Server Monitoring

Monitor Asterisk server

#watch -n 10 'asterisk -rx "sip show channels" | tail -n 1'

# netstat -pln | grep rtpp

Monitor HTTP Server

# watch -n 2 'netstat | grep https | wc -l'

Monitor open sockets using netstat

#netstat -ant | awk '{print $6}' | sort | uniq -c | sort -n
      1 CLOSING
      1 established
      1 FIN_WAIT2
      1 Foreign
      2 CLOSE_WAIT
      6 FIN_WAIT1
      7 LAST_ACK
      7 SYN_RECV
     37 ESTABLISHED
     44 LISTEN
    297 TIME_WAIT

Monitor Postgres server

#wget https://github.com/julmon/pg_activity/archive/master.zip
#yum install python-devel python
#python setup.py install
#sudo -u postgres pg_activity -U postgres

#wget https://github.com/zalando/pg_view/archive/master.zip
#vi ~/.bashrc
TERM=xterm-256color
#vi ~/.pgpass
localhost:5432:DBname:DBuser:DBpassword
#chmod 600 ~/.pgpass
#vi /etc/pg_view.conf
[DEFAULT]
port=5432
[ccloud_db]
host=localhost
dbname=DBname
user=DBUser
#chmod +x /usr/local/sbin/pg_view
#pg_view -c /etc/pg_view.conf

Monitor TCP, CPU and Memory collectl

# yum install epel-release
# yum install collectl 
# collectl -stcm