traffic_line should warn if a command didn't succeed
----------------------------------------------------
Key: TS-972
URL: https://issues.apache.org/jira/browse/TS-972
Project: Traffic Server
Issue Type: Improvement
Components: Management API
Affects Versions: 3.0.1, 3.1.0
Reporter: Arno Toell
{{traffic_line}} is a handy tool to manage a traffic server instance. For
example it is possible to retrieve and set configuration settings through
command line like this:
{code}
root@wv-tmp2:/home/at# traffic_line -r proxy.config.http.server_port ; echo $?
81
0
{code}
However, some commans can be set, but aren't effective until the server is
restarted, despite of ATS offering the _-x_ option to flush configuration and
reread new settings:
{code}
root@wv-tmp2:/home/at# traffic_line -s proxy.config.http.server_port -v 80 ;
echo $?
0
root@wv-tmp2:/home/at# traffic_line -x ; echo $?
0
{code}
Trafficserver should possibly warn when setting such settings which aren't
effective until the server is restarted and leave with a non-zero exit status
for _-x_ in such cases.
Moreover {{traffic_line}} does not work at all if the manager is not running:
{code}
# traffic_line -r proxy.config.http.server_port ; echo $?
traffic_line: Variable Not Found
1
{code}
That's all right, but the error message shall be improved telling that. :)
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