Why does my flex env google app engine instance have a minimum of 2 instances running, even when there is no traffic? - Stack Ov

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I'm running a flex environment google app engine service, and I can't understand why it always shows 2 instances running, even when there is no traffic. The flex environment I'm using is a distroless golang service.

I know with flex environments you can't set min instance properties. Now that I am getting traffic, I see the instance count is at 3, which makes me wonder, are two of these instances actually doing anything.

My CPU utilization runs at about 30%. Memory usage is 1.6 GB.

My yaml:

instance_class: F1

runtime: custom
env: flex

includes:
  - .env.yaml

I'm running a flex environment google app engine service, and I can't understand why it always shows 2 instances running, even when there is no traffic. The flex environment I'm using is a distroless golang service.

I know with flex environments you can't set min instance properties. Now that I am getting traffic, I see the instance count is at 3, which makes me wonder, are two of these instances actually doing anything.

My CPU utilization runs at about 30%. Memory usage is 1.6 GB.

My yaml:

instance_class: F1

runtime: custom
env: flex

includes:
  - .env.yaml

• google-cloud-platform
• google-app-engine
• google-app-engine-go

Share Improve this question Follow asked Nov 18, 2024 at 20:03 l2silverl2silver 3,43977 gold badges2626 silver badges2929 bronze badges 2

• Do you have 2 services deployed or only 1? Is your service run stuff in background? – guillaume blaquiere Commented Nov 18, 2024 at 20:18
• just the one default service – l2silver Commented Nov 18, 2024 at 23:43

Add a comment  | 

1 Answer 1

Sorted by: Reset to default 1

You must include a scaling description in your app.yaml file to control the min instance value.

By default, the min instance is set to 2. Set it to one in your scaling config override.

I'm running a flex environment google app engine service, and I can't understand why it always shows 2 instances running, even when there is no traffic. The flex environment I'm using is a distroless golang service.

I know with flex environments you can't set min instance properties. Now that I am getting traffic, I see the instance count is at 3, which makes me wonder, are two of these instances actually doing anything.

My CPU utilization runs at about 30%. Memory usage is 1.6 GB.

My yaml:

instance_class: F1

runtime: custom
env: flex

includes:
  - .env.yaml

I'm running a flex environment google app engine service, and I can't understand why it always shows 2 instances running, even when there is no traffic. The flex environment I'm using is a distroless golang service.

I know with flex environments you can't set min instance properties. Now that I am getting traffic, I see the instance count is at 3, which makes me wonder, are two of these instances actually doing anything.

My CPU utilization runs at about 30%. Memory usage is 1.6 GB.

My yaml:

instance_class: F1

runtime: custom
env: flex

includes:
  - .env.yaml

• google-cloud-platform
• google-app-engine
• google-app-engine-go

Share Improve this question Follow asked Nov 18, 2024 at 20:03 l2silverl2silver 3,43977 gold badges2626 silver badges2929 bronze badges 2

• Do you have 2 services deployed or only 1? Is your service run stuff in background? – guillaume blaquiere Commented Nov 18, 2024 at 20:18
• just the one default service – l2silver Commented Nov 18, 2024 at 23:43

Add a comment  | 

1 Answer 1

Sorted by: Reset to default 1

You must include a scaling description in your app.yaml file to control the min instance value.

By default, the min instance is set to 2. Set it to one in your scaling config override.

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