Now if its more metric data you are using and want to do APM, prometheus is your man https://prometheus.io/, want to make prometheus your full time job? Deploy cortex https://cortexmetrics.io/, honorable mention in the metrics space, Zabbix, https://www.zabbix.com/ I've seen use cases of zabbix going way beyond its intended use its a fantastic tool. Source: 12 months ago

Yes, but also no. The Prometheus ecosystem already has two FOSS time-series databases that are complementary to Prometheus itself. Thanos and Mimir. Not to mention M3db, developed at Uber, and Cortex, then ancestor of Mimir. There's a bunch of others I won't mention as it would take too long. Source: about 1 year ago

You can use the Remote write feature to send to a centralized location. It would have to be scalable like Cortex https://cortexmetrics.io/. Source: over 1 year ago

For a homelab I think prometheus + grafana is easy to get started and scales well. There are lots of ways to set up the architecture. Prometheus can write to a directory on a filesystem, it can be set to write to a remote server, and there are other projects to integrate object storage (s3, minio, etc) or influxdb for long term storage and downsampling. Source: almost 2 years ago

A decade ago I worked for a shop that needed to routinely back up 100+ cisco switches and routers and refused to pay for solarwinds. I setup a light weight freebsd vm to run this open source software: https://shrubbery.net/rancid/ (Rancid: Really Awesome New Cisco config Differ) and set it to scrape all the equipment every 12 errors. Source: over 1 year ago

Anyways Rancid does support cvs, svn, and git. Though I have only used it with cvs. Basically what it does, is checks out the configuration, downloads the configuration with other information about the state of the device, commits the configurations(which only changed ones will be in the latest check-ins, and then it can send an email of the changes. Source: about 2 years ago

RANCID - Really Awesome New Cisco confIg Differ monitors a router's (or more generally a device's) configuration, including software and hardware (cards, serial numbers, etc) and uses CVS (Concurrent Version System), Subversion or Git to maintain history of changes. Source: about 2 years ago

If you want to use this as an opportunity to learn Ansible, or you don't want to add another tool to the stack, this is a fine use case. Otherwise, I would consider using either RANCID or Oxidized for configuration backup. Source: about 2 years ago

Before I knew about RANCiD (https://shrubbery.net/rancid), I wrote my own Perl application to telnet into a Foundry Networks switch and TFTP its configuration to my computer so I could back it up. At a future employer, I rewrote another coworkers Perl application that collected SNMP values from devices and did stuff with it (forget what all I did then). Source: over 2 years ago