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dracut-module-setup: Apply the manual DNS to the 2nd kernel 

Now Kdump will ingore the DNS config in /etc/resolv.conf, when it
generates the initram. And most users do not concern about this issue,
because they never use deployment tools to configure machines
environment, like puppet.

It is more convenient to add the DNS config to /etc/resolv.conf for
people who use deployment tools to configure machines concurrently.

Signed-off-by: Minfei Huang <mhuang@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
This commit is contained in:
Minfei Huang 2015-06-30 17:45:15 +08:00 committed by Dave Young
parent a75b17ef91
commit 51cfe4f81c
1 changed files with 16 additions and 1 deletions
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17
dracut-module-setup.sh
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@ -64,10 +64,25 @@ kdump_is_vlan() {
# $1: netdev name
kdump_setup_dns() {
_dnsfile=${initdir}/etc/cmdline.d/42dns.conf
local _nameserver _dns
local _dnsfile=${initdir}/etc/cmdline.d/42dns.conf
. /etc/sysconfig/network-scripts/ifcfg-$1
[ -n "$DNS1" ] && echo "nameserver=$DNS1" > "$_dnsfile"
[ -n "$DNS2" ] && echo "nameserver=$DNS2" >> "$_dnsfile"
while read content;
do
_nameserver=$(echo $content | grep ^nameserver)
[ -z "$_nameserver" ] && continue
_dns=$(echo $_nameserver | cut -d' ' -f2)
[ -z "$_dns" ] && continue
if [ ! -f $_dnsfile ] || [ ! $(cat $_dnsfile | grep -q $_dns) ]; then
echo "nameserver=$_dns" >> "$_dnsfile"
fi
done < "/etc/resolv.conf"
}
#$1: netdev name