App Engine Flexible
Deploy Hello World app
For setup, follow this guidance here: https://cloud.google.com/appengine/docs/flexible/go/quickstart
- If we don’t do these setup steps, an error exec: “gcc”: executable file not found in $PATH may occur when running gcloud app deploy
My environment:
$ cat /etc/system-release
CentOS Linux release 7.9.2009 (Core)
$ git version
git version 1.8.3.1
$ go version
go version go1.15.14 linux/amd64
Download go sample Hello World app and try running it locally.
$ git clone github.com/GoogleCloudPlatform/golang-samples
$ cd golang-samples/appengine_flexible/helloworld
# Run it locally
$ go run *.go
There was an error: fatal: git fetch-pack: expected shallow list
go: cloud.google.com/go/bigtable@v1.4.0 requires
google.golang.org/api@v0.28.0 requires
honnef.co/go/tools@v0.0.1-2020.1.3 requires
golang.org/x/mod@v0.0.0-20190513183733-4bf6d317e70e: invalid version: git fetch --unshallow -f origin in /xxx/go/pkg/mod/cache/vcs/13df7481b5cc3358460b717a6142fe8dbaae7652e5d05689849f419ffd40ac12: exit status 128:
fatal: git fetch-pack: expected shallow list
How to solve fatal: git fetch-pack: expected shallow list ?
The causes seems to be that git and go versions are too old. So I upgrade them to newer versions.
Upgrade git to 2.22
$ sudo yum erase git
$ sudo yum install https://repo.ius.io/ius-release-el7.rpm
$ sudo yum install git222
$ git version
git version 2.22.5
Upgrade go to 1.17
$ curl -O -L https://golang.org/dl/go1.17.1.linux-amd64.tar.gz
$ sudo rm -rf /usr/local/go && sudo tar -C /usr/local -xzf go1.17.1.linux-amd64.tar.gz
$ export PATH=$PATH:/usr/local/go/bin # or add it into .bash_profile
$ go version
go version go1.17.1 linux/amd64
Deploy Hello World app (cnt)
Deploy Hello World app (cnt)
$ go run *.go
2021/10/06 21:25:23 Listening on port 8080
This time it was successful.
Now deploy it to App Engine.
$ gcloud app deploy
Services to deploy:
descriptor: [/xxx//golang-samples/appengine_flexible/helloworld/app.yaml]
source: [/xxx//golang-samples/appengine_flexible/helloworld]
target project: [xxx]
target service: [default]
target version: [20211006t212756]
target url: [https://xxx.et.r.appspot.com]
target service account: [App Engine default service account]
Do you want to continue (Y/n)? Y
Beginning deployment of service [default]...
Building and pushing image for service [default]
Started cloud build [e9dcb100-372e-4986-be99-e1440bdf97b6].
To see logs in the Cloud Console: https://console.cloud.google.com/cloud-build/builds/e9dcb100-372e-4986-be99-e1440bdf97b6?project=xxx
----------------------------------------------------------------------- REMOTE BUILD OUTPUT ------------------------------------------------------------------------
starting build "e9dcb100-372e-4986-be99-e1440bdf97b6"
FETCHSOURCE
Fetching storage object: gs://staging.xxx.appspot.com/asia.gcr.io/xxx/appengine/default.20211006t212756:latest#1633555680352376
Copying gs://staging.xxx.appspot.com/asia.gcr.io/xxx/appengine/default.20211006t212756:latest#1633555680352376...
- [1 files][ 1.2 KiB/ 1.2 KiB]
Operation completed over 1 objects/1.2 KiB.
BUILD
Starting Step #0
Step #0: Pulling image: gcr.io/gcp-runtimes/go1-builder@sha256:408a098788ef4cdeec452821946b986ef82ce5ebceecbdf748ffecf329765bce
Step #0: gcr.io/gcp-runtimes/go1-builder@sha256:408a098788ef4cdeec452821946b986ef82ce5ebceecbdf748ffecf329765bce: Pulling from gcp-runtimes/go1-builder
Step #0: 6c5b97b864a6: Already exists
...
Step #0: Digest: sha256:408a098788ef4cdeec452821946b986ef82ce5ebceecbdf748ffecf329765bce
Step #0: Status: Downloaded newer image for gcr.io/gcp-runtimes/go1-builder@sha256:408a098788ef4cdeec452821946b986ef82ce5ebceecbdf748ffecf329765bce
Step #0: gcr.io/gcp-runtimes/go1-builder@sha256:408a098788ef4cdeec452821946b986ef82ce5ebceecbdf748ffecf329765bce
Finished Step #0
Starting Step #1
Step #1: Already have image (with digest): gcr.io/kaniko-project/executor@sha256:b9eec410fa32cd77cdb7685c70f86a96debb8b087e77e63d7fe37eaadb178709
Step #1: INFO[0000] Retrieving image manifest gcr.io/distroless/
...
Step #1: INFO[0001] Executing 0 build triggers
Step #1: INFO[0001] Unpacking rootfs as cmd COPY bin/ /usr/local/bin/ requires it.
Step #1: INFO[0002] LABEL build_tag="1.11.13-20211004_2020"
Step #1: INFO[0002] Applying label build_tag=1.11.13-20211004_2020
Step #1: INFO[0002] LABEL go_version="1.11.13"
Step #1: INFO[0002] Applying label go_version=1.11.13
Step #1: INFO[0002] COPY bin/ /usr/local/bin/
Step #1: INFO[0002] Taking snapshot of files...
Step #1: INFO[0002] COPY app/ /app/
Step #1: INFO[0002] Taking snapshot of files...
Step #1: INFO[0002] WORKDIR /app
Step #1: INFO[0002] cmd: workdir
Step #1: INFO[0002] Changed working directory to /app
Step #1: INFO[0002] No files changed in this command, skipping snapshotting.
Step #1: INFO[0002] ENTRYPOINT ["/usr/local/bin/app"]
Finished Step #1
PUSH
DONE
--------------------------------------------------------------------------------------------------------------------------------------------------------------------
Updating service [default] (this may take several minutes)...done.
Setting traffic split for service [default]...done.
Deployed service [default] to [https://xxx.et.r.appspot.com]
You can stream logs from the command line by running:
$ gcloud app logs tail -s default
To view your application in the web browser run:
$ gcloud app browse
The deployment was successful. Go to Google Cloud Console and we can see the new version of the app.
References
https://github.com/golang/go/issues/38373