Difference between revisions of "Monitoring Servers"
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=== Monitoring Servers === | <includeonly>=== Monitoring Servers ===</includeonly> | ||
Any server in the system can become a bottleneck, at some point, so it's a good idea to continually monitor the health of the critical processes that run on them. This section lists the components to monitor on each server. | Any server in the system can become a bottleneck, at some point, so it's a good idea to continually monitor the health of the critical processes that run on them. This section lists the components to monitor on each server. | ||
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:* Dropped packets | :* Dropped packets | ||
:* Socket wear and tear | :* Socket wear and tear | ||
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Latest revision as of 21:38, 2 October 2013
Any server in the system can become a bottleneck, at some point, so it's a good idea to continually monitor the health of the critical processes that run on them. This section lists the components to monitor on each server.
Monitoring Application Servers
- tomcat availability and CPU utilization. Check threads, connection pool size, sticky sessions, KeepAliveRequests, etc.
- GC – Allocation and de-allocation of memory on the JVM. (Monitoring and Tuning Garbage Collection)
- OS (Linux) CPU utilization, IO activity, swap ratio, context switches, etc. (Monitoring OS Statistics)
Monitoring Web Servers
- apache-httpd availability
- OS (Linux) CPU utilization, IO activity, swap ratio, context switches, etc. (Monitoring OS Statistics)
Monitoring Database Servers
- mysql availability. Check caches, buffers, connections, timeouts. (Monitoring and Tuning MySQL)
- OS (Linux) CPU utilization, IO activity, swap ratio, context switches, etc. (Monitoring OS Statistics)
- Note: If replication is employed, scripts can be written to check the health of the replication and report replication lag times.
Monitoring memcached Servers
- memcached availability
- OS (Linux) CPU utilization, IO activity, swap ratio, context switches, etc. (Monitoring OS Statistics)
Monitoring the Network
- Dropped packets
- Socket wear and tear