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…

Installing Icinga 2.4.1, Graylog 1.2.2, and Cacti 0.8.8 on Ubuntu 14.04

Installing Icinga 2.4.1, Graylog 1.2.2, and Cacti 0.8.8

Date: Dec 7, 2015


Before investing to commercial monitoring software, I decided to use open source product and final choice is Icinga for monitoring, Graylog for log collection, and Cacti for graph. The MySQL is the choice because of the Cacti. The Cacti doesn’t support the Postgresql.
- Ubuntu: 14.04
- Icinga: 2.4.1
- Icinga Web: 2.1.0
- Graylog Server: 1.2.2
- Graylog web: 1.2.2
- Java: 7.x
- MongoDB: 2.6.11
- ElasticSearch: 1.7
- Cacti: 0.8.8

Useful command

Checking contents in the package

Using dpkg

alex@monitoring:~$ sudo dpkg -l icinga2
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
ii icinga2 2.4.1-1~ppa1 amd64 host and network monitoring syste

using apt-file

  • sudo apt-get install apt-file
  • sudo apt-file update
    alex@monitoring:~$ apt-file list icinga-idoutils
    icinga-idoutils: /etc/icinga/idomod.cfg
    icinga-idoutils: /etc/icinga/objects/ido2db_check_proc.cfg
    icinga-idoutils: /etc/init.d/ido2db
    icinga-idoutils: /usr/lib/icinga/
    icinga-idoutils: /usr/sbin/ido2db
    icinga-idoutils: /usr/sbin/log2ido
    icinga-idoutils: /usr/share/dbconfig-common/data/icinga-idoutils/install-dbadmin/pgsql
    icinga-idoutils: /usr/share/dbconfig-common/data/icinga-idoutils/install/mysql
    icinga-idoutils: /usr/share/dbconfig-common/data/icinga-idoutils/install/pgsql

Installing Icinga & Web

Installing Icinga Server 2.4.1

  • sudo apt-get install mysql-server mysql-client
    During installation, the root password will be entered.
  • sudo add-apt-repository ppa:formorer/icinga
  • sudo apt-get update
  • sudo apt-get install icinga2
  • sudo apt-get install icinga2-ido-mysql
    Install with dbconfig-common: No
    Enable ido-mysql feature: Yes

Creating a user for Icinga Database

  • sudo mysql -u root -p
  • mysql> CREATE DATABASE icinga;
  • mysql> GRANT SELECT, INSERT, UPDATE, DELETE, DROP, CREATE VIEW, INDEX, EXECUTE ON icinga.* TO ‘icinga’@’localhost’ IDENTIFIED BY ‘PassowordForIcingaUser’;
    For this case, I used icinga1234 for the password.

Enabling icinga2 feature

  • sudo icinga2 feature enable livestatus
  • sudo icinga2 feature enable gelf
  • sudo icinga2 feature enable ido-mysql
  • sudo icinga2 feature enable command
  • sudo icinga2 feature enable perfdata
  • sudo service icinga2 restart
To see the available list, run “sudo icinga2 feature list”
alex@monitoring:~$ sudo icinga2 feature list
Disabled features: api compatlog debuglog graphite icingastatus opentsdb statusdata syslog
Enabled features: checker command gelf livestatus mainlog notification perfdata

Installing Icinga-idoutils

  • sudo apt-get install icinga-idoutils
During installation, following questions will be needed to answer
  • setup SMTP setting for the email notification from Icinga
  • Use external command: Yes
  • Configure database for icinga-idioutils with dbconfig-common?: No
Importing IDODB data
  • sudo mysql –u root –p
  • mysql> connect icinga;
  • mysql> source /usr/share/dbconfig-common/data/icinga-idoutils/install/mysql;

Installing Icingaweb2

  • sudo wget -O - | sudo apt-key add -
  • sudo add-apt-repository ‘deb icinga-trusty main’
  • sudo apt-get update
  • sudo apt-get install icingaweb2
  • sudo icingacli setup token create
    alex@monitoring:~$ sudo icingacli setup token create
    The newly generated setup token is: fc405061b2687856
  • sudo apt-get install php5-json php5-gd php5-imagick php5-mysql php5-intl
  • Updating timezone from /etc/php5/apache2/php.ini
  • sudo service apache2 restart
  • Update ido-mysql.conf
  • sudo vi /etc/icinga2/features-available/ido-mysql.conf
    user: icinga, password: icinga1234, host:”localhost”, database:”icinga”

Installation from web setup

  • go to “http://localhost/icingaweb2
  • Enter token
  • From Modules, choose options
  • Make sure that all color is green except modules related to Postgresql
  • Authentication: Choose Database
  • Database Resource
    DBName: icingaweb, User: icinga, password: icinga1234
  • Database Setup
    Username: root, Password: root password for DB
  • Authentication Backend
    Backend Name: icingaweb2
  • Administration
    username: alex, password: alex
  • Application Configuration
    Leave as default
  • Check information and Click next
  • Monitoring Backend
    backend name: icinga, type: IDO
  • If you have error message from /var/log/icinga2/icinga2.log; “[2015-12-07 17:15:50 -0700] critical/IdoMysqlConnection: Schema version ‘1.13.0’ does not match the required version ‘1.14.0’ (or newer)! Please check the upgrade documentation.”
    mysql -u root -p
    Updating schema to latest version
    mysql> connect icinga;
    mysql> source /usr/share/icinga2-ido-mysql/schema/upgrade/2.4.0.sql
    restart icinga2 service
  • Command Transport
    Transport Name: icinga2, type: local command file, cmd: /var/run/icinga2/cmd/icinga2.cmd
Completed the icingaweb2 setup

