Log all services to memory (blakeblackshear#4587)

* Log all services to RAM

* Fix tests workdir

* Rotate logs when they reach 10MB and keep only 1 archive

* Gracefully handle shutdown

* Add note about gracetime not working

* Fix logs permission, create fake logs for devcontainer

* Remove empty line

* Update docker/rootfs/etc/services.d/frigate/run

* Fix fake Frigate shebang

Dockerfile

@@ -155,10 +155,6 @@ ENV NVIDIA_DRIVER_CAPABILITIES="compute,video,utility"
 
 ENV PATH="/usr/lib/btbn-ffmpeg/bin:/usr/local/go2rtc/bin:/usr/local/nginx/sbin:${PATH}"
 
-# TODO: remove after a new verion of s6-overlay is released. See:
-# https://github.com/just-containers/s6-overlay/issues/460#issuecomment-1327127006
-ENV S6_SERVICES_READYTIME=50
-
 # Install dependencies
 RUN --mount=type=bind,source=docker/install_deps.sh,target=/deps/install_deps.sh \
  /deps/install_deps.sh
@@ -175,11 +171,31 @@ EXPOSE 1935
 EXPOSE 8554
 EXPOSE 8555
 
+# Fails if cont-init.d fails
+ENV S6_BEHAVIOUR_IF_STAGE2_FAILS=2
+# Wait indefinitely for cont-init.d to finish before starting services
+ENV S6_CMD_WAIT_FOR_SERVICES=1
+ENV S6_CMD_WAIT_FOR_SERVICES_MAXTIME=0
+# Give services (including Frigate) 30 seconds to stop before killing them
+# But this is not working currently because of:
+# https://github.com/just-containers/s6-overlay/issues/503
+ENV S6_SERVICES_GRACETIME=30000
+# Configure logging to prepend timestamps, log to stdout, keep 1 archive and rotate on 10MB
+ENV S6_LOGGING_SCRIPT="T 1 n1 s10000000 T"
+# TODO: remove after a new version of s6-overlay is released. See:
+# https://github.com/just-containers/s6-overlay/issues/460#issuecomment-1327127006
+ENV S6_SERVICES_READYTIME=50
+
 ENTRYPOINT ["/init"]
+CMD []
 
 # Frigate deps with Node.js and NPM for devcontainer
 FROM deps AS devcontainer
 
+# Do not start the actual Frigate service on devcontainer as it will be started by VSCode
+# But start a fake service for simulating the logs
+COPY docker/fake_frigate_run /etc/services.d/frigate/run
+
 # Install Node 16
 RUN apt-get update \
  && apt-get install wget -y \
@@ -224,5 +240,3 @@ FROM deps
 
 WORKDIR /opt/frigate/
 COPY --from=rootfs / /
-
-CMD ["with-contenv", "python3", "-u", "-m", "frigate"]

Makefile

@@ -30,8 +30,11 @@ build: version amd64 arm64 armv7
 push: build
  docker buildx build --push --platform linux/arm/v7,linux/arm64/v8,linux/amd64 --tag $(IMAGE_REPO):${GITHUB_REF_NAME}-$(COMMIT_HASH) .
 
+run: local
+ docker run --rm --publish=5000:5000 --volume=${PWD}/config/config.yml:/config/config.yml frigate:latest
+
 run_tests: local
- docker run --rm --entrypoint=python3 frigate:latest -u -m unittest
- docker run --rm --entrypoint=python3 frigate:latest -u -m mypy --config-file frigate/mypy.ini frigate
+ docker run --rm --workdir=/opt/frigate --entrypoint= frigate:latest python3 -u -m unittest
+ docker run --rm --workdir=/opt/frigate --entrypoint= frigate:latest python3 -u -m mypy --config-file frigate/mypy.ini frigate
 
