DevOps Classroom Notes – 02/Oct/2021

Logstash apache configurations

• Navigate to /etc/logstash/conf.d
• Create a new configuration file apache.conf with the following content

input
{
    beats 
    {
        port => 5044
    }
}
filter
{
    grok 
    {
        "match" => { "message" => "%{COMBINEDAPACHELOG}"}
    }
}
output 
{
    elasticsearch
    {
        index => "apache-%{+yyyy.MM.dd}"
        hosts => "172.31.28.161"
    }
    
}

• enable and start logstash service
• Now log in to system with apache installed and start beats service
• Now lets go to the kibana ui to search for elastic search indexes
• Lets create a sample script to create requests.

while true
do
    curl http://54.191.223.145
    curl http://54.191.223.145/test.hml
    sleep 10s
done

• Now follow the class room video for ui configurations done on kibana to create visualizations

Metric Beats

• Refer Here for the official docs
• Lets install metric beats on the apache server & forward metrics directly to elastic search
• Installation Refer Here
• Now lets change the configurations in /etc/metricbeat/metricbeat.yml
• Refer Here to load the kibana dashboards
• metricbeat.yml used in the class

###################### Metricbeat Configuration Example #######################

# This file is an example configuration file highlighting only the most common
# options. The metricbeat.reference.yml file from the same directory contains all the
# supported options with more comments. You can use it as a reference.
#
# You can find the full configuration reference here:
# https://www.elastic.co/guide/en/beats/metricbeat/index.html

# =========================== Modules configuration ============================

metricbeat.config.modules:
  # Glob pattern for configuration loading
  path: ${path.config}/modules.d/*.yml

  # Set to true to enable config reloading
  reload.enabled: false

  # Period on which files under path should be checked for changes
  #reload.period: 10s
  
#==========================  Modules configuration =============================
metricbeat.modules:

#-------------------------------- System Module --------------------------------
- module: system
  metricsets:
    - cpu             # CPU usage
    #- load            # CPU load averages
    - memory          # Memory usage
    - network         # Network IO
    - process         # Per process metrics
    - process_summary # Process summary
    - uptime          # System Uptime
    - socket_summary  # Socket summary
    - core           # Per CPU core usage
    - diskio         # Disk IO
    - filesystem     # File system usage for each mountpoint
    - fsstat         # File system summary metrics
    #- raid           # Raid
    #- socket         # Sockets and connection info (linux only)
    - service        # systemd service information
  enabled: true
  period: 10s
  processes: ['.*']
  # Configure the metric types that are included by these metricsets.
  cpu.metrics:  ["percentages","normalized_percentages"]  # The other available option is ticks.
  core.metrics: ["percentages"]  # The other available option is ticks.
#-------------------------------- Apache Module --------------------------------
- module: apache
  metricsets: ["status"]
  period: 10s
  enabled: true

  # Apache hosts
  hosts: ["http://172.31.7.212"]

# ======================= Elasticsearch template setting =======================

setup.template.settings:
  index.number_of_shards: 1
  index.codec: best_compression
  #_source.enabled: false


# ================================== General ===================================

# The name of the shipper that publishes the network data. It can be used to group
# all the transactions sent by a single shipper in the web interface.
#name:

# The tags of the shipper are included in their own field with each
# transaction published.
#tags: ["service-X", "web-tier"]

# Optional fields that you can specify to add additional information to the
# output.
#fields:
#  env: staging

# ================================= Dashboards =================================
# These settings control loading the sample dashboards to the Kibana index. Loading
# the dashboards is disabled by default and can be enabled either by setting the
# options here or by using the `setup` command.
#setup.dashboards.enabled: false

# The URL from where to download the dashboards archive. By default this URL
# has a value which is computed based on the Beat name and version. For released
# versions, this URL points to the dashboard archive on the artifacts.elastic.co
# website.
#setup.dashboards.url:

# =================================== Kibana ===================================

# Starting with Beats version 6.0.0, the dashboards are loaded via the Kibana API.
# This requires a Kibana endpoint configuration.
setup.kibana:

  # Kibana Host
  # Scheme and port can be left out and will be set to the default (http and 5601)
  # In case you specify and additional path, the scheme is required: http://localhost:5601/path
  # IPv6 addresses should always be defined as: https://[2001:db8::1]:5601
  host: "172.31.28.161:5601"

