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Export CLI args as ENV variables in Docker container #23

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Export CLI args as ENV variables in Docker container #23

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8 changes: 6 additions & 2 deletions Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -6,10 +6,14 @@ ENV POSTGRES_PASSWORD postgres
ENV POSTGRES_DATABASE postgres
ENV PGPOOL_SERVICE localhost
ENV PGPOOL_SERVICE_PORT 9999
ENV PGPOOL_LISTEN_ADDRESS 9179
ENV PGPOOL_METRICS_PATH /metrics
ENV PGPOOL_LOG_LEVEL info
ENV PGPOOL_LOG_FORMAT logfmt
ENV SSLMODE disable

COPY pgpool2_exporter /bin/pgpool2_exporter

CMD ["/bin/sh", "-c", "export DATA_SOURCE_USER=\"${POSTGRES_USERNAME}\" ; export DATA_SOURCE_PASS=\"${POSTGRES_PASSWORD}\" ; export DATA_SOURCE_URI=\"${PGPOOL_SERVICE}:${PGPOOL_SERVICE_PORT}/${POSTGRES_DATABASE}?sslmode=${SSLMODE}\" ; /bin/pgpool2_exporter"]
CMD ["/bin/sh", "-c", "export PGPOOL_LOG_LEVEL=\"${PGPOOL_LOG_LEVEL}\"; export PGPOOL_LOG_FORMAT=\"${PGPOOL_LOG_FORMAT}\"; export PGPOOL_METRICS_PATH=\"${PGPOOL_METRICS_PATH}\"; export PGPOOL_LISTEN_ADDRESS=\"${PGPOOL_LISTEN_ADDRESS}\"; export DATA_SOURCE_USER=\"${POSTGRES_USERNAME}\" ; export DATA_SOURCE_PASS=\"${POSTGRES_PASSWORD}\" ; export DATA_SOURCE_URI=\"${PGPOOL_SERVICE}:${PGPOOL_SERVICE_PORT}/${POSTGRES_DATABASE}?sslmode=${SSLMODE}\" ; /bin/pgpool2_exporter --web.listen-address=:${PGPOOL_LISTEN_ADDRESS} --web.telemetry-path=${PGPOOL_METRICS_PATH} --log.level=${PGPOOL_LOG_LEVEL} --log.format=${PGPOOL_LOG_FORMAT}"]

EXPOSE 9719
EXPOSE ${PGPOOL_LISTEN_ADDRESS}
18 changes: 17 additions & 1 deletion README.md
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Expand Up @@ -68,7 +68,19 @@ This package is available for Docker. The following environment variables config

* `PGPOOL_SERVICE_PORT`
Pgpool-II port number. Default is `9999`.


* `PGPOOL_LISTEN_ADDRESS`
Pgpool-II metrics listen address. Default is `9179`.

* `PGPOOL_METRICS_PATH`
Pgpool-II metrics path. Default is `/metrics`.

* `PGPOOL_LOG_LEVEL`
Pgpool-II log level. Default is `info`.

* `PGPOOL_LOG_FORMAT`
Pgpool-II log format. Default is `logfmt`.

* `SSLMODE`
Whether or not to use SSL. Default is `disable`. Valid values: disable, require, verify-ca, verify-full.

Expand All @@ -80,6 +92,10 @@ docker run --name pgpool2_exporter \
-e POSTGRES_DATABASE=<database> \
-e PGPOOL_SERVICE=<hostname> \
-e PGPOOL_SERVICE_PORT=<port> \
-e PGPOOL_LISTEN_ADDRESS=<listen port> \
-e PGPOOL_METRICS_PATH=<path> \
-e PGPOOL_LOG_LEVEL=<log level> \
-e PGPOOL_LOG_FORMAT=<log format> \
-e SSLMODE=<sslmode> \
pgpool/pgpool2_exporter:latest
```
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