linux - 并行 fping 多台主机

Question

我想使用 fping 来 ping parellel 中的一些主机，如果其中一个主机宕机，则将其写入一个文件。下面的工作正常，但它为每个 ip 运行一次我如何消除这个或者如果 rcv < 1？

#!/bin/bash

down_hosts=/tmp/down.log
hosts=/tmp/ips.txt

while read line  
do
    alive=$(fping -c 1 -f ips.txt | awk -F: '{ print $1 }')
    grep -q -o $line <<<$alive
    if [[ "$?" ==  "1" ]];
    then
        echo "$line is offline"
        if  [ $(grep -c "$line" "$down_hosts") -eq 0 ]; then
            echo $line >> down.log
        fi    
    else
        echo "$line is online"
        if  [ $(grep -c "$line" "$down_hosts") -eq 1 ]; then
            sed -i "/$line/d" "$down_hosts"
        fi
    fi
done < ips.txt

输出

8.8.8.8 : xmt/rcv/%loss = 1/1/0%, min/avg/max = 3.67/3.67/3.67
1.2.3.4 : xmt/rcv/%loss = 1/0/100%
4.3.2.1 : xmt/rcv/%loss = 1/0/100%
8.8.8.8 is online

8.8.8.8 : xmt/rcv/%loss = 1/1/0%, min/avg/max = 3.68/3.68/3.68
1.2.3.4 : xmt/rcv/%loss = 1/0/100%
4.3.2.1 : xmt/rcv/%loss = 1/0/100%
1.2.3.4 is offline

8.8.8.8 : xmt/rcv/%loss = 1/1/0%, min/avg/max = 3.65/3.65/3.65
1.2.3.4 : xmt/rcv/%loss = 1/0/100%
4.3.2.1 : xmt/rcv/%loss = 1/0/100%
4.3.2.1 is offline

Answer 1

由于您的 fping 调用每次都执行相同的操作，因此您可以在循环之前运行它。

alive=$(fping -c 1 -f ips.txt | awk -F: '{ print $1 }')
while read line  
do
    # ...
done < ips.txt