53 lines
1.9 KiB
Bash
Executable File
53 lines
1.9 KiB
Bash
Executable File
#!/bin/sh
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GOBIN=/opt/gocode/bin # where to find go binaries
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CONF_DIR=/etc/prometheus
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CONF=$CONF_DIR/prometheus.yml
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LOGLEVEL=info
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config="$(cat "$__object/parameter/config")"
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retention_days="$(cat "$__object/parameter/retention-days")"
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storage_path="$(cat "$__object/parameter/storage-path")"
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listen_address="$(cat "$__object/parameter/listen-address")"
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alertmanager_url="$(cat "$__object/parameter/alertmanager-url")"
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target_heap_size="$(cat "$__object/parameter/target-heap-size")"
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rule_files="$(cat "$__object/parameter/rule-files")"
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# explorer in kB => convert; by default we go with 1/2 RAM
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[ "$target_heap_size" = "auto" ] && target_heap_size=$(($(cat $__global/explorer/memory)*1024/2))
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FLAGS="config.file '$CONF'
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storage.local.path '$storage_path'
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storage.local.target-heap-size $(($target_heap_size)) # in bytes; should be 2/3 of available memory because it may be hungry
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storage.local.retention $(($retention_days*24))h # golang doesn't have days :D
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web.listen-address '$listen_address'
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alertmanager.url '$alertmanager_url'
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log.level $LOGLEVEL"
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REAL_FLAGS="$(echo "$FLAGS" | sed -nE 's/^([^#]+).*/ --\1 \\/p')"
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__go_get github.com/prometheus/prometheus/cmd/...
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__user prometheus --system
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require="__user/prometheus" __directory "$storage_path" --owner prometheus
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require="__user/prometheus" __directory "$CONF_DIR" --owner prometheus
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__daemontools_service prometheus --run "setuidgid prometheus $GOBIN/prometheus $REAL_FLAGS"
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require="$require __directory/$storage_path __user/prometheus" \
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__config_file $CONF \
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--source $config \
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--group prometheus --mode 640 \
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--onchange "$GOBIN/promtool check-config $CONF && svc -h /service/prometheus"
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for file in $rule_files; do
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dest=$CONF_DIR/$(basename $file)
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require="$require __directory/$CONF_DIR __user/prometheus" \
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__config_file "$dest" \
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--source "$file" \
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--owner prometheus \
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--onchange "$GOBIN/promtool check-rules '$dest' && svc -h /service/prometheus"
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done
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