cldbguts

Monitors the activity of the Container Location Database (CLDB). This utility prints information about the CLDB service that is running on the node from which you run the utility.

Monitoring the progress of the container location database (CLDB) may be useful when troubleshooting cluster issues.

The cldbguts utility prints information about active container reports, full container reports, registration requests, MapRHPE Ezmeral Data Fabric filesystem heartbeats, NFS server heartbeats, and containers. You can run cldbguts from any container location database (CLDB) node; however, running this command from the container location database (CLDB) master node provides the most relevant information.

Note: After you run cldbguts, it continues to print the output until you kill the process. To prevent cldbguts from printing indefinitely, specify the -n parameter that denotes the number of times cldbguts should print the output.

Syntax:

/opt/mapr/bin/cldbguts [[acr | rpc | heartbeat | containers | alarms | table | all] [-n iterations-count]

Output Fields:

Note: When you run cldbguts without any parameters, only the fcr, clrpc, regn, mfs hb, nfs hb, assigns, roles, progress, and the con-chain fields are displayed.

acr

Represents active container requests (ACR).

This column includes the following information:

nr: Number of ACRs completed in the previous second. The first entry displays the total number of ACRs completed since the start of the CLDB service on the node.
pt: Processing time (in milliseconds) for the ACRs completed in the previous second. The first entry displays the total time (in milliseconds) spent processing the ACRs since the start of the CLDB service on the node.
to: Number of ACRs that took longer than expected in the previous second. The first entry displays the total number of ACRs that took longer than expected since the start of the CLDB service on the node.
d: Number of duplicate ACRs received in the previous second. The first entry displays the total number of duplicate ACRs since the start of the CLDB service on the node.
dp: Number of duplicate ACRs that required additional work in the previous second. The first entry displays the total number of duplicate ACRs that required additional work since the start of the CLDB service on the node.

fcr

Represents full container report (FCR).

This column includes the following information:

nr: Number of FCRs completed in the previous second. The first entry displays the total number of FCRs completed since the start of the CLDB service on the node.
pt: Processing time (in milliseconds) for the FCRs completed in the previous second. The first entry displays the total time (in milliseconds) spent processing the FCRs since the start of the CLDB service on the node.
to: Number of FCRs that took longer than expected in the previous second. The first entry displays the total number of FCRs that took longer than expected since the start of the CLDB service on the node.

regn

Represents registration requests.

This column includes the following information:

nr: Number of registration requests completed in the previous second. The first entry displays the total number of registration requests completed since the start of the CLDB service on the node.
pt: Processing time (in milliseconds) for the registration requests completed in the previous second. The first entry displays the total time (in milliseconds) spent processing the registration requests since the start of the CLDB service on the node.
to: Number of registration requests that took longer than expected in the previous second. The first entry displays the total number of registration requests that took longer than expected since the start of the CLDB service on the node.
d: Number of duplicate registration requests received in the previous second. The first entry displays the total number of duplicate registration requests since the start of the CLDB service on the node.
dp: Number of duplicate registration requests that required additional work in the previous second. The first entry displays the total number of duplicate registration requests that required additional work since the start of the CLDB service on the node.

mfs hb

Information about HPE Ezmeral Data Fabric filesystem heartbeats.

This column includes the following information:

nr: Number of HPE Ezmeral Data Fabric filesystem heartbeats completed in the previous second. The first entry displays total number of HPE Ezmeral Data Fabric filesystem heartbeats completed since the start of the CLDB service on the node.
pt: Processing time (in microseconds) for the HPE Ezmeral Data Fabric filesystem heartbeats completed in the previous second. The first entry displays total time (in microseconds) spent processing HPE Ezmeral Data Fabric filesystem heartbeats since the start of the CLDB service on the node.
to: Number of HPE Ezmeral Data Fabric filesystem heartbeats that took longer than expected in the previous second. The first entry displays total number of HPE Ezmeral Data Fabric filesystem heartbeats that took longer than expected since the start of the CLDB service on the node.
bmc: Number of times the Become Master Command (bmc) has been sent to this MFS.
otc: Number of times the other commands (apart from bmc) has been sent to this MFS.

nfs hb

Information about NFS server heartbeats.

