Self Remediation

Self remediation the buzz word


ping - is the host up
telnet - Are the respective ports up and running
            is only one port up , or all the associated ports up ?
SSH to the host , is the host is up ? something wrong with network ?

CPU
Memory
Wget - what is the response of the Application
Application changed ? - what was the change ?
                                     - can it be backed out ?

traceroute - what component of the application changed ?
                 - is there a database associated with it ?
             

CD - all the associated apis  , are they up and running ?
      - CPU , Memory, Response time
      - Degradation over time
      - Memory leaks

Is there only  one host in the cluster or multiple hosts in the cluster ?
is it clustered ?
                   is it a front end issue or a backend issue ?
Do we have the same response from all the workers ?
How do the ulimits look ?
se linux ?
iptables ?
firewalls ?
lsof - list of open files ?
JVM Heap usage ?
NFS file storate ?
Connection resets - ?
Idle timeouts ?
Cookie timing out ?
iftop
netstat - TimeWAITS
netstat - tulpn
Is there a port open that is not supposed to be open ?