Hi Imesh, On Sun, Nov 22, 2015 at 10:40 PM, Imesh Gunaratne <im...@apache.org> wrote:
> Hi Sajith, > > PCA executes life cycle state events at the startup and it also wait until > member initiatlized event to start its process. Therefore I do not think we > can apply patches to PCA and restart. > > There are two aspects in here as I see. 1) Applying patches to already running server and restart. 2) Applying patches to a 'fresh' server and start It would have been ideal if we can achieve both scenarios above, but yes, with the points you have mentioned (1) is not possible. I remember we had a discussion in past regarding this, did we finalized it?. So, if there is a running cluster (say,100 nodes) and if we need to apply a patch, approach would be to spawn up 'new' instances with the patches? Even in that scenario, there is no easy way to track the changes being done to the originally released binary, since the current approach is to replace the old files with patched files. The model I was thinking is to implement a model where PCA always keep the original files (backed up) and read the latest files (from a patch location), which is the exact way of Carbon patch model. Can you please explain the patching process you are proposing? > > Thanks > > On Wed, Nov 11, 2015 at 6:07 PM, Sajith Kariyawasam <saj...@wso2.com> > wrote: > >> Hi Devs, >> >> At the moment Python Cartridge Agent (PCA) doesn't have a convenient way >> of applying patches. >> If there is an issue identified and fixed, in order to apply the fix to a >> running system that particular file(s) has to be replaced in the running >> system, >> and there is no easy way to revert the patch is there is any issue found >> later. >> Also, there is no way of tracking the list of patches applied. >> >> I would like to suggest to implement a patching model for PCA, similar to >> that we have in Stratos core, which is based on carbon [1] >> WDYT ? >> >> [1] >> https://docs.wso2.com/display/Carbon420/WSO2+Patch+Application+Process >> >> Thanks, >> Sajith >> >> -- >> Sajith Kariyawasam >> *Committer and PMC member, Apache Stratos, * >> *WSO2 Inc.; http://wso2.com <http://wso2.com>* >> *Mobile: 0772269575 <0772269575>* >> > > > > -- > Imesh Gunaratne > > Senior Technical Lead, WSO2 > Committer & PMC Member, Apache Stratos > -- Sajith Kariyawasam *Committer and PMC member, Apache Stratos, * *WSO2 Inc.; http://wso2.com <http://wso2.com>* *Mobile: 0772269575*
