Server and log monitoring system?

Question

linux

Good afternoon,
Is there a monitoring system (cloud with a sane price tag / open source) capable of:

1. Standard monitoring(+alerts) Linux+NGINX+Apache+PHP(including SQL)
   
2. Similarly, monitoring Windows+MSSQL
   
3. Collecting/displaying logs from all of the above systems
   

Answer 1

ELK:
https://www.elastic.co/products
https://habrahabr.ru/post/277029/

Answer 2

I don’t know about collecting logs, but Nagios .

Answer 3

You can also try Splunk, if you have less than 500 MB of logs per day, then you can get by with the free version

Answer 4

Collect logs in Graylog2
Then both Zabbix and Graylog look beautiful through Grafana Virtual
machine in 4 cores and 8 memory easily copes with a stream of about 10 million lines from syslogs per day. (maybe more, but there is no such load yet)

Answer 5

There are many open source monitoring systems. To collect logs, there is a popular ELK solution to store logs, centrally view the system administrator, etc. Alerts are usually built not on the processing of logs, but on the collection of metrics, and based on these metrics, some notification rules are already triggered.
Accordingly: you choose event monitoring to your liking, configure ELK or one of its options (someone else adds Graylog, etc.), and then there will be a much more accurate understanding of what really needs to be monitored, how notify how much data to store. Under this refined understanding, more suitable tools are selected.
PS The main thing is not to treat monitoring as a complete "set it and forget it" system - monitoring is constantly changing following the growth of the qualifications of admins who use monitoring. Plus, the business also wants to see some metrics, and following the growth of the business, these Wishlist also change.