Re: [Linux-HA] heartbeat - execute a script on a running node when the other node is back?
Hi, On Mon, Nov 16, 2009 at 02:39:52PM +0100, Dominik Klein wrote: > Tomasz Chmielewski wrote: > > Dejan Muhamedagic wrote: > >> Hi, > >> > >> On Sun, Nov 15, 2009 at 09:09:53PM +0100, Tomasz Chmielewski wrote: > >>> I have two nodes, node_1 and node_2. > >>> > >>> node_2 was down, but is now up. > >>> > >>> > >>> How can I execute a custom script on node_1 when it detects that node_2 > >>> is back? > >> That's not possible. What would you want to with that script? > > > > I have two PostgreSQL servers running; pgpool-ii is started by Heartbeat > > to distribute the load (reads) among two servers and to send writes to > > both servers. > > > > When one PostgreSQL server fails, the setup will still work fine. When > > the failed PostgreSQL instance is back, the data should be first > > "synchronized" from the running PostgreSQL server to a server which was > > failed a while ago. > > > > It is best if such a script could be started by Heartbeat running on the > > active node, as soon as it detects that the other node is back. > > If you need such thing - I'd personally be most comfortable with not > starting the cluster at boot time. Then you can do whatever you need to > do and then - when you _know_ everything is right, the script is done > etc. - start the cluster software. > > Just my personal preference. It would be mine too. Nothing wrong to have a script for that, but best to run it by hand so that you can check the database. Besides, your nodes shouldn't be disappearing that often. Thanks, Dejan > Regards > Dominik > ___ > 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] Announce: LINBIT to assume stewardship for Heartbeat code base, with permission from the Board
Dear members of the Linux-HA community, This is to announce that LINBIT, with the kind permission from the Linux-HA project board, will act as the "steward" of the Heartbeat cluster messaging layer code base, from this point forward. This is a summary of our motivation and plans related to that role. What does this entail? - LINBIT will assume responsibility for bug fixes for the Heartbeat code base, currently hosted at http://hg.linux-ha.org/dev/. - LINBIT will bundle up the 3.0 beta codebase, make a 3.0 final release (currently this is planned for the month of January 2010), and subsequently make bugfix releases as deemed necessary. - LINBIT will further collaborate with the Pacemaker project to keep the existing dual-stack capability in Pacemaker. - LINBIT will continue making the public Mercurial repository available at the present location (any eventual relocation, if desired by the Board, would be publicly announced with ample advance notice). - LINBIT will administer the public mailing lists (linux-ha and linux-ha-dev) on the servers currently hosting them (again, any eventual relocation, would be publicly announced with ample advance notice). - LINBIT intends to offer improved documentation for the Heartbeat messaging layer. This is meant to consolidate the content currently found on the linux-ha.org wiki site. - LINBIT intends to offer support services for the Heartbeat/Pacemaker cluster stack (i.e. the Pacemaker cluster resource manager running on top of the Heartbeat cluster communication layer). - LINBIT will continue to respect he Board as the final authority on matters affecting the project as a whole. What does this not entail? - LINBIT has no intention to add significant features to the Heartbeat code base, or extend its functionality significantly. - LINBIT has no intention to apply changes to the licensing, development model, or collaboration model for the Linux-HA code base. - LINBIT has no intention to establish the Heartbeat code base as a _long-term_ alternative or competition to the OpenAIS/Corosync cluster messaging layer. However, we do believe that it is a valid alternative for the short to mid term, and for some configurations where OpenAIS/Corosync is currently suffering from some growing pains, - LINBIT has no intention to support or advocate continued use of Heartbeat in v1 (haresources) configurations. We will continue to recommend to switch to the Pacemaker cluster stack, now that two (technically and commercially) supported cluster messaging layers are available. At this time, the primary contact in charge of Heartbeat development matters at LINBIT is Lars Ellenberg, the person in charge of documentation is myself. The best means of relaying comments and asking questions