Tag: openstack

Openstack swift: EADDRNOTAVAIL error

Problem swift-bench keeps EADDRNOTAVAIL error with a highly concurrency setting and multiple swift-bench clients. Setup Ubuntu 13, Swift single machine installation (refer SAIO), swift-client runs local with no-proxy mode. Solution EADDRNOTAVAIL stands for either unavailability of ephemeral ports and a known kernel bug. Check your range of ports: $cat /proc/sys/net/ipv4/ip_local_port_range swift-bench in no-proxy mode uses…

Openstack Swift: Introduction for Developers (Part II)

Object server Source File Swift object serve is the storage server for objects. Each object is stored as files on native file-system. Object server keeps object with its metadata on a plain file. PUT, GET and HEAD are useful to look at. Running benchmarking tools swift-bench ssbench cosbench swift-bench is the easiest to use. You…