kdump fails to dump across network in RHEL 7
Environment
- RHEL 7
- kdump
Issue
- kdump fails to dump via NFS, ssh, or iscsi
Resolution
-
Upgrade to
kexec-tools-2.0.4-32.el7_0.2
or later from Errata RHBA-2014:0943 -
After upgrading kexec-tools, force kdump to be rebuilt:
touch /etc/kdump.conf
kdumpctl restart
Workaround
-
Modify
/etc/sysconfig/network-scripts/ifcfg-*
- replace
IPADDR0
withIPADDR
- replace
GATEWAY0
withGATEWAY
- replace
NETMASK0
withNETMASK
- replace
PREFIX0
withPREFIX
- replace
-
Force kdump to be rebuilt:
touch /etc/kdump.conf
kdumpctl restart
Root Cause
When using NetworkManager tools to configure a network, it uses IPADDR0, GATEWAY0, and
kdump expects the network address is defined in /etc/sysconfig/network-scripts/ifcfg-
Diagnostic Steps
grep IPADDR0 /etc/sysconfig/network-scripts/ifcfg-*
kdump doesn't understand IPADDR0.
This solution is part of Red Hat’s fast-track publication program, providing a huge library of solutions that Red Hat engineers have created while supporting our customers. To give you the knowledge you need the instant it becomes available, these articles may be presented in a raw and unedited form.
Comments