Hi Ryota, as pointed out by Makrand it can sometimes happen, mainly in environments with high VR load / throughput. In some cases we do advise an upgrade of the system VM service offering to give then more CPU and Memory resources, but I wouldn’t suggest that in your case without knowing the full picture.
As already mentioned - with newer versions of CloudStack more issues will have been fixed and you will be less likely to have any problems. Regards, Dag Sonstebo Cloud Architect ShapeBlue On 12/01/2016, 07:46, "Makrand" <makrandsa...@gmail.com> wrote: >Ryota, > >I've observed many issue with VR (CS 4.3), especially when they are running >for long time and handle considerable amount of traffic (more number of >VMs). Sometimes you will have /var full and sometimes VRs just don't hand >out any IPs to newly created VMs. Doing (clean) network restart works for >90% of networks issues. I believe newer versions of CS have much better >templates for VR and less issues. > >Was there much activity happening on your VR when dnsmsq service stopped? > >Makrand > >On Tue, Jan 12, 2016 at 11:32 AM, 丸子良太 / MARUKO，RYOUTA < >ryota.maruko...@hitachi-solutions.com> wrote: > >> Dear Dag, >> >> Thank you for your answer. >> >> I checked the VR log(/var/log/kern.log). >> It shows that the VR had been out of memory, >> and OOMKiller on VR occurred to stop apache2 & dnsmasq service. >> >> Do you have a such experience(out of memory on the VR)? >> >> Regards >> >> ************************************************** >> Ryota Maruko >> Hitachi Solusions East Japan,Ltd. >> HPC Group >> PHS：070-6954-1466 FAX:022-266-2247 >> mailto:ryota.maruko...@hitachi-solutions.com >> ************************************************** >> >> >-----Original Message----- >> >From: Dag Sonstebo [mailto:dag.sonst...@shapeblue.com] >> >Sent: Thursday, January 07, 2016 6:27 PM >> >To: users@cloudstack.apache.org >> >Subject: [!]Re: CloudStack4.2.1 dnsmasq service down on VR >> > >> >Hi Ryouta, >> > >> >there shouldn’t be any requirements for restarting VRs on a regular >> basis, but obviously do it (or restart network with >> >cleanup) when you hit problems. >> > >> >Having your VR up for a year is not bad going, and there could obviously >> be a number of root causes for the dnsmasq service >> >stopping. Also keep in mind 4.2 is a few years old now, and any issues or >> bugs will most likely be fixed in later releases. >> > >> >Regards, >> > >> >Dag Sonstebo >> >Cloud Architect >> >ShapeBlue >> > >> > >> > >> > >> > >> > >> > >> >ShapeBlue <http://www.shapeblue.com> Dag Sonstebo >> >ShapeBlue >> >d: | s: +44 203 603 0540 <tel:|%20s:%20+44%20203%20603%200540> >> >e: dag.sonst...@shapeblue.com | t: <mailto: >> dag.sonst...@shapeblue.com%20|%20t:> | w: >> >www.shapeblue.com <http://www.shapeblue.com> >> >a: 53 Chandos Place, Covent Garden London WC2N 4HS UK >> > >> >Shape Blue Ltd is a company incorporated in England & Wales. ShapeBlue >> Services India LLP is a company incorporated in >> >India and is operated under license from Shape Blue Ltd. Shape Blue >> Brasil Consultoria Ltda is a company incorporated >> >in Brasil and is operated under license from Shape Blue Ltd. ShapeBlue SA >> Pty Ltd is a company registered by The Republic >> >of South Africa and is traded under license from Shape Blue Ltd. >> ShapeBlue is a registered trademark. >> >This email and any attachments to it may be confidential and are intended >> solely for the use of the individual to whom >> >it is addressed. Any views or opinions expressed are solely those of the >> author and do not necessarily represent those >> >of Shape Blue Ltd or related companies. If you are not the intended >> recipient of this email, you must neither take any >> >action based upon its contents, nor copy or show it to anyone. Please >> contact the sender if you believe you have received >> >this email in error. >> > >> > >> > >> >On 07/01/2016, 06:07, "丸子良太 / MARUKO，RYOUTA" < >> ryota.maruko...@hitachi-solutions.com> wrote: >> > >> >>Hello. >> >> >> >>Please tearch me about the problem. >> >> >> >>I made 2 VMs(VM1/VM2) one year ago. >> >>A few days ago, I tried to ping from VM1 to VM2. >> >>But it was unrearchable, previously it was no problem. >> >> >> >>"# ping VM2.domainXXX" (.domainXXX is the guestnetwork setting domain) >> >> >> >>I checked up the VR log, So "dnsmasq" service on VR was down. >> >>I don't know why the service was down. >> >>Will it be better that I periodically restart VR? >> >> >> >>~~~~~~ >> >>CloudStack 4.2.1 >> >>XenServer 6.1.0 >> >>~~~~~~ >> >> >> >>Regard. >> >> >> > >> >Find out more about ShapeBlue and our range of CloudStack related >> services: >> >IaaS Cloud Design & Build < >> http://shapeblue.com/iaas-cloud-design-and-build//> | CSForge – rapid >> IaaS deployment >> >framework <http://shapeblue.com/csforge/> >> >CloudStack Consulting <http://shapeblue.com/cloudstack-consultancy/> | >> CloudStack Software Engineering >> ><http://shapeblue.com/cloudstack-software-engineering/> >> >CloudStack Infrastructure Support < >> http://shapeblue.com/cloudstack-infrastructure-support/> | CloudStack >> Bootcamp >> >Training Courses <http://shapeblue.com/cloudstack-training/> >> >> > > >-- >Best, >Makrand Find out more about ShapeBlue and our range of CloudStack related services: IaaS Cloud Design & Build<http://shapeblue.com/iaas-cloud-design-and-build//> | CSForge – rapid IaaS deployment framework<http://shapeblue.com/csforge/> CloudStack Consulting<http://shapeblue.com/cloudstack-consultancy/> | CloudStack Software Engineering<http://shapeblue.com/cloudstack-software-engineering/> CloudStack Infrastructure Support<http://shapeblue.com/cloudstack-infrastructure-support/> | CloudStack Bootcamp Training Courses<http://shapeblue.com/cloudstack-training/>
