在线安装Pie Chart
官网：https://grafana.com/grafana/plugins/grafana-piechart-panel
# grafana-cli plugins install grafana-piechart-panel
# systemctl restart grafana-server离线安装Pie Chart
自行编译
参考：https://grafana.com/grafana/plugins/grafana-piechart-panel
# cd /var/lib/grafana/plugins/
# git clone https://github.com/grafana/piechart-panel.git
# yarn
# yarn build
# systemctl restart grafana-server官方编译
参考：https://grafana.com/grafana/plugins/grafana-piechart-panel/installation
已编译zip包：https://grafana.com/api/plugins/grafana-piechart-panel/versions/1.3.8/download
# unzip -q grafana-piechart-panel-v1.3.8-0-g4f34110.zip
# mv grafana-piechart-panel-4f34110 grafana-piechart-panel
# mv grafana-piechart-panel /var/lib/grafana/plugins/
# systemctl restart grafana-server