shell 服務(wù)狀態(tài)監(jiān)控

    #!/bin/sh
    DBSTAT=`ps -ef|grep 'postmaster'|grep -v 'grep'`
    if [ "$DBSTAT" == "" ];
    then
    echo "DB down"
    DBstus=`ps -ef|grep 'postmaster'|grep -v 'grep'`
    while [ "$DBstus" == "" ];
    do
    if ["$DBstus" == ""];
    then
    echo "DB starting ..."
    /etc/init.d/postgresql start
    DBstus=`ps -ef|grep 'postmaster'|grep -v 'grep'`
    else
    echo "PostgreSQL already running! "
    fi
    done
    else
    echo "DB running"
    fi