Ansible is a simple automation language used for software provisioning, configuration management and application deployment. ad-hoc task-execution, and multinode orchestration. It’s a simple automation language that can easily be understood by everyone and there are no special skills required to…
Author: Arunlal
How to calculate MySQL max_connections
max_connections = (Available RAM – Global Buffers) / Thread Buffers For getting the available RAM in bytes. free -b total used free shared buff/cache available Mem: 8253255680 6625886208 172158976 931852288 1455210496 409915392 For getting the details about Global buffers, access…
AWS Kinesis
It’s the place where AWS pushes your streaming data to Kinesis. It loads and analyzes the streaming data for building custom applications for your business needs. Types: 1) Kinesis Streams : It’s the place to store the data by default.…
NAT Gateway vs NAT Instance
Private subnet in the VPC will not be able to directly communicate with the internet. While connecting your private subnet to internet Nat Gateway and Nat instance comes into the picture. NAT Gateway is highly available gateway as one NAT…
Amazon Route53
It has the ability to distributes traffic across different region. Resolves domain name to IP address. Distributes traffic based on latency, load balancer health etc…
Elastic Load Balancing
It distributes the traffic across availability zone. It provides single Host name endpoint for the users. ELB Route traffic to healthy instances is a major advantage of it. Load distubutes to ELB via Round robin mecahanis. ELB distributes HTTP traffic…
Vertical scaling vs Horizontal scaling
In case of Vertical scaling, it depends on the usage we scale the resources like CPU,memory by changing instance type from t2.micro to t3.large. In case of Horizontal scaling we add more instances as well as upgrade the instance type…
How to calculate MySQL thread_cache_size
This parameter sets the amount of thread for cache purposes. If client disconnects, his thread are kept in the cache. If the requests are less than the thread_cache_size then threads that are stored in cache will serve the requests. To…
Script for wordpress version with user information
Kindly download the following script and execute the script using the following command. [root@arunlal ~]# wget lintechops.com/wp-version.sh[root@arunlal ~]# sh wp-version.sh Output be like. abxxxcd ‘4.4.18’; abxxxdc ‘4.9.10’; abxxxfg ‘4.0.26’; abxxxtr ‘3.9.27’; acxxxje ‘4.0.26’; apxxxit ‘3.8.5’;
Command for finding disk usage of error_logs in the home directory
It’s really a headache while handling disk space issues with Linux server. Today I am sharing one of the easiest commands to sort out the size of unwanted logs that can be easily removed from the server to tackle the…