This column includes the following information:

nr: Number of NFS server heartbeats completed in the previous second. The first entry displays total number of NFS server heartbeats completed since the start of the CLDB service on the node.
pt: Processing time (in microseconds) for the NFS server heartbeats completed in the previous second. The first entry displays the total time (in microseconds) spent processing HPE Ezmeral Data Fabric filesystem heartbeats since the start of the CLDB service on the node.

assigns

This column includes the following information:

nr: Number of container assign requests in the previous second. The first entry displays the total number of container assign requests since the start of the CLDB service on the node.
nc: Number of containers created as part of the above container assign requests in the previous second. The first entry displays the total number of containers created since the start of the CLDB service on the node.
nrt: Number of container assign requests for tablets in the previous second. The first entry displays the total number of container assign requests for tablets since the start of the CLDB service on the node.
nct: Number of containers created as part of the above container assign requests for tablets in the previous second. The first entry displays the total number of container created in tablets since the start of the CLDB service on the node.
pt: Time taken by container assignment RPC in milliseconds
tpt: Time taken by container assignment tablet RPC in milliseconds
cas: Number of storage pools scanned for container assignment requests

roles

Represents the roles of the various replica containers.

This column includes the following information:

bm: Number of replica containers that are in the process of becoming master
ms: Number of replica containers that the CLDB thinks have valid masters
wr: Number of replica containers that are waiting for CLDB to assign a role to them
rs: Number of replica containers that are re-syncing
vr: Number of non-master replica containers that have finished resynchronization
uu: Number of replica containers that are unused. For example, the number of replica containers that are on nodes or storage pools which have been offline or unavailable for more than an hour.

Attention: It may take some time for the CLDB to be aware of role changes.

progress

This column includes the following information:

m%: Percentage of containers that have valid masters
uc: Number of unique containers
v%: Percentage of replica containers that are valid (that is, have completed resynchronization)
tr: Total number of replica containers

con-chain

This column includes the following information:

ms: Number of unique containers that have a master
1r: Number of unique containers that have 2 valid copies of the data
2r: Number of unique containers that have 3 valid copies of the data

location

This column includes the following information:

lu: Number of container location lookups
up: Number of container location updates
dl: Number of container location deletes
sc: Number of container location scans

size

This column includes the following information:

lu: Number of container size lookups
up: Number of container size updates
dl: Number of container size deletes
sc: Number of container size scans

sptable

This column includes the following information:

lu: Number of lookups on the SP-Container-Vol table
up: Number of updates on the SP-Container-Vol table
dl: Number of deletes on the SP-Container-Vol table
sc: Number of scans on the SP-Container-Vol table

nodes

This column includes the following information:

nn: Number of nodes in the cluster
of: Number of offline nodes
nsp: Number of storage pools
of: Number of offline storage pools

Example Output:

/opt/mapr/bin/cldbguts all  -n 3 
            2019-09-15 22:08:39,981
            mfs hb                nfs hb                 assigns                         roles                    progress            con-chain       location            size             sptable            fcr              clrpc           regn            nodes      
            nr        pt     to  bmc  otc    nr  pt     nr  nc  nrt  nct   pt  tpt  cas    bm  ms  wr  rs  vr  uu      m%    uc     v%    tr    ms  1r  2r    lu   up  dl  sc   lu   up  dl  sc   lu  up  dl  sc     nr   pt   to     nr    pt   to    nr   pt  to   nn  of  sp  of  
            428807  112504140   0   57   0      0   0    120   5   0    0   294   0    2      0  61   0   0   0   0    98.39%  62  100.00%  61    61   0   0     0  113   0  32    0  416   0  16    0   1   0   0    476  5073   0    5650  3971   0     3  178   0    1   0   1   0  
            1       245      0   57   0      0   0     0    0   0    0    0    0    0      0  61   0   0   0   0    98.39%  62  100.00%  61    61   0   0     0   0    0   0    0   0    0   0    0   0   0   0     0     0    0      0     0    0     0   0    0    1   0   1   0  
            1       288      0   57   0      0   0     0    0   0    0    0    0    0      0  61   0   0   0   0    98.39%  62  100.00%  61    61   0   0     0   0    0   0    0   0    0   0    0   0   0   0     0     0    0      0     0    0     0   0    0    1   0   1   0