= DevOps Sesión 14 (2022-03-28) Ansible + ELK
== Documentación relacionada
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  * ./5-Topic 705 Service Operations
  * ./5-Topic 705 Service Operations/MV-ELK formacion vmwareplayer.txt
  * ./5-Topic 705 Service Operations/Clase Monitorizacion.txt
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== inventario dinámico Ansible
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  * ./4-Topic 704 Configuration Management/ec2_ansible-aws/Configurar inventario dinámico Ansible AWS.pdf
  * ./4-Topic 704 Configuration Management/ec2_ansible-aws/README.md
  * [[https://blog.mauriciovillagran.uy/2019/AnsibleDynamicInventory/]]
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  * ec2.py, ec2.ini (posiblemente deprecado, mejor usar el método del PDF)

== Ansible + ESXi
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  * Material Curso Ansible/Ansible-Vmware-vSphere
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== instalación VMWare Player + ELK
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  * ./5-Topic 705 Service Operations/MV-ELK formacion vmwareplayer.txt
  * ./5-Topic 705 Service Operations/Material Curso ELK/1-Laboratorios ELK.pdf
  * ./5-Topic 705 Service Operations/Presentacion Herramientas para el manejo de logs.pdf
  * [[https://drive.google.com/drive/folders/1RdPXZfIRfjoOghbFYpw9ESlsNBpYacjQ]]
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  * root:000000
  * ''ip a'' -> (ens37) 172.16.132.128

== Herramientas manejo logs
  * kubernetes: prometheus + grafana
    * 1-Laboratorios ELK.pdf, pag. 90
    * 2-Despliegue de Aplicaciones Kubernetes/kubernetes-Helm3-API-Metrics-Server
      * servidor de métricas
      * helm: instalación software en k8s tipo apt

== ELK
  * ./5-Topic 705 Service Operations/Presentacion Herramientas para el manejo de logs.pdf, pág 11
  * ElasticSearch: motor BDD clave=valor
    * puertos 9200,9300
  * Logstash: pre-procesador de logs
    * puerto: 5044
  * Beats: clientes ligeros que capturan los datos para ElasticSearch o Logstash
    * winlogbeats (pago?)
  * Kibana: intérprete gráfico de los datos de ElasticSearch
    * puerto: 5601

=== instalación
<code bash>
yum install git -y
cd /
git clone https://github.com/agarciafer/elk.git
cd /root
rpm -ivh metricbeat-6.7.1-x86_64.rpm
rpm -ivh logstash-6.7.1.rpm
cp /elk/example.conf /etc/logstash
/usr/share/logstash/bin/logstash -f /etc/logstash/example.conf
rpm -ivh elasticsearch-6.7.1.rpm
rpm -ivh kibana-6.7.1-x86_64.rpm
</code>
<code yaml ; /etc/elasticsearch/elasticsearch.yml>
   57 network.host: [ "localhost", "192.168.1.150" ]
</code>
<code bash>
systemctl start elasticsearch.service
systemctl status elasticsearch.service
systemctl enable elasticsearch.service

netstat -putan | grep -w 9200
netstat -putan | grep -w 9300
</code>

<code yaml ; /etc/kibana/kibana.yml>
 7 server.host: "192.168.93.128" # dirección MV
28 elasticsearch.hosts: ["http://localhost:9200"]
</code>
<code bash>
systemctl start kibana.service
systemctl status kibana.service
systemctl enable kibana.service

netstat -putan | grep -w 5601
</code>
  * [[http://192.168.93.128:5601/]]

== beats
  * 1-Laboratorios ELK.pdf, pag. 20
  * <code yaml ; /etc/metricbeat/metricbeat.yml>
49 setup.dashboards.enabled: true
67   host: "192.168.93.128:5601"
144 xpack.monitoring.enabled: true
151 xpack.monitoring.elasticsearch:
</code>
  * **/etc/metricbeat/modules.d**
  * <code bash>metricbeat modules list
systemctl start metricbeat.service
systemctl status metricbeat.service
systemctl enable metricbeat.service
tail -f /var/log/elasticsearch/elasticsearch.log # comprobar que metricbeat está enviando datos
metricbeat test config -c /etc/metricbeat/metricbeat.yml
</code>
  * En Kibana, activamos **Monitoring**
  * vamos **Dashboard** y buscamos **[Metricbeat System] Overview**

=== habilitar módulo (docker)
  * [[https://www.elastic.co/guide/en/beats/metricbeat/6.7/metricbeat-module-docker.html]]
  * <code bash>docker run -dtiP --name web-1 httpd
docker run -dtiP --name web-2 nginx
</code>
  * <code bash>metricbeat modules enable docker</code>
  * <code yaml ; /etc/metricbeat/modules.d/docker.yml># Module: docker
# Docs: https://www.elastic.co/guide/en/beats/metricbeat/6.7/metricbeat-module-docker.html

- module: docker
  metricsets:
    - container
    - cpu
    - diskio
    - event
    - healthcheck
    - info
    - memory
    - network
  period: 10s
  hosts: ["unix:///var/run/docker.sock"]

  # If set to true, replace dots in labels with `_`.
  labels.dedot: false

  # To connect to Docker over TLS you must specify a client and CA certificate.
  #ssl:
    #certificate_authority: "/etc/pki/root/ca.pem"
    #certificate:           "/etc/pki/client/cert.pem"
    #key:                   "/etc/pki/client/cert.key"
</code>
  * En Kibana, vamos a **Dashboard** y buscamos **[Metricbeat Docker] Overview**



== TODO
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