Re: [WebDNA] RESTART WebDNA
This WebDNA talk-list message is from 2016
It keeps the original formatting.
numero = 113194
interpreted = N
texte = 782 I would suggest to create a new file called /etc/sudoers.d/webdna , and = put this inside: Defaults !authenticate %www-data ALL=3D/etc/init.d/WebCatalogCtl Then chmod 0440 /etc/sudoers.d/webdna . Use the follow WebDNA code with = it: [SHELL]sudo /etc/init.d/WebCatalogCtl restart &[/SHELL] > WebdnaMonitor utilizes a file that contains the process ID of the = running engine When WebCatalog is started with the -m argument, it does not create the = WebCatalog.pid file. Instead the WebDNAMonitor creates it, and puts its = own PID in it: # cat /usr/lib/cgi-bin/WebCatalogEngine/WebCatalog.pid 15568 # ps aux|grep 15568 root 15568 0.0 0.0 4288 608 pts/17 S 12:28 0:00 = /usr/lib/cgi-bin//WebCatalogEngine/WebDNAMonitor The bug is that the WebCatalog.pid file is deleted by WebCatalog on a = clean exit regardless of whether or not it created it. It should not do = this if -m was passed. > if the running engine is killed (i.e. Not usually the best way to stop = any application) This is how WebCatalogCtl and WebDNAMonitor stop WebCatalog. It sends it = a INT signal, which goes through the same handler as TERM so there is no = difference. What you want to avoid is sending SIGKILL (aka signal 9), that is = closest to force-quitting an application from the OSX GUI. The = application isn't able to run any signal handlers and do a graceful = shutdown, as signal 9 cannot be caught. "killall" will send a TERM signal by default, which WebCatalog will = catch and use to gracefully shutdown by running CleanExit(0). > there will likely end up being a mismatch between the monitor and the = engine. Then what will happen is rogue instances of the engine. Yeah you are right. Since WebCatalog deletes the WebCatalog.pid file = when it exits, the WebCatalogCtl script stops working. - chris > On Nov 18, 2016, at 21:03, Donovan Brooke
wrote: >=20 > WebdnaMonitor utilizes a file that contains the process ID of the = running engine.. if the running engine is killed (i.e. Not usually the = best way to stop any application), there will likely end up being a = mismatch between the monitor and the engine. Then what will happen is = rogue instances of the engine.=20 >=20 > A better idea to give people the power to control WebDNA and restarts = of the server would be to build a separate and optional WebDNA server = control app perhaps, that utilizes root capabilities... but there is = already an app for that... called shell, or terminal. >=20 > D. Brooke Mobile --------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: archives: http://mail.webdna.us/list/talk@webdna.us Bug Reporting: support@webdna.us .
Associated Messages, from the most recent to the oldest:
782 I would suggest to create a new file called /etc/sudoers.d/webdna , and = put this inside: Defaults !authenticate %www-data ALL=3D/etc/init.d/WebCatalogCtl Then chmod 0440 /etc/sudoers.d/webdna . Use the follow WebDNA code with = it: [shell]sudo /etc/init.d/WebCatalogCtl restart &[/SHELL] > WebdnaMonitor utilizes a file that contains the process ID of the = running engine When WebCatalog is started with the -m argument, it does not create the = WebCatalog.pid file. Instead the WebDNAMonitor creates it, and puts its = own PID in it: # cat /usr/lib/cgi-bin/WebCatalogEngine/WebCatalog.pid 15568 # ps aux|grep 15568 root 15568 0.0 0.0 4288 608 pts/17 S 12:28 0:00 = /usr/lib/cgi-bin//WebCatalogEngine/WebDNAMonitor The bug is that the WebCatalog.pid file is deleted by WebCatalog on a = clean exit regardless of whether or not it created it. It should not do = this if -m was passed. > if the running engine is killed (i.e. Not usually the best way to stop = any application) This is how WebCatalogCtl and WebDNAMonitor stop WebCatalog. It sends it = a INT signal, which goes through the same handler as TERM so there is no = difference. What you want to avoid is sending SIGKILL (aka signal 9), that is = closest to force-quitting an application from the OSX GUI. The = application isn't able to run any signal handlers and do a graceful = shutdown, as signal 9 cannot be caught. "killall" will send a TERM signal by default, which WebCatalog will = catch and use to gracefully shutdown by running CleanExit(0). > there will likely end up being a mismatch between the monitor and the = engine. Then what will happen is rogue instances of the engine. Yeah you are right. Since WebCatalog deletes the WebCatalog.pid file = when it exits, the WebCatalogCtl script stops working. - chris > On Nov 18, 2016, at 21:03, Donovan Brooke wrote: >=20 > WebdnaMonitor utilizes a file that contains the process ID of the = running engine.. if the running engine is killed (i.e. Not usually the = best way to stop any application), there will likely end up being a = mismatch between the monitor and the engine. Then what will happen is = rogue instances of the engine.=20 >=20 > A better idea to give people the power to control WebDNA and restarts = of the server would be to build a separate and optional WebDNA server = control app perhaps, that utilizes root capabilities... but there is = already an app for that... called shell, or terminal. >=20 > D. Brooke Mobile --------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: archives: http://mail.webdna.us/list/talk@webdna.us Bug Reporting: support@webdna.us .
christophe.billiottet@webdna.us
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