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kubectl-view-utilization
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kubectl-view-utilization
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#!/usr/bin/env bash
#
# Copyright 2019 Peter Strzyzewski
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Prints cluster resource utilization
PLUGIN_VERSION="v0.3.3"
VIEW_UTILIZATION_NAMESPACE=""
VIEW_UTILIZATION_NODE_LABEL=""
VIEW_UTILIZATION_OUTPUT="text"
VIEW_UTILIZATION_SUBCOMMAND=""
VIEW_UTILIZATION_UNITS="full"
VIEW_UTILIZATION_CONTEXT=""
VIEW_UTILIZATION_HEADERS="true"
print_plugin_version() {
echo "${PLUGIN_VERSION}"
exit
}
print_help() {
echo "usage: $0 [-v] [--namespace[=]<value>]" >&2
echo "" >&2
echo "-n[--namespace] Filter by namespace" >&2
echo "-l[--selector] Filter by node label" >&2
echo "-o[--output] Output [text/json] default text" >&2
echo "-h Human readable" >&2
echo "--context The name of the kubeconfig context to use" >&2
echo "--no-headers Disable printing headers" >&2
echo "-v Prints version" >&2
echo "--help Prints help" >&2
echo "subcommands:" >&2
echo " namespace[s] Shows namespace utilization" >&2
echo " node[s] Shows node utilization" >&2
exit
}
get_pod_data() {
local template
local namespace
local context
read -r -d '' template <<'EOF'
{{/* get_pod_data */}}
{{ range .items }}
{{ $namespace:=.metadata.namespace }}
{{ $node:=.spec.nodeName }}
{{ range .spec.containers }}
{{ $namespace }}
{{ "\t" }}
{{ $node }}
{{"\t"}}
{{ if .resources.requests.cpu }}
{{ .resources.requests.cpu }}
{{ else }}
0
{{end}}
{{ "\t" }}
{{ if .resources.requests.memory }}
{{ .resources.requests.memory }}
{{ else }}
0Ki
{{end}}
{{ "\t" }}
{{ if .resources.limits.cpu }}
{{ .resources.limits.cpu }}
{{ else }}
0
{{end}}
{{ "\t" }}
{{ if .resources.limits.memory }}
{{ .resources.limits.memory }}
{{ else }}
0Ki
{{end}}
{{ "\n" }}
{{end}}
{{end}}
EOF
# Debug
# echo "${template//[$' \t\r\n']}" >&2
if [ "${VIEW_UTILIZATION_NAMESPACE}" != "" ]; then
namespace="--namespace=${VIEW_UTILIZATION_NAMESPACE}"
else
namespace="--all-namespaces"
fi
if [ "${VIEW_UTILIZATION_CONTEXT}" != "" ]; then
context="--context=${VIEW_UTILIZATION_CONTEXT}"
else
context=""
fi
kubectl $context get pod $namespace --field-selector=status.phase=Running -o=go-template --template="${template//[$' \t\r\n']}"
}
get_node_data() {
local node_label
local context
if [ "${VIEW_UTILIZATION_NODE_LABEL}" != "" ]; then
node_label="-l ${VIEW_UTILIZATION_NODE_LABEL}"
fi
if [ "${VIEW_UTILIZATION_CONTEXT}" != "" ]; then
context="--context=${VIEW_UTILIZATION_CONTEXT}"
else
context=""
fi
# shellcheck disable=SC2086
kubectl $context get nodes $node_label --field-selector=spec.unschedulable=false -o=jsonpath="{range .items[*]}{.metadata.name}{'\t'}{.status.allocatable.cpu}{'\t'}{.status.allocatable.memory}{'\n'}{end}"
