etcdserver: read-only range request took too long

[Brajesh pandey]

Hi,

Recently I started seeing the following warning messages in etcd logs on one of my system..  any idea why ? and where to look at to get more information ?

2018-05-15 16:53:43.554421 W | etcdserver: read-only range request "key:\"/nodes/node0205-fab/type\" " took too long (141.52701ms) to execute
2018-05-15 16:53:43.554442 W | etcdserver: read-only range request "key:\"/nodes/node0302-fab/type\" " took too long (141.942567ms) to execute
2018-05-15 16:53:43.554486 W | etcdserver: read-only range request "key:\"/nodes/node0407-fab/type\" " took too long (141.891281ms) to execute
2018-05-15 16:53:43.554581 W | etcdserver: read-only range request "key:\"/nodes/node0307-fab/type\" " took too long (141.870968ms) to execute
2018-05-15 16:53:43.554634 W | etcdserver: read-only range request "key:\"/nodes/node0206-fab/role\" " took too long (142.057486ms) to execute
2018-05-15 16:53:44.080577 W | etcdserver: read-only range request "key:\"/nodes/node0403-fab/role\" " took too long (112.033423ms) to execute

[Sam Batschelet]

Hello Brajesh,

Many times numbers like this (141.870968ms) point to slow disk is this SSD?

Please see the FAQ https://github.com/coreos/etcd/blob/master/Documentation/faq.md#what-does-the-etcd-warning-apply-entries-took-too-long-mean

-Sam