Re: [Linux-HA] How to setup a 2 node active/passive apache2 cluster for Proof of Concept
On Friday 29 May 2009 14:44:55 Bernie Wu wrote: > Hi Les, > Currently, there is no database or filesystem on the active system that > needs to be sync'ed. Apache currently just serves up static pages. It's > too early in our POC for something fancy. Syncing only really works if people upload files and expect them to persist past their current "session". With throw-away uploads (i.e. they click on upload and get back some output) it's not going to do anything, and with fancier stuff like data entry via multiple CGI forms you'll want DRBD. And if you have stateful stuff like applet-servlet apps, those will break during failover. Dima -- Dimitri Maziuk Programmer/sysadmin BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] How to setup a 2 node active/passive apache2 cluster for Proof of Concept
Hi Les, Currently, there is no database or filesystem on the active system that needs to be sync'ed. Apache currently just serves up static pages. It's too early in our POC for something fancy. Bernie -Original Message- From: linux-ha-boun...@lists.linux-ha.org [mailto:linux-ha-boun...@lists.linux-ha.org] On Behalf Of Les Mikesell Sent: Friday, May 29, 2009 11:25 AM To: General Linux-HA mailing list Subject: Re: [Linux-HA] How to setup a 2 node active/passive apache2 cluster for Proof of Concept Dimitri Maziuk wrote: > Bernie Wu wrote: >> The company I work for wants us to start investigating HA. >> My first POC setup was a 2 node cluster with a floating IP and that worked >> out quite well. >> Now the second POC was to work with an application, in this case, apache2 in >> a active/passive configuration. >> My question is this. Do I need to setup a third node to serve as the quorum >> node or can I work with 2 nodes. > > If your setup is v1-style active/passive, all you need to do is add > httpd to haresources line (and make sure it's not started by init). > That's for proof of concept. IRL you may want to throw in at least mon, > possibly stonith -- although I haven't seen a split brain problem in my > setup (but then again, mine usually fail over when I upgrade the kernel). Apache typically won't do anything until a request hits it, which won't happen on the machine that doesn't have the floating IP, so it isn't likely to have a split-brain issue and doesn't even matter if it is running all the time on the passive machine. However, you need to think about any state information that is updated/maintained on the active system. Is there a backend database or anything written to the filesystem that has to be kept in sync? -- Les Mikesell lesmikes...@gmail.com ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems The information contained in this e-mail message is intended only for the personal and confidential use of the recipient(s) named above. This message may be an attorney-client communication and/or work product and as such is privileged and confidential. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] How to setup a 2 node active/passive apache2 cluster for Proof of Concept
Hi Dima, Thanks for your reply. However, I'm using Heartbeat V2 which doesn't use the haresources file. Bernie -Original Message- From: linux-ha-boun...@lists.linux-ha.org [mailto:linux-ha-boun...@lists.linux-ha.org] On Behalf Of Dimitri Maziuk Sent: Friday, May 29, 2009 10:52 AM To: General Linux-HA mailing list Subject: Re: [Linux-HA] How to setup a 2 node active/passive apache2 cluster for Proof of Concept Bernie Wu wrote: > The company I work for wants us to start investigating HA. > My first POC setup was a 2 node cluster with a floating IP and that worked > out quite well. > Now the second POC was to work with an application, in this case, apache2 in > a active/passive configuration. > My question is this. Do I need to setup a third node to serve as the quorum > node or can I work with 2 nodes. If your setup is v1-style active/passive, all you need to do is add httpd to haresources line (and make sure it's not started by init). That's for proof of concept. IRL you may want to throw in at least mon, possibly stonith -- although I haven't seen a split brain problem in my setup (but then again, mine usually fail over when I upgrade the kernel). Dima ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems The information contained in this e-mail message is intended only for the personal and confidential use of the recipient(s) named above. This message may be an attorney-client communication and/or work product and as such is privileged and confidential. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] How to setup a 2 node active/passive apache2 cluster for Proof of Concept