}
test_kubectl_context() {
local output
# Check if context exists in kubeconfig
output=$(kubectl config get-contexts ${VIEW_UTILIZATION_CONTEXT} -o name)
if [ "${output}" == "${VIEW_UTILIZATION_CONTEXT}" ]; then
context="--context=${VIEW_UTILIZATION_CONTEXT}"
else
echo "Context error"
exit 1
fi
}
cluster_utilization() {
# shellcheck disable=SC2016
awkcmd='BEGIN {FS="\t"};
NR==FNR { node[$1]; }
NR==FNR && $2 ~ /[0-9]$/ { alloc_cpu+=$2*1000; };
NR==FNR && $2 ~ /m?$/ { alloc_cpu+=$2; };
NR==FNR && $3 ~ /[0-9]$/ { alloc_mem+=$3; next };
NR==FNR && $3 ~ /[kK](i)?$/ { alloc_mem+=$3*1024; next };
NR==FNR && $3 ~ /M(i)?$/ { alloc_mem+=$3*1048576; next };
NR==FNR && $3 ~ /[gG](i)?$/ { alloc_mem+=$3*1073741824; next };
# CPU requests
$2 in node && $3 ~ /[0-9]$/ { req_cpu+=$3*1000; };
$2 in node && $3 ~ /m?$/ { req_cpu+=$3; };
# memory requests
$2 in node && $4 ~ /m$/ { req_mem+=$4/1000; next }; # there is a bug where bytes are given a unit of "m" but multiplied by 1000
$2 in node && $4 ~ /[kK](i)?$/ { req_mem+=$4*1024; };
$2 in node && $4 ~ /M(i)?$/ { req_mem+=$4*1048576; };
$2 in node && $4 ~ /[gG](i)?$/ { req_mem+=$4*1073741824; };
$2 in node && $4 ~ /[tT](i)?$/ { req_mem+=$4*1099511627776; };
# CPU limits
$2 in node && $5 ~ /[0-9]$/ { lim_cpu+=$5*1000; };
$2 in node && $5 ~ /m?$/ { lim_cpu+=$5; };
# memory limits
$2 in node && $6 ~ /m$/ { lim_mem+=$6/1000; next }; # there is a bug where bytes are given a unit of "m" but multiplied by 1000
$2 in node && $6 ~ /[kK](i)?$/ { lim_mem+=$6*1024; next };
$2 in node && $6 ~ /M(i)?$/ { lim_mem+=$6*1048576; next };
$2 in node && $6 ~ /[gG](i)?$/ { lim_mem+=$6*1073741824; next };
$2 in node && $6 ~ /[tT](i)?$/ { lim_mem+=$6*1099511627776; next };
END {
req_cpu_text=prettify(sprintf("%.0f",req_cpu), cpu_pretty(req_cpu))
req_mem_text=prettify(sprintf("%.0f",req_mem), mem_pretty(req_mem))
req_header=prettify("Requests", "Req")
req_width=calc_max_width(req_header, req_cpu_text, req_mem_text)
percent_req_cpu_text=prettify(calc_percentage(req_cpu, alloc_cpu), sprintf("%s%%", calc_percentage(req_cpu, alloc_cpu)))
percent_req_mem_text=prettify(calc_percentage(req_mem, alloc_mem), sprintf("%s%%", calc_percentage(req_mem, alloc_mem)))
percent_req_header=prettify("%Requests", "%R")
percent_req_width=calc_max_width(percent_req_header, percent_req_cpu_text, percent_req_mem_text)
lim_cpu_text=prettify(lim_cpu, cpu_pretty(lim_cpu))
lim_mem_text=prettify(lim_mem, mem_pretty(lim_mem))
lim_header=prettify("Limits", "Lim")
lim_width=calc_max_width(lim_header, lim_cpu_text, lim_mem_text)
percent_lim_cpu_text=prettify(calc_percentage(lim_cpu, alloc_cpu), sprintf("%s%%", calc_percentage(lim_cpu, alloc_cpu)))
percent_lim_mem_text=prettify(calc_percentage(lim_mem, alloc_mem), sprintf("%s%%", calc_percentage(lim_mem, alloc_mem)))
