防止在升级erlang时重启rabbitmq-server

时间:2018-01-22 04:22:58

标签: erlang

在erlang升级期间是否可以阻止rabbitmq-server重启?

正如我们在erlang升级期间所知,将调用erlang-base.prerm脚本。

此脚本将检查是否有任何依赖于erlang的其他服务。

如果有的话。它将尝试停止服务,并在erlang升级完成时重新开始。

case "$1" in
    remove|upgrade)
    echo -n "Searching for services which depend on erlang and should be stopped..."
    # find all init scripts and packages they belong
    inits=$(dpkg -S '/etc/init.d/*' 2>/dev/null | sed -e's:/etc/init.d/::')
    # filter the list of the packages
    packs=$(echo $inits | sed -e's/:[[:space:]]\+[^[:space:]]*//g' | sed -e's/ /\n/g' | sort -u)
    # find packages, which depend on erlang
    packs=$(dpkg -s $packs 2>/dev/null | egrep '^Package:|^Status:|^Depends' | awk '{if ($1 ~ /^Package:/) {package=$2;inst=0} else if ($0 ~ /^Status:.* installed$/) {inst=1} else if ((inst==1) && ($0 ~ /^Depends:.* erlang/)) {print package}}')
    # construct services list from the packages
    services=""
    for p in $packs ; do
        service=$(echo $inits | sed -e's/\([^:]\) /\1\n/g' | awk "/^$p:/ {print \$2}")
        services="$services $service"
    done
    services=$(echo $services | tr '\n' ' ' | sed -e's/\(^[[:space:]]*\|[[:space:]]*$\)//g')

    if [ -z "$services" ] ; then
        echo "none found."
    else
        echo "found: $services."
        echo "Stopping services which depend on erlang"
        rl=$(runlevel | awk '{print $2}')
        failed=""
        for service in $services ; do
        if [ -f /usr/share/file-rc/rc -o -f /usr/lib/file-rc/rc ] && [ -f /etc/runlevel.conf ] ; then
            idl=$(filerc $rl $service)
        else
            idl=$(ls /etc/rc${rl}.d/S??${service} 2> /dev/null | head -1)
        fi
        if [ -n "$idl" ] ; then
            echo -n "  $service: stopping..."
            if $idl stop > /dev/null 2>&1 ; then
            echo "done."
            else
            echo "failed. ($?)"
            failed="$failed $service"
            fi
        fi

有没有办法防止这种情况发生?我想手动重启rabbitmq-server ..

0 个答案:

没有答案