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pgSCV - PostgreSQL ecosystem metrics collector

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pgSCV

• collects a lot of stats about PostgreSQL environment.
• exposes metrics through the HTTP /metrics endpoint in Prometheus metrics exposition format.

IMPORTANT NOTES This project is a continuation of the development of the original pgSCV by Alexey Lesovsky

Features

• Supported services: support collecting metrics of PostgreSQL, Pgbouncer and Patroni.
• OS metrics: support collecting metrics of operating system.
• TLS and authentication. /metrics endpoint could be protected with basic authentication and TLS.
• Collecting metrics from multiple services. pgSCV can collect metrics from many databases instances.
• User-defined metrics. pgSCV could be configured in a way to collect metrics defined by user.
• Collectors management. Collectors could be disabled if necessary.
• Collectors filters. Collectors could be adjusted to skip collecting metrics based on labels values, like block devices, network interfaces, filesystems, users, databases, etc.

Requirements

• Can run on Linux only; can connect to remote services running on other OS/PaaS.
• Requisites for connecting to the services, such as login and password.
• Database user should have privileges for executing stats functions and reading views. For more details see security considerations.

Quick start

Download the archive from releases. Unpack the archive. Create minimum config file. Start pgSCV systemd service under postgres user.

curl -s -L https://github.com/cherts/pgscv/releases/download/v0.9.6/pgscv_0.9.6_linux_$(uname -m).tar.gz -o - | tar xzf - -C /tmp && \
mv /tmp/pgscv.yaml /etc && \
mv /tmp/pgscv.service /etc/systemd/system &&  \
mv /tmp/pgscv.default /etc/default/pgscv && \
mv /tmp/pgscv /usr/sbin && \
chown postgres:postgres /etc/pgscv.yaml && \
chmod 640 /etc/pgscv.yaml && \
systemctl daemon-reload && \
systemctl enable pgscv --now

or using Docker, use DATABASE_DSN for setting up a connection to PostgreSQL:

docker pull cherts/pgscv:latest
docker run -ti -d --name pgscv \
   -e PGSCV_LISTEN_ADDRESS=0.0.0.0:9890 \
   -e PGSCV_DISABLE_COLLECTORS="system" \
   -e DATABASE_DSN="postgresql://postgres:password@dbhost:5432/postgres" \
   -p 9890:9890 \
   --restart=always \
   cherts/pgscv:latest

or using Docker, save deploy/pgscv.yaml config file to local directory /etc/pgscv:

docker pull cherts/pgscv:latest
docker run -ti -d --name pgscv \
   -v /etc/pgscv:/etc/app \
   -p 9890:9890 \
   --restart=always \
   cherts/pgscv:latest \
   --config-file=/etc/app/pgscv.yaml

or using Docker-compose, edit file docker-compose.yaml for setting up a connection to PostgreSQL:

mkdir ~/pgscv
curl -s -L https://raw.githubusercontent.com/CHERTS/pgscv/master/deploy/docker-compose.yaml -o ~/pgscv/docker-compose.yaml && cd ~/pgscv
docker-compose up -d

When pgSCV has been started it is ready to accept HTTP requests at http://127.0.0.1:9890/metrics.

or using k8s deployment

curl -s -L https://raw.githubusercontent.com/CHERTS/pgscv/master/deploy/deployment.yaml -o ~/deployment.yaml
kubectl apply -f ~/deployment.yaml

or using k8s helm chart

git clone https://github.com/CHERTS/pgscv.git && cd pgscv
kubectl create ns pgscv-ns
helm install -n pgscv-ns pgscv deploy/helm-chart/

Complete setup

Checkout complete setup guide.

Documentation

For further documentation see wiki.

Grafana dashboards

See directory deploy/grafana or use Grafana Lab repo:

• pgSCV: System dashboard (ID: 21409)
• pgSCV: PostgreSQL dashboard (ID: 21430)
• pgSCV: Pgbouncer dashboard (ID: 21429)
• pgSCV: Patroni dashboard (ID: 21462)

Support and feedback

If you need help using pgSCV feel free to open discussion via email or Telegram @cherts or create an issue

Development and contribution

To help development you are encouraged to:

• provide feedback via email or Telegram @cherts or create an issue
• pull requests for new features
• star the project

Current developer and maintaner

• Mikhail Grigorev

Authors of original version

• Alexey Lesovsky

License

BSD-3. See LICENSE for more details.