percent_lim_header=prettify("%Limits", "%L")
percent_lim_width=calc_max_width(percent_lim_header, percent_lim_cpu_text, percent_lim_mem_text)
alloc_cpu_text=prettify(alloc_cpu, cpu_pretty(alloc_cpu))
alloc_mem_text=prettify(sprintf("%.0f", alloc_mem), mem_pretty(alloc_mem))
alloc_header=prettify("Allocatable", "Alloc")
alloc_width=calc_max_width(alloc_header, alloc_cpu_text, alloc_mem_text)
sched_cpu_text=prettify(calc_sched(req_cpu, alloc_cpu), cpu_pretty(calc_sched(req_cpu, alloc_cpu)))
sched_mem_text=prettify(sprintf("%.0f", calc_sched(req_mem, alloc_mem)), mem_pretty(calc_sched(req_mem, alloc_mem)))
sched_header=prettify("Schedulable", "Sched")
sched_width=calc_max_width(sched_header, sched_cpu_text, sched_mem_text)
free_cpu_text=prettify(calc_free(req_cpu, lim_cpu, alloc_cpu), cpu_pretty(calc_free(req_cpu, lim_cpu, alloc_cpu)))
free_mem_text=prettify(sprintf("%.0f", calc_free(req_mem, lim_mem, alloc_mem)), mem_pretty(calc_free(req_mem, lim_mem, alloc_mem)))
free_width=calc_max_width("Free", free_cpu_text, free_mem_text)
if ( output == "text") {
if ( headers == "true" ) {
printf("%-8s %"req_width"s %"percent_req_width"s %"lim_width"s %"percent_lim_width"s %"alloc_width"s %"sched_width"s %"free_width"s\n", "Resource", req_header, percent_req_header, lim_header, percent_lim_header, alloc_header, sched_header, "Free");
}
printf("%-8s %"req_width"s %"percent_req_width"s %"lim_width"s %"percent_lim_width"s %"alloc_width"s %"sched_width"s %"free_width"s\n", "CPU", req_cpu_text, percent_req_cpu_text, lim_cpu_text, percent_lim_cpu_text, alloc_cpu_text, sched_cpu_text, free_cpu_text);
printf("%-8s %"req_width"s %"percent_req_width"s %"lim_width"s %"percent_lim_width"s %"alloc_width"s %"sched_width"s %"free_width"s\n", "Memory", req_mem_text, percent_req_mem_text, lim_mem_text, percent_lim_mem_text, alloc_mem_text, sched_mem_text, free_mem_text);
}
if ( output == "json" ) {
quotes=( units == "full")? "":"\""
printf("{");
printf("\"CPU\": {");
printf("\"requested\": "quotes"%s"quotes",", req_cpu_text);
printf("\"limits\": "quotes"%s"quotes",", lim_cpu_text);
printf("\"allocatable\": "quotes"%s"quotes",", alloc_cpu_text);
printf("\"schedulable\": "quotes"%s"quotes",", sched_cpu_text);
printf("\"free\": "quotes"%s"quotes"", free_cpu_text);
printf("},");
printf("\"Memory\": {");
printf("\"requested\": "quotes"%s"quotes",", req_mem_text);
printf("\"limits\": "quotes"%s"quotes",", lim_mem_text);
printf("\"allocatable\": "quotes"%s"quotes",", alloc_mem_text);
printf("\"schedulable\": "quotes"%s"quotes",", sched_mem_text);
printf("\"free\": "quotes"%s"quotes"", free_mem_text);
printf("}");
printf("}");
}
}
'
awk -v output="${VIEW_UTILIZATION_OUTPUT}" \
-v units="${VIEW_UTILIZATION_UNITS}" \
-v headers="${VIEW_UTILIZATION_HEADERS}" \
"${VIEW_UTILIZATION_AWK_FN}${awkcmd}" <(get_node_data) <(get_pod_data)
