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Push public key to remote hosts in a batch
Sometimes it is easy to use the passwordless SSH authentication against the remotes hosts. I wrote a script that can push your public key to remote hosts in a batch. The script can be downloaded from here
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Update puppet tags
This script allow you to apply the specified puppet tags to the listed hosts. It will do a dry run against the first host, if you are happy with the results then you can kick off the changes to all …...
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Use sed to append a file to another
To append file2 to a specific line in file1, here is command: sed -i “<line>r file2″ file1 Example:
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Apache mod_rewrite URL redirect script
I wrote a bash script to automate the Apache (mod_rewrite) URL redirection. It supports 3 types of redirection: - One to One: eg. From http://jackiechen.local/mylab To http://jackiechen.org./mylab -...
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Show public IP in Linux command
In Linux console, run the following command to show the public IP address of the machine. curl echoip.net ; echo
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SELinux block timedatectl changes
Just found out this morning that if SELinux is in enforcing mode, it may block the timedatectl command to run in RHEL7. Once changing SELinux to permissive, the problem is gone. Here is the error that...
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Automate Akamai Cloudlets Edge Redirect
This is one of my side projects. It is written in Python and Bash. The step is very straight forward: Download the current production version -> Add the rules, then pushes it to the staging ->...
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Run query via Sumologic API
SumoLogic query can also be run via API. Here is a bash example that I wrote to get the nginx access logs. By default it searches the logs in the past 10 minutes, but you can overwrite it by adding a...
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AWS keyWatcher
We have seen multiple times that users accidentally expose their AWS access key and secret key on Internet, e.g. GitHub. This is a really dangerous thing, as whoever get that key can do whatever you...
View ArticleJira and Confluence Performance Monitoring Part Two
Continue with Jira and Confluence Performance Monitoring Part One, in this article I will explain a bit deeper how the Bot works which is most interesting part I think. First of all, you need to have a...
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