Use the Viewing Syslog Notification Settings
panel in the SAN Volume Controller Console to
view and specify syslog servers to receive syslog messages from a SAN Volume Controller cluster.
Introduction
The syslog protocol is a client-server
standard for forwarding log messages from a sender to a receiver on
an IP network. The IP network can be either IPv4 or IPv6. The User
Datagram Protocol (UDP) is used to transmit the syslog message. The
syslog protocol can be used across multiple platforms, which enables
you to integrate log data from different types of storage systems
into a central repository. You can use the SAN Volume Controller Console to
configure and modify your syslog settings. SAN Volume Controller can
transmit syslog messages in fully expanded or concise format.
The following table describes the SAN Volume Controller notification
type and its corresponding syslog level.
Table 1. SAN Volume Controller notification
type and corresponding syslog level| SAN Volume Controller notification
type |
Syslog level |
Description |
|---|
| Error |
LOG_ALERT |
Indicates a serious problem on the cluster
that needs to be fixed immediately. |
| Warning |
LOG_ERROR |
Indicates a problem or unexpected
condition with the cluster that needs to be investigated to determine
any corrective action. |
| Informational |
LOG_INFO |
Indicates an expected event
has occurred and does not require any corrective action. |
The SAN Volume Controller facility
value is mapped to a corresponding syslog facility code and value.
The facility of a syslog message indicates its origin and can be used
to differentiate messages by source. For example, the facility value
differentiates messages sent from two clusters or messages sent from
a cluster and other products that uses syslog to send messages.
The SAN Volume Controller facility
of 0 - 3 results in the syslog server receiving messages in concise
format, which provide standard detail on the event. A SAN Volume Controller facility
of 4 - 7 results in the syslog server receiving messages in fully
expanded format, where more details are provided regarding the event.
Syslog concise message format includes the following
data:
- Record type
- Error identifier
- Error code
- Cluster name
- Error sequence number
- Time stamp
- Object type
- Object identifier
- Copy identifier
Syslog full messages format includes the
following data:
- Record type
- Machine type
- Serial number
- Error identifier
- Error code
- Software version
- Field-replaceable unit (FRU)
- Cluster name
- Node identifier
- Error sequence number
- Timestamp
- Object type
- Object identifier
- Copy identifier
- Additional data 0 to 63
- Additional data 64 to 127
The following table describes the
SAN Volume Controller facility
and its corresponding syslog code and value.
Table 2. SAN Volume Controller facility
values and the corresponding syslog facility code and value| SAN Volume Controller facility
values |
Syslog facility code |
Syslog value |
|---|
| 0 |
LOG_LOCAL0 |
16 |
| 1 |
LOG_LOCAL1 |
17 |
| 2 |
LOG_LOCAL2 |
18 |
| 3 |
LOG_LOCAL3 |
19 |
| 4 |
LOG_LOCAL4 |
20 |
| 5 |
LOG_LOCAL5 |
21 |
| 6 |
LOG_LOCAL6 |
22 |
| 7 |
LOG_LOCAL7 |
23 |
Attributes
The
following attributes are displayed:
- Select
- Select the server to use to perform an action from the task list.
- Server Name
- Displays the name for the syslog server. A valid
name is 1 to 15 ASCII characters. The following characters can be
used: a - z, A - Z, 0 - 9, -, _. The name cannot begin with a number
or the hyphen (-) character. Names starting with syslog are
reserved for SAN Volume Controller default
names.
- IP Address
- Displays the IP address of the syslog server. Both IPv4 and IPv6
address structures are supported.
- SVC Facility
- Displays the SAN Volume Controller facility
for the syslog server. The SAN Volume Controller facility
values displayed on the panel are translated into syslog facility
codes and values.
The SAN Volume Controller facility
of 0 - 3 results in the syslog server receiving messages in concise
format, which provide standard detail on the event. A SAN Volume Controller facility
of 4 - 7 results in the syslog server receiving messages in fully
expanded format, where more details are provided regarding the event.
- Send Error Notifications
- Displays whether the SAN Volume Controller cluster
sends events with the notification type of error to the
syslog server. When an event notification with the
type error is received by the SNMP server, the problem
must be fixed immediately. This notification indicates a serious
problem with the SAN Volume Controller cluster.
For example, the event that is being reported could indicate a loss
of redundancy in the system, and it is possible that another failure
could result in loss of access to data. A hardware failure is the
most typical reason this type of notification is sent, but some configuration
errors or fabric errors also are included in this notification type.
- On
- Indicates that events with the notification type
of error are sent to the specified syslog server.
- Off
- Indicates that events with the notification type
of error are not sent to the specified syslog server.
- Send Warning Notifications
- Displays whether the SAN Volume Controller cluster
sends events with the notification type of warning to
the syslog server. A warning notification is sent to
indicate a problem or unexpected condition with the SAN Volume Controller.
Always immediately investigate this type of notification to determine
the effect that it might have on your operation and correct the problem
if necessary. A warning notification does not require any replacement
parts and therefore should not require IBM® Support
Center involvement. However, the event being reported might indicate
a condition that could be fatal to your operating environment; such
as, a critical FlashCopy® operation
has failed.
- On
- Indicates that events with the notification type
of warning are sent to the specified syslog server.
- Off
- Indicates that events with the notification type
of warning are not sent to the specified syslog server.
- Send Informational Notifications
- Displays whether the SAN Volume Controller cluster
sends events with the notification type of informational to
the syslog server. For these types of notifications,
no action is necessary to resolve them. This notification indicates
an event that was expected has occurred. For example, a FlashCopy mapping event has completed successfully.
No remedial action is required when these notification types are sent.
- On
- Indicates that events with the notification type
of informational are sent to the specified syslog server.
- Off
- Indicates that events with the notification type
of informational are not sent to the specified syslog
server.
Actions
You
can select one of the following tasks from the task list:
- Add a Server
- Modify Server
- Delete Server
- Go
- Click this button after selecting a task from the task list. Clicking Go launches
the panel for the task that you selected.