Dimitri Maziuk wrote: > Bernie Wu wrote: >> The company I work for wants us to start investigating HA. >> My first POC setup was a 2 node cluster with a floating IP and that worked >> out quite well. >> Now the second POC was to work with an application, in this case, apache2 in >> a active/passive configuration. >> My question is this. Do I need to setup a third node to serve as the quorum >> node or can I work with 2 nodes. > > If your setup is v1-style active/passive, all you need to do is add > httpd to haresources line (and make sure it's not started by init). > That's for proof of concept. IRL you may want to throw in at least mon, > possibly stonith -- although I haven't seen a split brain problem in my > setup (but then again, mine usually fail over when I upgrade the kernel). Apache typically won't do anything until a request hits it, which won't happen on the machine that doesn't have the floating IP, so it isn't likely to have a split-brain issue and doesn't even matter if it is running all the time on the passive machine. However, you need to think about any state information that is updated/maintained on the active system. Is there a backend database or anything written to the filesystem that has to be kept in sync? -- Les Mikesell lesmikes...@gmail.com ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] How to setup a 2 node active/passive apache2 cluster for Proof of Concept
Bernie Wu wrote: > The company I work for wants us to start investigating HA. > My first POC setup was a 2 node cluster with a floating IP and that worked > out quite well. > Now the second POC was to work with an application, in this case, apache2 in > a active/passive configuration. > My question is this. Do I need to setup a third node to serve as the quorum > node or can I work with 2 nodes. If your setup is v1-style active/passive, all you need to do is add httpd to haresources line (and make sure it's not started by init). That's for proof of concept. IRL you may want to throw in at least mon, possibly stonith -- although I haven't seen a split brain problem in my setup (but then again, mine usually fail over when I upgrade the kernel). Dima ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] resource not failover
Hi Dejan After changing to OCF RA, it is working fine. however, i would like to know what does action failed (rc=1) mean and why there is a problem within LSB? Thanks for your help. Best regards Joe -Original Message- From: linux-ha-boun...@lists.linux-ha.org [mailto: linux-ha-boun...@lists.linux-ha.org] On Behalf Of Dejan Muhamedagic Sent: Tuesday, May 26, 2009 11:23 PM To: General Linux-HA mailing list Subject: Re: [Linux-HA] resource not failover Hi, On Thu, May 21, 2009 at 06:34:06PM +0800, joe tse wrote: > i'm a newbie of Heartbeat. Currently, i configure two nodes cluster with > postgresql. Everything is working fine. However, once i stop postgresql from > shell "rcpostgres stop". It does not failover and from the crm_mon just show > like below. Please help is there a way to make it work. Thanks everyone. > > > Last updated: Thu May 21 18:32:51 2009 > Current DC: node-1 (2d3f1c8c-1f57-48d6-94fe-634efde56e9f) > 2 Nodes configured. > 2 Resources configured. > > > Node: node-1 (2d3f1c8c-1f57-48d6-94fe-634efde56e9f): online > Node: node-2 (07ef1d66-c3ec-45b3-a3d7-bd144ea3a320): online > > Master/Slave Set: r0 > drbd_module:0 (ocf::heartbeat:drbd): Master node-1 > drbd_module:1 (ocf::heartbeat:drbd): Started node-2 > > Failed actions: > postgresql_status_6 (node=hklnxdvm27-2, call=111, rc=7): complete > postgresql_stop_0 (node=hklnxdvm27-2, call=114, rc=1): complete The postgresql stop action failed (rc=1). Any reason not to use the packaged pgsql OCF RA? Thanks, Dejan > Regards, > Joe > ___ > Linux-HA mailing list > Linux-HA@lists.linux-ha.org > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
[Linux-HA] usage heartbeat x Oracle XE
Morning, I am trying to configure the user has to the Oracle, but I can not configure correctly, I read the script / usr / lib / ocf / resource.d / heartbeat / oracle and it shows as an example: node1 10.0.0.170 oracle::RK1::/oracle/10.2::orark1 what is RK1? what is orark1? tanks! Rafael - Uol rn.n...@uol.com.br skype: rn.neto ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
[Linux-HA] Re sources wont run anywhere when PingNode is unreachable
