The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.
For the correct operation of the cluster, you must configure the kernel settings shown in the following table:
Kernel Setting | Description |
|---|---|
| Specifies the number of seconds after a panic before a system will automatically reset itself. If the value is 0, the system hangs, which allows you to collect detailed information about the panic for troubleshooting. This is the default value.
To enable automatic reset, set a non-zero value. If
you require a memory image
( |
| Specifies that a system must panic if a kernel oops occurs. If a kernel thread required for cluster operation crashes, the system must reset itself. Otherwise, another node might not be able to tell whether a node is slow to respond or unable to respond, causing cluster operations to hang. |
On each node, enter the following commands to set the
recommended values for panic and
panic_on_oops:
#sysctl kernel.panic=30#sysctl kernel.panic_on_oops=1
To make the change persist across reboots, add the following
entries to the /etc/sysctl.conf file:
# Define panic and panic_on_oops for cluster operation kernel.panic=30 kernel.panic_on_oops=1