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Posted to commits@brooklyn.apache.org by al...@apache.org on 2016/09/12 09:02:11 UTC

[1/2] brooklyn-docs git commit: Advise running ntpd on Brooklyn server

Repository: brooklyn-docs
Updated Branches:
  refs/heads/master 25a6f5945 -> 9bb079f24


Advise running ntpd on Brooklyn server


Project: http://git-wip-us.apache.org/repos/asf/brooklyn-docs/repo
Commit: http://git-wip-us.apache.org/repos/asf/brooklyn-docs/commit/e466288e
Tree: http://git-wip-us.apache.org/repos/asf/brooklyn-docs/tree/e466288e
Diff: http://git-wip-us.apache.org/repos/asf/brooklyn-docs/diff/e466288e

Branch: refs/heads/master
Commit: e466288e9b082aaede6d8dcb4c2b67023e125099
Parents: 25a6f59
Author: Aled Sage <al...@gmail.com>
Authored: Thu Sep 8 16:30:17 2016 +0100
Committer: Aled Sage <al...@gmail.com>
Committed: Mon Sep 12 09:59:03 2016 +0100

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 guide/ops/production-installation.md    |  1 +
 guide/ops/troubleshooting/deployment.md | 11 +++++++----
 2 files changed, 8 insertions(+), 4 deletions(-)
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http://git-wip-us.apache.org/repos/asf/brooklyn-docs/blob/e466288e/guide/ops/production-installation.md
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diff --git a/guide/ops/production-installation.md b/guide/ops/production-installation.md
index b6959da..5cd69a8 100644
--- a/guide/ops/production-installation.md
+++ b/guide/ops/production-installation.md
@@ -34,6 +34,7 @@ Then configure the server as follows:
 * check that the [linux kernel entropy]({{ site.path.guide }}/ops/troubleshooting/increase-entropy.html) is sufficient
 * check that the [ulimit values]({{ site.path.guide }}/ops/troubleshooting/increase-system-resource-limits.html) are sufficiently high
 * ensure external libraries are up-to-date, including `nss` for SSL. 
+* ensure the time is continually accurate, ideally by running a service like the [ntp daemon](http://www.ntp.org/).
 
 
 ### <a id="download"></a>Download Apache Brooklyn

http://git-wip-us.apache.org/repos/asf/brooklyn-docs/blob/e466288e/guide/ops/troubleshooting/deployment.md
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diff --git a/guide/ops/troubleshooting/deployment.md b/guide/ops/troubleshooting/deployment.md
index cb8559b..b84ac35 100644
--- a/guide/ops/troubleshooting/deployment.md
+++ b/guide/ops/troubleshooting/deployment.md
@@ -40,9 +40,12 @@ means there was some problem obtaining or connecting to the machine.
 An error like `... Not authorized to access cloud ...` usually means the wrong identity/credential was used.
 
 AWS requires a X-Amz-Date header which contains the date of the Apache Brooklyn AWS client.
-If the date on the server is wrong, for example several minutes behind you will get Authorization Exception.
-Please be sure that the machine which is running Apache Brooklyn set its clock correctly.
-To set the time on Linux we advice to use the ntp client: `sudo ntpdate pool.ntp.org`.
+If the date on the server is wrong, for example several minutes behind you will get an 
+Authorization Exception. This is to prevent replay attacks. Please be sure to set the clock 
+correctly on the machine running Apache Brooklyn. To set the time on Linux you can use the ntp 
+client (e.g. `sudo ntpdate pool.ntp.org`). We advise running the 
+[ntp daemon](http://www.tldp.org/LDP/sag/html/basic-ntp-config.html) so that the clock is kept 
+continually in sync.
 
 An error like `Unable to match required VM template constraints` means that a matching image (e.g. AMI in AWS terminology) could not be found. This 
 could be because an incorrect explicit image id was supplied, or because the match-criteria could not
@@ -177,4 +180,4 @@ brooklyn.locations:
     identity: <add>
     credential: <add>
     loginUser: centos
-{% endhighlight %}
\ No newline at end of file
+{% endhighlight %}


[2/2] brooklyn-docs git commit: This closes #106

Posted by al...@apache.org.
This closes #106


Project: http://git-wip-us.apache.org/repos/asf/brooklyn-docs/repo
Commit: http://git-wip-us.apache.org/repos/asf/brooklyn-docs/commit/9bb079f2
Tree: http://git-wip-us.apache.org/repos/asf/brooklyn-docs/tree/9bb079f2
Diff: http://git-wip-us.apache.org/repos/asf/brooklyn-docs/diff/9bb079f2

Branch: refs/heads/master
Commit: 9bb079f24c3c46e17c9b3cff0e52c9bb5b664f2e
Parents: 25a6f59 e466288
Author: Aled Sage <al...@gmail.com>
Authored: Mon Sep 12 10:01:38 2016 +0100
Committer: Aled Sage <al...@gmail.com>
Committed: Mon Sep 12 10:01:38 2016 +0100

----------------------------------------------------------------------
 guide/ops/production-installation.md    |  1 +
 guide/ops/troubleshooting/deployment.md | 11 +++++++----
 2 files changed, 8 insertions(+), 4 deletions(-)
----------------------------------------------------------------------