1. Output of caddy version
:
v2.6.2 h1:wKoFIxpmOJLGl3QXoo6PNbYvGW4xLEgo32GPBEjWL8o=
2. How I run Caddy:
I wanted to use Caddy as a reverse proxy as proposed here: Deploying a reverse proxy to PostHog Cloud - Docs - PostHog
I want to host Caddy in Google Cloud run, I had to create a Dockerfile and Caddyfile
The Google Cloud Run service I use has enabled domain mapping to https://analytics.openfort.xyz
a. System environment:
Docker and Google Cloud Run
b. Command:
Using Docker
c. Service/unit/compose file:
FROM caddy:alpine
COPY ./Caddyfile /etc/caddy/Caddyfile
d. My complete Caddy config:
{
email my@email.com
}
:{$PORT} {
reverse_proxy eu.posthog.com:443
}
3. The problem I’m having:
I want to use Caddy as a reverse proxy as suggested here: Deploying a reverse proxy to PostHog Cloud - Docs - PostHog
I want to host it in Cloud run
4. Error messages and/or full log output:
{
"insertId": "63c13a7400062548eff5ba43",
"jsonPayload": {
"config_file": "/etc/caddy/Caddyfile",
"msg": "using provided configuration",
"config_adapter": "caddyfile",
"level": "info",
"ts": 1673607796.4025066
},
"resource": {
"type": "cloud_run_revision",
"labels": {
"configuration_name": "reverse-proxy",
"revision_name": "reverse-proxy-00018-mox",
"project_id": "openfort",
"service_name": "reverse-proxy",
"location": "europe-west1"
}
},
"timestamp": "2023-01-13T11:03:16.402760Z",
"labels": {
"instanceId": "0071bb481510cd7b427188423e59274e3534b509a36a0826e4038c80264bbae6957a27e1479e233c5703ee03fd77173ebfe2d6548112b09c2d8dcf46ead43e3a39",
"gcb-trigger-id": "6c5dfb5c-b7d3-427d-9371-cb61bdc1fcd6",
"managed-by": "gcp-cloud-build-deploy-cloud-run",
"gcb-build-id": "402c7566-69af-423b-80ff-7a1439f3d35b",
"commit-sha": "17c2a96d653aead529683a8e8f0222b6adf75627"
},
"logName": "projects/openfort/logs/run.googleapis.com%2Fstderr",
"receiveTimestamp": "2023-01-13T11:03:16.408647863Z"
},
{
"insertId": "63c13a74000633dd3488a5d4",
"jsonPayload": {
"file": "/etc/caddy/Caddyfile",
"level": "warn",
"msg": "Caddyfile input is not formatted; run the 'caddy fmt' command to fix inconsistencies",
"adapter": "caddyfile",
"line": 2,
"ts": 1673607796.4063733
},
"resource": {
"type": "cloud_run_revision",
"labels": {
"configuration_name": "reverse-proxy",
"project_id": "openfort",
"service_name": "reverse-proxy",
"location": "europe-west1",
"revision_name": "reverse-proxy-00018-mox"
}
},
"timestamp": "2023-01-13T11:03:16.406493Z",
"labels": {
"gcb-trigger-id": "6c5dfb5c-b7d3-427d-9371-cb61bdc1fcd6",
"commit-sha": "17c2a96d653aead529683a8e8f0222b6adf75627",
"instanceId": "0071bb481510cd7b427188423e59274e3534b509a36a0826e4038c80264bbae6957a27e1479e233c5703ee03fd77173ebfe2d6548112b09c2d8dcf46ead43e3a39",
"managed-by": "gcp-cloud-build-deploy-cloud-run",
"gcb-build-id": "402c7566-69af-423b-80ff-7a1439f3d35b"
},
"logName": "projects/openfort/logs/run.googleapis.com%2Fstderr",
"receiveTimestamp": "2023-01-13T11:03:16.742761064Z"
},
{
"insertId": "63c13a74000649c4f1a778f9",
"jsonPayload": {
"logger": "admin",
"ts": 1673607796.4119742,
"level": "info",
"enforce_origin": false,
"origins": [
"//localhost:2019",
"//[::1]:2019",
"//127.0.0.1:2019"
],
"msg": "admin endpoint started",
"address": "localhost:2019"
},
"resource": {
"type": "cloud_run_revision",
"labels": {
"location": "europe-west1",
"project_id": "openfort",
"revision_name": "reverse-proxy-00018-mox",
"configuration_name": "reverse-proxy",
"service_name": "reverse-proxy"
}
},
"timestamp": "2023-01-13T11:03:16.412100Z",
"labels": {
"commit-sha": "17c2a96d653aead529683a8e8f0222b6adf75627",
