Skip to content
Snippets Groups Projects
Select Git revision
  • master default protected
  • simple-task/7248-eol-check-add-node-22
  • 6877_check_iml_deployment
3 results
Blame Permalink
check_docker_io 4.17 KiB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154 






#!/bin/bash
# ======================================================================
#
# Check DOCKER IO DATA
#
# requirements:
# - docker
# - sudo permissions on docker command
# - jq
# - bc
#
# ----------------------------------------------------------------------
# 2024-02-22  v0.1  <axel.hahn@unibe.ch>      init
# ======================================================================


. $(dirname $0)/inc_pluginfunctions
. $(dirname $0)/inc_dockerfunctions.sh

self_APPVERSION=0.1

typeset -i iRead
typeset -i iTrans
typeset -i iSpeedRead
typeset -i iSpeedTrans

# ----------------------------------------------------------------------
# FUNCTIONS
# ----------------------------------------------------------------------


# show help
function _showHelp(){
    local _self=$( basename $0 )
    cat <<EOH
$( ph.showImlHelpHeader )

Show IO data of all docker containers

USAGE:
  $_self [OPTIONS]

OPTIONS:

  General:
  -h, --help        this help

  Connect to docker:
  -p, --path        Custom directory for docker binary
  -t, --target      Custom docker target; value for DOCKER_HOST
                    Needed only if Docker does not run on a unix socket or
                    multiple users run a rootless docker daemon.

  mode:
  -m, --mode MODE   Mode what kind of information to show.
                    The output of container list is sorted by the maximum 
                    value first.

                      netio     sum of netio of all containers IN and OUT

EXAMPLES:
  $_self -m netio
    Show netio of all docker containers

EOH
}

# get a list of all running container names
function getContainerNames(){
    sudo -n --preserve-env docker ps  --format '{"Names": "{{.Names}}" }' | cut -f 4 -d '"'
}

# get process id if a given single container
# param  string  name of container
function getPidOfContainer(){
    sudo -n --preserve-env docker inspect -f '{{ .State.Pid }}' "$1"
}


# ----------------------------------------------------------------------
# MAIN
# ----------------------------------------------------------------------

bOptDebug=0
sMode="all"
while [[ "$#" -gt 0 ]]; do case $1 in
    -h|--help)        _showHelp; exit 0;;
    -d|--debug)       bOptDebug=1; shift;;
    -p|--path)        PATH="$2:$PATH"; shift; shift;;
    -m|--mode)        sMode="$2"; shift; shift;;
    -t|--target)      export DOCKER_HOST="$2"; shift; shift;;
    *) echo "ERROR: Unknown parameter: $1"; _showHelp; exit 1;
esac; done

sLabel="??"

case "$sMode" in
  "netio")    sLabel="Docker Network I/O of all containers: %s MB/s IN .. %s MB/s OUT";;
  *) ph.setStatus critical
     echo "ERROR: mode [$sMode] is unknown. Use -h to get help."
     ph.exit
esac

ph.require "docker"
ph.require "jq"
ph.require "bc"

# --- get data
out=$(
    for CONTAINER_NAME in $( getContainerNames )
    do
        CONTAINER_PID=$(getPidOfContainer $CONTAINER_NAME )

        case "$sMode" in
        "netio")
            data=$( grep ":" "/proc/$CONTAINER_PID/net/dev" | grep -vE "(lo|bond.*|ppp.*):")
            iRead=$( echo "$data" | awk '{ sum+=$2} END { print sum;}' )
            iTrans=$( echo "$data" | awk '{ sum+=$3} END { print sum;}' )
            iSpeedRead=$( ph.perfdeltaspeed "netio-container-$CONTAINER_NAME-rx" $iRead)
            iSpeedTrans=$(ph.perfdeltaspeed "netio-container-$CONTAINER_NAME-tx" $iTrans)

            printf "%-20s %10s %10s %15s %15s\n" "${CONTAINER_NAME}" "$iRead" "$iTrans" "$iSpeedRead B/s" "$iSpeedTrans B/s"
            
            ;;
        esac
    done
)

# --- calc total values over all containers:
iRead=$( echo "$out" | awk '{ sum+=$2} END { print sum;}' )
iTrans=$( echo "$out" | awk '{ sum+=$3} END { print sum;}' )

iSpeedRead=$( ph.perfdeltaspeed "netio-containers-rx" $iRead)
iSpeedTrans=$(ph.perfdeltaspeed "netio-containers-tx" $iTrans)

ph.perfadd "rx"   "$iSpeedRead"
ph.perfadd "tx"   "$iSpeedTrans"

# --- output
sLabel=$( printf "$sLabel" "$(ph.toUnit $iSpeedRead M 2 )" "$(ph.toUnit $iSpeedTrans M 2 )" )

ph.status "$sLabel"
echo "$out"
ph.exit


# if -d was given then show debug infos too
test $bOptDebug -eq 1 && ( echo; echo "DEBUG: full docker system infos as json"; echo "$data" | jq ; _debugInfos)

ph.exit


# ----------------------------------------------------------------------