topic Starting and stopping the EV Agent service in Administration and Deployment

Starting and stopping the EV Agent service

Nigel_Pain — Fri, 10 Jun 2022 15:46:22 GMT

SAS 9.4M7 on Windows 2012R2

I just renewed the SSL certificate on our mid-tier server, and the Java keystores for the webapps and Environment Manager. When I restarted EV the agents weren't managing to communicate with the EV Server. TS advised a solution to this, which was to remove the agent data directory and start using the command line rather than Windows Service Manager as per KB52668:

config\Lev1\Web\SASEnvironmentManager\agent-5.8.0-EE\bin\hq-agent.bat start

This worked. There were various messages which appeared after the command was run:

wrapper | Starting the SAS [config-Lev1] SAS Environment Manager Agent service... wrapper | Waiting to start... wrapper | SAS [config-Lev1] SAS Environment Manager Agent started. [ Running agent setup ] Should Agent communications to HQ be unidirectional [default=no]: yes What is the HQ server IP address: server.domain Should Agent communications to HQ always be secure [default=yes]: Yes What is the HQ server SSL port [default=7443]: 7443 - Testing secure connection ... Success What is your HQ login [default=hqadmin]: sasevs@saspw What is your HQ password: **Not echoing value** What is the agent IP address [default=***.***.***.***]: server.domain - Received temporary auth token from agent - Registering agent with HQ - HQ gave us the following agent token 1654862220270-8565811125738354432-5097207690335336169 - Informing agent of new HQ server - Validating - Successfully setup agent - Agent using new transport, unidirectional=true, port=7443

So my question is, what's the difference between running the command line and stopping/starting with Service Manager? TS weren't able to say.

Thanks.

Re: Starting and stopping the EV Agent service

gwootton — Fri, 10 Jun 2022 16:46:42 GMT

Running from the command line lets you see that output to confirm communication to the EV server was successful or if not, surface any failures that occurred during agent setup.

Re: Starting and stopping the EV Agent service

Nigel_Pain — Fri, 10 Jun 2022 16:55:34 GMT

Thanks Greg. But when I ran from services it didn't work, whilst running from the command line it worked first time. I can only think that the actual command run in the Windows Service must be different?

Re: Starting and stopping the EV Agent service

gwootton — Fri, 10 Jun 2022 17:14:56 GMT

The service runs:
C:\sas94\Config\Lev1\Web\SASEnvironmentManager\agent-5.8.0-EE\wrapper\sbin\wrapper-windows-x86-32.exe -s C:\sas94\Config\Lev1\Web\SASEnvironmentManager\agent-5.8.0-EE\conf\wrapper.conf

hq-agent.bat runs (when called with start):
:start
"%_WRAPPER_EXE%" -t %_WRAPPER_CONF% "%wrapper_update1%"
ping -3 XXX 127.0.0.1 >nul
call :setup-if-no-provider
goto :eof

The "setup-if-no-provider" bit runs the communication setup piece you see in the command line output (if it doesn't have a connection to the ev server set up already).