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Hi All,
I am testing running ceph
luminous(12.2.1-249-g42172a4 (42172a443183ffe6b36e85770e53fe678db293bf) on
ARM server.
The ARM server has a two cores@1.4GHz cpu and 2GB ram and I am running 2
osd per ARM server with 2x8TB(or 2x10TB) hdd.
Now I am facing constantly oom problem.I have
tried upgrade ceph(to fix osd memroy leak problem) and lower the
bluestore cache setting.The oom problems did get better but still
occurs constantly.
I am hoping someone can gives me some advice of
the follow questions.
Is it impossible to run ceph in this config of
hardware or Is it possible I can do some tunning the solve this problem(even to
lose some performance to avoid the oom problem)?
Is it a good idea to use raid0 to combine the 2
HDD into one so I can only run one osd to save some memory?
How is memory usage of osd related to the size of
HDD?
PS:my ceph.conf bluestore cache setting
[osd]
bluestore_cache_size = 104857600 bluestore_cache_kv_max = 67108864 osd client message size cap = 67108864 2017-12-10
lin.yunfan |
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