Re: hello, I have two questions about keepalived, can somebody give me a reply?thank you

1. No, it can't be shorter than 1 second. This is a VRRP protocol
limitation. Most enterprise-class VRRP implementation are using a BFD
protocol to achieve sub-second fault detection time. I've created
proof-of-concept BFD subsystem for keepalived some time ago -
https://github.com/ivoronin/keepalived/tree/bfd . Unfortunately it is not
well tested and not suitable for production use.
2. Have you checked "notify_master", "notify_backup", etc parameters?

On Sat, Aug 8, 2015 at 7:10 AM, [email protected] <
[email protected]> wrote:

> 1、              advert_int 1
>
> Did this must be a integer?When master is down, the time of switching
> backup to master will be at least a second?Can this time be shorter?
>
>
>
>
>
>
>
> 2、vrrp_script chk_http_port {
>
>     script "/etc/keepalived/check.sh"
>
>     interval 1
>
>     weight -10
>
> }
>
>
>
> root@ubuntu1:/etc/keepalived# cat
> check.sh
>
> #!/bin/bash
>
>
> process_num=`ps aux |grep tgt |grep -v "grep" |wc
> -l`
>
> if [ $process_num -gt 0
> ];then
>
> exit 0
>
>
> else
>
>
> service keepalived restart        --à If service tgt is stopped, this
> will be excuted every one second, what should i do if i want it is excuted
> once just like "weight -10"
>
>
>
> exit 1
>
>
> fi
>
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