  # Kibana Space ID
  # ID of the Kibana Space into which the dashboards should be loaded. By default,
  # the Default Space will be used.
  #space.id:
setup.dashboards.enabled: true
# =============================== Elastic Cloud ================================

# These settings simplify using Metricbeat with the Elastic Cloud (https://cloud.elastic.co/).

# The cloud.id setting overwrites the `output.elasticsearch.hosts` and
# `setup.kibana.host` options.
# You can find the `cloud.id` in the Elastic Cloud web UI.
#cloud.id:

# The cloud.auth setting overwrites the `output.elasticsearch.username` and
# `output.elasticsearch.password` settings. The format is `<user>:<pass>`.
#cloud.auth:

# ================================== Outputs ===================================

# Configure what output to use when sending the data collected by the beat.

# ---------------------------- Elasticsearch Output ----------------------------
output.elasticsearch:
  # Array of hosts to connect to.
  hosts: ["172.31.28.161:9200"]

  # Protocol - either `http` (default) or `https`.
  #protocol: "https"

  # Authentication credentials - either API key or username/password.
  #api_key: "id:api_key"
  #username: "elastic"
  #password: "changeme"

# ------------------------------ Logstash Output -------------------------------
#output.logstash:
  # The Logstash hosts
  #hosts: ["localhost:5044"]

  # Optional SSL. By default is off.
  # List of root certificates for HTTPS server verifications
  #ssl.certificate_authorities: ["/etc/pki/root/ca.pem"]

  # Certificate for SSL client authentication
  #ssl.certificate: "/etc/pki/client/cert.pem"

  # Client Certificate Key
  #ssl.key: "/etc/pki/client/cert.key"

# ================================= Processors =================================

# Configure processors to enhance or manipulate events generated by the beat.

processors:
  - add_host_metadata: ~
  - add_cloud_metadata: ~
  - add_docker_metadata: ~
  - add_kubernetes_metadata: ~


# ================================== Logging ===================================

# Sets log level. The default log level is info.
# Available log levels are: error, warning, info, debug
#logging.level: debug

# At debug level, you can selectively enable logging only for some components.
# To enable all selectors use ["*"]. Examples of other selectors are "beat",
# "publisher", "service".
#logging.selectors: ["*"]

# ============================= X-Pack Monitoring ==============================
# Metricbeat can export internal metrics to a central Elasticsearch monitoring
# cluster.  This requires xpack monitoring to be enabled in Elasticsearch.  The
# reporting is disabled by default.

# Set to true to enable the monitoring reporter.
#monitoring.enabled: false

# Sets the UUID of the Elasticsearch cluster under which monitoring data for this
# Metricbeat instance will appear in the Stack Monitoring UI. If output.elasticsearch
# is enabled, the UUID is derived from the Elasticsearch cluster referenced by output.elasticsearch.
#monitoring.cluster_uuid:

# Uncomment to send the metrics to Elasticsearch. Most settings from the
# Elasticsearch output are accepted here as well.
# Note that the settings should point to your Elasticsearch *monitoring* cluster.
# Any setting that is not set is automatically inherited from the Elasticsearch
# output configuration, so if you have the Elasticsearch output configured such
# that it is pointing to your Elasticsearch monitoring cluster, you can simply
# uncomment the following line.
#monitoring.elasticsearch:

# ============================== Instrumentation ===============================

# Instrumentation support for the metricbeat.
#instrumentation:
    # Set to true to enable instrumentation of metricbeat.
    #enabled: false

    # Environment in which metricbeat is running on (eg: staging, production, etc.)
    #environment: ""

    # APM Server hosts to report instrumentation results to.
    #hosts:
    #  - http://localhost:8200

    # API Key for the APM Server(s).
    # If api_key is set then secret_token will be ignored.
    #api_key:

    # Secret token for the APM Server(s).
    #secret_token:


# ================================= Migration ==================================

# This allows to enable 6.7 migration aliases
#migration.6_to_7.enabled: true

Packet Beat

• This can be used to monitor the incoming and outgoing network packets from your system Refer Here

Other Beats:

• Heartbeat: Refer Here
• Winlogbeat
• Journalbeat