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Redis user permissions (ACL) and python connection

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 Recently, I was working on setting up a redis cluster along with separate users for readwrite and readonly. I setup the readonly user using the below privileges (ACLs):   user redisreadonly on >mySuperSecretPassword ~* resetchannels -@all +@read +ping +asking   Once this is setup, I wrote a simple program in python to connect to the redis cluster using the readonly credentials and print the number of keys.   #!/usr/bin/env python3 """ pip3 install redis """ from redis.cluster import RedisCluster, ClusterNode # ─────── Cluster connection ─────── startup_nodes = [ ClusterNode("redis_host_1", 6379), ClusterNode("redis_host_2", 6379), ClusterNode("redis_host_3", 6379) ] rc = RedisCluster(startup_nodes=startup_nodes,decode_responses=True,username='redisreadonly',password='mySuperSecretPassw...
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Pre-requisites to "Convert to Multi-org"

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Many a time, DBAs are entrusted with the task of "convert to Multi-org" as soon as an Apps instance is installed. Though, the DBAs perform this task blindly, there is a lot (according to me) of setup work that needs to be completed, before "Convert to Multi-org" can succeed. I have tried, in this blog entry, to list out these tasks. Please go through the references mentioned below for explanation about the different terms/terminology like Legal Entity, Operating Unit etc. Step I - Define Work Location Set the profile option HR:User Type for a given responsibility (that we are going to use to define the work location say Global HRMS Manager) to HR User. Global HRMS Manager (responsibility) --> Work Structures --> Location Provide: 1. Location Name 2. Location Address Step II - Define Business group Set the profile option HR:User Type for a given responsibility (that we are going to use to define the work location say Global HRMS Manager) to HR User. Global HRMS...
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EXCEPTION_ACCESS_VIOLATION in Jinitiator and IE crashes

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The Environment Apps Version : 11.5.10.2 Jinitiator Version : 1.3.1.26 Internet Explorer Version : 6 The Issue One of our end users was receiving a very strange error while using jinitiator. The Internet explorer window would crash (close by itself) after creating a file HS_ERR_PID .log on the desktop, where #### stands for the Process ID of the f60webmx session. This error is intermittent and not easily reproducible. Moreover, the user would have to redo his/her work and hence this issue was turning out to be very vexing indeed. The error log is as below: An unexpected exception has been detected in native code outside the VM. Unexpected Signal : EXCEPTION_ACCESS_VIOLATION occurred at PC=0x6D043D1AFunction name=Java_sun_java2d_loops_DefaultComponent_IntIsomorphicCopy Library=C:\Program Files\Oracle\JInitiator 1.3.1.26\bin\awt.dll Current Java thread: at sun.java2d.loops.DefaultComponent.IntIsomorphicCopy(Native Method) at sun.java2d.loops.IntRgbToIntRgb.OpaqueBlit(Unknown Source) at ...
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Version of mod_security with EBS 11.5.10.2

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Though it was a bit tough to find out the version of Mod_security that is shipped with E-Business Suite 11.5.10.2, I finally managed to do it, thanks to Metalink Fora! The version that comes with eBS 11.5.10.2 is 1.8.4 . Below is how you find out the version of mod_security shipped with your version of eBS. $ strings $IAS_ORACLE_HOME/Apache/Apache/libexec/mod_security.so | grep mod_security/
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Read a file and extract specific lines using Native Ansible Modules

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I never realised that reading a file on a remote host and extracting specific lines from that file would be such an arduous task. As part of one of my projects, I had this requirement and without using "cat" or other shell utilities, it was quite cumbersome to read and extract the information that I was looking for. Read on to find out how it can be done using Ansible native commands. Note that I have suggested only one out of a possible many methods. Feel free to explore yourself and update the comments here! REMOTE FILE CONTENTS $ cat /tmp/IP_and_hostnames.txt $ cat /tmp/IP_and_hostnames.txt 192.168.230.165:example-host-1.example.com 192.168.230.166:example-host-2.example.com 192.168.230.167:example-host-3.example.com 192.168.230.175:example-host-1-vip.example.com 192.168.230.176:example-host-2-vip.example.com 192.168.230.177:example-host-3-vip.example.com 192.168.230.185:example-host-1-priv.example.com 192.168.230.186:e...
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