"instanceId": "0071bb481510cd7b427188423e59274e3534b509a36a0826e4038c80264bbae6957a27e1479e233c5703ee03fd77173ebfe2d6548112b09c2d8dcf46ead43e3a39",
"managed-by": "gcp-cloud-build-deploy-cloud-run",
"gcb-trigger-id": "6c5dfb5c-b7d3-427d-9371-cb61bdc1fcd6",
"gcb-build-id": "402c7566-69af-423b-80ff-7a1439f3d35b"
},
"logName": "projects/openfort/logs/run.googleapis.com%2Fstderr",
"receiveTimestamp": "2023-01-13T11:03:16.742761064Z"
},
{
"insertId": "63c13a7400064d9256b7d815",
"jsonPayload": {
"level": "info",
"logger": "http",
"ts": 1673607796.4129958,
"msg": "server is listening only on the HTTPS port but has no TLS connection policies; adding one to enable TLS",
"server_name": "srv0",
"https_port": 443
},
"resource": {
"type": "cloud_run_revision",
"labels": {
"project_id": "openfort",
"location": "europe-west1",
"configuration_name": "reverse-proxy",
"service_name": "reverse-proxy",
"revision_name": "reverse-proxy-00018-mox"
}
},
"timestamp": "2023-01-13T11:03:16.413074Z",
"labels": {
"commit-sha": "17c2a96d653aead529683a8e8f0222b6adf75627",
"managed-by": "gcp-cloud-build-deploy-cloud-run",
"instanceId": "0071bb481510cd7b427188423e59274e3534b509a36a0826e4038c80264bbae6957a27e1479e233c5703ee03fd77173ebfe2d6548112b09c2d8dcf46ead43e3a39",
"gcb-trigger-id": "6c5dfb5c-b7d3-427d-9371-cb61bdc1fcd6",
"gcb-build-id": "402c7566-69af-423b-80ff-7a1439f3d35b"
},
"logName": "projects/openfort/logs/run.googleapis.com%2Fstderr",
"receiveTimestamp": "2023-01-13T11:03:16.742761064Z"
},
{
"insertId": "63c13a7400064da365deb28d",
"jsonPayload": {
"level": "info",
"msg": "enabling automatic HTTP->HTTPS redirects",
"ts": 1673607796.4130394,
"server_name": "srv0",
"logger": "http"
},
"resource": {
"type": "cloud_run_revision",
"labels": {
"configuration_name": "reverse-proxy",
"revision_name": "reverse-proxy-00018-mox",
"location": "europe-west1",
"service_name": "reverse-proxy",
"project_id": "openfort"
}
},
"timestamp": "2023-01-13T11:03:16.413091Z",
"labels": {
"gcb-trigger-id": "6c5dfb5c-b7d3-427d-9371-cb61bdc1fcd6",
"instanceId": "0071bb481510cd7b427188423e59274e3534b509a36a0826e4038c80264bbae6957a27e1479e233c5703ee03fd77173ebfe2d6548112b09c2d8dcf46ead43e3a39",
"gcb-build-id": "402c7566-69af-423b-80ff-7a1439f3d35b",
"commit-sha": "17c2a96d653aead529683a8e8f0222b6adf75627",
"managed-by": "gcp-cloud-build-deploy-cloud-run"
},
"logName": "projects/openfort/logs/run.googleapis.com%2Fstderr",
"receiveTimestamp": "2023-01-13T11:03:16.742761064Z"
},
{
"insertId": "63c13a74000652a09c7b5e89",
"jsonPayload": {
"cache": "0xc000237f10",
"msg": "started background certificate maintenance",
"level": "info",
"ts": 1673607796.4142904,
"logger": "tls.cache.maintenance"
},
"resource": {
"type": "cloud_run_revision",
"labels": {
"configuration_name": "reverse-proxy",
"project_id": "openfort",
"revision_name": "reverse-proxy-00018-mox",
"service_name": "reverse-proxy",
"location": "europe-west1"
}
},
"timestamp": "2023-01-13T11:03:16.414368Z",
"labels": {
"instanceId": "0071bb481510cd7b427188423e59274e3534b509a36a0826e4038c80264bbae6957a27e1479e233c5703ee03fd77173ebfe2d6548112b09c2d8dcf46ead43e3a39",
"commit-sha": "17c2a96d653aead529683a8e8f0222b6adf75627",
"managed-by": "gcp-cloud-build-deploy-cloud-run",
"gcb-build-id": "402c7566-69af-423b-80ff-7a1439f3d35b",
"gcb-trigger-id": "6c5dfb5c-b7d3-427d-9371-cb61bdc1fcd6"
},
"logName": "projects/openfort/logs/run.googleapis.com%2Fstderr",
"receiveTimestamp": "2023-01-13T11:03:16.742761064Z"
},
{
"insertId": "63c13a74000656fa0877f8ce",
"jsonPayload": {
