Re: carp flapping

2023-05-28 Thread Nick Holland
Followup... On 5/12/23 08:17, Stuart Henderson wrote: On 2023-05-12, Nick Holland wrote: ... I had several other people suggest network problems. I'm not going to say "impossible" or even "unlikely", but my understanding is that the two machines are both plugged into the same switch, in the

Re: carp flapping

2023-05-16 Thread Kapetanakis Giannis
On 16/05/2023 00:11, Lyndon Nerenberg (VE7TFX/VE6BBM) wrote: Nick, spare yourself the pain and just designate one machine as the master. This is how we run all our proxy server pairs (nginx, squid, other stuff). For a pair fooa/foob, 'a' is the master, and gets advskew 100. The 'b' host gets

Re: carp flapping

2023-05-15 Thread Lyndon Nerenberg (VE7TFX/VE6BBM)
Nick, spare yourself the pain and just designate one machine as the master. This is how we run all our proxy server pairs (nginx, squid, other stuff). For a pair fooa/foob, 'a' is the master, and gets advskew 100. The 'b' host gets 150. Make sure preemption is enabled. When it's upgrade time,

Re: carp flapping

2023-05-12 Thread Kapetanakis Giannis
On 12/05/2023 14:43, Nick Holland wrote: > I had several other people suggest network problems.  I'm not going to > say "impossible" or even "unlikely", but my understanding is that the > two machines are both plugged into the same switch, in the same rack. > > Several people pointed out I was

Re: carp flapping

2023-05-12 Thread Stuart Henderson
On 2023-05-12, Nick Holland wrote: > On 5/12/23 03:28, Stuart Henderson wrote: >> On 2023-05-12, Nick Holland wrote: >>> Here's the problem I've seen: I have my two machines flipping state >>> randomly(?). This bothers me because that means it is breaking people's >>> downloads. Longest

Re: carp flapping

2023-05-12 Thread Nick Holland
On 5/12/23 03:28, Stuart Henderson wrote: On 2023-05-12, Nick Holland wrote: Here's the problem I've seen: I have my two machines flipping state randomly(?). This bothers me because that means it is breaking people's downloads. Longest period betweek flips was less than two weeks. So ...

Re: carp flapping

2023-05-12 Thread Stuart Henderson
On 2023-05-12, Nick Holland wrote: > Here's the problem I've seen: I have my two machines flipping state > randomly(?). This bothers me because that means it is breaking people's > downloads. Longest period betweek flips was less than two weeks. > > So ... I cranked up the carp logging to 5

carp flapping

2023-05-11 Thread Nick Holland
Hi, I have a couple identical servers that provide a few services (not FW or gateway -- http, ftp, etc.). Figured they would make a great CARP pair, so if the primary broke, the secondary would take over immediately. It would also make maintenance windows shorter...make changes on secondary