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prometheus: serve 9274 via nginx instead of ncat (#85)

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kx1t 2024-05-01 14:31:44 -04:00 committed by GitHub
commit a4e71646e6
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6 changed files with 24 additions and 35 deletions
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0
rootfs/etc/s6-overlay/s6-rc.d/prometheus-readsb/dependencies.d/startup
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2
rootfs/etc/s6-overlay/s6-rc.d/prometheus-readsb/run
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@ -1,2 +0,0 @@
#!/bin/sh
exec /etc/s6-overlay/scripts/prometheus-readsb

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rootfs/etc/s6-overlay/s6-rc.d/prometheus-readsb/type
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@ -1 +0,0 @@
longrun

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rootfs/etc/s6-overlay/s6-rc.d/user/contents.d/prometheus-readsb
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32
rootfs/etc/s6-overlay/scripts/prometheus-readsb
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@ -1,32 +0,0 @@
#!/command/with-contenv bash
# shellcheck shell=bash disable=SC1091
source /scripts/common
#---------------------------------------------------------------------------------------------
# Copyright (C) 2023-2024, Ramon F. Kolb (kx1t) and contributors
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with this program.
# If not, see <https://www.gnu.org/licenses/>.
#---------------------------------------------------------------------------------------------
if chk_enabled "$PROMETHEUS_ENABLE"; then
while [[ ! -f /run/readsb-prometheus.prom ]]
do
sleep 1
done
trap "pkill -P $$ || true; s6wrap --timestamps --prepend=prometheus-readsb --quiet --args echo 'service stopping'; exit 0" SIGTERM SIGINT SIGHUP SIGQUIT
echo -e "HTTP/1.1 200 OK\nContent-Type: text/plain\n\n$(cat /run/readsb-prometheus.prom)" | ncat -l "${PROMETHEUSPORT:-9274}" > /dev/null 2>&1 &
wait
else
exec sleep infinity
fi

24
rootfs/etc/s6-overlay/startup.d/99-prometheus-conf Executable file
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@ -0,0 +1,24 @@
#!/command/with-contenv bash
source /scripts/common
if ! chk_enabled "$PROMETHEUS_ENABLE"; then
exit 0
fi
# serve port 9274 always replying with stats.prom regardless of requested path
cat > /etc/nginx/sites-enabled/prometheus_9274 <<EOF
server {
listen 9274 default_server;
root /var/www/html;
server_name _;
location /metrics {
alias /run/readsb/stats.prom;
}
location / {
alias /run/readsb/stats.prom;
rewrite (.*) /metrics last;
}
}
EOF