Collect OCP logs all pods in a namespace and some pod information

tailAllLogs.sh

#!/bin/env bash
#########################################################################################################################
## Tail all logs of all pods in a namespace to a directory
##
## Parameters:  <ns> --> Namespace which pods are logged
##              <outDir> --> targetDirectory for the logoutput. Defaults to /tmp
#########################################################################################################################
set -o pipefail

NS=${1?"missing arg 1 for Namespace"}
OUTDIR=${2:-/tmp}

__check ()
{
    ##
    ## Are we logged in?
    echo "Running on cluster: $(oc whoami --show-server)"
    __token=$(oc whoami -t)
    if [ -z "${__token}" ] ; then
        echo "ERROR: No login token found. Please login first ..."
        exit 1
    fi
    ##
    ## Can we get pods?
    oc -n ${NS} get pods 2>&1 > /dev/null
    __rc=$?
    if [[ ${__rc} != 0 ]] ; then
        echo "ERROR: Can't get pods. Either the token is expired or you are lacking permissions to get pod information ..."
        exit 1
    fi
    ##
    ## DO we have pods at all
    __numPods=$(oc -n ${NS} get pods -o custom-columns=NAME:.metadata.name | tail -n +2 | wc -l)
    __rc=$?
    if [[ ${__numPods} == 0 ]] ; then
        echo "ERROR: No pods in namespace \"${NS}\". Either the namespace is incorrect or there are no pods to monitor ..."
        exit 1
    fi
    ##
    ## Looks like we get pod information
    mkdir -p ${OUTDIR} || {
        echo "ERROR: Failed to create output directory \"${OUTDIR}\" ..."
        exit 1
    }
    ##
    ## Do we have write permissions to $OUTDIR
    if [[ ! -w ${OUTDIR} ]] ; then
        echo "ERROR: Can't write to directory \"${OUTDIR}\" ..."
        exit 1
    fi
}
##
## Perform some checks
__check

__currentTime=$(date +"%Y%m%d_%H%M%S")
##
## Process list of pods
oc -n ${NS} get pods -o custom-columns=NAME:.metadata.name | tail -n +2 | while read line ; do
    echo "INFO: Processing pod \"${line}\" ..."
    oc -n ${NS} describe pod ${line} 2>&1 > ${OUTDIR}/${line}_${__currentTime}.describe
    oc -n ${NS} get pod ${line} -o yaml 2>&1 > ${OUTDIR}/${line}_${__currentTime}.yaml
    oc -n ${NS} logs ${line} --follow=true --all-containers=true --timestamps=true --ignore-errors=true 2>&1 > ${OUTDIR}/${line}_${__currentTime}.log &
done

echo "Started capture of POD logs to directory ${OUTDIR} ..."
exit 0