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#!/bin/bash
FIVEXX_ONLY=true
CONTAINER_SELECT=false
WRITE_TO_FILE=false
FLAGS=""
HELP_TEXT="script usage: $(basename $0) [-h (prints this message)] [-a (print all logs, not just 5xx errors)] [-c (view logs of a certain container)] [-C (view logs of all containers)] [-p (previous pod state)] [-s TIMEDELTA (print logs since TIMEDELTA)] pod_name"
while getopts 'hacCwps:' OPTION; do
case "$OPTION" in
h)
echo "$HELP_TEXT" >&2 ; exit 0
;;
a)
FIVEXX_ONLY=false
;;
c)
CONTAINER_SELECT=true
;;
C)
[[ $CONTAINER_SELECT == true ]] && echo "ERROR: -C AND -c CAN'T BE USED AS PART OF THE SAME COMMAND" && exit -2
FLAGS="$FLAGS --all-containers"
echo "VIEWING LOGS OF ALL CONTAINERS IN POD"
;;
p)
FLAGS="$FLAGS -p"
echo "VIEWING LOGS OF POD'S PREVIOUS STATE"
;;
w)
WRITE_TO_FILE=true
echo "WRITE TO FILE: TRUE"
;;
s)
TIMEDELTA="$OPTARG"
echo "TIME DELTA SPECIFIED: $TIMEDELTA"
FLAGS="$FLAGS --since=$TIMEDELTA"
;;
?)
echo "$HELP_TEXT" >&2 ; exit 0
exit 0
;;
esac
done
shift "$(($OPTIND -1))"
POD_ARG="$1"
ENV="$( kubectx -c | cut -d "-" -f3 )"
POD_LIST="$( kubectl get pods --all-namespaces | grep "$POD_ARG" | awk '$0!=""{print NR, $0}' )"
POD_NUM="$( echo "$POD_LIST" | wc -l )"
POD=""
CONTAINER=""
get_containers () {
CONTAINER_LIST="$( kubectl get pods "$POD" -o jsonpath="{.spec['containers','initContainers'][*].name}" | tr ' ' '\n' | awk '$0!=""{print NR, $0}' )"
CONTAINER_NUM="$( echo "$CONTAINER_LIST" | wc -l )"
if [[ "$CONTAINER_NUM" -gt 1 ]]; then
echo -e "\nLIST OF CONTAINERS IN POD ${POD}:\n${CONTAINER_LIST}\n"
read -p 'PLEASE SELECT POD NUMBER: ' containerindex
[[ "$containerindex" =~ [0-9]+ ]] || echo "FUNKY INPUT, DEFAULTING TO 1" && containerindex=1
if [[ "$containerindex" -le "$CONTAINER_NUM" ]]; then
CONTAINER="$( echo "$CONTAINER_LIST" | sed -n "${containerindex}p" | sed -r "s|^[^ ]* *||g" )"
else
echo "ERROR: INDEX OF CONTAINER EXCEEDS NUMBER OF CONTAINERS FOUND INSIDE POD"
exit 1
fi
elif [[ "$CONTAINER_NUM" -eq 1 ]]; then
CONTAINER="$( echo "$CONTAINER_LIST" | sed -r "s|^[^ ]* *||g" )"
else
echo "NO CONTAINERS FOUND IN $POD"
exit -1
fi
FLAGS="$FLAGS --container="$CONTAINER""
}
get_logs () {
grepstr=""
echostr="ALL LOGS FOR POD ${POD}:\n"
tmp_file="$( mktemp -p "/tmp" "${POD}_logs_tmp_XXXXX" )"
file="${POD}_logs.txt"
NS="$( echo "$POD_LIST" | grep "$POD" | sed -r "s|^[^ ]* *([^ ]*) *(.*?)|\1|g" )"
[[ ! $( kubens -c | grep "$NS" ) ]] && kubens "$NS"
[[ $( kubens -c | grep "$NS" ) ]] || exit -1
[[ $CONTAINER_SELECT == true ]] && get_containers && echostr="$( echo "$echostr" | sed -r "s|:| (container $CONTAINER):|g" )"
[[ ! $FIVEXX_ONLY ]] && echostr="$( echo "$echostr" | sed -r "s|^ALL|5XX|" )" && grepstr="[^\.0-9a-zA-Z\-]5[0-9]{2}[^\.0-9a-zA-Z\-]"
echo -e "$echostr"
kubectl logs "$POD" $FLAGS --timestamps=true --prefix=true | grep --color=always -E "$grepstr" | tee "$tmp_file"
[[ "$WRITE_TO_FILE" = "true" ]] && cat "$tmp_file" | sed -e 's/\x1b\[[0-9;]*m//g' > "$file" && echo "Logs saved to '$file'."
rm -f "$tmp_file"
}
[[ -z "$POD_ARG" ]] && echo "ERROR: MUST SPECIFY POD" && exit -1
echo -e "CURRENT ENV: $ENV\n"
if [[ "$POD_NUM" -gt 1 ]]; then
echo -e "FOUND MORE THAN ONE POD THAT MATCHES STRING:\n${POD_LIST}\n"
read -p 'PLEASE SELECT POD NUMBER: ' podindex
[[ "$podindex" =~ [0-9]+ ]] || echo "FUNKY INPUT, DEFAULTING TO 1" && podindex=1
if [[ "$podindex" -le "$POD_NUM" ]]; then
POD="$( echo "$POD_LIST" | sed -n "${podindex}p" | sed -r "s|^([^ ]* *){2}||g" | grep -o -E "^[^ ]*" )"
get_logs
else
echo "ERROR: INDEX OF POD EXCEEDS NUMBER OF PODS FOUND"
exit 1
fi
elif [[ "$POD_NUM" -eq 1 ]]; then
POD="$( echo "$POD_LIST" | sed -r "s|^([^ ]* *){2}||g" | grep -o -E "^[^ ]*" )"
get_logs
else
echo "POD NOT FOUND ON $ENV"
exit -1
fi
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