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Build up a td-agent server on centos 6.5

      2017/03/25

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Abstract

Hello everyone, It’s candle.
In this time, we build up a td-agent server on the centos 6.5.

Td-agent is service based on fluentd.
It daemonizes fluentd and creates a GUI.


Premise

You have Centos 6.5 server.
I use Centos 6.5 on the vagrant for explanation.

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Install basic libraries

You install libraries for td-agent server.

sudo yum install -y git openssl openssl-devel readline readline-devel

This is the minimum required library.

Install rbenv

Although to install ruby may be installed from yum, I recommend that you install from rbenv, because you can change the version of ruby against various situations such as changing version of fluentd and other ruby applications.

Bring the rbenv from the repository with the following command.

sudo git clone git://github.com/sstephenson/rbenv.git /usr/local/rbenv

Change the permissions of rbenv to vagrant user.

sudo chown -R vagrant /usr/local/rbenv

“/usr/local/rbenv” is not set to the directory of the executable file like /bin or /usr/bin.
If you do not set the path, you can not run rbenv command globally even if rbenv is installed.
Let’s do it.

Open the /etc/profile and write this.

export RBENV_ROOT=/usr/local/rbenv
export PATH="${RBENV_ROOT}/bin:${PATH}"
eval "$(rbenv init -)"

You can not install ruby with rbenv only.
You need ruby-build plugin for install ruby.
Run this command.

git clone git://github.com/sstephenson/ruby-build.git /usr/local/rbenv/plugins/ruby-build

After installation, reload /etc/profile once and rehash rbenv.

source /etc/profile
rbenv rehash


Install ruby

I don’t know about what kind of ruby version is appropriate to td-agent or fluentd, anyway I think that it will work even at the latest.

rbenv install 2.3.3

Declare to use 2.3.3 for centos as a whole, and refresh.

rbenv global 2.3.3
rbenv rehash

OK, it finish.


Install td-agent

Next, let’s install td-agent.
Install it with the following command according to the official site.

curl -L https://toolbelt.treasuredata.com/sh/install-redhat-td-agent2.sh | sh

If you don’t catch any error, it is success.

Launching of td-agent

The command which is launching of td-agent is this.

sudo service td-agent start

We set up the td-agent to launch automaticaly when starting up the server.

sudo chkconfig td-agent on

Set up td-agent-ui

We will use the system which is management to “plugin” and “log” in the web browser called td-agent-ui.

If you are using Centos 6.5 on the vagrant, open port 9292 in the vagrant setting.
Exit from the server and stop the vagrant.

vagrant halt

Open the Vagrantfile and write this to open the port.
Also allocate the IP address.

  config.vm.network :forwarded_port, guest: 9292, host: 9292
  config.vm.network "private_network", ip: "192.168.33.10"

Save the file, and launch the vagrant.

vagrant up

Launching of td-agent-ui

It is easy to launch td-agent-ui.

sudo td-agent-ui start

I caught some warning, but It is probably ok.

Access to http://192.168.33.10:9292 with Mac browser.

Account name is “admin”, password is “changeme”.

After login, the setup page will appear.
You can choose fluentd or td-agent. Let’s choose td-agent.

Set up is over.

Conclusion

I will write how to use it etc in another article.

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