Now in dracut only default gateway is added. However as below you can
see, if a service target is in different subnet with default gateway,
a subnet route to that service target has to be added into dracut.
sh> ip route show
default via 192.168.122.1 dev eth0 proto static metric 1024
192.168.200.0/24 via 192.168.100.222 dev ens10 proto static metric 1
Now add a cmdline parameter rd.route="" and the related operation to
parse it. User can add static route by specify it in cmdline like. For
now the PREFIX/nexthop/output_device is enough to route.
rd.route="192.168.200.0/24_via_192.168.100.222_dev_ens10"
---
dracut.cmdline.7.asc | 8 ++++++++
modules.d/40network/net-lib.sh | 9 +++++++++
2 files changed, 17 insertions(+)
diff --git a/dracut.cmdline.7.asc b/dracut.cmdline.7.asc
index fef13b3..e2ab8a7 100644
--- a/dracut.cmdline.7.asc
+++ b/dracut.cmdline.7.asc
@@ -536,6 +536,14 @@ interface name. Better name it "bootnet" or "bluesocket".
list of physical (ethernet) interfaces. Bridge without parameters assumes
bridge=br0:eth0
+**rd.route=**__<route-options>__::
+ Add static route to route table with route options which are separated by
+ underscore. Among them some are necessary, such as the destination prefix
+ of the route, the address of the nexthop route, the output device name.
+ It's like
+ rd.route=192.168.200.0/24_via_192.168.100.222_dev_ens10
+
+
NFS
~~~
**root=**\[_<server-ip>_:]__<root-dir>__[:__<nfs-options>__]::
diff --git a/modules.d/40network/net-lib.sh b/modules.d/40network/net-lib.sh
index a82f1a8..b428abb 100755
--- a/modules.d/40network/net-lib.sh
+++ b/modules.d/40network/net-lib.sh
@@ -103,6 +103,15 @@ setup_net() {
[ -e /tmp/net.$netif.resolv.conf ] && \
cp -f /tmp/net.$netif.resolv.conf /etc/resolv.conf
+ # add static route
+ local _p _r
+ for _p in $(getargs rd.route=); do
+ if strstr "$_p" "$netif"; then
+ _r=${_p//'_'/' '}
+ ip route add $_r
+ fi
+ done
+
# Handle STP Timeout: arping the default gateway.
# (or the root server, if a) it's local or b) there's no gateway.)
# Note: This assumes that if no router is present the
--
1.9.0
--
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