continues to be the public mailing list. We hope that this is a useful service to the Heartbeat user community. I want to reiterate that we have no intention whatsoever to change the current, proven, community centric approach to how the Heartbeat code base is managed. We continue to welcome, and depend on, community suggestions, feedback, and collaboration. Heartbeat is a community project and will remain so. If you have any questions about our intentions and plans, please post them on this list. If for some reason you would like to discuss them off-list, please use my direct email address. Your comments are highly appreciated. Thank you very much! With best regards on behalf of LINBIT, Florian 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
Re: [Linux-HA] How to put minutes in time based rule
On Tue, Nov 10, 2009 at 11:50 AM, abhishek agrawal wrote: > I was trying to define time based rule to stop a resource in a certain > period. I want a granularity on a minute basis. like stopeed between > 9-10.30 daily.. > > for this there is no support of minutes in HA. i was trying fractional > hours as following: > > > > > > > > > > > > > should it work ..Will 10.5 correspond to 10:30 . No. But it would be a worthy feature request in bugzilla. You could use two expressions (one with operation=gt the other with lt) to achieve the desired result. ___ 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] Linux HA on Solaris 10
On Mon, Nov 16, 2009 at 2:53 PM, Tiaan Wessels wrote: > Hi, > > I am really interested in getting Linux HA working on a Solaris 10 SPARC > zone. I have downloaded Heartbeat-STABLE-2-1-STABLE-2.1.4 and executed > as root ./ConfigureMe configure and got a long list of output ending in > the following: > > configure: WARNING: The following recommended components noted earlier > are missing: > gnutls/gnutls.h, swig, gnutls/gnutls.h > We will continue but you may have lost some non-critical functionality. > configure: error: The following required components noted earlier are > missing: > glib2-devel > Please supply them and try again. > > I could not find a glib2-devel package for our platform and installing > this from source is quite difficult due to administrative and > configuration management concerns (I have special permission for HA!). > My question: Is there a command-line option to ConfigureMe or another > way to disable the component requiring glib2 ? No, because its mandatory. Nothing will compile without it. > I cannot run gmake after > the ConfigureMe completes even though it is stated only as a warning. I > could not find another way to kick start compiling. Any documents on how > to compile ? Had a look at Linux-HA but quite scarce on information on > how to compile from scratch so maybe I can document my findings at the > end and add to HA docs. > > Thanks > -- > Tiaan Wessels > Netsys International > Tel: +27 (0)12 349-2056 (Business) > +27 (0)12 349-2757 (Facsimile) > E-mail: ti...@netsys.co.za > ___ > 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] Linux HA on Solaris 10
Hi, I am really interested in getting Linux HA working on a Solaris 10 SPARC zone. I have downloaded Heartbeat-STABLE-2-1-STABLE-2.1.4 and executed as root ./ConfigureMe configure and got a long list of output ending in the following: configure: WARNING: The following recommended components noted earlier are missing: gnutls/gnutls.h, swig, gnutls/gnutls.h We will continue but you may have lost some non-critical functionality. configure: error: The following required components noted earlier are missing: glib2-devel Please supply them and try again. I could not find a glib2-devel package for our platform and installing this from source is quite difficult due to administrative and configuration management concerns (I have special permission for HA!). My question: Is there a command-line option to ConfigureMe or another way to disable the component requiring glib2 ? I cannot run gmake after the ConfigureMe completes even though it is stated only as a warning. I could not find another way to kick start compiling. Any documents on how to compile ? Had a look at Linux-HA but quite scarce on information on how to compile from scratch so maybe I can document my findings at the end and add to HA docs. Thanks -- Tiaan Wessels Netsys International Tel: +27 (0)12 349-2056 (Business) +27 (0)12 349-2757 (Facsimile) E-mail: ti...@netsys.co.za ___ 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] heartbeat - execute a script on a running node when the other node is back?