"logger": "http",
"ts": 1673607796.4154103,
"addr": ":443",
"msg": "enabling HTTP/3 listener",
"level": "info"
},
"resource": {
"type": "cloud_run_revision",
"labels": {
"configuration_name": "reverse-proxy",
"revision_name": "reverse-proxy-00018-mox",
"service_name": "reverse-proxy",
"location": "europe-west1",
"project_id": "openfort"
}
},
"timestamp": "2023-01-13T11:03:16.415482Z",
"labels": {
"managed-by": "gcp-cloud-build-deploy-cloud-run",
"gcb-trigger-id": "6c5dfb5c-b7d3-427d-9371-cb61bdc1fcd6",
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"commit-sha": "17c2a96d653aead529683a8e8f0222b6adf75627"
},
"logName": "projects/openfort/logs/run.googleapis.com%2Fstderr",
"receiveTimestamp": "2023-01-13T11:03:16.742761064Z"
},
{
"insertId": "63c13a7400065c9cfa698330",
"jsonPayload": {
"protocols": [
"h1",
"h2",
"h3"
],
"level": "info",
"logger": "http.log",
"ts": 1673607796.4168425,
"name": "srv0",
"msg": "server running"
},
"resource": {
"type": "cloud_run_revision",
"labels": {
"configuration_name": "reverse-proxy",
"revision_name": "reverse-proxy-00018-mox",
"project_id": "openfort",
"location": "europe-west1",
"service_name": "reverse-proxy"
}
},
"timestamp": "2023-01-13T11:03:16.416924Z",
"labels": {
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"commit-sha": "17c2a96d653aead529683a8e8f0222b6adf75627"
},
"logName": "projects/openfort/logs/run.googleapis.com%2Fstderr",
"receiveTimestamp": "2023-01-13T11:03:16.742761064Z"
},
{
"insertId": "63c13a7400065d46b560f751",
"jsonPayload": {
"msg": "server running",
"protocols": [
"h1",
"h2",
"h3"
],
"ts": 1673607796.4170384,
"level": "info",
"name": "srv1",
"logger": "http.log"
},
"resource": {
"type": "cloud_run_revision",
"labels": {
"revision_name": "reverse-proxy-00018-mox",
"location": "europe-west1",
"configuration_name": "reverse-proxy",
"project_id": "openfort",
"service_name": "reverse-proxy"
}
},
"timestamp": "2023-01-13T11:03:16.417094Z",
"labels": {
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},
"logName": "projects/openfort/logs/run.googleapis.com%2Fstderr",
"receiveTimestamp": "2023-01-13T11:03:16.742761064Z"
},
{
"insertId": "63c13a7400065d88d3538f2e",
"jsonPayload": {
"level": "info",
"name": "remaining_auto_https_redirects",
"protocols": [
"h1",
"h2",
"h3"
],
"msg": "server running",
"ts": 1673607796.4171174,
"logger": "http.log"
},
"resource": {
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"location": "europe-west1"
}
},
"timestamp": "2023-01-13T11:03:16.417160Z",
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"receiveTimestamp": "2023-01-13T11:03:16.742761064Z"
},
{
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"jsonPayload": {
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"level": "info",
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"domains": [
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},
"resource": {
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}
},
"timestamp": "2023-01-13T11:03:16.417173Z",
"labels": {
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},
"logName": "projects/openfort/logs/run.googleapis.com%2Fstderr",
"receiveTimestamp": "2023-01-13T11:03:16.742761064Z"
},
{
"insertId": "63c13a74000660218ada1573",
"jsonPayload": {
"level": "info",
"ts": 1673607796.4177763,
"msg": "autosaved config (load with --resume flag)",
"file": "/config/caddy/autosave.json"
},
"resource": {
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"labels": {
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"configuration_name": "reverse-proxy"