Hi all, I'm having problems getting a split-brain to work (for demo, yes that's right). Basically, I have an active/passive cluster both configured with pingd like below. When the ping node is not reachable on the primary/active (i.e. I unplug the cable..), a failover occurs to the backup and vice-versa. However, I expect that when the ping node is not reachable from both nodes, a split-brain should occur resulting in the cluster resource running on both nodes at the same time. I need this to happen for demonstration. I'm pretty sure it's to do my config but not sure what to change so that a split-brain would occur when both cluster nodes cannot ping the ping node. My cib.xml file is attached and my ha.cf file is displayed below. http://www.nabble.com/file/p23762887/cib.xml cib.xml gabbep My ha.cf file: use_logd on udpport 694 keepalive 2 #2 seconds interval between heartbeats deadtime 10 initdead 20 bcast eth0 bond0 #send heartbeats on eth0 and bond0 for redundancy respawn root /usr/lib/heartbeat/pingd -m 100 -d 5s # failover on network failures ping 1.2.3.4 #apiauth default uid=root node primary backup crm yes #enable Heartbeat V2-style w/ cluster manager #auto_failback directive only applies to R1 style haresources. The corresponding attribute in R2 is the resource_stickiness (in the CIB file) #auto_failback yes PS. surprisingly, a failback still occurs albeit it's commented out in the ha.cf file. Any help will be greatly appreciated. -- View this message in context: http://www.nabble.com/Resources-wont-run-anywhere-when-PingNode-is-unreachable-tp23762887p23762887.html Sent from the Linux-HA mailing list archive at Nabble.com. ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] allow_migrate does not allow to migrate LIVE a Xen VM
This must be a meta attribute not an instance attribute, and AFAICS in Pacemaker 1.0.3 it's now named "allow-migrate", not "allow_migrate". Andrew, please correct me if I'm wrong. Cheers, Florian On 2009-05-27 23:30, Jan Kalcic wrote: > Hi All, > > as in subject, I configured a simple Xen resource with the attribute > "allow_migrate" "true" in order to migrate it live but it's always > stopped and re-started. Strange is that with the xm tool I can migrate > it live without any problem. > > pacemaker-1.0.3 on SLES 11 > > Any hints? > > Thanks, > Jan signature.asc Description: OpenPGP digital signature ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
[Linux-HA] Looking for impressive success stories
Hi, Since the "Success Stories" link of linux-ha.org is quite outdated we are looking for some recent and impressive stories that could convice the readers to use pacemaker cluster resource manager. So we could add these to clusterlabs.org. Anybody please feel free to mail me your stories. Alternatively you can mail it to Andrew. Greetings, -- Dr. Michael Schwartzkopff MultiNET Services GmbH Addresse: Bretonischer Ring 7; 85630 Grasbrunn; Germany Tel: +49 - 89 - 45 69 11 0 Fax: +49 - 89 - 45 69 11 21 mob: +49 - 174 - 343 28 75 mail: mi...@multinet.de web: www.multinet.de Sitz der Gesellschaft: 85630 Grasbrunn Registergericht: Amtsgericht München HRB 114375 Geschäftsführer: Günter Jurgeneit, Hubert Martens --- PGP Fingerprint: F919 3919 FF12 ED5A 2801 DEA6 AA77 57A4 EDD8 979B Skype: misch42 ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] clean CIB
Am Freitag, 29. Mai 2009 15:06:29 schrieb Koen Verwimp: > Hi, > > > > What is the easiest way to clear the whole CIB configuration? > > > > Thanks, > > Koen cibadmin -E --force Beware if you have a heartbeat based cluster. The node information is stored elsewhere, too. -- Dr. Michael Schwartzkopff MultiNET Services GmbH Addresse: Bretonischer Ring 7; 85630 Grasbrunn; Germany Tel: +49 - 89 - 45 69 11 0 Fax: +49 - 89 - 45 69 11 21 mob: +49 - 174 - 343 28 75 mail: mi...@multinet.de web: www.multinet.de Sitz der Gesellschaft: 85630 Grasbrunn Registergericht: Amtsgericht München HRB 114375 Geschäftsführer: Günter Jurgeneit, Hubert Martens --- PGP Fingerprint: F919 3919 FF12 ED5A 2801 DEA6 AA77 57A4 EDD8 979B Skype: misch42 ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
[Linux-HA] clean CIB
Hi, What is the easiest way to clear the whole CIB configuration? Thanks, Koen ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] Node Selection on Failover