Tomasz Chmielewski wrote: > Dejan Muhamedagic wrote: >> Hi, >> >> On Sun, Nov 15, 2009 at 09:09:53PM +0100, Tomasz Chmielewski wrote: >>> I have two nodes, node_1 and node_2. >>> >>> node_2 was down, but is now up. >>> >>> >>> How can I execute a custom script on node_1 when it detects that node_2 >>> is back? >> That's not possible. What would you want to with that script? > > I have two PostgreSQL servers running; pgpool-ii is started by Heartbeat > to distribute the load (reads) among two servers and to send writes to > both servers. > > When one PostgreSQL server fails, the setup will still work fine. When > the failed PostgreSQL instance is back, the data should be first > "synchronized" from the running PostgreSQL server to a server which was > failed a while ago. > > It is best if such a script could be started by Heartbeat running on the > active node, as soon as it detects that the other node is back. If you need such thing - I'd personally be most comfortable with not starting the cluster at boot time. Then you can do whatever you need to do and then - when you _know_ everything is right, the script is done etc. - start the cluster software. Just my personal preference. Regards Dominik ___ 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] heartbeat - execute a script on a running node when the other node is back?
Dejan Muhamedagic wrote: > Hi, > > On Sun, Nov 15, 2009 at 09:09:53PM +0100, Tomasz Chmielewski wrote: >> I have two nodes, node_1 and node_2. >> >> node_2 was down, but is now up. >> >> >> How can I execute a custom script on node_1 when it detects that node_2 >> is back? > > That's not possible. What would you want to with that script? I have two PostgreSQL servers running; pgpool-ii is started by Heartbeat to distribute the load (reads) among two servers and to send writes to both servers. When one PostgreSQL server fails, the setup will still work fine. When the failed PostgreSQL instance is back, the data should be first "synchronized" from the running PostgreSQL server to a server which was failed a while ago. It is best if such a script could be started by Heartbeat running on the active node, as soon as it detects that the other node is back. -- Tomasz Chmielewski http://wpkg.org ___ 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] heartbeat - execute a script on a running node when the other node is back?
On 11/15/2009 09:09 PM, Tomasz Chmielewski wrote: > I have two nodes, node_1 and node_2. > > node_2 was down, but is now up. > > > How can I execute a custom script on node_1 when it detects that node_2 > is back? > > This is a little off the heartbeat list I guess, but we use Nagios to monitor our heartbeat clusters and you can use the eventhandler from nagios to execute scripts when there is a state change. I don't think that you would want to install nagios just for this, but in case you are running Nagios or something similar already you might try this approach. Bye, 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
Re: [Linux-HA] Lot of core dumps found - should I worry about it?
On 11/16/2009 11:27 AM, Dejan Muhamedagic wrote: >> >> Can I stop Heartbeat from creating those? > > Yes. Add "coredumps false" to ha.cf. Though if something really > goes wrong and you don't have a coredump we'd probably ask you to > reproduce :) > > Thanks, > > Dejan Thanks, that's fine by me since for the moment I just have to make sure that the root partition doesn't run full. ___ 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] heartbeat - execute a script on a running node when the other node is back?
Hi, On Sun, Nov 15, 2009 at 09:09:53PM +0100, Tomasz Chmielewski wrote: > I have two nodes, node_1 and node_2. > > node_2 was down, but is now up. > > > How can I execute a custom script on node_1 when it detects that node_2 > is back? That's not possible. What would you want to with that script? Thanks, Dejan > > -- > Tomasz Chmielewski > http://wpkg.org > ___ > 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] Lot of core dumps found - should I worry about it?
Hi, On Mon, Nov 16, 2009 at 11:12:51AM +0100, Tobias Appel wrote: > Hi, > > well Nagios informed me today that the root partition of my Heartbeat > Cluster is getting full. After a short investigation I found out that > this directory has over 2 GB of size: > > /var/lib/heartbeat/cores/root/ > > Over 250 of those files were in there: > > -rw--- 1 root root 8228864 Nov 16 11:08 core.8251 > > Heartbeat runs fine and stable though. I know that one of the two > Ethernet Interfaces I use for hb (eth1 and eth3) crashes a lot due to a > driver error (problem with SUN / NVIDIA and RedHat, no fix yet) and I > suppose that's why there is a core dump - because Heartbeat knows that > the link is down. > Other then that I don't think that anything is wrong. If you're really sure about that ... BTW, if there are core dumps which don't result from ABORT (signal 6), then it would be good to see backtraces. > Also those core dumps happen only on the active node in our two-node > cluster. None are on the passive node. > > Can I stop Heartbeat from creating those? Yes. Add "coredumps false" to ha.cf. Though if something really goes wrong and you don't have a coredump we'd probably ask you to reproduce :) Thanks, Dejan > 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] Lot of core dumps found - should I worry about it?
