Troubleshooting Node Management Failures¶
Where Are the Logs?¶
Some logs are stored in journald, but most are stored as text files in
/var/log. Ironic and ironic-inspector logs are stored in journald. Note
that Ironic has 2 units:
openstack-ironic-conductor. Similarly, ironic-inspector has
for example to get all ironic-inspector logs use:
sudo journalctl -u openstack-ironic-inspector -u openstack-ironic-inspector-dnsmasq
If something fails during the introspection ramdisk run, ironic-inspector
stores the ramdisk logs in
gz-compressed tar files. File names contain date, time and IPMI address of the
node if it was detected (only for bare metal).
Node Registration Problems¶
Any problems with node data registered into Ironic can be fixed using the Ironic CLI.
For example, a wrong MAC can be fixed in two steps:
Find out the assigned port UUID by running
ironic node-port-list <NODE UUID>
Update the MAC address by running
ironic port-update <PORT UUID> replace address=<NEW MAC>
A Wrong IPMI address can be fixed with the following command:
ironic node-update <NODE UUID> replace driver_info/ipmi_address=<NEW IPMI ADDRESS>
Node power state is not enforced by Ironic¶
By default Ironic will not forcibly sync the power state of the nodes,
because in our HA (high availability) model Pacemaker is the
one responsible for controlling the power state of the nodes
when fencing. If you are using a non-HA setup and want Ironic
to take care of the power state of the nodes please change the
value of the
force_power_state_during_sync configuration option
/etc/ironic/ironic.conf file to
True and restart the
Also, note that if
openstack undercloud install is re-run the value of
force_power_state_during_sync configuration option will be set back to
the default, which is
Hardware Introspection Problems¶
Introspection hangs and times out¶
ironic-inspector times out introspection process after some time (defaulting to 1 hour) if it never gets response from the introspection ramdisk. This can be a sign of a bug in the introspection ramdisk, but usually it happens due to environment misconfiguration, particularly BIOS boot settings. Please refer to ironic-inspector troubleshooting documentation for information on how to detect and fix such problems.
Accessing the ramdisk¶
Note that the introspection ramdisk is by default built with the dynamic-login element, so you can set up an SSH key and log into it for debugging.
First, think of a temporary root password. Generate a hash by feeding it
openssl passwd -1 command. Edit
manually. Find the line starting with “kernel” and append rootpwd=”HASH” to it.
Do not append the real password. Alternatively, you can append
sshkey=”PUBLIC_SSH_KEY” with your public SSH key.
In both cases quotation marks are required!
When ramdisk is running, figure out its IP address by checking
or DHCP logs from
sudo journalctl -u openstack-ironic-inspector-dnsmasq
SSH as a root user with the temporary password or the SSH key.
Some operating systems, such as RHEL and CentOS, require SELinux to be in permissive or disabled mode so that you can log in to the image. This is achieved by building the image with the selinux-permissive element for diskimage-builder or by passing selinux=0 in the kernel command line.
Accessing logs from the ramdisk¶
Introspection logs are saved on ramdisk failures. Starting with the Newton
release, they are actually stored on all introspection failures. The standard
/var/log/ironic-inspector/ramdisk, and the files there are
tar.gz without an extension.
To collect introspection logs in other cases, set
always_store_ramdisk_logs = true in
/etc/ironic-inspector/inspector.conf, restart the
openstack-ironic-inspector service and retry the introspection.
Refusing to introspect node with provision state “available”¶
If you’re running introspection directly using ironic-inspector CLI (or in case of bugs in our scripts), a node can be in the “AVAILABLE” state, which is meant for deployment, not for introspection. You should advance node to the “MANAGEABLE” state before introspection and move it back before deployment. Please refer to upstream node states documentation for information on how to fix it.
How can introspection be stopped?¶
Introspection for a node can be stopped with the following command:
openstack baremetal introspection abort <NODE UUID>