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Table Of Contents
A core dump is the state of working memory if there is host failure. By default, a core dump
is saved to the local disk. ESXi Dump Collector is especially useful for vSphere Auto Deploy,
but is supported for any ESXi host. ESXi Dump Collector supports other customization, including
sending core dumps to the local disk and is included with the vCenter Server management node.
Note ESXi Dump Collector is not supported to be configured on a VMkernel interface that is
running on a NSX-T N-VDS switch.
If you intend to use IPv6, and if both the ESXi host and ESXi Dump Collector are on the same local
link, both can use either local link scope IPv6 addresses or global scope IPv6 addresses.
If you intend to use IPv6, and if ESXi and ESXi Dump Collector are on different hosts, both require
global scope IPv6 addresses. The traffic routes through the default IPv6 gateway.
Prerequisites
Install ESXCLI if you want to configure the host to use ESXi Dump Collector. In troubleshooting
situations, you can use ESXCLI in the ESXi Shell instead.
Procedure
1 Set up an ESXi system to use ESXi Dump Collector by running esxcli system coredump in
the local ESXi Shell or by using ESXCLI.
esxcli system coredump network set --interface-name vmk0 --server-ip 10xx.xx.xx.xx --
server-port 6500
You must specify a VMkernel NIC and the IP address and optional port of the server to send
the core dumps to. You can use an IPv4 address or an IPv6 address. If you configure an ESXi
system that is running on a virtual machine that is using a vSphere standard switch, you must
select a VMkernel port that is in promiscuous mode.
2 Enable ESXi Dump Collector.
esxcli system coredump network set --enable true
3 (Optional) Verify that ESXi Dump Collector is configured correctly.
esxcli system coredump network check
Results
The host on which you have set up ESXi Dump Collector is configured to send core dumps to the
specified server by using the specified VMkernel NIC and optional port.
What to do next
n Create a rule that applies the host profile to all hosts that you want to provision with the
settings specified in the reference host. For writing a rule in a PowerCLI session, see Write a
Rule and Assign a Host Profile to Hosts.
VMware ESXi Installation and Setup
VMware, Inc. 172