Install python3.6, pip3.6, pipenv on Ubuntu 14.04 LTS

Prerequisite OS: Ubuntu 14.04 LTS Processor: 64 Bit RAM: 2 GB 1. Install python3.6 From source Step 1.1: Compile $ wget https://www.python.org/ftp/python/3.6.3/Python-3.6.3.tgz $ tar -xvf Python-3.6.3.tgz $ cd Python-3.6.3 $ sudo ./configure --enable-optimizations $ sudo make install Step 1.2: Check $ python3.6 --version 2. Install pip3.6 Step 2.1: Download pip $ wget https://bootstrap.pypa.io/get-pip.py Step 2.2: Execute $ sudo python3.6 get-pip.py Step 2.3: If you Got below error Error zlib not available Traceback (most recent call last): File "get-pip.py", line 22711, in <module> main() File "get-pip.py", line 198, in main bootstrap(tmpdir=tmpdir) File "get-pip.py", line 82, in bootstrap from pip._internal.cli.main import main as pip_entry_point zipimport.ZipImportError: can't decompress data; zlib not available Step 2.3.1: Install zlib: Install with some other dependency $ sudo apt-get install -y make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev OR ...

April 2, 2020 · 2 min · 264 words · Ashish Tiwari

Covid19 Data Source for India & Global

Hi Guys, I am trying to listing all data source & endpoints for COVID19 - India as well as Global. It can contains offical or unofficial APIs. Anyone is working on any COVID19 project for India, Can use these sources. APIs 1. Github: amodm/api-covid19-in (India) Repo: https://github.com/amodm/api-covid19-in APIs available: Statewise Data StateWise StateWise History Medica Hospital Stats Bed Stats Contacts HelpLines Contacts Patient Tracing History Sources The source is both types of official & Unofficial. ...

March 27, 2020 · 2 min · 322 words · Ashish Tiwari

[SOLVED] Golang fatal error: concurrent map writes

The Problem: Suddenly got below errors which killed my daemon: fatal error: concurrent map writes goroutine 646 [running]: runtime.throw(0x75fd38, 0x15) /usr/local/go/src/runtime/panic.go:774 +0x72 fp=0xc000315e60 sp=0xc000315e30 pc=0x42ecf2 runtime.mapdelete_fast64(0x6f0800, 0xc00008ad50, 0x2b3e) goroutine 1 [sleep]: runtime.goparkunlock(...) /usr/local/go/src/runtime/proc.go:310 time.Sleep(0x12a05f200) /usr/local/go/src/runtime/time.go:105 +0x157 webhook/worker.Manager() goroutine 6 [IO wait]: internal/poll.runtime_pollWait(0x7fc308de6f08, 0x72, 0x0) /usr/local/go/src/runtime/netpoll.go:184 +0x55 internal/poll.(*pollDesc).wait(0xc000110018, 0x72, 0x0, 0x0, 0x75b00b) /usr/local/go/src/internal/poll/fd_poll_runtime.go:87 +0x45 internal/poll.(*pollDesc).waitRead(...) /usr/local/go/src/internal/poll/fd_poll_runtime.go:92 internal/poll.(*FD).Accept(0xc000110000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0) /usr/local/go/src/internal/poll/fd_unix.go:384 +0x1f8 net.(*netFD).accept(0xc000110000, 0xc000050d50, 0xc000046700, 0x7fc308e426d0) /usr/local/go/src/net/fd_unix.go:238 +0x42 net.(*TCPListener).accept(0xc000126000, 0xc000050d80, 0x40dd08, 0x30) /usr/local/go/src/net/tcpsock_posix.go:139 +0x32 net.(*TCPListener).Accept(0xc000126000, 0x72f560, 0xc0000f0180, 0x6f4f20, 0x9c00c0) /usr/local/go/src/net/tcpsock.go:261 +0x47 net/http.(*Server).Serve(0xc0000f4000, 0x7ccbe0, 0xc000126000, 0x0, 0x0) /usr/local/go/src/net/http/server.go:2896 +0x286 net/http.(*Server).ListenAndServe(0xc0000f4000, 0xc0000f4000, 0x8) /usr/local/go/src/net/http/server.go:2825 +0xb7 net/http.ListenAndServe(...) /usr/local/go/src/net/http/server.go:3080 webhook/handler.HandleRequest() Expected behaviour In starting for a few seconds it was working smoothly. ...

February 4, 2020 · 3 min · 434 words · Ashish Tiwari

Elasticsearch Exceptions & Challenges

Below are some challenges & exceptions faced while setting up Elasticsearch. I just shared my experience and learning. Please correct me, If you guys feel somewhere i got wrong OR You can contribute if you have any experiences . Will keep update this gist. Every use case having different solutions. You can try accordingly.

December 3, 2019 · 1 min · 54 words · Ashish Tiwari

How to reset 1-Click Installed WordPress on DigitalOcean?

The Requirement Need to install fresh wordpress with same version on wordpress droplet of digitalocean. The Problem My setup (wordpress droplet) was suddenly stop working. I started debugging. Debug Checked apache2 and mysql service: service mysql status service apache2 status Both services was active. Then I checked the apache2 processes with below command: $ ps -ef | grep apache2 | wc -l 151 Lots of apache child process has been forked. Which was not good. ...

December 3, 2019 · 3 min · 525 words · Ashish Tiwari

[Part 3] How to write custom prometheus exporter?

Introduction In PART-1 and PART-2, We have seen how prometheus works and how to setup Prometheus and exporters. We have readymade exporters available on the internet. But sometime there is situation where you need to store your own custom metrics on prometheus. In such case you have to write your own exporters which will exporters the data into Prometheus. There is two way to exporting the data on prometheus: 1. Exporting to a Pushgateway Here we metrics are getting the push to prometheus server. It not exposed over any URL or port. Internally it directly calls to Prometheus host and pushes the metrics to that. ...

November 29, 2019 · 3 min · 431 words · Ashish Tiwari

[Part 2] How to setup alertmanager and send alerts ?

Introduction In PART - 1, We have successfully setup Prometheus and exporters. In this part, we are going to setup alertmanager and will send our first alert. Alertmanager is software that is maintained by the prometheus and it is written in Go. It takes care of deduplicating, grouping, and routing them to the correct receiver integration such as email, PagerDuty, or OpsGenie. It also takes care of silencing and inhibition of alerts. ...

October 23, 2019 · 7 min · 1351 words · Ashish Tiwari

[Part 1] How To Setup Prometheus And Exporters For Alerts And Monitoring?

As a developer, many times you would have worried, whether your services are up and running or not. Not only that, sometimes as an infrastructure guy you might be also worried about your server’s health too. What is the current RAM or disk utilization? or whether they are going to be fully occupied which in turn can completely bring the system down. These are just the basics and in fact there are tons of more such things which need to be monitored and fixed in everyday’s life. ...

September 22, 2019 · 7 min · 1480 words · Ashish Tiwari