Re: [ClusterLabs] Mysql upgrade in DRBD setup

hello, you should put cluster to maintenance mode Sent from my MI 5On Attila Megyeri , Oct 12, 2017 6:55 PM wrote:Hi all, What is the recommended mysql server upgrade methodology in case of an active/passive DRBD storage?(Ubuntu is the platform) 1)      On the

Re: [ClusterLabs] Antw: Re: Antw: Is there a way to ignore a single monitoring timeout

S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137 535 E-mail.: supp...@feldhost.cz www.feldhost.cz - FeldHost™ – profesionální hostingové a serverové služby za adekvátní ceny. FELDSAM s.r.o. V rohu 434/3 Praha 4 – Libuš, PSČ 142 00 IČ: 290 60 958, DIČ: CZ290 60 958 C 200350

Re: [ClusterLabs] big trouble with a DRBD resource

here is nice guide how to configure drbd, clvm... http://marcitland.blogspot.cz/2013/04/building-using-highly-available-esos.html S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137 535 E-mail.: supp...@feldhost.cz www.feldhost.cz - FeldHost™ – profesionální hostingové a serverové

Re: [ClusterLabs] Multi cluster

instace and in case of failure (DC, Internet connection, etc..) it will switch to local instance. If you need also writes, them you also need to solve some data synchronization. S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137 535 E-mail.: supp...@feldhost.cz www.feldhost.cz

Re: [ClusterLabs] Antw: LVM resource and DAS - would two resources off one DAS...

In this case I prefer to use http://www.storagereview.com/lsi_syncro_cs_ha_das_storage_overview <http://www.storagereview.com/lsi_syncro_cs_ha_das_storage_overview> which you can buy on ebay for about 1000USD S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137 535 E-mail.

Re: [ClusterLabs] why resources are restarted when a node rejoins a cluster?

It looks like stickiness not configured. http://clusterlabs.org/doc/en-US/Pacemaker/1.1-plugin/html/Clusters_from_Scratch/ch05s03s02.html S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137 535 E-mail.: supp...@feldhost.cz www.feldhost.cz - FeldHost™ – profesionální hostingové

Re: [ClusterLabs] Two nodes cluster issue

yes, I just have idea, he probably have managed switch or fabric... S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137 535 E-mail.: supp...@feldhost.cz www.feldhost.cz - FeldHost™ – profesionální hostingové a serverové služby za adekvátní ceny. FELDSAM s.r.o. V rohu 434/3 Praha

Re: [ClusterLabs] Two nodes cluster issue

so why to use some other fencing method like disablink port on switch, so nobody can acces faultly node and write data to it. it is common practice too. S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137 535 E-mail.: supp...@feldhost.cz www.feldhost.cz - FeldHost™ – profesionální

Re: [ClusterLabs] resources do not migrate although node is going to standby

hmmi think that it is just prefered location, if it is not available, server should start on other node. you can of cource migrate manualy byt crm resource move resource_name node_name - which in effect change that location pref S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137

Re: [ClusterLabs] timeout for stop VirtualDomain running Windows 7

hmm, it is possible disable installing update on shutdown? and do regular maintanence for updating manually? S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137 535 E-mail.: supp...@feldhost.cz www.feldhost.cz - FeldHost™ – profesionální hostingové a serverové služby za adekvátní

Re: [ClusterLabs] epic fail

nfs server/share is also managed by pacemaker and orderis set right? S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137 535 E-mail.: supp...@feldhost.cz www.feldhost.cz - FeldHost™ – profesionální hostingové a serverové služby za adekvátní ceny. FELDSAM s.r.o. V rohu 434/3 Praha

Re: [ClusterLabs] Two nodes cluster issue

I personally think that power off node by switched pdu is more safe, or not? S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137 535 E-mail.: supp...@feldhost.cz www.feldhost.cz - FeldHost™ – profesionální hostingové a serverové služby za adekvátní ceny. FELDSAM s.r.o. V rohu 434

Re: [ClusterLabs] epic fail

Hmm, so when you know, that it happens also when putting node standy, them why you run yum update on live cluster, it must be clear that node will be fenced. Would you post your pacemaker config? + some logs? S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137 535 E-mail.: supp

Re: [ClusterLabs] Two nodes cluster issue

APC AP7921 is just for 200€ on ebay. S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137 535 E-mail.: supp...@feldhost.cz www.feldhost.cz - FeldHost™ – profesionální hostingové a serverové služby za adekvátní ceny. FELDSAM s.r.o. V rohu 434/3 Praha 4 – Libuš, PSČ 142 00 IČ: 290

Re: [ClusterLabs] Two nodes cluster issue

Hello, you have to use second fencing device, for ex. APC Switched PDU. https://wiki.clusterlabs.org/wiki/Configure_Multiple_Fencing_Devices_Using_pcs S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137 535 E-mail.: supp...@feldhost.cz www.feldhost.cz - FeldHost™ – profesionální

Re: [ClusterLabs] epic fail

You can not update running cluster! First you need put node standby, check if all resources stopped and them do what you need. This was unfortunately your fail :( S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421 944 137 535 E-mail.: supp...@feldhost.cz www.feldhost.cz - FeldHost

[ClusterLabs] GFS2 Errors

err vmscan: shrink_slab: gfs2_glock_shrink_scan+0x0/0x2f0 [gfs2] negative objects to delete nr=-64 Would somebody explain this errors? cluster is looks like working normally. I enabled vm.zone_reclaim_mode = 1 on nodes... Thank you! S pozdravem Kristián Feldsam Tel.: +420 773 303 353, +421