}
namespace_utilization() {
# shellcheck disable=SC2016
awkcmd='BEGIN {FS="\t"};
namespaces[$1];
# CPU requests
$3 ~ /[0-9]$/ { req_cpu[$1]+=$3*1000; };
$3 ~ /m?$/ { req_cpu[$1]+=$3; };
# memory requests
$4 ~ /m$/ { req_mem[$1]+=$4/1000; }; # there is a bug where bytes are given a unit of "m" but multiplied by 1000
$4 ~ /[kK](i)?$/ { req_mem[$1]+=$4*1024; };
$4 ~ /M(i)?$/ { req_mem[$1]+=$4*1048576; };
$4 ~ /[gG](i)?$/ { req_mem[$1]+=$4*1073741824; };
$4 ~ /[tT](i)?$/ { req_mem[$1]+=$4*1099511627776; };
# CPU limits
$5 ~ /[0-9]$/ { lim_cpu[$1]+=$5*1000; };
$5 ~ /m?$/ { lim_cpu[$1]+=$5; };
# memory limits
$6 ~ /m$/ { lim_mem[$1]+=$6/1000; next }; # there is a bug where bytes are given a unit of "m" but multiplied by 1000
$6 ~ /[kK](i)?$/ { lim_mem[$1]+=$6*1024; next };
$6 ~ /M(i)?$/ { lim_mem[$1]+=$6*1048576; next };
$6 ~ /[gG](i)?$/ { lim_mem[$1]+=$6*1073741824; next };
$6 ~ /[tT](i)?$/ { lim_mem[$1]+=$6*1099511627776; next };
END {
total_records=0;
for (namespace in namespaces) {
total_records++;
nsindex[total_records]=namespace;
if (longest_namespace_len < length(namespace)) longest_namespace_len = length(namespace)
}
if (longest_namespace_len < 9 ) longest_namespace_len = 9
# sort namespaces alphabetically
a_sort(nsindex)
if ( output == "text" ) {
req_cpu_header=prettify("CPU Requests", "Req")
req_mem_header=prettify("Memory Requests", "Req")
lim_cpu_header=prettify("CPU Limits", "Lim")
lim_mem_header=prettify("Memory Limits", "Lim")
req_cpu_width=length(req_cpu_header)
req_mem_width=length(req_mem_header)
lim_cpu_width=length(lim_cpu_header)
lim_mem_width=length(lim_mem_header)
for (z = 1; z in nsindex; z++) {
req_cpu_text[z]=prettify(req_cpu[nsindex[z]], cpu_pretty(req_cpu[nsindex[z]]))
req_mem_text[z]=prettify(sprintf("%.0f",req_mem[nsindex[z]]), mem_pretty(req_mem[nsindex[z]]))
lim_cpu_text[z]=prettify(lim_cpu[nsindex[z]], cpu_pretty(lim_cpu[nsindex[z]]))
lim_mem_text[z]=prettify(sprintf("%.0f",lim_mem[nsindex[z]]), mem_pretty(lim_mem[nsindex[z]]))
req_cpu_width=(req_cpu_width < length(req_cpu_text[z]))? length(req_cpu_text[z]): req_cpu_width
req_mem_width=(req_mem_width < length(req_mem_text[z]))? length(req_mem_text[z]): req_mem_width
lim_cpu_width=(lim_cpu_width < length(lim_cpu_text[z]))? length(lim_cpu_text[z]): lim_cpu_width
lim_mem_width=(lim_mem_width < length(lim_mem_text[z]))? length(lim_mem_text[z]): lim_mem_width
}
if ( headers == "true" ) {
if ( units == "human" ) {
printf("%-"longest_namespace_len"s %-"req_cpu_width"s %"lim_cpu_width"s %-"req_mem_width"s %"lim_mem_width"s\n", "", "CPU", "", "Memory", "")
}
printf("%-"longest_namespace_len"s %"req_cpu_width"s %"lim_cpu_width"s %"req_mem_width"s %"lim_mem_width"s\n", "Namespace", req_cpu_header, lim_cpu_header, req_mem_header, lim_mem_header)
}
for (z = 1; z in nsindex; z++) {
