A utility to restart select services and/or truncate log files.

bounce_services.out

$ ./bounce_services.sh
=== What would you like to do with openstack services?

     services --> logs:
         openstack-nova-compute-8202E4C_10B54ER.service --> /var/log/nova/nova-compute-8202E4C_10B54ER.log
         openstack-cinder-volume-generic0.service --> /var/log/cinder/volume-generic0.log
         none --> /tmp/infinidat_logit.log

1) truncate logs only     3) truncate and restart
2) restart services only  4) exit
#?

bounce_services.sh

#!/usr/bin/env bash

# A utility to restart select services and/or truncate log files.

set -o nounset
set -o pipefail
set -o noclobber
#set -o errexit

# To enable info and die functions logging to syslog, set to true.
declare -r enable_syslogging="false"

# Report error with $leader prepended and die.
# Override leader with an optional replacement.
# Optionally send to logger.
function die {
    local msg="$1"
    local leader="${2:-Fatal:}"
    (>&2 printf "$leader $msg\n")  # Subshell avoids interactions with other redirections
    if [ "$enable_syslogging" == "true" ]; then
        logger -p user.error -t "$(basename $0)" "$leader $msg"
    fi
    kill -SIGPIPE "$$"  # Die with exit code 141
}

# Report msg with $leader prepended.
# Override leader with an optional replacement.
# Optionally send to logger.
function info {
    local msg="$1"
    local leader="${2:-Info:}"
    (printf "$leader $msg\n")  # Subshell avoids interactions with other redirections
    if [ "$enable_syslogging" == "true" ]; then
        logger -p user.notice -t "$(basename $0)" "$leader $msg"
    fi
}

function truncate_logs {
    for log in "${logs[@]}"; do
        if [ "$verbose" == "true" ]; then
            echo "truncating $log"
        fi
        if [ -f "$log" ]; then  # Do not create missing log
            truncate -s 0 "$log" || die "cannot truncate log $log"
        fi
    done
}

function manage_services {
    local -r action="$1"

    for svc in "${services[@]}"; do
        if [[ "$verbose" == "true" && "$svc" != "none" ]]; then
            echo "$action $svc"
        fi
        if [ "$svc" != "none" ]; then
            systemctl "$action" "$svc" || die "cannot $action service $svc"
        fi
    done
}

function inputs_menu {
    info "What would you like to do with openstack services?" "==="
    echo
    info "services --> logs:" "    "
    for (( i=0; i<${#logs[@]}; i++ )); do
        info "${services[$i]} --> ${logs[$i]}" "        "
    done
    echo
    select choice in "truncate logs only" "restart services only" "truncate and restart" "exit"; do
        case $choice in
            "truncate logs only")     truncate_logs "$logs"; break;;
            "restart services only")  manage_services "restart" "$services"; break;;
            "truncate and restart")   manage_services "stop" "$services"; truncate_logs "$logs"; manage_services "start" "$services"; break;;
            "exit")                   exit;;
        esac
    done
}

### MAIN ###
declare -r verbose="false"
declare -ar logs=( \
    "/var/log/nova/nova-compute-8202E4C_10B54ER.log" \
    "/var/log/cinder/volume-generic0.log" \
    "/tmp/infinidat_logit.log"
)
declare -ar services=( \
    "openstack-nova-compute-8202E4C_10B54ER.service" \
    "openstack-cinder-volume-generic0.service" \
    "none"
    )

inputs_menu