 .PHONY: run_tests

docker/fake_frigate_run

@@ -0,0 +1,8 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+# Start the fake Frigate service
+
+while true; do
+ echo "The fake Frigate service is running..."
+ sleep 5s
+done

docker/rootfs/etc/cont-init.d/prepare-logs.sh

@@ -0,0 +1,11 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+# Prepare the logs folder for s6-log
+
+set -o errexit -o nounset -o pipefail
+
+dirs=(/dev/shm/logs/frigate /dev/shm/logs/go2rtc /dev/shm/logs/nginx)
+
+mkdir -p "${dirs[@]}"
+chown nobody:nogroup "${dirs[@]}"
+chmod 02755 "${dirs[@]}"

docker/rootfs/etc/services.d/frigate/finish

@@ -0,0 +1,16 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+# Take down the S6 supervision tree when the service exits
+
+set -o errexit -o nounset -o pipefail
+
+# Prepare exit code
+if [[ "${1}" -eq 256 ]]; then
+ exit_code="$((128 + ${2}))"
+else
+ exit_code="${1}"
+fi
+
+# Make the container exit with the same exit code as the service
+echo "${exit_code}" > /run/s6-linux-init-container-results/exitcode
+exec /run/s6/basedir/bin/halt

docker/rootfs/etc/services.d/frigate/log/run

@@ -0,0 +1,4 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+
+exec logutil-service /dev/shm/logs/frigate

docker/rootfs/etc/services.d/frigate/run

@@ -0,0 +1,11 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+# Start the Frigate service
+
+set -o errexit -o nounset -o pipefail
+
+cd /opt/frigate
+
+# Replace the bash process with the Frigate process, redirecting stderr to stdout
+exec 2>&1
+exec python3 -u -m frigate

docker/rootfs/etc/services.d/go2rtc/finish

@@ -1,6 +1,7 @@
 #!/command/with-contenv bash
 # shellcheck shell=bash
-# Take down the S6 supervision tree when the process fails
+# Take down the S6 supervision tree when the service fails, or restart it
+# otherwise
 
 if [[ "${1}" -ne 0 && "${1}" -ne 256 ]]; then
  exec /run/s6/basedir/bin/halt

docker/rootfs/etc/services.d/go2rtc/log/run

@@ -0,0 +1,4 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+
+exec logutil-service /dev/shm/logs/go2rtc

docker/rootfs/etc/services.d/go2rtc/run

@@ -1,13 +1,15 @@
 #!/command/with-contenv bash
 # shellcheck shell=bash
+# Start the go2rtc service
 
-# https://gist.github.com/mohanpedala/1e2ff5661761d3abd0385e8223e16425?permalink_comment_id=3945021
-set -euo pipefail
+set -o errexit -o nounset -o pipefail
 
 if [[ -f "/config/frigate-go2rtc.yaml" ]]; then
  config_path="/config/frigate-go2rtc.yaml"
 else
  config_path="/usr/local/go2rtc/go2rtc.yaml"
 fi
 
+# Replace the bash process with the go2rtc process, redirecting stderr to stdout
+exec 2>&1
 exec go2rtc -config="${config_path}"

docker/rootfs/etc/services.d/nginx/finish

@@ -1,6 +1,7 @@
 #!/command/with-contenv bash
 # shellcheck shell=bash
-# Take down the S6 supervision tree when the process fails
+# Take down the S6 supervision tree when the service fails, or restart it
+# otherwise
 
 if [[ "${1}" -ne 0 && "${1}" -ne 256 ]]; then
  exec /run/s6/basedir/bin/halt

docker/rootfs/etc/services.d/nginx/log/run

@@ -0,0 +1,4 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+
+exec logutil-service /dev/shm/logs/nginx

docker/rootfs/etc/services.d/nginx/run

@@ -1,4 +1,7 @@
 #!/command/with-contenv bash
 # shellcheck shell=bash
+# Start the NGINX service
 
+# Replace the bash process with the NGINX process, redirecting stderr to stdout
+exec 2>&1
 exec nginx

docker/rootfs/usr/local/bin/frigate

@@ -0,0 +1,5 @@
+#!/command/with-contenv bash
+# shellcheck shell=bash
+
+exec 2>&1
+exec python3 -u -m frigate "${@}"

docker/rootfs/usr/local/nginx/conf/nginx.conf

@@ -2,7 +2,7 @@ daemon off;
 user root;
 worker_processes 1;
 
-error_log /usr/local/nginx/logs/error.log warn;
+error_log /dev/stdout warn;
 pid /var/run/nginx.pid;
 
 events {
@@ -17,7 +17,7 @@ http {
  '$status $body_bytes_sent "$http_referer" '
  '"$http_user_agent" "$http_x_forwarded_for"';
 
- access_log /usr/local/nginx/logs/access.log  main;
+ access_log /dev/stdout  main;
 
  sendfile  on;