#!/bin/expect --
set vm_num [lindex $argv 0]
puts "``````````````````````````````````````````````````````````````"
puts "``````````````````````````````````````````````````````````````"
puts "Registering Stations on VM"
puts "Tarts to be Registered: $vm_num"
puts "``````````````````````````````````````````````````````````````"
puts "``````````````````````````````````````````````````````````````"
for { set index 0 } { $index < [llength $vm_num] } { incr index } {
puts "Registering Tart Num: [lindex $vm_num $index]"
switch -- [lindex $vm_num $index]\
1 {
spawn telnet 10.171.0.10 6187
set timeout -1
expect {
puts "``````````````````````````````````````````````````````````````"
"*traffic*" { puts "Registering Group1, Group2"
send "traffic map rate reg_group1 30000\r"
send "traffic map rate reg_group2 30000\r"
puts "wait 100 seconds .."
send "traffic go\r"
sleep 100
puts "Registering Group3, Group4"
send "traffic map rate reg_group3 30000\r"
send "traffic map rate reg_group4 30000\r"
puts "wait 100 seconds .."
send "traffic go\r"
sleep 100
puts "Registering Group5, Group6"
send "traffic map rate reg_group5 30000\r"
send "traffic map rate reg_group6 30000\r"
puts "wait 100 seconds .."
send "traffic go\r"
sleep 100
puts "Registering Group7, Group8"
send "traffic map rate reg_group7 30000\r"
send "traffic map rate reg_group8 30000\r"
puts "wait 100 seconds .."
send "traffic go\r"
sleep 100
}
puts "wait 3 seconds"
sleep 3
send -- "^]"
expect -exact "^\]\rtelnet> "
send -- "close\r"
expect eof
wait
}
} 2 {
spawn telnet 10.171.0.11 6187
set timeout -1
expect {
"*traffic*" {
puts "``````````````````````````````````````````````````````````````"
puts "Registering Group1, Group2"
send "traffic map rate reg_group1 30000\r"
send "traffic map rate reg_group2 30000\r"
puts "wait 100 seconds .."
send "traffic go\r"
sleep 100
puts "Registering Group3, Group4"
send "traffic map rate reg_group3 30000\r"
send "traffic map rate reg_group4 30000\r"
puts "wait 100 seconds .."
send "traffic go\r"
sleep 100
puts "Registering Group5, Group6"
send "traffic map rate reg_group5 30000\r"
send "traffic map rate reg_group6 30000\r"
puts "wait 100 seconds .."
send "traffic go\r"
sleep 100
puts "Registering Group7, Group8"
send "traffic map rate reg_group7 30000\r"
send "traffic map rate reg_group8 30000\r"
puts "wait 100 seconds .."
send "traffic go\r"
sleep 100
}
puts "wait 3 seconds"
sleep 3
send -- "^]"
expect -exact "^\]\rtelnet> "
send -- "close\r"
expect eof
wait
}
} 3 {
spawn telnet 10.171.0.12 6187
set timeout -1
expect {
"*traffic*" {
puts "``````````````````````````````````````````````````````````````"
puts "Registering Group1, Group2"
send "traffic map rate reg_group1 50000\r"
puts "wait 220 seconds .."
send "traffic go\r"
sleep 220
puts "Registering Group2"
send "traffic map rate reg_group2 50000\r"
puts "wait 220 seconds .."
send "traffic go\r"
sleep 220
}
puts "wait 3 seconds"
sleep 3
send -- "^]"
expect -exact "^\]\rtelnet> "
send -- "close\r"
expect eof
wait
}
}
default {
puts "$vm_num is not a valid tart"
}
}
有人可以指导我吗？我有上面的期望脚本，当我们运行例如 ./vmSetup.ex "1 2 3" 的脚本时会执行该脚本，但这是按顺序执行的。我已经创建了这个 Expect 脚本，但现在我想并行运行脚本中的案例，即 1、2 和 3。有人可以告诉我如何并行运行例如 8 个案例吗？此外，我也使用类似的案例 1 到 3，唯一的区别是 IP。我身边就有25个这样的案例。有人还可以告诉我如何仅使用一个案例来容纳所有 25 个虚拟机吗？
答案1
最简单的方法是重写您的 except 脚本，以便它仅连接到一机器，从命令行获取机器名称或 IP 地址。
然后使用以下任一方式运行该脚本GNU 并行或与xargs -P. xargs更容易用于更简单的并行化任务，parallel更灵活，更适合更复杂的并行化要求。
例如
echo 10.171.0.{10..17} | xargs -P 8 -n 1 /path/to/your/expect/script
这将同时运行最多 8 个作业 ( -P 8)，每个作业恰好指定一个 ( -n 1) IP 地址。
如果您期望脚本产生大量输出，我建议编写脚本，以便它们不会打印到标准输出，而是打印到它们自己的单独日志文件（例如使用 IP 地址expect-10.171.0.10.log），否则所有作业的输出将混合在一起。
至少，每条输出行应该识别它来自哪台机器，例如，通过在每行前面加上 IP 地址和冒号作为前缀。
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