printf("%-"longest_namespace_len"s %"req_cpu_width"s %"lim_cpu_width"s %"req_mem_width"s %"lim_mem_width"s\n", nsindex[z], req_cpu_text[z], lim_cpu_text[z], req_mem_text[z], lim_mem_text[z])
}
}
if ( output == "json" ) {
printf("{");
for (z = 1; z in nsindex; z++) {
printf("\"%s\": {", nsindex[z]);
printf("\"CPU\": {");
printf("\"requested\": %s,", (req_cpu[nsindex[z]]=="" ? "0" : req_cpu[nsindex[z]]));
printf("\"limits\": %s", (lim_cpu[nsindex[z]]=="" ? "0" : lim_cpu[nsindex[z]]));
printf("},");
printf("\"Memory\": {");
printf("\"requested\": %s,", (req_mem[nsindex[z]]=="" ? "0" : req_mem[nsindex[z]]));
printf("\"limits\": %s", (lim_mem[nsindex[z]]=="" ? "0" : lim_mem[nsindex[z]]));
printf("}");
separator = (z < total_records ? "," : "");
printf("}%s",separator);
}
printf("}");
}
}
'
awk -v output="${VIEW_UTILIZATION_OUTPUT}" \
-v units="${VIEW_UTILIZATION_UNITS}" \
-v headers="${VIEW_UTILIZATION_HEADERS}" \
"${VIEW_UTILIZATION_AWK_FN}${awkcmd}" <(get_pod_data)
}
node_utilization() {
# shellcheck disable=SC2016
awkcmd='BEGIN {FS="\t"};
NR==FNR { nodes[$1]; }
NR==FNR && $2 ~ /[0-9]$/ { alloc_cpu[$1]+=$2*1000; };
NR==FNR && $2 ~ /m?$/ { alloc_cpu[$1]+=$2; };
NR==FNR && $3 ~ /Ki?$/ { alloc_mem[$1]+=$3*1024; next };
# CPU requests
$3 ~ /[0-9]$/ { req_cpu[$2]+=$3*1000; };
$3 ~ /m$/ { req_cpu[$2]+=$3; };
# memory requests
$4 ~ /m$/ { req_mem[$2]+=$4/1000; }; # there is a bug where bytes are given a unit of "m" but multiplied by 1000
$4 ~ /[kK](i)?$/ { req_mem[$2]+=$4*1024; };
$4 ~ /M(i)?$/ { req_mem[$2]+=$4*1048576; };
$4 ~ /[gG](i)?$/ { req_mem[$2]+=$4*1073741824; };
$4 ~ /[tT](i)?$/ { req_mem[$2]+=$4*1099511627776; };
# CPU limits
$5 ~ /[0-9]$/ { lim_cpu[$2]+=$5*1000; };
$5 ~ /m$/ { lim_cpu[$2]+=$5; };
# memory limits
$6 ~ /m$/ { lim_mem[$2]+=$6/1000; next }; # there is a bug where bytes are given a unit of "m" but multiplied by 1000
$6 ~ /[kK](i)?$/ { lim_mem[$2]+=$6*1024; next };
$6 ~ /M(i)?$/ { lim_mem[$2]+=$6*1048576; next };
$6 ~ /[gG](i)?$/ { lim_mem[$2]+=$6*1073741824; next };
$6 ~ /[tT](i)?$/ { lim_mem[$2]+=$6*1099511627776; next };
END {
total_records=0;
for (node in nodes) {
total_records++;
noindex[total_records]=node;
if (longest_node_len < length(node)) longest_node_len = length(node)
}
if (longest_node_len < 9 ) longest_node_len = 9
# sort nodes alphabetically
a_sort(noindex)
if ( output == "text" ) {
req_cpu_header=prettify("Requests", "Req")
percent_req_cpu_header=prettify("%Requests", "%R")
req_mem_header=prettify("Requests", "Req")
percent_req_mem_header=prettify("%Requests", "%R")
lim_cpu_header=prettify("Limits", "Lim")
percent_lim_cpu_header=prettify("%Limits", "%L")
lim_mem_header=prettify("Limits", "Lim")
percent_lim_mem_header=prettify("%Limits", "%L")
# Calculate header width
req_cpu_width=length(req_cpu_header)
percent_req_cpu_width=length(percent_req_cpu_header)
