AKAI TSUKI

System development or Technical something

When we study java and spring boot and docker.

Docker Java

When we study java and spring boot and docker, please check.

https://blog.docker.com/2018/03/video-series-modernizing-java-apps-developers-part-1/

https://blog.docker.com/2018/03/video-series-modernizing-java-apps-developers-part-2/

https://blog.docker.com/2018/03/video-series-modernizing-java-apps-developers-part-3/

https://blog.docker.com/2018/04/video-series-modernizing-java-apps-developers-part-4/

https://training.play-with-docker.com/ops-landing/
-> Stage 1: The Basics

https://spring.io/guides/gs/spring-boot-docker/
Spring Boot with Docker

https://www.slideshare.net/masatoshitada7/spring-boot-jjug

check index infomation by REST API

Elasticsearch

infomation

# curl http://localhost:9200/customer?pretty
{
  "customer" : {
    "aliases" : { },
    "mappings" : { },
    "settings" : {
      "index" : {
        "creation_date" : "1514796397799",
        "number_of_shards" : "5",
        "number_of_replicas" : "1",
        "uuid" : "2bDYA53CQp6lvXxoHe_jAQ",
        "version" : {
          "created" : "5040399"
        },
        "provided_name" : "customer"
      }
    }
  }
}
#

settings

# curl http://localhost:9200/customer/_settings?pretty
{
  "customer" : {
    "settings" : {
      "index" : {
        "creation_date" : "1514796397799",
        "number_of_shards" : "5",
        "number_of_replicas" : "1",
        "uuid" : "2bDYA53CQp6lvXxoHe_jAQ",
        "version" : {
          "created" : "5040399"
        },
        "provided_name" : "customer"
      }
    }
  }
}
#

mappings

# curl http://localhost:9200/customer/_mappings?pretty
{
  "customer" : {
    "mappings" : { }
  }
}
#

alias

# curl http://localhost:9200/customer/_alias?pretty
{
  "customer" : {
    "aliases" : { }
  }
}
#

mappings and alias

# curl http://localhost:9200/customer/_mappings,_alias?pretty
{
  "customer" : {
    "mappings" : { },
    "aliases" : { }
  }
}
#

Install Prometheus on CentOS 7

Monitoring Prometheus

ref. prometheus-rpm/release - Packages - packagecloud.io | packagecloud

Setting yum repository

[root@cent7devops ~]# vi /etc/yum.repos.d/prometheus.repo
[root@cent7devops ~]# cat /etc/yum.repos.d/prometheus.repo
[prometheus]
name=prometheus
baseurl=https://packagecloud.io/prometheus-rpm/release/el/7/$basearch
repo_gpgcheck=1
enabled=1
gpgkey=https://packagecloud.io/prometheus-rpm/release/gpgkey
       https://raw.githubusercontent.com/lest/prometheus-rpm/master/RPM-GPG-KEY-prometheus-rpm
gpgcheck=1
sslverify=1
sslcacert=/etc/pki/tls/certs/ca-bundle.crt
metadata_expire=300
[root@cent7devops ~]#

install prometheus 2

[root@cent7devops ~]# yum install -y prometheus2.x86_64
*snip*
Installed:
  prometheus2.x86_64 0:2.0.0-2.el7.centos

Complete!
[root@cent7devops ~]#

install node exporter

[root@cent7devops ~]# yum install -y node_exporter.x86_64
*snip*
Installed:
  node_exporter.x86_64 0:0.15.1-1.el7.centos

Complete!
[root@cent7devops ~]#

firewall setting

[root@cent7devops ~]# firewall-cmd --zone=public --add-port=9090/tcp
success
[root@cent7devops ~]# firewall-cmd --zone=public --add-port=9090/tcp --permanent
success
[root@cent7devops ~]# firewall-cmd --reload
success
[root@cent7devops ~]#

[root@cent7devops ~]# firewall-cmd --list-all
public (active)
  target: default
  icmp-block-inversion: no
  interfaces: enp0s3
  sources:
  services: dhcpv6-client ssh
  ports: 9090/tcp
  protocols:
  masquerade: no
  forward-ports:
  source-ports:
  icmp-blocks:
  rich rules:

[root@cent7devops ~]#

start Prometheus

[root@cent7devops ~]# systemctl start prometheus

access to prometheus web

f:id:akai_tsuki:20171203184946p:plain

start Node exporter

[root@cent7devops ~]# systemctl start node_exporter

edit Prometheus config file

[root@cent7devops ~]# cp -p /etc/prometheus/prometheus.yml{,.org}
[root@cent7devops ~]# vi /etc/prometheus/prometheus.yml
[root@cent7devops ~]# diff /etc/prometheus/prometheus.yml.org /etc/prometheus/prometheus.yml
29c29
<       - targets: ['localhost:9090']
---
>       - targets: ['localhost:9090', 'localhost:9100']
[root@cent7devops ~]#

reload

[root@cent7devops ~]# systemctl reload prometheus

check Graph for node_memory_Active

f:id:akai_tsuki:20171203190029p:plain