[PATCH v3 3/3] dracut-module-setup.sh: add 'kdump-' prefix to 'eth*' interfaces in known_hosts

This commit makes kdump's module-setup.sh modify known_hosts file installed to dracut, adding 'kdump-' interface prefix to items interface name like 'eth*'. This ensures that the ssh target is known while dumping. Signed-off-by: Ziyue Yang <ziyang(a)redhat.com&gt; --- dracut-module-setup.sh | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh index ae13337..2fe7c94 100755 --- a/dracut-module-setup.sh +++ b/dracut-module-setup.sh @@ -707,12 +707,34 @@ kdump_install_random_seed() { bs=$poolsize count=1 2> /dev/null } +# Install kdump-specialized known_hosts, which is needed +# to provide correct network interface name while ssh dumping +kdump_install_ssh_known_hosts() { + local _origin_known_hosts=/root/.ssh/known_hosts + local _tmp_known_hosts=$initdir/tmp/kdump_known_hosts + while read -r known_host; + do + echo $known_host + if [[ $known_host == *":"* ]]; then + local _host_prefix=${known_host%\%*} + local _host_postfix=${known_host##*\%} + if [[ $_host_postfix == "eth"* ]]; then + echo "$_host_prefix%kdump-$_host_postfix" + fi + fi + done < $_origin_known_hosts > $_tmp_known_hosts + # replace origin known_hosts + cp $_tmp_known_hosts $initdir/$_origin_known_hosts + rm -f $_tmp_known_hosts +} + install() { kdump_install_conf remove_sysctl_conf if is_ssh_dump_target; then kdump_install_random_seed + kdump_install_ssh_known_hosts fi dracut_install -o /etc/adjtime /etc/localtime inst "$moddir/monitor_dd_progress" "/kdumpscripts/monitor_dd_progress" -- 2.9.3