if (percent_req_cpu_width < 3 ) percent_req_cpu_width = 3
req_mem_width=length(req_mem_header)
percent_req_mem_width=length(percent_req_mem_header)
if (percent_req_mem_width < 3 ) percent_req_mem_width = 3
lim_cpu_width=length(lim_cpu_header)
lim_mem_width=length(lim_mem_header)
percent_lim_cpu_width=length(percent_lim_cpu_header)
if (percent_lim_cpu_width < 3 ) percent_lim_cpu_width = 4
req_mem_width=length(req_mem_header)
percent_lim_mem_width=length(percent_lim_mem_header)
if (percent_lim_mem_width < 3 ) percent_lim_mem_width = 4
for (z = 1; z in noindex; z++) {
req_cpu_text[z]=prettify(req_cpu[noindex[z]], cpu_pretty(req_cpu[noindex[z]]))
req_mem_text[z]=prettify(sprintf("%.0f",req_mem[noindex[z]]), mem_pretty(req_mem[noindex[z]]))
lim_cpu_text[z]=prettify(lim_cpu[noindex[z]], cpu_pretty(lim_cpu[noindex[z]]))
lim_mem_text[z]=prettify(sprintf("%.0f",lim_mem[noindex[z]]), mem_pretty(lim_mem[noindex[z]]))
percent_req_cpu_text[z]=prettify(calc_percentage(req_cpu[noindex[z]], alloc_cpu[noindex[z]]), sprintf("%s%%", calc_percentage(req_cpu[noindex[z]], alloc_cpu[noindex[z]])))
percent_req_mem_text[z]=prettify(calc_percentage(req_mem[noindex[z]], alloc_mem[noindex[z]]), sprintf("%s%%", calc_percentage(req_mem[noindex[z]], alloc_mem[noindex[z]])))
req_cpu_width=(req_cpu_width < length(req_cpu_text[z]))? length(req_cpu_text[z]): req_cpu_width
req_mem_width=(req_mem_width < length(req_mem_text[z]))? length(req_mem_text[z]): req_mem_width
lim_cpu_width=(lim_cpu_width < length(lim_cpu_text[z]))? length(lim_cpu_text[z]): lim_cpu_width
lim_mem_width=(lim_mem_width < length(lim_mem_text[z]))? length(lim_mem_text[z]): lim_mem_width
percent_lim_cpu_text[z]=prettify(calc_percentage(lim_cpu[noindex[z]], alloc_cpu[noindex[z]]), sprintf("%s%%", calc_percentage(lim_cpu[noindex[z]], alloc_cpu[noindex[z]])))
percent_lim_mem_text[z]=prettify(calc_percentage(lim_mem[noindex[z]], alloc_mem[noindex[z]]), sprintf("%s%%", calc_percentage(lim_mem[noindex[z]], alloc_mem[noindex[z]])))
percent_lim_cpu_graph[z]=calc_percentage(lim_cpu[noindex[z]], alloc_cpu[noindex[z]])
percent_lim_mem_graph[z]=calc_percentage(lim_mem[noindex[z]], alloc_mem[noindex[z]])
percent_lim_cpu_graph_input[z]=percent_lim_cpu_graph[z]
percent_lim_mem_graph_input[z]=percent_lim_mem_graph[z]
}
if ( headers == "true" ) {
printf("CPU : %s\n", graph(percent_lim_cpu_graph_input))
printf("Memory: %s\n", graph(percent_lim_mem_graph_input))
printf("%-"longest_node_len"s ", "")
printf("%-"req_cpu_width"s ", "CPU")
printf("%"percent_req_cpu_width"s ", "")
printf("%"lim_cpu_width"s ", "")
printf("%"percent_lim_cpu_width"s ", "")
printf("%-"req_mem_width"s ", "Memory")
printf("%"percent_req_mem_width"s ", "")
printf("%"lim_mem_width"s ", "")
printf("%"percent_lim_mem_width"s\n", "")
printf("%-"longest_node_len"s ", "Node")