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},
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},
{
"insertId": "63c13a740006602e5fcdf51f",
"jsonPayload": {
"msg": "serving initial configuration",
"level": "info",
"ts": 1673607796.4177935
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}
},
"timestamp": "2023-01-13T11:03:16.417838Z",
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{
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"identifier": "debug",
"level": "info",
"msg": "acquiring lock",
"ts": 1673607796.4184139
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{
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"ts": 1673607796.4187589
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}
},
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"receiveTimestamp": "2023-01-13T11:03:16.742761064Z"
},
{
"insertId": "63c13a740006650d621950ab",
"jsonPayload": {
"logger": "tls.obtain",
"level": "info",
"msg": "obtaining certificate",
"identifier": "debug",
"ts": 1673607796.418989
},
"resource": {
"type": "cloud_run_revision",
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"configuration_name": "reverse-proxy",
"location": "europe-west1",
"revision_name": "reverse-proxy-00018-mox",
"project_id": "openfort",
"service_name": "reverse-proxy"
}
},
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"receiveTimestamp": "2023-01-13T11:03:16.742761064Z"
},
{
"insertId": "63c13a74000675146ba4c780",
"jsonPayload": {
"level": "info",
"ts": 1673607796.4230888,
"msg": "cleaning storage unit",
"logger": "tls",
"description": "FileStorage:/data/caddy"
},
"resource": {
"type": "cloud_run_revision",
"labels": {
"revision_name": "reverse-proxy-00018-mox",
"location": "europe-west1",
"project_id": "openfort",
"service_name": "reverse-proxy",
"configuration_name": "reverse-proxy"
}
},
"timestamp": "2023-01-13T11:03:16.423188Z",
"labels": {
"instanceId": "0071bb481510cd7b427188423e59274e3534b509a36a0826e4038c80264bbae6957a27e1479e233c5703ee03fd77173ebfe2d6548112b09c2d8dcf46ead43e3a39",
"managed-by": "gcp-cloud-build-deploy-cloud-run",
"gcb-trigger-id": "6c5dfb5c-b7d3-427d-9371-cb61bdc1fcd6",
"commit-sha": "17c2a96d653aead529683a8e8f0222b6adf75627",
"gcb-build-id": "402c7566-69af-423b-80ff-7a1439f3d35b"
},
"logName": "projects/openfort/logs/run.googleapis.com%2Fstderr",
"receiveTimestamp": "2023-01-13T11:03:16.742761064Z"
},
{
"insertId": "63c13a740006756ccaef2f4e",
"jsonPayload": {
"level": "info",
"msg": "finished cleaning storage units",
"logger": "tls",
"ts": 1673607796.4232364
},
"resource": {
"type": "cloud_run_revision",
"labels": {
"project_id": "openfort",
"location": "europe-west1",
"revision_name": "reverse-proxy-00018-mox",
"configuration_name": "reverse-proxy",
"service_name": "reverse-proxy"
}
},
"timestamp": "2023-01-13T11:03:16.423276Z",
"labels": {
"gcb-build-id": "402c7566-69af-423b-80ff-7a1439f3d35b",
"commit-sha": "17c2a96d653aead529683a8e8f0222b6adf75627",
"managed-by": "gcp-cloud-build-deploy-cloud-run",
"gcb-trigger-id": "6c5dfb5c-b7d3-427d-9371-cb61bdc1fcd6",
"instanceId": "0071bb481510cd7b427188423e59274e3534b509a36a0826e4038c80264bbae6957a27e1479e233c5703ee03fd77173ebfe2d6548112b09c2d8dcf46ead43e3a39"
},
"logName": "projects/openfort/logs/run.googleapis.com%2Fstderr",
"receiveTimestamp": "2023-01-13T11:03:16.742761064Z"
},
]
5. What I already tried:
{
email my@email.com
}
:{$PORT} {
reverse_proxy eu.posthog.com:443
}
with curl -v https://analytics.openfort.xyz output:
* Trying 142.250.201.83:443...
