Add postgresql exporter

PORT-ALLOCATION

@@ -35,6 +35,7 @@ Internal ports: 7500-7600
 	    RPC:        7579
 	Prometheus:
 	    node_exporter: 7580
+	    pgsql_exporter:7582
 	HAProxy PROM:   7581
 	Promtail:       7590
 

config/prometheus/APKBUILD

@@ -3,7 +3,7 @@
 
 . ../APKBUILD-config.template
 
-pkgver=2022.02.19.01
+pkgver=2022.03.09.01
 pkgrel=0
 source="
 	config.yaml
@@ -15,5 +15,5 @@ package() {
 }
 
 sha512sums="
-3c75373c1f06ac3d99ea422bcaaeecdc749c8073e68a1cebf1dbb1c2528ec0f263c91a11919bb990a185d9565d69fb7e00ca7f185f0c8688c11c2d64bbf5b9be  config.yaml
+00b8def046d516fa9c3f294116fff40308162b661206d7502e63b045c32b762c6f36d97f4f9d9b606e190a135b553601f6fa5836867e9a84995c81298a5c97b9  config.yaml
 "

config/prometheus/config.yaml

@@ -10,3 +10,7 @@ scrape_configs:
           dns_sd_configs:
                 - names: [ 'frontends.prometheus.routinginfo.internal' ]
                   type: 'SRV'
+        - job_name: "postgresql"
+          dns_sd_configs:
+                - names: [ 'postgresql.prometheus.routinginfo.internal' ]
+                  type: 'SRV'

data/bindzone/APKBUILD

@@ -3,7 +3,7 @@
 
 . ../APKBUILD-data.template
 
-pkgver=2022.02.19.01
+pkgver=2022.03.09.01
 pkgrel=0
 checkdepends="bind-tools"
 makedepends="
@@ -70,5 +70,5 @@ internal() {
 
 sha512sums="
 7232c54d1b07910631af39424ae58e7749b9411ba79aae31e8ff90547faadc9219a7c878fc48d3380aee80eb57dea4493781cfdaae3bf55bfc25411a7412d1b2  redxen.eu
-7b03c3984450db16be855543eb2f3732c0aa51286695991b5c2ff01b7e973d1046dac73ef4159f615b72a090149153f46de6c0ba4df0470febdb12ce4dbef815  internal
+44fa29c434d7f2dc34db4ed7c8c81761d3e09a7c2bb4639742285cb4dd6e9a870bf7c99ea68806c0067515d3c05ef09478d63b9c667137a5f486a62d89e995bf  internal
 "

data/bindzone/internal

@@ -30,6 +30,7 @@ node_exporters.prometheus.routinginfo                   SRV    0 5 7580 12180623
                                                         SRV    0 5 7580 12180711.fsn1-dc14.hetzner
 frontends.prometheus.routinginfo                        SRV    0 5 7581 12180621.nbg1-dc3.hetzner
                                                         SRV    0 5 7581 12180711.fsn1-dc14.hetzner
+postgresql.prometheus.routinginfo                       SRV    0 5 7582 12180625.nbg1-dc3.hetzner
 _grafana._tcp.routinginfo                               SRV    0 5 7577 12180621.nbg1-dc3.hetzner
                                                         SRV    0 5 7577 12180710.fsn1-dc14.hetzner
 _gitea._tcp.routinginfo                                 SRV    0 5 7570 12180711.fsn1-dc14.hetzner

openrc/prometheus-postgres-exporter/APKBUILD

@@ -0,0 +1,13 @@
+# Contributor: Alex Denes <caskd@redxen.eu>
+# Maintainer: Alex Denes <caskd@redxen.eu>
+
+. ../APKBUILD-openrc.template
+
+pkgver=2022.03.11.01
+pkgrel=0
+depends="openrc $_rx_pkgname"
+
+sha512sums="
+58b2969418f32e9cde4506d7c48047cfb830e6f32b0f9c6c5e8c1123f610233c3c5c4806b8077c860f50e59eb73b7793e1102787c42e632455dab4ea4efe83ed  runfile
+d2c39e4e7e282a6e5014789a7422d6059ab94394e493b71702f8704e28e7b8af99116fea57f87ea6cc7a0d3c6a7bc5c55cb46db670e963fd022970c06ac0e27a  conffile
+"

openrc/prometheus-postgres-exporter/conffile

@@ -0,0 +1 @@
+command_args="--web.listen-address=':7582'"

openrc/prometheus-postgres-exporter/runfile

@@ -0,0 +1,17 @@
+#!/sbin/openrc-run
+supervisor=supervise-daemon
+
+command="/usr/bin/postgres_exporter"
+command_background="yes"
+command_user="postgres:prometheus"
+
+pidfile="/var/run/${SVCNAME}.pid"
+
+depend() {
+	need net
+	after firewall
+}
+
+start_pre() {
+	export DATA_SOURCE_NAME="postgresql:///postgres?host=/run/postgresql&port=7550&sslmode=disable&user=postgres"
+}