On Tue, May 26, 2009 at 10:07 PM, Kevin Harms wrote: > > I have setup an 8 node cluster. The cluster has 15 resources. I > setup the system such that all 15 resources are distributed on the 7 > primary nodes when the cluster starts up. I would like it such that > when a node fails, the resources are migrated to the backup node first > and then subsequently balancing the resource distribution among the > remaining nodes. I'm running HB 2.1.4. It is my understanding that if > the score values are equal then the node with the fewest resources > will be selected as the target node. During my testing I don't find > this to be the case. It seems like the node selected is the first node > listed in the crm_mon output: > > Node: fs24 (1ff11fab-a613-4335-b302-33dd812bf99b): online > Node: fs23 (85a8a44b-9e1e-4aaa-bedf-d023398b5553): online > Node: fs22 (bf727f13-62d9-450b-b389-86353994ffe1): online > Node: fs21 (4d36cf33-7540-45e5-b6ae-d3d34661de75): online > Node: fs20 (11d49119-471f-4ce1-bbed-2603edee32fc): online > Node: fs19 (f10a906e-5ad2-4e49-af91-f9ebbfa2b52d): online > Node: fs18 (d538b892-ddee-4dac-aaf1-e29dcf85817b): online > Node: fs17 (9073d06c-e040-46f9-9a69-9c3e7719333c): online > > Can anyone confirm the behavior of Heartbeat 2.1.4 for node > selection in the case where scores are equal? I'd have to see your config to be able to comment ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] Recovering a Fragile CIB after Debian Lenny upgrade
On Wed, May 27, 2009 at 7:57 PM, Imran Chaudhry wrote: > One out-standing question I have is that if I reboot foo, then the > resources will migrate to bar but when foo comes back up the resources > migrate back to foo. I did not expect this to happen since I have > "auto_failback off" in ha.cf. Is this because I have "crm on" so that it > ignores ha.cf? Not all of it, but yes, the auto_failback option has no meaning in a crm cluster. > > In my production scenario this was actually OK and did not cause a > problem when it happened (because other services on foo were configured > correctly). However, I would not like the resources to failback > automatically, This will stop it from moving automatically # crm configure property default-resource-stickiness=INFINITY > I would like to do so manually via hb_gui/CLI Use crm_resource --migrate for this purpose. I think there is also a crm shell command too. > or at least > have a toggle for this behaviour. How do I do this? Any pointers > welcome. ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] allow_migrate does not allow to migrate LIVE a Xen VM
I finally got it. Replaced underscore with dash as indicated by Andrew few messages ago. "In 1.0.x most underscores were replaced with dashes. So try changing allow_migrate to allow-migrate" The meta attribute "allow-migrate" does the job for me. Thanks Andrew. I think an update into the Xen RA would be really handy for those who have this issues (I found a lot of people eventually). The information contained into the OCF RA cause big headaches. A documentation update would be really appreciated too. HTH Thanks, Jan Jan Kalcic wrote: > The following is the xml for the resource > > > >name="target-role" value="started"/> > > >start-delay="20" timeout="60"/> >start-delay="10" timeout="60"/> >timeout="60"/> >start-delay="10" timeout="120"/> > > >name="xmfile" value="/etc/xen/vm/sles11"/> >name="allow_migrate" value="true"/> > > > > Thanks, > Jan > > Jan Kalcic wrote: > >> Hi All, >> >> as in subject, I configured a simple Xen resource with the attribute >> "allow_migrate" "true" in order to migrate it live but it's always >> stopped and re-started. Strange is that with the xm tool I can migrate >> it live without any problem. >> >> pacemaker-1.0.3 on SLES 11 >> >> Any hints? >> >> Thanks, >> Jan >> >> >> > > > ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] Resources get restarted when a node joins the cluster
On Fri, May 29, 2009 at 10:30 AM, Tobias Appel wrote: > Well, exactly what I expected happened! > I set the 2nd node to standby - it had no resources running. We stopped > Heartbeat on the 2nd node and did some maintenance. When we started > Heartbeat again it joined the cluster as Online-standby and guess what! > > The resources on node 01 were getting stopped and restarted by heartbeat! > > Now why the hell did heartbeat do this and how can I stop heartbeat from > doing this in the future? Attach a hb_report archive to a bugzilla entry so that the developers have a chance to fix it :-) I've seen this with clones where the PE isn't always smart enough to do the right thing, but never for groups. > > Another very weird thing was that it did not stop all the resources. > We have configured one resource group only, containing 6 resources in > the following order: > mount