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Second cluster system slow to boot up

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Occasional Contributor

Second cluster system slow to boot up

We have a two node(Alphaserver ES40) cluster running v5.1B (Patch kit 4) and we are using a 100Mbps Crossover cable connection as a Cluster interconnect.

The first machine when boots its comes up very fast, but when the second machine is booting its takes a lot of time( ~20 minutes), and once place where it spends a lot of time is while "Mounting memory Filesystems". Has anybody else seen this behaivior or have any suggestions.

Thanx
Balaji./

4 REPLIES
Esteemed Contributor Esteemed Contributor

Re: Second cluster system slow to boot up

You have to be very careful using crossover cables. The best way to use them is to make sure that both adapters are using the same speed. You can fix the speed from the console or the lan_config command depending on the adapter. Depending on the adapter type you may need a patch that allows you to set the adapter speed for the cluster interconnect.

There are other possible causes for the slow boot too. And ~20 minutes may not even be excessive (depending on the configuration). If the above doesn't help, please provide a more detailed description of the configuration and include version numbers and patch levels.
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Honored Contributor Honored Contributor

Re: Second cluster system slow to boot up

Have a look into the cluster installation guide. Maybe a hub/switch is a better solution. A gigabit ethernet card is not very expensive and interconnect is critical for a cluster.

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Honored Contributor Honored Contributor

Re: Second cluster system slow to boot up

Hi,

are there any errors in messages or in the syslog.dated log files?
Look for error counters with
netstat -I"nic" -s

I also think that a 100mbit crossover link is not adequate. ;-)

greetings,

Michael
Occasional Contributor

Re: Second cluster system slow to boot up

Thanx for all the replies.
Yes, the machines are in the lab environment , so we had to do with a crossover cable.

For the production environment we would be using a HUB for the cluster interconnect.

BTW the speeds on both the cards are set to 100Mbps full duplex using the lan_config command.

Also, I would plan to use GIGAbit cards in the future

Thanx
Balaji./