How to clear Docker container logs
Each Docker container has its on separate log file. This article explains the command to clear the Docker container logs
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AWS
How to connect to AWS Redis cluster
We can use redis-cli utility to connect to a Redis cluster. First of all we need to install this tool
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How to login to Docker container
We can use "docker exec" command to attach shell to the running container. Here we need to replace containerid with
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How to find files using Ansible
We can use Ansible find module to find-out files. Sample playbook snippet is given below. Here the first part searching
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How to add text to the end of each line in Linux
We can use sed utility to add text to the end of each line. Here '$' matches the end of
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How to execute local script in remote server using Ansible
To run local script in remote server we can use the Ansible modules copy and shell. Sample yaml snippet is
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How to add text to the starting of each line in Linux
We can use sed command to add text to the starting of each line. Here we need to repace "text"
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How to import variable from another file in Python
Python have a simple way to load variables from another file. First of all put the variables to a file.
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How to find Kafka port number and Zookeeper port number
Kafka port number can be get from the configuration file 'server.properties'. Defult localtion of the configuration file is $(confluent_home)/etc/kafka/server.properties. Also
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PHP Error: Attempted to call function "idn_to_ascii" from the global namespace.
Attempted to call function "idn_to_ascii" from the global namespace. This error is due to the absence of the php module
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How to remove untagged images from docker
Untagged images are not in use and we can simply remove them to free up the disk space. This command
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