filesystem > virtual ip > afd > cups > nfs > mailto notification > > it stopped the mailto and tried to stop NFS which failed since NFS was > being in use, instead of going into an unmanage state, it just left it > running and started mailto again. > No error was shown in crm_mon and the cluster luckily for us kept on > running. But we did get 2 emails from mailto. > > Now why did Heartbeat behave like this? We even had a constraint in > place which forces the resource group on node 01 (score infinity). > > If anyone can bring any light on this matter please do. This is > essentiell for me. > > Regards, > Tobi > > > Andrew Beekhof wrote: >> On Tue, May 26, 2009 at 2:56 PM, Tobias Appel wrote: >>> Hi, >>> >>> In the past sometimes the following happened on my Heartbeat 2.1.14 cluster: >>> >>> 2-Node Cluster, all resources run one node - no location constraints >>> Now I restarted the "standby" node (which had no resources running but >>> was still active inside the cluster). >>> When it came back online and joined the cluster again 3 different >>> scenarios happened: >>> >>> 1. all resources failed over to the newly joined node >>> 2. all resources stay on the current node but get restarted! >> >> Usually 1 and 2 occur when services are started by the node when it >> boots up (ie. not by the cluster). >> The cluster then detects this, stops them everywhere and starts them >> on just one node. >> >> Cluster resources must never be started automatically by the node at boot >> time. >> >>> 3. nothing happens >>> >>> Now I don't know why 1. or 2. happen but I remember seeing a mail on the >>> mailing list from someone with a similiar problem. Is there any way to >>> make sure heartbeat does NOT touch the resources, especially not >>> restarting or re-locating them? >>> >>> Thanks in advance, >>> Tobi >>> ___ >>> Linux-HA mailing list >>> Linux-HA@lists.linux-ha.org >>> http://lists.linux-ha.org/mailman/listinfo/linux-ha >>> See also: http://linux-ha.org/ReportingProblems >>> >> ___ >> Linux-HA mailing list >> Linux-HA@lists.linux-ha.org >> http://lists.linux-ha.org/mailman/listinfo/linux-ha >> See also: http://linux-ha.org/ReportingProblems > > ___ > Linux-HA mailing list > Linux-HA@lists.linux-ha.org > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems > ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] How to setup a 2 node active/passive apache2 cluster for Proof of Concept
Hi, On Thu, May 28, 2009 at 09:03:10PM -0400, Bernie Wu wrote: > Hi Listers, > I am a complete newbie when it comes to HA. > The company I work for wants us to start investigating HA. > My first POC setup was a 2 node cluster with a floating IP and that worked > out quite well. > Now the second POC was to work with an application, in this case, apache2 in > a active/passive configuration. > My question is this. Do I need to setup a third node to serve > as the quorum node or can I work with 2 nodes. You can use two nodes, but make sure that you have stonith configured. > If I went with > 2 nodes, do I still use pingd and can I use the same interface > that heartbeat uses ? Yes. > Also how many interfaces do I need for HA ? At least two. One can work, but it won't be supported. > Currently, each node has eth0 and hsi0. The floating IP uses eth0. Heartbeat > uses hsi0. > Our setup is : > SLES10- SP2, zVM 5.3 and heartbeat-2.1.3-0.9. > Any advice will be much appreciated. Thanks, Dejan > > TIA > Bernie > > > The information contained in this e-mail message is intended only for the > personal and confidential use of the recipient(s) named above. This message > may be an attorney-client communication and/or work product and as such is > privileged and confidential. If the reader of this message is not the > intended recipient or an agent responsible for delivering it to the intended > recipient, you are hereby notified that you have received this document in > error and that any review, dissemination, distribution, or copying of this > message is strictly prohibited. If you have received this communication in > error, please notify us immediately by e-mail, and delete the original > message. > ___ > Linux-HA mailing list > Linux-HA@lists.linux-ha.org > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] new doc about stonith/fencing
