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do-agent eats ram

Posted October 27, 2019 1.3k views
Monitoring

I upgraded my old droplet with the new monitoring and the do-agent eats over 40% of the available RAM and spawns a lot of mysqld processes

$ top -b -H -n1 | grep do-agent
 9256 do-agent  20   0  496116   5692      0 S  0.0  0.6   0:01.59 do-agent
 9276 do-agent  20   0  496116   5692      0 S  0.0  0.6   0:00.74 do-agent
 9277 do-agent  20   0  496116   5692      0 S  0.0  0.6   0:02.50 do-agent
 9278 do-agent  20   0  496116   5692      0 S  0.0  0.6   0:00.00 do-agent
 9285 do-agent  20   0  496116   5692      0 S  0.0  0.6   0:13.49 do-agent
 9286 do-agent  20   0  496116   5692      0 S  0.0  0.6   0:06.80 do-agent
10417 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.60 mysqld
10514 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.60 mysqld
10515 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.50 mysqld
10516 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.64 mysqld
10517 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.59 mysqld
10518 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.55 mysqld
10519 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.63 mysqld
10520 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:01.02 mysqld
10521 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.78 mysqld
10522 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:01.22 mysqld
10523 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.58 mysqld
10524 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:02.70 mysqld
10530 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:15.68 mysqld
10531 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:02.79 mysqld
10532 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:01.90 mysqld
10533 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:02.90 mysqld
10534 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:02.06 mysqld
10535 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:06.92 mysqld
10541 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.63 mysqld
10542 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:02.64 mysqld
10543 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.22 mysqld
10544 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.00 mysqld
10545 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:06.34 mysqld
10546 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.00 mysqld
10547 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.08 mysqld
10548 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.20 mysqld
10549 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.01 xpl_worker1
10550 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.01 xpl_worker0
10551 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.00 mysqld
10552 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:03.12 mysqld
10555 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:22.20 mysqld
10556 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.25 mysqld
10557 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.13 mysqld
10558 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.01 mysqld
10559 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.00 mysqld
10560 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.00 mysqld
10561 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.00 mysqld
10562 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:00.00 mysqld
10631 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:23.37 mysqld
10892 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:24.24 mysqld
10893 do-agent  20   0 1399056 424744      0 S  0.0 42.1   0:15.87 mysqld

I tried to uninstall monitoring by purging the do-agent : sudo apt-get purge do-agent and restarting the droplet, but this didn’t help. Is this expected behaviour? This is on Ubuntu 18.04.3 LTS with the smallest droplet.

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2 comments
  • tllc November 26, 2019
    Reply Report

    I’m also seeing one MySQL process run by the do-agent user that’s taking up kind of a lot of memory. It looks like do-agent uses a MySQL instance for itself.

      PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                                                                                            
11511 do-agent  20   0 3011664 372820  10068 S   0.0  4.5  57:43.96 mysqld                                                                                             
 1275 mysql     20   0 2399212  95952   5744 S   0.0  1.2  71:49.54 mysqld
  • tridnguyen June 12, 2021
    Reply Report

    I am seeing the same thing on my DO droplet. Not sure why.

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2 answers
michellep November 11, 2019

do-agent doesn’t spin up MySQL or MySQL services. Did you by chance install MySQL under the do-agent user?

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Moscu January 2, 2021

I also seeing something like this in my droplet. I instaled Caprover directly from the marketplace and haven’t done any customization.

I’m seeing MySQL and MongoDB instances run by the do-agent user.

8617 do-agent 20 0 1092028 12680 4656 S 0.0 0.6 0:47.67 do-agent
14191 do-agent 20 0 1117384 266256 5932 S 0.0 13.0 3:01.48 mysqld
29304 do-agent 20 0 1598328 77408 4204 S 0.3 3.8 11:04.09 mongod

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