Monitoring Cluster Status
You can use the
shaman top
and
shaman stat
commands to monitor the overall status of a cluster and cluster resources. The
shaman stat
command shows a snapshot of the current cluster status and clustering resources while
shaman top
displays a dynamic real-time view of the cluster. The following shows an example output of the
shaman stat
command:
# shaman stat
Cluster 'pcs1'
Nodes: 3
Resources: 8
NODE_IP STATUS RESOURCES
M 10.30.24.176 Active 0 CT, 0 VM, 1 ISCSI
* 10.30.25.33 Active 1 CT, 3 VM, 1 ISCSI
10.30.26.26 Active 0 CT, 0 VM, 2 ISCSI
CT ID STATE STATUS OWNER_IP PRIORITY
101 stopped Active 10.30.25.33 0
VM NAME STATE STATUS OWNER_IP PRIORITY
vm1 stopped Active 10.30.25.33 0
vm2 running Active 10.30.25.33 0
vm3 stopped Active 10.30.25.33 0
ISCSI ID STATE STATUS OWNER_IP PRIORITY
iqn.2014-04.com.pstorage:ps1 running Active 10.30.24.176 0
iqn.2014-04.com.pstorage:ps2 running Active 10.30.25.33 0
iqn.2014-04.com.pstorage:ps3 running Active 10.30.26.26 0
The table below explains all output fields:
Field Name
|
Description
|
Cluster
|
Name of the cluster.
The "M" next to the server denotes that the server is the main server in the cluster (called the master server), and the asterisk (*) indicates the server where the
shaman stat
command was executed.
|
Nodes
|
Number of servers with enabled HA support in the cluster.
|
Resources
|
Number of resources
shaman
keeps control of.
|
NODE_IP
|
IP address assigned to the server.
|
STATUS
|
Server status. It can be one of the following:
-
Active
. The server is up and running and controlled by
shaman
.
-
Inactive
. The server is up and running, but
shaman
does not control the server (e.g., the
shamand
service is stopped).
|
RESOURCES
|
Resources hosted on the server.
|
CT ID
|
Container ID.
|
VM NAME
|
Virtual machine name.
|
ISCSI ID
|
iSCSI target name.
|
STATE
|
Denotes whether the virtual machine/Container is running or stopped.
|
STATUS
|
HA status of the virtual machine, Container or iSCSI target (as reported by
shaman
). It can be one of the following:
-
Active
. Healthy virtual machines, Containers or iSCSI targets hosted in the cluster.
-
Broken
. Virtual machines, Containers or iSCSI targets that could not be relocated from a failed server to a healthy one.
-
Pool
. Virtual machines, Containers or iSCSI targets waiting for relocation from a failed server to a healthy one.
|
OWNER_IP
|
IP address of the server where the virtual machine, Container or iSCSI target is hosted.
|
PRIORITY
|
Current priority of the virtual machine/Container. For details, see
Configuring HA Priority for Virtual Machines and Containers
.
|
The output of the
shaman top
command is similar to that of
shaman stat
. Additionally, you can use interactive keys to change the command output on the fly. The following keys are supported:
-
g
: Group or ungroup resources by their status.
-
v
: Show or hide additional information.
-
ENTER or SPACE: Update the screen.
-
q
or Esc or CTRL-C: Quit the command.
-
h
: Show the help screen.
|