Really interesting. I would have appreciated some more example (they are always welcome) but still very interesting. Thanks, Jan Dejan Muhamedagic wrote: > Hi, > > Trying to make it a bit less mysterious, I wrote something about > fencing and stonith quite a while ago and then forgot to share > the link. Sorry about that. > > Here it is: > > http://www.clusterlabs.org/mediawiki/images/f/f2/Crm_fencing.pdf > > As usual, constructive criticism/suggestions/etc are welcome. > I won't be able to read your impressions for the next two weeks, > but will sure look forward to see them afterwards. > > Cheers, > > Dejan > ___ > Linux-HA mailing list > Linux-HA@lists.linux-ha.org > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems > > ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
[Linux-HA] Antwort: Re: Resources get restarted when a node joins the cluster
I once had similar behaviour on one of my clusters. the reason was that the LSB-scritp of one of the resources (for which no ocf agent is written yet) was reporting the resource as running even if it was not. that caused heartbeat to think that the ressources where running on both nodes, which in turn caused the system to stop it on all nodes and afterwards start it on the right one again. Mit freundlichen Grüßen / Best regards, Robert Köppl System Administration --- Phone: +43 3842 805-910 Fax: +43 3842 805-500 robert.koeppl@@knapp.com www.KNAPP.com --- KNAPP Systemintegration GmbH Waltenbachstrasse 9 8700 Leoben, Austria --- Commercial register number: FN 138870x Commercial register court: Leoben --- The information in this e-mail (including any attachment) is confidential and intended to be for the use of the addressee(s) only. If you have received the e-mail by mistake, any disclosure, copy, distribution or use of the contents of the e-mail is prohibited, and you must delete the e-mail from your system. As e-mail can be changed electronically KNAPP assumes no responsibility for any alteration to this e-mail or its attachments. KNAPP has taken every reasonable precaution to ensure that any attachment to this e-mail has been swept for virus. However, KNAPP does not accept any liability for damage sustained as a result of such attachment being virus infected and strongly recommend that you carry out your own virus check before opening any attachment. ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] Resources get restarted when a node joins the cluster
Well, exactly what I expected happened! I set the 2nd node to standby - it had no resources running. We stopped Heartbeat on the 2nd node and did some maintenance. When we started Heartbeat again it joined the cluster as Online-standby and guess what! The resources on node 01 were getting stopped and restarted by heartbeat! Now why the hell did heartbeat do this and how can I stop heartbeat from doing this in the future? Another very weird thing was that it did not stop all the resources. We have configured one resource group only, containing 6 resources in the following order: mount filesystem virtual ip afd cups nfs mailto notification it stopped the mailto and tried to stop NFS which failed since NFS was being in use, instead of going into an unmanage state, it just left it running and started mailto again. No error was shown in crm_mon and the cluster luckily for us kept on running. But we did get 2 emails from mailto. Now why did Heartbeat behave like this? We even had a constraint in place which forces the resource group on node 01 (score infinity). If anyone can bring any light on this matter please do. This is essentiell for me. Regards, Tobi Andrew Beekhof wrote: > On Tue, May 26, 2009 at 2:56 PM, Tobias Appel wrote: >> Hi, >> >> In the past sometimes the following happened on my Heartbeat 2.1.14 cluster: >> >> 2-Node Cluster, all resources run one node - no location constraints >> Now I restarted the "standby" node (which had no resources running but >> was still active inside the cluster). >> When it came back online and joined the cluster again 3 different >> scenarios happened: >> >> 1. all resources failed over to the newly joined node >> 2. all resources stay on the current node but get restarted! > > Usually 1 and 2 occur when services are started by the node when it > boots up (ie. not by the cluster). > The cluster then detects this, stops them everywhere and starts them > on just one node. > > Cluster resources must never be started automatically by the node at boot > time. > >> 3. nothing happens >> >> Now I don't know why 1. or 2. happen but I remember seeing a mail on the >> mailing list from someone with a similiar problem. Is there any way to >> make sure heartbeat does NOT touch the resources, especially not >> restarting or re-locating them? >> >> Thanks in advance, >> Tobi >> ___ >> Linux-HA mailing list >> Linux-HA@lists.linux-ha.org >> http://lists.linux-ha.org/mailman/listinfo/linux-ha >> See also: http://linux-ha.org/ReportingProblems >> > ___ > Linux-HA mailing list > Linux-HA@lists.linux-ha.org > http://lists.linux-ha.org/mailman/listinfo/linux-ha > See also: http://linux-ha.org/ReportingProblems ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
