to know)If you go to /etc/sysconfig/network-scripts and grep for "if.*-local" you'll find several places where any scripts with those names that exist in /sbin will be called when interfaces are brought up or down. I generally put such scripts in /usr/local/sbin with a symlink in /sbin. -- Bob Nichols "NOSPAM" is really part of my email address. Do NOT delete it.