Script to disable a SGE queue on a host
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#!/bin/sh
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# Vars {{{
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readonly PROGNAME=$(basename "${0}")
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readonly PROGDIR=$(readlink -m $(dirname "${0}"))
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readonly ARGS="${*}"
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readonly NBARGS="${#}"
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readonly DEBUG=1
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## Colors
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readonly PURPLE='\033[1;35m'
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readonly RED='\033[0;31m'
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readonly RESET='\033[0m'
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readonly COLOR_DEBUG="${PURPLE}"
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# }}}
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manage_args() { # {{{
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case "${NBARGS}" in
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0 )
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sge_hostname="$(hostname -f)"
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;;
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1 )
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sge_hostname="${1}"
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;;
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* )
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printf '%b\n' "${RED}Expect 1 or 0 argument.${RESET}"
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printf '%b\n' "---"
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usage
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exit 1
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;;
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esac
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}
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# }}}
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usage() { # {{{
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cat <<- EOF
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usage: $PROGNAME [hostname]
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Try to disable the SGE queue of the current host (default)
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or the one passed as first argument.
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EXAMPLES :
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- Disable SGE's queue of the current host
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${PROGNAME}
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- Disable SGE's queue of the "marvin.domain.tld" host
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${PROGNAME} marvin.domain.tld
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EOF
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}
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# }}}
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is_queue_enable() { # {{{
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local_sge_hostname="${1}"
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local_sge_queue_name="${2}"
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## List all available queues and filter according to both 'disable' state and the expected queue name
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local_sge_queue_test=$(qstat -f -qs d -q "${local_sge_queue_name:=/dev/null}@${local_sge_hostname:=/dev/null}" \
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| wc -l)
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case "${local_sge_queue_test}" in
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0 ) ## No result so the queue is enable
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local_sge_queue_state="enable"
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return_queue_enable="0"
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;;
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3 ) ## Results (header + queue name) so the queue is disable
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local_sge_queue_state="disable"
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return_queue_enable="1"
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;;
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* ) ## Unexpected result
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printf '%b\n' "${RED}Not able to determine the state of ${local_sge_queue_name:=/dev/null}@${local_sge_hostname:=/dev/null} queue.${RESET}"
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exit 2
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;;
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esac
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## Simple debug message to valid current variables
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG : is_queue_enable − \
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SGE queue: ${RED}${local_sge_queue_name:=/dev/null}${COLOR_DEBUG} \
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state is: ${RED}${local_sge_queue_state:=/dev/null}${COLOR_DEBUG}."
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return "${return_queue_enable}"
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}
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# }}}
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is_queue_disable() { # {{{
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local_sge_hostname="${1}"
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local_sge_queue_name="${2}"
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## List all available queues and filter according to both 'disable' state and the expected queue name
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local_sge_queue_test=$(qstat -f -qs d -q "${local_sge_queue_name:=/dev/null}@${local_sge_hostname:=/dev/null}" \
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| wc -l)
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case "${local_sge_queue_test}" in
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0 ) ## No result so the queue is enable
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local_sge_queue_state="enable"
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return_queue_disable="1"
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;;
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3 ) ## Results (header + queue name) so the queue is disable
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local_sge_queue_state="disable"
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return_queue_disable="0"
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;;
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* ) ## Unexpected result
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printf '%b\n' "${RED}Not able to determine the state of ${local_sge_queue_name:=/dev/null}@${local_sge_hostname:=/dev/null} queue.${RESET}"
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exit 2
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;;
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esac
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## Simple debug message to valid current variables
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG : is_queue_disable − \
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SGE queue: ${RED}${local_sge_queue_name:=/dev/null}${COLOR_DEBUG} \
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state is: ${RED}${local_sge_queue_state:=/dev/null}${COLOR_DEBUG}."
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return "${return_queue_disable}"
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}
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# }}}
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disable_sge_queue() { # {{{
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local_sge_hostname="${1}"
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local_sge_queue_name="${2}"
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## Simple debug message to valid current variables
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG : disable_sge_queue − \
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Try to disable SGE queue: ${RED}${local_sge_queue_name:=/dev/null}@${local_sge_hostname:=/dev/null}${COLOR_DEBUG}."
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## SGE command to disable the queue
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qmod --disable "${local_sge_queue_name}@${local_sge_hostname}" \
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&& return_disable_queue="${?}"
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return "${return_disable_queue}"
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}
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# }}}
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main() { # {{{
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manage_args "${ARGS}"
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sge_queue_name="$(qhost -h "${sge_hostname:=/dev/null}" -q -xml \
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| grep "queue name" \
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| cut -d"'" -f2 )"
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## Simple debug message with color to valid current variables
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG : main − Try to manage \
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SGE queue: ${RED}${sge_queue_name:=/dev/null}${COLOR_DEBUG} \
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for host: ${RED}${sge_hostname:=/dev/null}${COLOR_DEBUG}."
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## If the queue is enable
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### Try to disable it
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is_queue_enable "${sge_hostname}" "${sge_queue_name}" \
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&& disable_sge_queue "${sge_hostname}" "${sge_queue_name}"
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#&& printf '%b\n' "function disable_queue."
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## If the queue is disable
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### Nothing to do
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is_queue_disable "${sge_hostname}" "${sge_queue_name}"
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}
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# }}}
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main
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exit 0
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