Is it possible to test nscd for a particular dns name
I installed nscd (Naming Service Cache Deamon) on ec2 instance for avoiding dns resolution issues while accessing database.
The following are the ways i tried to test to check whether the caching is working properly or not
1) created a route53 dns record which points to my database.
2) tested out my endpoints.
3) deleted the dns record and hit the endpoints again.
4) the db connection was broken (Meaning the host name is not cached in ec2 instance or nscd is smart to detect the presence of dbs name which i am not sure)
5) I tried to retaining the dns record and pointed to junk value.still the db is broken.
I want help to understand nscd works and is there any way to verify its purpose.
linux amazon-ec2
asked Nov 13 '18 at 5:36
Sandeep PoomangalathSandeep Poomangalath
14
add a comment |
I installed nscd (Naming Service Cache Deamon) on ec2 instance for avoiding dns resolution issues while accessing database.
The following are the ways i tried to test to check whether the caching is working properly or not
1) created a route53 dns record which points to my database.
2) tested out my endpoints.
3) deleted the dns record and hit the endpoints again.
4) the db connection was broken (Meaning the host name is not cached in ec2 instance or nscd is smart to detect the presence of dbs name which i am not sure)
5) I tried to retaining the dns record and pointed to junk value.still the db is broken.
I want help to understand nscd works and is there any way to verify its purpose.
linux amazon-ec2
asked Nov 13 '18 at 5:36
Sandeep PoomangalathSandeep Poomangalath
14
add a comment |
I installed nscd (Naming Service Cache Deamon) on ec2 instance for avoiding dns resolution issues while accessing database.
The following are the ways i tried to test to check whether the caching is working properly or not
1) created a route53 dns record which points to my database.
2) tested out my endpoints.
3) deleted the dns record and hit the endpoints again.
4) the db connection was broken (Meaning the host name is not cached in ec2 instance or nscd is smart to detect the presence of dbs name which i am not sure)
5) I tried to retaining the dns record and pointed to junk value.still the db is broken.
I want help to understand nscd works and is there any way to verify its purpose.
linux amazon-ec2
asked Nov 13 '18 at 5:36
Sandeep PoomangalathSandeep Poomangalath
14
I installed nscd (Naming Service Cache Deamon) on ec2 instance for avoiding dns resolution issues while accessing database.
The following are the ways i tried to test to check whether the caching is working properly or not
1) created a route53 dns record which points to my database.
2) tested out my endpoints.
3) deleted the dns record and hit the endpoints again.
4) the db connection was broken (Meaning the host name is not cached in ec2 instance or nscd is smart to detect the presence of dbs name which i am not sure)
5) I tried to retaining the dns record and pointed to junk value.still the db is broken.
I want help to understand nscd works and is there any way to verify its purpose.
linux amazon-ec2
linux amazon-ec2
asked Nov 13 '18 at 5:36
Sandeep PoomangalathSandeep Poomangalath
14
asked Nov 13 '18 at 5:36
Sandeep PoomangalathSandeep Poomangalath
14
asked Nov 13 '18 at 5:36
Sandeep PoomangalathSandeep Poomangalath
14
asked Nov 13 '18 at 5:36
Sandeep PoomangalathSandeep Poomangalath
14
asked Nov 13 '18 at 5:36
Sandeep PoomangalathSandeep Poomangalath
14
14
add a comment |
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function ()
StackExchange.using("externalEditor", function ()
StackExchange.using("snippets", function ()
StackExchange.snippets.init();
);
);
, "code-snippets");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "1"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53274466%2fis-it-possible-to-test-nscd-for-a-particular-dns-name%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53274466%2fis-it-possible-to-test-nscd-for-a-particular-dns-name%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
