Specifications

Health monitors
BIG-IP® Reference Guide 4 - 155
This creates a monitor instance of http for each of these nodes. You can
verify this association using the bigpipe monitor show command:
b node monitor show
This would produce the output shown in Figure 4.72.
The actual monitor instance for each node is represented by the output lines
highlighted with bold text in Figure 4.72.
Reviewing types of association
While the term node association is applied generally, there are three types
of association based on whether the monitor is associated with an address
and a port, address(es) only, or port only. These are node association,
address association, and port association.
• Node association, strictly defined, is the association of a monitor with an
address and port.
• Address association is the association of a monitor with an address only.
• Port association is the association of a monitor with a port only. For a
port association, a wildcard character (*) is used to represent all
addresses.
Once a monitor has been associated with a node, address, or port, no other
monitor can be associated with the same node, address or port. However, an
address association does not prevent a monitor from being associated with a
node of the same address, or the reverse.
Using a simple association
The http example given above is the simplest kind of association, a node
association performed using a monitor with a dest value of *:*. It can be
seen in Figure 4.57, on page 4-141, that in each case the instance destination
node is identical to the node the monitor has been associated with. This is
because the template http, shown in Figure 4.57, was used as is, with a dest
+- NODE 11.12.11.20:80 UP
| |
| +- http
| 11.12.11.20:80 up enabled
|
+- NODE 11.12.11.21:80 UP
| |
| +- http
| 11.12.11.21:80 up enabled
|
+- NODE 11.12.11.22:80 UP
|
+- http
11.12.11.22:80 ip enabled
Figure 4.72 The output of the b node monitor show command