Missing PID for process inside docker container -

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i'm running simple web application inside docker container. when @ output of netstat, pid/program name blank.

root@fasf343344423# sudo netstat -tulnp active internet connections (only servers) proto recv-q send-q local address foreign address state pid/program name tcp 0 0 0.0.0.0:5697 0.0.0.0:* listen -
tcp 0 0 0.0.0.0:9090 0.0.0.0:* listen -

i've seen pid before on different setup. so, want understand if because of setup issue. appreciate help

i able resolve following change:

  1. edit /etc/apparmor.d/docker file , add following line 

    ptrace peer=docker-default,

  2. sudo service apparmor restart


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