Display Server HA States

Perform this task to view the current role and high availability (HA) state of the MATRIXX servers in a cluster and the HA state of any peer clusters. The service state changes during engine start up and failover operations to indicate whether it is ready for processing or synchronizing its databases.

About this task

The information returned by this script shows the server states at the time the script runs.

Perform this task on a processing server in the active cluster.

Procedure

Enter the following command to display the service state of all servers in the local cluster.
print_blade_stats.py -C

For example:

print_blade_stats.py 1:1:1 -C

Results

Information similar to the following is returned. In this example, in the Cluster Stats, the Node State of all servers is active, which means the servers are ready to process network traffic because they are in the active cluster. 
print_blade_stats.py -C -e 1 -c 2 -b 1
----------------------------------------------------------------
blade - 1:3:1 , version - 5081

time - Mon 2018-10-08T09:03:57
----------------------------------------------------------------


Cluster Stats
-------------
Node   Cluster        Service     Node  Mgmt      
  Id  LeaderId           Role    State  IP Address
========================================================
   1         1  checkpointing   active  127.0.0.1      

(On a standby processing blade the first time it is active)
Peer Cluster Stats
------------------
System Peer
Engine Cluster Cluster Schema    Cluster
    Id      Id   State Version     FQ Id   Cluster Up Time   Cluster Active Time
================================================================================================== 
     1       1 active    5110        0:0        2019-04-29           T23:12:57 0

(On standby processing blade which has been active)
Peer Cluster Stats
------------------
System Peer
Engine Cluster Cluster  Schema    Cluster
    Id      Id   State Version      FQ Id   Cluster Up Time     Cluster Active Time
==================================================================================================
     1       1  active    5110        0:0  2019-04-29T23:12:57    2019-04-27T07:01:12

Peer Cluster Stats
------------------
                                System     Peer
Engine  Cluster       Cluster   Schema  Cluster
    Id       Id         State  Version    FQ Id
===============================================
     1        1        active     5081      0:0


Processing Cluster Stats
------------------------
                                System     Peer
Engine  Cluster       Cluster   Schema  Cluster
    Id       Id         State  Version    FQ Id
===============================================
     1        3        active     5081      0:0

The Peer Cluster Stats shows each engine in the configuration and provides HA information about the processing clusters. Cluster 1:1 is active and the other two clusters are standby. The Peer Cluster FQ Id value shows the engine:cluster ID of the cluster it is protecting (receiving transactions from.) So in this example, cluster 1:1 is not protecting another engine cluster (Peer Cluster FQ Id 0:0) because its cluster state is ACTIVE. Cluster 2:1 is receiving transactions from the active cluster (1:1) and cluster 3:1 is receiving transactions from the first standby cluster (2:1).

To see publishing server HA statistics, run the print_blade_stats.py command on the publishing server.