Installing Graylog

Installing Java

  • sudo add-apt-repository ppa:webupd8team/java
  • sudo apt-get update
  • sudo apt-get install oracle-java7-installer

Installing MongoDB

Installing the MongoDB from distribution version
  • sudo apt-get install mongodb
Install latest version

Installing ElasticSearch 1.7

Updating configuration file
  • sudo vi /etc/elasticsearch/elasticsearch.yml graylog2
    At the end of the configuration file, add a line to disable dynamic script
    script.disable_dynamic: true
  • sudo service elasticsearch restart
Checking elasticsearch installation
  • curl -X GET http://localhost:9200
    alex@monitoring:~$ curl -X GET http://localhost:9200
    “status” : 200,
    “name” : “Dionysus”,
    “cluster_name” : “graylog2”,
    “version” : {
    “number” : “1.7.2”,
    “build_hash” : “e43676b1385b8125d647f593f7202acbd816e8ec”,
    “build_timestamp” : “2015-09-14T09:49:53Z”,
    “build_snapshot” : false,
    “lucene_version” : “4.10.4”
    “tagline” : “You Know, for Search”
Optional: Use the following command to check the Elasticsearch cluster health, you must get a cluster status as “green” for graylog to work.
  • curl -X GET ‘http://localhost:9200/_cluster/health?pretty=true
    “cluster_name” : “graylog2”,
    “status” : “green”,
    “timed_out” : false,
    “number_of_nodes” : 1,
    “number_of_data_nodes” : 1,
    “active_primary_shards” : 0,
    “active_shards” : 0,
    “relocating_shards” : 0,
    “initializing_shards” : 0,
    “unassigned_shards” : 0,
    “delayed_unassigned_shards” : 0,
    “number_of_pending_tasks” : 0,
    “number_of_in_flight_fetch” : 0

Installing graylog-server

  • sudo apt-get install pwgen
    Adding graylog repository for the version 1.2.x.
  • sudo wget
  • sudo dpkg -i graylog-1.2-repository-ubuntu14.04_latest.deb
  • sudo apt-get update
  • sudo apt-get install apt-transport-https
  • sudo apt-get install graylog-server graylog-web
  • SECRET=$(pwgen -s 96 1)
  • sudo -E sed -i -e ‘s/password_secret =.*/password_secret = ‘$SECRET’/’ /etc/graylog/server/server.conf
    Checking the value
  • grep password_secret /etc/graylog/server/server.conf
Adding password for the admin
  • PASSWORD=$(echo -n gray1234 | shasum -a 256 | awk '{print $1}')
  • sudo -E sed -i -e ‘s/root_password_sha2 =.*/root_password_sha2 = ‘$PASSWORD’/’ /etc/graylog/server/server.conf
    Checking the value
  • grep root_password_sha2 /etc/graylog/server/server.conf
  • sudo -E sed -i -e ‘s/^#rest_transport_uri =.*/rest_transport_uri = http:\/\/\//’ /etc/graylog/server/server.conf
  • grep rest_transport_uri /etc/graylog/server/server.conf
  • sudo vi /etc/graylog/server/server.conf
  • sudo -E sed -i -e ‘s/^#elasticsearch_discovery_zen_ping_unicast_hosts =.*/elasticsearch_discovery_zen_ping_unicast_hosts = ‘’/’ /etc/graylog/server/server.conf
  • grep elasticsearch_discovery_zen_ping_unicast_hosts
Updating /etc/graylog/web/web/conf
  • SECRET=$(pwgen -s 96 1)
  • sudo -E sed -i -e ‘s/application.secret =”“/application.secret =”’$SECRET’”/’ /etc/graylog/web/web.conf
  • grep secret /etc/graylog/web/web.conf
  • sudo -E sed -i -e ‘s/graylog2-server.uris=”“/graylog2-server.uris=”http:\/\/\/”/’ /etc/graylog/web/web.conf
  • grep graylog2-server /etc/graylog/web/web.conf
Restarting Server
  • sudo service graylog-server restart
  • sudo service graylog-web restart
To login the graylog web site, must login with the server ip address.

Installing Cacti

  • sudo apt-get install cacti-spine
    Check the database credential from /etc/cacti/cacti-spine.conf
    Creating database
    mysql -u root -p
    mysql> create database cacti;
    mysql> connect cacti;
    mysql> source /usr/share/doc/cacti/cacti.sql
    mysql> GRANT ALL ON cacti.* TO cacti@localhost IDENTIFIED BY ‘cacti1234’;
Update cacti database connection setting
  • sudo vi /etc/cacti/spine.conf
    DB_Host localhost
    DB_Database cacti
    DB_User cacti
    DB_Pass cacti1234
Update cacti database connection from /usr/share/cacti/site/include/config.php
  • sudo vi /usr/share/cacti/site/include/config.php
    $database_type = “mysql”;
    $database_default = “cacti”;
    $database_hostname = “localhost”;
    $database_username = “cacti”;
    $database_password = “cacti1234”;
    $database_port = “”;
    $database_ssl = false;
Default login/passwrd: admin/admin


I believe that all of this process can be automated from the shell script. All of this process can be automated by one command, it will be great. Enjoy the open source monitoring tool.
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