Memory leak in etcd in OpenShift 3

Solution In Progress - Updated -

Issue

  • Large amounts of memory usage
  • Increased the memory on etcd nodes from 16GB -> 32GB, still seeing memory being consumed quickly.
[root@example ~]# free -m
              total        used        free      shared  buff/cache   available
Mem:          32013       30610         238         345        1164         796
Swap:          4095        1474        2621
[root@example ~]# systemctl restart etcd
[root@example ~]# free -m
              total        used        free      shared  buff/cache   available
Mem:          32013       11235       18500         334        2278       20185
Swap:          4095        1455        2640
  • Restart of etcd freed up 18GB of Mem, while about half an hour later it is back to:
[root@example ~]# free -m
              total        used        free      shared  buff/cache   available
Mem:          32013       25502        1607         369        4903        5833
Swap:          4095        1452        2643

Environment

  • Red Hat OpenShift Enterprise
    • 3.1.1

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