Showing posts from July, 2018

Build React Native App (4) - Redux, Jest, and NativeBase

From this blog, typescript feature will be added. There are couple of ways to implement static type checking like; flow from facebook, PropTypes and Typescript.Typescript is well integrated with Visual Studio Code and supports better linter, error messages, and intellisense.Reference siteGithub Sample Ex4Currnet versionD:\GitRepo\reactnative>npm --version 6.3.0 D:\GitRepo\reactnative>react-native --version react-native-cli: 2.0.1 react-native: n/a - not inside a React Native project directory D:\GitRepo\reactnative>yarn --version 1.9.4 Creating React Native App$ react-native init ex4 If you want to specify the version, add "--version 0.57.3" at the end.Add NativeBase to React Native$ npm install native-base --save ... + native-base@2.8.1 added 71 packages from 42 contributors, removed 50 packages, updated 829 packages and audited 34989 packages in 138.542s found 0 vulnerabilities $ $ yarn yarn install v1.9.4 warning package-lock.json found. Your project contains l…

ssh can't connect to remote due to REMOTE HOST IDENTIFICATION HAS CHANGED

SSH can't connect to remote: "WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!" After rebuilding the remote server, ssh can't make connection to remote server with following messages

λ ssh -o ServerAliveInterval=60 root@
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
Please contact your system administrator.
Add correct host key in /c/Users/alex.joh/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /c/Users/alex.joh/.ssh/known_hosts:13
ECDSA host key for has changed and you have requested strict checking.

Kong docker container exits with 132 error code without any message

Docker Container Exited (132) I was building entire Devops environment with ansible automation and suddenly Kong stack didn't start properly.

 The problem was that the Dev server was old Dell Server and it doesn't support "sse4_2" feature from CPU.

What is SSE Technology? SSE is a processor technology that enables single instruction multiple data. ... SSE is designed to replace MMX™ Technology. It expanded over the generations of Intel® Processors to include SSE2, SSE3/SSE3S, and SSE4. Each iteration has brought new instructions and increased performance.

Information from CPUInfo
 [root@dockerdv01 ~]# cat /proc/cpuinfo | grep sse4_
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc aperfmperf pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes hypervisor lahf_lm tsc_adjust dthe…