printf("%"req_cpu_width"s ", req_cpu_header)
printf("%"percent_req_cpu_width"s ", percent_req_cpu_header)
printf("%"lim_cpu_width"s ", lim_cpu_header)
printf("%"percent_lim_cpu_width"s ", percent_lim_cpu_header)
printf("%"req_mem_width"s ", req_mem_header)
printf("%"percent_req_mem_width"s ", percent_req_mem_header)
printf("%"lim_mem_width"s ", lim_mem_header)
printf("%"percent_lim_mem_width"s\n", percent_lim_mem_header)
}
for (z = 1; z in noindex; z++) {
printf("%-"longest_node_len"s ", noindex[z])
printf("%"req_cpu_width"s ", req_cpu_text[z])
printf("%"percent_req_cpu_width"s ", percent_req_cpu_text[z])
printf("%"lim_cpu_width"s ", lim_cpu_text[z])
printf("%"percent_lim_cpu_width"s ", percent_lim_cpu_text[z])
printf("%"req_mem_width"s ", req_mem_text[z])
printf("%"percent_req_mem_width"s ", percent_req_mem_text[z])
printf("%"lim_mem_width"s ", lim_mem_text[z])
printf("%"percent_lim_mem_width"s\n", percent_lim_mem_text[z])
}
}
if ( output == "json" ) {
printf("{");
for (z = 1; z in noindex; z++) {
printf("\"%s\": {", noindex[z]);
printf("\"CPU\": {");
printf("\"requested\": %s,", (req_cpu[noindex[z]]=="" ? "0" : req_cpu[noindex[z]]));
printf("\"limits\": %s", (lim_cpu[noindex[z]]=="" ? "0" : lim_cpu[noindex[z]]));
printf("},");
printf("\"Memory\": {");
printf("\"requested\": %s,", (req_mem[noindex[z]]=="" ? "0" : req_mem[noindex[z]]));
printf("\"limits\": %s", (lim_mem[noindex[z]]=="" ? "0" : lim_mem[noindex[z]]));
printf("}");
separator = (z < total_records ? "," : "");
printf("}%s",separator);
}
printf("}");
}
}
'
awk -v output="${VIEW_UTILIZATION_OUTPUT}" \
-v units="${VIEW_UTILIZATION_UNITS}" \
-v headers="${VIEW_UTILIZATION_HEADERS}" \
"${VIEW_UTILIZATION_AWK_FN}${awkcmd}" <(get_node_data) <(get_pod_data)
}
VIEW_UTILIZATION_AWK_FN='
function graph(a){
result=""
min=0
max=100
delete overcommit
color_end="\033[0m"
split("▁ ▂ ▃ ▄ ▅ ▆ ▇ █", bars, " ");
for (n in a) {
if (int(a[n]) > 100) {
overcommit[n]=int(a[n])
a[n]=100
}
}
# mawk does not support lshift so we use *2^8
f=int(int(int(max - min)*2^8)/7)
if (f < 1 ) f=1
for (n in a) {
bar_index=int(int(int(a[n]-min)*2^8) / f ) + 1
if (int(overcommit[n])>125) {
color="\033[31m"
} else if (int(overcommit[n])>100) {
color="\033[33m"
} else {
color="\033[32m"
}
result=sprintf("%s%s%s%s", result, color, bars[bar_index], color_end)
}
return result
}
function a_sort(ary, q, x, z){
for (q in ary)
{
x = ary[q]
for (z = q - 1; z && ary[z] > x; z--)
{
ary[z + 1] = ary[z]
}
ary[z + 1] = x
}
return a_join(ary, ORS)
}
function a_join(ary, sep, q, x, z){
# argument order is copacetic with Ruby
for (q = 1; q in ary; q++)
{
if (x)
{
z = z sep ary[q]
}
else
{
z = ary[q]
x = 1
}
}
return z
}
function prettify(full, human) {
return ( units == "full" )? full : human;
}
function calc_max_width(a, b ,c) {
