Skip to content

Latest commit

 

History

History
84 lines (53 loc) · 2.58 KB

ex6.md

File metadata and controls

84 lines (53 loc) · 2.58 KB
Raw

Check and fix

This tutorial covers:

  1. Verifying that the system is running according to expectations
  2. Fixing the system after two containers are killed off

Verify sudc is running

Open the sudc application in the browser:

open http://$(boot2docker ip):8000 # Mac OS X
open http://localhost:8000 # linux

Let's double check that sudc is working as expected by running:

nsd system check sudc

You should see the following output:

Looking good! No deviation detected

The check command runs a system analysis to verify that everything is looking good! We can view the output of that analysis by running:

nsd system analyze sudc

Kill two of the containers

Now we'll kill the web and doc-srv containers:

docker ps
docker kill <web container id>
docker kill <doc container id>

Then we'll verify sudc is not running:

open http://$(boot2docker ip):8000 # Mac OS X
open http://localhost:8000 # linux

The address should be unreachable.

Now let's do the check again:

nsd system check sudc

We should see some output similar to the following:

Deviation from deployed revision detected!
Remedial action plan as follows:

execution plan: 
Command                        Id                                                
add                            f9a8f2b4-19f6-4538-97a7-4a52fdfdef4b              
start                          f9a8f2b4-19f6-4538-97a7-4a52fdfdef4b              
link                           f9a8f2b4-19f6-4538-97a7-4a52fdfdef4b              
add                            7fdbeda8-affe-4e47-9b86-ca8d5b2124ff              
start                          7fdbeda8-affe-4e47-9b86-ca8d5b2124ff              
link                           7fdbeda8-affe-4e47-9b86-ca8d5b2124ff              

operations: 
Host                 Command                                                                                                                                               
localhost            docker run -e WEB_HOST=10.75.29.243 -p 8000:8000 -d sudc/web-231 sh /web/run.sh                                                                       
localhost            docker run -p 9002:9002 -d sudc/doc-srv-30 /usr/bin/node /srv/doc-srv                                                                                 

run 'system fix' to execute

System fix and sudc redeploy

Let's do a system fix to get sudc up and running again:

nsd system fix sudc

And check sudc is working as expected again:

nsd system check sudc

open http://$(boot2docker ip):8000 # Mac OS X
open http://localhost:8000 # linux