* Connected to analytics.openfort.xyz (142.250.201.83) port 443 (#0)
* ALPN: offers h2
* ALPN: offers http/1.1
* CAfile: /etc/ssl/cert.pem
* CApath: none
* (304) (OUT), TLS handshake, Client hello (1):
* (304) (IN), TLS handshake, Server hello (2):
* (304) (IN), TLS handshake, Unknown (8):
* (304) (IN), TLS handshake, Certificate (11):
* (304) (IN), TLS handshake, CERT verify (15):
* (304) (IN), TLS handshake, Finished (20):
* (304) (OUT), TLS handshake, Finished (20):
* SSL connection using TLSv1.3 / AEAD-CHACHA20-POLY1305-SHA256
* ALPN: server accepted h2
* Server certificate:
* subject: CN=analytics.openfort.xyz
* start date: Jan 11 18:28:50 2023 GMT
* expire date: Apr 11 19:12:16 2023 GMT
* subjectAltName: host "analytics.openfort.xyz" matched cert's "analytics.openfort.xyz"
* issuer: C=US; O=Google Trust Services LLC; CN=GTS CA 1D4
* SSL certificate verify ok.
* Using HTTP2, server supports multiplexing
* Copying HTTP/2 data in stream buffer to connection buffer after upgrade: len=0
* h2h3 [:method: GET]
* h2h3 [:path: /]
* h2h3 [:scheme: https]
* h2h3 [:authority: analytics.openfort.xyz]
* h2h3 [user-agent: curl/7.85.0]
* h2h3 [accept: */*]
* Using Stream ID: 1 (easy handle 0x12a00c600)
> GET / HTTP/2
> Host: analytics.openfort.xyz
> user-agent: curl/7.85.0
> accept: */*
>
< HTTP/2 400
< content-type: text/html
< via: 1.1 9f63706579db7391acaa39a0dddcff5e.cloudfront.net (CloudFront)
< x-amz-cf-id: 3qmnVVKynAUNMMw4Vs6SZtslKIcd_O64pH6Si-HvxUbWPUq_5O77Lg==
< x-amz-cf-pop: CDG3-C2
< x-cache: Error from cloudfront
< x-cloud-trace-context: ec4faf911b39f5d7bbe568d574488467
< date: Fri, 13 Jan 2023 11:03:44 GMT
< server: Google Frontend
< content-length: 915
<
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML><HEAD><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<TITLE>ERROR: The request could not be satisfied</TITLE>
</HEAD><BODY>
<H1>400 ERROR</H1>
<H2>The request could not be satisfied.</H2>
<HR noshade size="1px">
Bad request.
We can't connect to the server for this app or website at this time. There might be too much traffic or a configuration error. Try again later, or contact the app or website owner.
<BR clear="all">
If you provide content to customers through CloudFront, you can find steps to troubleshoot and help prevent this error by reviewing the CloudFront documentation.
<BR clear="all">
<HR noshade size="1px">
<PRE>
Generated by cloudfront (CloudFront)
Request ID: 3qmnVVKynAUNMMw4Vs6SZtslKIcd_O64pH6Si-HvxUbWPUq_5O77Lg==
</PRE>
<ADDRESS>
</ADDRESS>
* Connection #0 to host analytics.openfort.xyz left intact
</BODY></HTML>
If I then change the reverse_proxy url to https://eu.posthog.com:
{
email my@email.com
}
:{$PORT} {
reverse_proxy https://eu.posthog.com
}
I get the following error:
When I change the --from url to analytics.openfort.xyz,
{
email my@email.com
}
analytics.openfort.xyz {
reverse_proxy eu.posthog.com:443
}
the service fails to build with error:
ERROR: (gcloud.run.services.update) The user-provided container failed to start and listen on the port defined provided by the PORT=8080 environment variable. Logs for this revision might contain more information.
I’ve also tried adding auto_https off, but I still get the 400 Error.
6. Links to relevant resources:
I’ve read the following forum post on using caddy with Cloud run https://caddy.community/t/caddy-works-with-google-cloud-run/6898
and it worked fine with the example that is provided, but I just can’t manage to get it to work with the reverse proxy.