> ## Documentation Index > Fetch the complete documentation index at: https://docs-v2.ard.co/llms.txt > Use this file to discover all available pages before exploring further. # Sensu Alerts & Operational Issues > Common operational issues, troubleshooting steps, and recovery procedures for ModMS and Pinpoint services This document tracks common operational issues, their resolutions, and troubleshooting procedures for ModMS and Pinpoint services. ## Operational Issues Log | Component | Example | Server | Issue | Details | Action Taken | Command | | ---------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------- | -------------------------------------------------- | --------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Sams Server Raw Data Storage** | | `sams.devops.arabiaweather.com` | Disk filling with raw data | Satellite data accumulation | Regularly delete old raw data | `cd /data/raw-data`
`# remove old data` | | **Sams Log Files** | [Sensu Alert](https://sensu.devops.arabiaweather.com/#/client/ArabiaWeather%20Sensu/sams.devops.arabiaweather.com?check=disk_usage) | `sams.devops.arabiaweather.com` | Excessive log file growth | Log files grew too large on the Sams server | Truncated log files | `df -h`
`find / -xdev -type f -size +500M 2>/dev/null`
`truncate -s 0 /var/lib/docker/containers//*.log` | | **Historical Server pengine Cronjob** | | `htz-historical-01` (144.76.56.17) | High memory usage | `pengine` cronjob consuming excessive memory | Killed all `pengine` processes | `killall -9 pengine` | | **Redis Sentinel Alert** | | `cluster-n03`, `cluster-n04` | Unnecessary monitoring alert | Only two Redis nodes; Sentinel not required | Disabled Redis Sentinel alert | *No command specified* | | **Redis Ping Failure (node03 → node04)** | | `cluster-n03`, `cluster-n04` | Slave-to-master ping failure | node03 slave couldn't ping node04 master on port 3680 through HAProxy | Restarted HAProxy on node03 | `redis-cli info replication`
`systemctl reload haproxy` | | **Bader 1** | | `bader-deploy` (85.10.197.28) | Containers unhealthy | Docker containers showing unhealthy status | Restart unhealthy containers | `docker container ls -a`
`# restart unhealthy container` | | **Bader 2** | | `bader.arabiaweather.com` | Restart order causing lost events | Removed `last_state` and cleared processed map keys; aggregator republished before engine was ready | Restart engine first, then aggregator | `cd data/aggregator-downloads/`
`rm last_state`
`redis-cli keys 'maps:processed_files:*' \| xargs redis-cli del`
`systemctl restart engine.service`
`systemctl restart aggregator.service` | | **Charts Archiver Jobs** | [Sensu Alert](https://sensu.devops.arabiaweather.com/#/client/ArabiaWeather%20Sensu/AW-Sensu-Client?check=charts_archiver_jobs) | `backend-charts-1` (3.249.150.105), `backend-charts-2` (34.246.218.122) | Disk space issues, deleted processes holding space | Deleted processes consuming disk space, preventing proper operation | Check disk space, identify and clean up deleted processes, restart unicorn | `df -h`
`sudo lsof \| grep deleted`
`# delete identified processes`
`cd /path/to/aw_charts_backend`
`/etc/init.d/unicorn start` | ## Known Instability Issues * [Pinpoint Temperature Deviation](https://linear.app/ardlabs/issue/ARD-3070/temperatures-deviation-pinpoint) * [Pinpoint Overrider Not Responding](https://linear.app/ardlabs/issue/ARD-3068/overrider-not-responding)