On Thu, Jul 24, 2014 at 10:47 AM, Nirmal Fernando <nirmal070...@gmail.com> wrote:
> > > > On Mon, Jun 30, 2014 at 5:11 PM, Dinesh Bandara <dine...@wso2.com> wrote: > >> Hi all, >> >> I have faced in to a situation that need to update existing cartridge >> instances without interrupt the process. AFAIU there are two types of >> updates that need to be applied. >> >> 1. OS level/ Security updates >> 2. Application level updates (Load balancer, PHP, MySQL) >> >> >> *Patching OS level/ Security updates* >> >> Since this is a mandatory update we have to shutdown the server and then >> need to restart it after successfully update the patch. But this will >> interrupt the whole process. >> Cartridge agent related updates can be consider as OS level update. >> > > I don't think we need to. IMO Cartridge agent related updates can be > applied using the same process of marking the state of the member to > maintenance mode (before agent restarts). > >> *Solution* >> >> - Spawn a new instance and apply the updates. >> - Terminate exiting instance >> - Repeat the above steps until spawn new instances on behalf of >> existing instances >> >> > We can't spawn new instances manually. We should let stratos do that. To > do an OS level update etc. we should terminate the instance from the IaaS > level and let Stratos spin a replacement instance (with the new updates). > > Preferably, we need a Stratos API to automate the manual process involved > here. > Yes, the above solution need to implement through Startos. sorry I have missed that line in the first mail > >> >> *Patching Application level updates* >> >> Status of the cartridge instance set into 'Maintenance' mode, apply >> updates and then set again as an 'Active' instance >> >> *Expose to user* >> >> Introduce new rest endpoint via SM which will provide the access to patch >> selected cluster. >> > > Selected member of a cluster rather. > Assume we have 100 members in the cluster, if so user has to do it for 100 times > >> As the first step I would like to start with the "patching OS level >> updates". >> >> Highly appreciate your thoughts on this. >> >> Thanks, >> -- >> *Dinesh Bandara* >> Software Engineer >> WSO2 Inc.; http://wso2.com >> lean.enterprise.middleware >> >> > > > -- > Best Regards, > Nirmal > > Nirmal Fernando. > PPMC Member & Committer of Apache Stratos, > Senior Software Engineer, WSO2 Inc. > > Blog: http://nirmalfdo.blogspot.com/ > -- *Dinesh Bandara* Software Engineer WSO2 Inc.; http://wso2.com lean.enterprise.middleware
