Chef Server
All logs generated by the Chef server can be found in /var/log/opscode. Each service enabled on the system also has a sub-directory in which service-specific logs are located, typically found in /var/log/opscode/service_name.

The Chef server has built-in support for easily tailing the logs that are generated. To view all the logs being generated on the Chef server, enter the following command:
> chef-server-ctl tail

To view logs for a specific service:
> chef-server-ctl tail SERVICENAME
where SERVICENAME should be replaced with name of the service for which log files will be viewed. SERVICENAME represents the name of any service that is listed after running the “> chef-server-ctl service-list” subcommand.

Another way to view log files is to use the system utility tail:
> tail -50f /var/log/chef-server/opscode-chef/current
> tail -50f /var/log/opscode/opscode-chef/current

Supervisor Logs
Supervisor logs are created and managed directly by the service supervisor, and are automatically rotated when a the current log file reaches 1,000,000 bytes. 10 log files are kept. The latest supervisor log is always located in /var/log/chef-server/service_name/current and rotated logs have a filename starting with @ followed by a precise tai64n timestamp based on when the file was rotated.

Supervisor logs are available for the following services:

1. bifrost
2. bookshelf
3. nginx
4. opscode-erchef
5. opscode-expander
6. opscode-expander-reindexer
7. opscode-solr4
8. postgresql
9. rabbitmq
10. redis

nginx

The nginx service creates both supervisor and administrator logs. The administrator logs contain both access and error logs for each virtual host utilized by the Chef server. Each of the following logs require external log rotation.

To follow the logs for the service:

 $ chef-server-ctl tail nginx

Chef Client

Client.rb3 file might help you. Default value of log_location is STDOUT. You can give /path/to/log_location in place of this. You can locate this client.rb file in C:\chef\client.rb or /etc/chef/client.rb directories.

Use the verbose logging that is built into the chef-client:
-l LEVEL, –log_level LEVEL
The level of logging to be stored in a log file.
-L LOGLOCATION, –logfile c
The location of the log file. This is recommended when starting any executable as a daemon. Default value: STDOUT.

Knife
Use the verbose logging that is built into knife:
-V, –verbose
Set for more verbose outputs. Use -VV for maximum verbosity.

chef-solo
-l LEVEL, –log_level LEVEL
The level of logging to be stored in a log file.

The Chef file and folder locations are different on Linux and Windows machines. This article explains the purpose of each file and the location.

Summary

When you test your cookbook in Test Kitchen

The .kitchen.yml file contains the username to execute the Chef cookbook. It is specified under platforms:, transport:, username:

Use that value in place of USER-NAME-FROM-KITCHEN-YML below.

 
Cookbook location

When the Chef recipes are executed, all cookbooks are stored on the node. You can examine the code to make sure your latest changes are reflected on the machine.

The log of the Chef client run

The output of the Chef cookbook execution is in the chef.log or chef-client.log file

On Windows

The log of the first Chef Client run and subsequent runs are stored in different log files. After the initial Chef Client run, the rest of the log entries are collected in the second file.

Stacktrace

Chef saves information on the hard drive when scripts are executed. If there is a failure, the stack trace of the last error is saved in the chef-stacktrace.out file.

Ohai output

All the information that Ohai collects on the instance, is saved in the failed-run-data.jsonfile, even if there is no error. It is a great resource to get the server specific values.

Reference

https://docs.chef.io/server_logs.html
https://docs.chef.io/debug.html

The post Logging in Chef Explained appeared first on scmGalaxy.

1. Write a cookbook using you can install apache http server in CentOs and Ubuntu, enable the services and start the service.
2. Write a recipe using template resources to create a file, but only if an attribute has a specific value.
   1. Write a recipe to create a file using a string, but not if “/etc/passwd” exists?
3. Write a cookbook to unzip a file, and then move a files from one location to another using batch, bash chef resources?
4. Create a role and assign any two cookbooks to role and setup a 2 nodes assigned to role and conerse the role.
5. Write a cookbook using install version of latest tomcat and deploy jenkins.war files into war.
6. Write a 4 cookbooks php, mysql, apache and webapp respectively and map a dependency between them and install a sample web application.
7. Write a cookbook to install git, wget, zip in RHEL and Ubuntu.
8. Write a cookbook in which create a file using a string, but only if “/etc/passwd” exists
9. Write a coobook to run a batch file that unzips and then moves files from one location to another.

The post Write 10 Chef Cookbooks to test your chef programming skills appeared first on scmGalaxy.

1. Write a cookbook using you can install apache http server in CentOs and Ubuntu, enable the services and start the service.

2. Write a recipe using template resources to create a file, but only if an attribute has a specific value.

3. Write a recipe to create a file using a string, but not if “/etc/passwd” exists?

4. Write a cookbook to unzip a file, and then move a files from one location to another using batch, bash chef resources?

5. Create a role and assign any two cookbooks to role and setup a 2 nodes assigned to role and conerse the role.

6. Write a cookbook using install version of latest tomcat and deploy jenkins.war files into war.

7. Write a 4 cookbooks php, mysql, apache and webapp respectively and map a dependency between them and install a sample web application.

8. Write a cookbook to install git, wget, zip in RHEL and Ubuntu.

9. Write a cookbook in which create a file using a string, but only if “/etc/passwd” exists

10. Write a coobook to run a batch file that unzips and then moves files from one location to another.

The post Write 10 Chef Cookbooks to test your chef programming skills appeared first on scmGalaxy.