5.6.4. Management and Monitoring of MySQL Deployments

Replication to MySQL and Amazon based instances operates in the same manner as all other replication environments. The current status can be monitored using trepctl. On the master:

shell> trepctl status
Processing status command...
NAME                     VALUE
----                     -----
appliedLastEventId     : mysql-bin.000043:0000000000000291;84
appliedLastSeqno       : 2320
appliedLatency         : 0.733
channels               : 1
clusterName            : alpha
currentEventId         : mysql-bin.000043:0000000000000291
currentTimeMillis      : 1387544952494
dataServerHost         : host1
extensions             : 
host                   : host1
latestEpochNumber      : 60
masterConnectUri       : thl://localhost:/
masterListenUri        : thl://host1:2112/
maximumStoredSeqNo     : 2320
minimumStoredSeqNo     : 0
offlineRequests        : NONE
pendingError           : NONE
pendingErrorCode       : NONE
pendingErrorEventId    : NONE
pendingErrorSeqno      : -1
pendingExceptionMessage: NONE
pipelineSource         : jdbc:mysql:thin://host1:13306/
relativeLatency        : 23.494
resourcePrecedence     : 99
rmiPort                : 10000
role                   : master
seqnoType              : java.lang.Long
serviceName            : alpha
serviceType            : local
simpleServiceName      : alpha
siteName               : default
sourceId               : host1
state                  : ONLINE
timeInStateSeconds     : 99525.477
transitioningTo        : 
uptimeSeconds          : 99527.364
useSSLConnection       : false
version                : Tungsten Replicator 5.4.0 build 48
Finished status command...

On the slave, use trepctl and monitor the appliedLatency and appliedLastSeqno. The output will include the hostname of the Amazon RDS instance:

shell> trepctl status
Processing status command...
NAME                     VALUE
----                     -----
appliedLastEventId     : mysql-bin.000043:0000000000000291;84
appliedLastSeqno       : 2320
appliedLatency         : 797.615
channels               : 1
clusterName            : default
currentEventId         : NONE
currentTimeMillis      : 1387545785268
dataServerHost         : documentationtest.cnlhon44f2wq.eu-west-1.rds.amazonaws.com
extensions             : 
host                   : documentationtest.cnlhon44f2wq.eu-west-1.rds.amazonaws.com
latestEpochNumber      : 60
masterConnectUri       : thl://host1:2112/
masterListenUri        : thl://host2:2112/
maximumStoredSeqNo     : 2320
minimumStoredSeqNo     : 0
offlineRequests        : NONE
pendingError           : NONE
pendingErrorCode       : NONE
pendingErrorEventId    : NONE
pendingErrorSeqno      : -1
pendingExceptionMessage: NONE
pipelineSource         : thl://host1:2112/
relativeLatency        : 856.268
resourcePrecedence     : 99
rmiPort                : 10000
role                   : slave
seqnoType              : java.lang.Long
serviceName            : alpha
serviceType            : local
simpleServiceName      : alpha
siteName               : default
sourceId               : documentationtest.cnlhon44f2wq.eu-west-1.rds.amazonaws.com
state                  : ONLINE
timeInStateSeconds     : 461.885
transitioningTo        : 
uptimeSeconds          : 668.606
useSSLConnection       : false
version                : Tungsten Replicator 5.4.0 build 48
Finished status command...