etcdstats
Connect to a running etcd cluster and display the nodes that consume the largest amount of space by value.
Prerequisites
$ go get -u github.com/coreos/etcd/client
Usage
Usage of etcdstats:
-alsologtostderr
log to standard error as well as files
-cacert string
CA certificate file (optional)
-cert string
client certificate file (optional)
-key string
client certificate key file (optional)
-log_backtrace_at value
when logging hits line file:N, emit a stack trace
-log_dir string
If non-empty, write log files in this directory
-logtostderr
log to standard error instead of files
-n int
display top n highest nodes (default 20)
-prefix string
directory prefix to summarize (default "/")
-server string
server url, e.g. https://127.0.0.1:2379 (required)
-stderrthreshold value
logs at or above this threshold go to stderr
-summarize value
summarize descendent nodes for the directory prefixed by this value instead of displaying these nodes; may specify multiple times for multiple directories
-v value
log level for V logs
-vmodule value
comma-separated list of pattern=N settings for file-filtered logging
Example output
$ etcdstats -server https://127.0.0.1:4001 \
-cacert /var/lib/origin/openshift.local.config/master/ca.crt \
-cert /var/lib/origin/openshift.local.config/master/master.etcd-client.crt \
-key /var/lib/origin/openshift.local.config/master/master.etcd-client.key \
-n 20 \
-summarize /openshift.io/images \
-summarize /kubernetes.io/secrets
Top 20 highest etcd nodes by value size (excluding summarized items):
NODE CHILDREN SIZE
/openshift.io/images 26 1992791
/kubernetes.io/secrets/openshift-infra 60 395833
/kubernetes.io/secrets/default 16 103823
/openshift.io/templates/openshift 12 78802
/kubernetes.io/secrets/kube-system 9 57305
/kubernetes.io/secrets/openshift 9 57080
/kubernetes.io/secrets/myproject 9 56857
/openshift.io/authorization/cluster/policies/default N/A 47539
/openshift.io/authorization/cluster/policies 1 47539
/openshift.io/imagestreams/openshift 11 25326
/kubernetes.io/controllers/default 2 19905
/kubernetes.io/events/default 30 18622
/openshift.io/authorization/cluster/policybindings/:default N/A 16292
/openshift.io/authorization/cluster/policybindings 1 16292
/kubernetes.io/controllers/default/router-1 N/A 15017
/kubernetes.io/pods/default 2 11651
/openshift.io/templates/openshift/jenkins-pipeline-example N/A 10934
/openshift.io/deploymentconfigs/default 2 9219
/kubernetes.io/serviceaccounts/openshift-infra 20 9145
/openshift.io/templates/openshift/jenkins-persistent N/A 8636
Total value size: 2943727
Value size excluding summarized items 280038
Note, in the example, I asked it to summarize /kubernetes.io/secrets. The way summarization works, it excludes showing regular (non-directory) nodes under the prefix. It does not exclude showing directories under the prefix. This is why you see /kubernetes.io/secrets/openshift-infra - it is a directory. What you do not see are etcd nodes for the individual secrets.
License
etcdstats is licensed under the Apache License, Version 2.0.
