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Low Disk Watermark



Hi All, 

My Origin cluster is pretty new, and I happen to spot the following log entry by elasticsearch in kibana (I'm using OpenShift's logging stack): 

[2016-08-30 01:44:25,997][INFO ][cluster.routing.allocation.decider] [Quicksilver] low disk watermark [15%] exceeded on [t2l6Oz8uT-WS8Fa7S7jzfQ][Quicksilver] free: 1.5gb[11.4%], replicas will not be assigned to this node

df on the node shows the following: 

/dev/mapper/centos_node3-root   14G   13G  1.6G  89% /
......
tmpfs                          7.8G  4.0K  7.8G   1% /var/lib/origin/openshift.local.volumes/pods/8a2a40e3-5f83-11e6-8b2f-0231a929d7bf/volumes/kubernetes.io~secret/builder-dockercfg-3z4qk-push
tmpfs                          7.8G  4.0K  7.8G   1% /var/lib/origin/openshift.local.volumes/pods/8a2a40e3-5f83-11e6-8b2f-0231a929d7bf/volumes/kubernetes.io~secret/sshsecret-source
tmpfs                          7.8G   12K  7.8G   1% /var/lib/origin/openshift.local.volumes/pods/8a2a40e3-5f83-11e6-8b2f-0231a929d7bf/volumes/kubernetes.io~secret/builder-token-znk7k
tmpfs                          7.8G  4.0K  7.8G   1% 
......

This appears to be the case on one of my other nodes as well (with a slightly different tmpfs size of 5.8G). 

Is this normal? 

Frank 
Systems Engineer

VSee: frank vsee com | Cell: +65 9338 0035


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