Cloudera Manager agent bad healthy

Question

my CDH Cluster has been online more than half year, all the machines and service is normal.

but recently , there is one host agent always under bad healthy, and Cloudera Manager will show the red color on this host.

then I check the agent log as below:

[16/Nov/2019 02:20:11 +0000] 1142 MainThread agent WARNING Long HB processing time: 9.52771306038
[16/Nov/2019 02:20:52 +0000] 1142 MainThread agent WARNING Long HB processing time: 34.8044610023
[16/Nov/2019 02:20:52 +0000] 1142 MainThread agent WARNING Delayed HB: 19s since last
[16/Nov/2019 02:21:14 +0000] 1142 MainThread agent WARNING Long HB processing time: 22.3401939869
[16/Nov/2019 02:21:14 +0000] 1142 MainThread agent WARNING Delayed HB: 7s since last
[16/Nov/2019 02:21:51 +0000] 1142 MainThread agent WARNING Long HB processing time: 36.7459609509
[16/Nov/2019 02:21:51 +0000] 1142 MainThread agent WARNING Delayed HB: 21s since last
[16/Nov/2019 02:22:24 +0000] 1142 MainThread agent WARNING Long HB processing time: 33.0430369377
[16/Nov/2019 02:22:24 +0000] 1142 MainThread agent WARNING Delayed HB: 18s since last
[16/Nov/2019 02:23:04 +0000] 1142 MainThread agent WARNING Long HB processing time: 40.0112349987
[16/Nov/2019 02:23:04 +0000] 1142 MainThread agent WARNING Delayed HB: 25s since last
[16/Nov/2019 02:23:35 +0000] 1142 MainThread agent WARNING Long HB processing time: 30.6218628883
[16/Nov/2019 02:23:35 +0000] 1142 MainThread agent WARNING Delayed HB: 15s since last
[16/Nov/2019 02:24:17 +0000] 1142 MainThread agent WARNING Long HB processing time: 42.0491158962
[16/Nov/2019 02:24:17 +0000] 1142 MainThread agent WARNING Delayed HB: 27s since last
[16/Nov/2019 02:24:55 +0000] 1142 MainThread heartbeat_tracker INFO HB stats (seconds): num:17 LIFE_MIN:0.01 min:0.02 mean:0.18 max:0.53 LIFE_MAX:1.67
[16/Nov/2019 02:24:56 +0000] 1142 MainThread agent WARNING Long HB processing time: 38.8551709652
[16/Nov/2019 02:24:56 +0000] 1142 MainThread agent WARNING Delayed HB: 23s since last
[16/Nov/2019 02:25:21 +0000] 1142 MainThread agent WARNING Long HB processing time: 25.7106430531
[16/Nov/2019 02:25:21 +0000] 1142 MainThread agent WARNING Delayed HB: 10s since last
[16/Nov/2019 02:29:03 +0000] 1142 MainThread agent WARNING Long HB processing time: 169.729107141
[16/Nov/2019 02:29:03 +0000] 1142 MainThread agent WARNING Delayed HB: 154s since last
[16/Nov/2019 02:33:56 +0000] 1142 MainThread agent WARNING Long HB processing time: 292.624284029
[16/Nov/2019 02:33:56 +0000] 1142 MainThread agent WARNING Delayed HB: 277s since last

I am going to check the server cpu load and other things, it seems nothing happened. then I restart agent, but it will happen hours later or one day later , so my questions is:

1) how this error happened ?

thanks

lwang · Accepted Answer

Hi @iamfromsky ,   Thanks for keeping us posted about the issue.

lwang · Answer

Hi @iamfromsky ,

Could you please share your CDH/CM version?

As you mentioned, I would definitely check the resources (CPU, memory, free spaces, /var/log/messages, network etc) on that host.

Also, check service monitor host and service monitor logs and see if that reveals anything.

Thanks,

Li

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