application logging when using 'gcloud preview app run' in Java
Matt Self
Ok, based on this thread (https://code.google.com/p/google-cloud-sdk/issues/detail?id=163) it seems that gcloud defaults to "docker-less" local development. Unfortunately, when this is the case I can't seem to get application logs to appear in the console (or anywhere else for that matter). I see that it falls back on using devappserver2.py / jetty, but I'm not sure where stdout is getting redirected. I do see general request handling logging in the main console window, but no application logging gets out. This is not the case if I use mvn gcloud:run which logs just fine (to docker).
Again, if I use mvn gcloud:run, it defaults to using docker, and I am able to find my logs by ssh-ing into the running container (in /var/logs/appengine). But when running via 'gcloud preview app run' I get no app logs.
So, two questions:
First, where are the logs when running (dockerless) 'gcloud preview app run'? I have everything set up correctly (and can confirm that app log messages are redirected from stdout to file when running within docker container via mvn gcloud:run).
Second, is it possible to use the 'gcloud preview app run' with a flag to indicate that it should run in docker "mode"? A flag could be a work around for me and would be handy in any case (as I typically launch from the gcloud toolset so i can use a dispatcher.yaml and other app.yaml modules).
Any insight into this is appreciated. Thanks for the help.
Matt Self
e.g.
DEBUG 2015-08-20 03:39:22,137 safe_subprocess.py:60] Starting process ['/usr/lib/jvm/java-7-oracle/bin/java', '-Dgcloud.java.application=/home/matt/src/java/blah/build', '-Djetty.home=/home/matt/google-cloud-sdk/platform/google_appengine/google/appengine/javamanagedvm/appengine-java-vmruntime', '-Djetty.base=/home/matt/google-cloud-sdk/platform/google_appengine/google/appengine/jettybasesdk', '-jar', ... 'APP_ENGINE_LOG_CONFIG_PATTERN': '/tmp/tmpMupjUTgae/log.%g', 'TZ': 'UTC', 'SDKROOT': '/home/google-cloud-sdk/platform/google_appengine', 'GAE_LONG_APP_ID': 'asd-87623', 'GAE_MODULE_INSTANCE': '0'}, cwd='/home/' ...
Inconvenient, as it changes every time, but it'll work for now. I'd love to hear of a way to override this or better yet get it into the main terminal window.
Ludovic Champenois
Hooray, I found a log location. Tucked away in the safe_process.py debug output. By starting the with gcloud with a verbosity of debug (i.e. gcloud preview app run ./app.yaml --verbosity debug) it shows a setting of APP_ENGINE_LOG_CONFIG_PATTERN which indicated (for me) where logs were going.
e.g.
DEBUG 2015-08-20 03:39:22,137 safe_subprocess.py:60] Starting process ['/usr/lib/jvm/java-7-oracle/bin/java', '-Dgcloud.java.application=/home/matt/src/java/blah/build', '-Djetty.home=/home/matt/google-cloud-sdk/platform/google_appengine/google/appengine/javamanagedvm/appengine-java-vmruntime', '-Djetty.base=/home/matt/google-cloud-sdk/platform/google_appengine/google/appengine/jettybasesdk', '-jar', ... 'APP_ENGINE_LOG_CONFIG_PATTERN': '/tmp/tmpMupjUTgae/log.%g', 'TZ': 'UTC', 'SDKROOT': '/home/google-cloud-sdk/platform/google_appengine', 'GAE_LONG_APP_ID': 'asd-87623', 'GAE_MODULE_INSTANCE': '0'}, cwd='/home/' ...
Inconvenient, as it changes every time, but it'll work for now. I'd love to hear of a way to override this or better yet get it into the main terminal window.
Ludo
On Wednesday, August 19, 2015 at 3:17:41 PM UTC-6, Matt Self wrote:Ok, based on this thread (https://code.google.com/p/google-cloud-sdk/issues/detail?id=163) it seems that gcloud defaults to "docker-less" local development. Unfortunately, when this is the case I can't seem to get application logs to appear in the console (or anywhere else for that matter). I see that it falls back on using devappserver2.py / jetty, but I'm not sure where stdout is getting redirected. I do see general request handling logging in the main console window, but no application logging gets out. This is not the case if I use mvn gcloud:run which logs just fine (to docker).
Again, if I use mvn gcloud:run, it defaults to using docker, and I am able to find my logs by ssh-ing into the running container (in /var/logs/appengine). But when running via 'gcloud preview app run' I get no app logs.
So, two questions:
First, where are the logs when running (dockerless) 'gcloud preview app run'? I have everything set up correctly (and can confirm that app log messages are redirected from stdout to file when running within docker container via mvn gcloud:run).
Second, is it possible to use the 'gcloud preview app run' with a flag to indicate that it should run in docker "mode"? A flag could be a work around for me and would be handy in any case (as I typically launch from the gcloud toolset so i can use a dispatcher.yaml and other app.yaml modules).
Any insight into this is appreciated. Thanks for the help.
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