[Linux-HA] Resource doesn't come online after failure-timeout has expired
Hi, I’m using Heartbeat 2.99.1 and Pacemaker 1.0.2. I have configured a resource with the migration-threshold=2 and failure-timeout=60s. When I simulate 2 resource failures per server, the resource is automatically migrated to the other node (docucluster04) as excepted. group_color: virtual-ip-alfresco allocation score on docucluster03: -100 group_color: virtual-ip-alfresco allocation score on docucluster04: 0 native_color: virtual-ip-alfresco allocation score on docucluster03: -100 native_color: virtual-ip-alfresco allocation score on docucluster04: 0 After 60s (migration-threshold) I can see the following scores, but the resource is not started back on the original node (docucluster03). group_color: virtual-ip-alfresco allocation score on docucluster03: 100 group_color: virtual-ip-alfresco allocation score on docucluster04: 0 native_color: virtual-ip-alfresco allocation score on docucluster03: 100 native_color: virtual-ip-alfresco allocation score on docucluster04: 0 I have tried to set the ‘ cluster-recheck-interval’ option, this tells the cluster to periodically recalculate the ideal state of the cluster … but the resource isn’t still migrated automatically back on the original node (docucluster03) After executing cibadmin –B (bump) the resource is migrated to docucluster03. Anyone idea what to do for a automatically migration after expiring the failure-timeout? Best regards, Koen ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] Resources get restarted when a node joins the cluster
Andrew Beekhof wrote: > On Tue, May 26, 2009 at 2:56 PM, Tobias Appel wrote: > >> Hi, >> >> In the past sometimes the following happened on my Heartbeat 2.1.14 cluster: >> >> 2-Node Cluster, all resources run one node - no location constraints >> Now I restarted the "standby" node (which had no resources running but >> was still active inside the cluster). >> When it came back online and joined the cluster again 3 different >> scenarios happened: >> >> 1. all resources failed over to the newly joined node >> 2. all resources stay on the current node but get restarted! >> > > Usually 1 and 2 occur when services are started by the node when it > boots up (ie. not by the cluster). > The cluster then detects this, stops them everywhere and starts them > on just one node. > > Cluster resources must never be started automatically by the node at boot > time. > > I noticed the same behaviour. Once then the standby node is activated back again, the resources stay on the same node but get restarted. The standby server is not restarted at all and no services are started along with it. In my case the resources were Xen domains. Thanks, Jan ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] show scores per resource/node
Am Freitag, 29. Mai 2009 09:39:25 schrieb Koen Verwimp: > Hi! > > > > In Hearbeat/pacemaker scores are calculated on a per-resource basis and any > node with a negative score can’t run that resource. After calculating the > scores for a resource, the cluster then chooses the node with the highest > one. > > > > Is it possible to show the calculated score on a node for a specific > resource? > > > > Thanks, > > Koen ptest -s -L -- Dr. Michael Schwartzkopff MultiNET Services GmbH Addresse: Bretonischer Ring 7; 85630 Grasbrunn; Germany Tel: +49 - 89 - 45 69 11 0 Fax: +49 - 89 - 45 69 11 21 mob: +49 - 174 - 343 28 75 mail: mi...@multinet.de web: www.multinet.de Sitz der Gesellschaft: 85630 Grasbrunn Registergericht: Amtsgericht München HRB 114375 Geschäftsführer: Günter Jurgeneit, Hubert Martens --- PGP Fingerprint: F919 3919 FF12 ED5A 2801 DEA6 AA77 57A4 EDD8 979B Skype: misch42 ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
[Linux-HA] show scores per resource/node
Hi! In Hearbeat/pacemaker scores are calculated on a per-resource basis and any node with a negative score can’t run that resource. After calculating the scores for a resource, the cluster then chooses the node with the highest one. Is it possible to show the calculated score on a node for a specific resource? Thanks, Koen ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
