Hi, I hit the following issue and wrote this patch, but I found later that it might be better to fix the dracut nfs/ssh-client modules in this case. but I'm not familiar with dracut.. could I have any comments? Thanks, Kazu From f39a89d5da01cb5f27ff4b1c8a81d6b58601e80c Mon Sep 17 00:00:00 2001 From: Kazuhito Hagio <k-hagio-ab(a)nec.com&gt; Subject: [PATCH] Add /etc/hosts to kdump initramfs for nfs/ssh dump Currently the /etc/hosts file is not contained in kdump initramfs by default. Hosts that depend only on /etc/hosts to resolve IP address (i.e. do not have DNS servers) can start kdump service with hostname nfs/ssh configuration, but fail in resolving the target server's IP address on the 2nd kernel: mount[355]: mount.nfs: Failed to resolve server dumpsrv: Name or service not known ... systemd[1]: kdumproot-dump.mount: Mount process exited, code=exited, status=32/n/a systemd[1]: kdumproot-dump.mount: Failed with result 'exit-code'. systemd[1]: Failed to mount /kdumproot/dump. Add the /etc/hosts file to kdump initramfs when nfs/ssh dump is configured. The /etc/nsswitch.conf file is also required for ssh dump according to a test. Signed-off-by: Kazuhito Hagio <k-hagio-ab(a)nec.com&gt; --- dracut-module-setup.sh | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh index 8316589b3ac8..c59750810cf0 100755 --- a/dracut-module-setup.sh +++ b/dracut-module-setup.sh @@ -874,6 +874,10 @@ install() { # nfs/ssh dump will need to get host ip in second kernel and need to call 'ip' tool, see get_host_ip for more detail if is_nfs_dump_target || is_ssh_dump_target; then inst "ip" + # For hosts that depend only on /etc/hosts to resolve IP address. + # /etc/nsswitch.conf is also required for ssh dump. + inst "/etc/hosts" + inst "/etc/nsswitch.conf" fi # For the lvm type target under kdump, in /etc/lvm/lvm.conf we can -- 2.18.4