Hi, well Nagios informed me today that the root partition of my Heartbeat Cluster is getting full. After a short investigation I found out that this directory has over 2 GB of size: /var/lib/heartbeat/cores/root/ Over 250 of those files were in there: -rw--- 1 root root 8228864 Nov 16 11:08 core.8251 Heartbeat runs fine and stable though. I know that one of the two Ethernet Interfaces I use for hb (eth1 and eth3) crashes a lot due to a driver error (problem with SUN / NVIDIA and RedHat, no fix yet) and I suppose that's why there is a core dump - because Heartbeat knows that the link is down. Other then that I don't think that anything is wrong. Also those core dumps happen only on the active node in our two-node cluster. None are on the passive node. Can I stop Heartbeat from creating those? 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] DRBD Management Console 0.4.2
Hi, This is the next DRBD-MC beta release 0.4.2. DRBD-MC is a Java GUI that helps to configure DRBD/Pacemaker/Corosync/Openais/Heartbeat clusters. Some people are concerned that Java is too slow for GUIs and that was true years ago, but now at last it's Java GUI time! Now let's see what is new in this release. As a nod to the bleeding edge people DRBD-MC now works with Pacemaker 1.0.6 and Corosync. New Clusterlabs repositories were added as an installation option, so that you can install the latest Pacemaker releases. If Clusterlabs repositories are still too stale for you, it is possible to install from the GUI the latest clone from Pacemaker Mercurial, making the GUI only one step behind the last commit from Beekhof. The goal is to get ahead and let them catch up on DRBD-MC. Thanks to the feedback of the sysadmins out there some issues with disks not being recognized and some other misconceptions were fixed. They also found even more bugs, while clicking on things I would not dare to click. In the meantime the whole new DRBD 8.3.6 was released and they got finally configure script together, unfortunately breaking the DRBD installation from the GUI in the process. Needless to say, it is fixed now. Another new addition in this release is support for cloned groups. It still needs some work to make it easier and more intuitive to configure but at least it is now possible to enter and operate it. See some new features in the screenshot: http://oss.linbit.com/drbd-mc/img/drbd-mc-0.4.2.png You can get DRBD-MC here: http://www.drbd.org/mc/management-console/ http://oss.linbit.com/drbd-mc/drbd-mc-0.4.2.tar.gz http://oss.linbit.com/drbd-mc/DMC-0.4.2.jar You can start it with help of Java Web-Start or you can download it and start it with "java -jar DMC-0.4.2.jar" command. Here is the almost complete changelog: * offline/online detection for nodes was fixed * bogus "status failed" message while loading the cluster was removed * null pointer exception when clicking on host that is not connected was fixed * DRBD 8.3.6 installation was fixed * freezes, when adding a dependent group were fixed * block devices that do not have partitions are shown now * md_d device names for sw raids are allowed now * support for cloned groups was implemented * advanced mode check box is now global * Pacemaker installation fixes * auto option for DRBD configuration was added * start up, if there are no DRBD resources, was fixed * install from source option for Pacemaker was added * versions of installed components on every node are now shown in the node tooltips Rasto Levrinc -- : Dipl-Ing Rastislav Levrinc : DRBD-MC http://www.drbd.org/mc/management-console/ : DRBD/HA support and consulting http://www.linbit.com/ DRBD(R) and LINBIT(R) are registered trademarks of LINBIT, Austria. ___ 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
