适用于Elasticbeanstalk的AWS CloudWatch日志

Question

From webapp, end-user will specify start time and end time for fetching logs (either in .zip format or to just display log in new tab). I want to use cloudwatch for logging of elasticbeanstalk. What are the available JAVA api's for doing this. like enabling cloudwatch log in elasticbeanstalk and creating log stream etc

Answer 1

Why do you want use java api? You can follow the below step to install & configure cloud-watch log in EB ENV.

1. You should add cloud-watch policy with your elastic beanstalk ec2 role.
2. Write config in .ebextension to install & configure the cloud-watch logs on EB based servers.

Example config for cloud-watch log installation & configuration:

packages:
  yum:
    awslogs: []

container_commands:
  01_get_awslogs_conf_file:
    command: "cp .ebextensions/awslogs.conf /etc/awslogs/awslogs.conf"
  03_restart_awslogs:
    command: "sudo service awslogs restart"
  04_start_awslogs_at_system_boot:
    command: "sudo chkconfig awslogs on"

3. Your awslogs.conf should be available in .ebextensions directory.

Example file of awslogs.conf

[general]
state_file = value
logging_config_file = value
use_gzip_http_content_encoding = [true | false]

[logstream1]
log_group_name = value
log_stream_name = value
datetime_format = value
time_zone = [LOCAL|UTC]
file = value
file_fingerprint_lines = integer | integer-integer
multi_line_start_pattern = regex | {datetime_format}
initial_position = [start_of_file | end_of_file]
encoding = [ascii|utf_8|..]
buffer_duration = integer
batch_count = integer
batch_size = integer

If you are not getting log under cloud-watch log on AWS console then check the agent log on your server. Agent default log path will be /var/log/awslogs.log

Hope, This will help you to setup cloud watch log on EB.