len1=(length(a)>length(b))? length(a) : length(b)
return (len1>length(c))? len1 : length(c)
}
function calc_sched(requests, allocatable) {
if ( allocatable>= requests ) {
return (allocatable - requests)
} else {
return 0
}
}
function calc_free(requests, limits, allocatable) {
total_used=(limits > requests)? limits : requests
if ( allocatable > total_used ) {
return (allocatable - total_used)
} else {
return 0
}
}
function calc_percentage(a,b){
if ( a > 0 && b > 0 ) {
return sprintf("%d", a * 100 / b);
} else if ( b > 0 ) {
return "0";
} else {
return "Err";
}
}
function cpu_pretty(sum){
if (sum < 10000) {
ret = sprintf("%.2g",sum/1000)
} else {
ret = sprintf("%d",sum/1000)
}
return ret
}
function mem_pretty(sum){
if (sum > 0) {
hum[1024^4]="T";
hum[1024^3]="G";
hum[1024^2]="M";
hum[1024^1]="K";
hum[1]="";
for (x=1024^4; x>=0; x/=1024){
if (sum>=x) {
if (sum/x <= 10){
ret = sprintf("%.2g%s",sum/x,hum[x]);break;
} else {
ret = sprintf("%.f%s",sum/x,hum[x]);break;
}
}
}
} else {
return "0"
}
return ret
}
'
while [ "$#" -gt 0 ]; do
case "$1" in
namespace*) VIEW_UTILIZATION_SUBCOMMAND="namespaces"; shift;;
node*) VIEW_UTILIZATION_SUBCOMMAND="nodes"; shift;;
-n|--namespace)
if [[ $# -lt 2 ]]; then
echo "Namespace name is required"
exit 1
fi
VIEW_UTILIZATION_NAMESPACE="$2";
shift 2
;;
-l|--selector)
if [[ $# -lt 2 ]]; then
echo "Label selector value is required"
exit 1
fi
VIEW_UTILIZATION_NODE_LABEL="$2";
shift 2
;;
-o|--output)
if [ "${2}" == "text" ] || [ "${2}" == "json" ]; then
VIEW_UTILIZATION_OUTPUT="$2";
else
echo "Output value is required. Valid values are: text, json."
exit 1
fi
shift 2
;;
--context)
if [[ $# -lt 2 ]]; then
echo "The name of kubeconfig context name is required"
exit 1
fi
VIEW_UTILIZATION_CONTEXT="${2}";
test_kubectl_context
shift 2
;;
--context=*)
if [ "${1#*=}" == "" ]; then
echo "The name of kubeconfig context name is required"
exit 1
fi
VIEW_UTILIZATION_CONTEXT="${1#*=}";
test_kubectl_context
shift 1
;;
-h)
VIEW_UTILIZATION_UNITS="human";
shift
;;
-v)
print_plugin_version
;;
--namespace=*)
if [ "${1#*=}" == "" ]; then
echo "Namespace name is required"
exit 1
fi
VIEW_UTILIZATION_NAMESPACE="${1#*=}";
shift 1
;;
--selector=*)
if [ "${1#*=}" == "" ]; then
echo "Label selector value is required"
exit 1
fi
VIEW_UTILIZATION_NODE_LABEL="${1#*=}";
shift 1
;;
--output=*)
if [ "${1#*=}" == "text" ] || [ "${1#*=}" == "json" ]; then
VIEW_UTILIZATION_OUTPUT="${1#*=}";
else
echo "Output value is required. Valid values are: text, json."
exit 1
fi
shift 1
;;
--no-headers)
VIEW_UTILIZATION_HEADERS="false";
shift 1
;;
--help)
print_help
;;
-*)
echo "Unknown option: $1" >&2;
exit 1
;;
*)
echo "Unknown argument: $1" >&2;
exit 1
;;
esac
done
case ${VIEW_UTILIZATION_SUBCOMMAND} in
namespaces)
namespace_utilization
;;
nodes)
node_utilization
;;
*)
cluster_utilization
;;
esac