supervisorってものがよくわからないので、とりあえず試してみる。 良い感じにデーモン化してくれるみたいだけど、見えてこない。goのファイルを扱います。
vagrantで試してみる。
vagrantを立ち上げる
vagrantfile
centos6.7を使います。boxがなければインストールしましょう。
# -*- mode: ruby -*-
# vi: set ft=ruby :
# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
Vagrant.configure("2") do |config|
# The most common configuration options are documented and commented below.
# For a complete reference, please see the online documentation at
# https://docs.vagrantup.com.
# Every Vagrant development environment requires a box. You can search for
# boxes at https://vagrantcloud.com/search.
config.vm.box = "centos6.7"
# Disable automatic box update checking. If you disable this, then
# boxes will only be checked for updates when the user runs
# `vagrant box outdated`. This is not recommended.
config.vm.box_check_update = false
# Create a forwarded port mapping which allows access to a specific port
# within the machine from a port on the host machine. In the example below,
# accessing "localhost:8080" will access port 80 on the guest machine.
# NOTE: This will enable public access to the opened port
# config.vm.network "forwarded_port", guest: 80, host: 8080
# Create a forwarded port mapping which allows access to a specific port
# within the machine from a port on the host machine and only allow access
# via 127.0.0.1 to disable public access
config.vm.network "forwarded_port", guest: 80, host: 8080, host_ip: "127.0.0.1"
# Create a private network, which allows host-only access to the machine
# using a specific IP.
config.vm.network "private_network", ip: "192.168.33.12"
# Create a public network, which generally matched to bridged network.
# Bridged networks make the machine appear as another physical device on
# your network.
# config.vm.network "public_network"
# Share an additional folder to the guest VM. The first argument is
# the path on the host to the actual folder. The second argument is
# the path on the guest to mount the folder. And the optional third
# argument is a set of non-required options.
config.vm.synced_folder ".", "/vagrant"
# Provider-specific configuration so you can fine-tune various
# backing providers for Vagrant. These expose provider-specific options.
# Example for VirtualBox:
#
config.vm.provider "virtualbox" do |vb|
# # Display the VirtualBox GUI when booting the machine
# vb.gui = true
#
# # Customize the amount of memory on the VM:
vb.memory = "1024"
end
#
# View the documentation for the provider you are using for more
# information on available options.
# Enable provisioning with a shell script. Additional provisioners such as
# Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the
# documentation for more information about their specific syntax and use.
# config.vm.provision "shell", inline: <<-SHELL
# apt-get update
# apt-get install -y apache2
# SHELL
end
$vagrant up $vagrant ssh
goをインストール
$cd /usr/local/src/ $sudo wget https://storage.googleapis.com/golang/go1.9.linux-amd64.tar.gz $sudo tar -C /usr/local/ -xzf go1.9.linux-amd64.tar.gz $echo "export GOPATH=/vagrant" >> $HOME/.bashrc $echo 'export PATH=$PATH:$GOPATH/bin' >> $HOME/.bashrc $echo 'export PATH=$PATH:/usr/local/go/bin' >> $HOME/.bashrc $source $HOME/.bashrc
supervisorをインストール
$wget https://bootstrap.pypa.io/ez_setup.py -O - | python $easy_install --version # バージョン確認 $easy_install supervisor $supervisord -v # バージョン確認
supervisorの設定ファイルを作成する
/etc/supervisord.conf を作成する。 ここでsupervisorを起動した時に、どのアプリケーションを動かすかを指定できるみたい。[program]っていう部分。
[unix_http_server] file = /tmp/supervisor.sock chmod = 0777 chown= root:root [inet_http_server] port=9001 username = admin password = yourpassword [supervisorctl] serverurl = unix:///tmp/supervisor.sock [supervisord] logfile=/var/log/supervisord/supervisord.log logfile_maxbytes=50MB logfile_backups=10 loglevel=info pidfile=/var/run/supervisord.pid nodaemon=true minfds=1024 minprocs=200 user=root childlogdir=/var/log/supervisord/ [rpcinterface:supervisor] supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface [program:my_go_app] command=/vagrant/src/src //goのバイナリのパスを指定。 autostart = true startsecs = 5 user = root redirect_stderr = true stdout_logfile = /var/log/supervisord/blogdemon.log
logのディレクトリを作る
sudo mkdir /var/log/supervisord
logファイルにはchmodで権限を与えます。
supervisor起動
sudo supervisord
上記を実行すると、こんな表示になる。
2018-01-31 08:32:21,478 INFO supervisord started with pid 2314 2018-01-31 08:32:22,482 INFO spawned: 'my_go_app' with pid 2317 2018-01-31 08:32:22,526 INFO exited: my_go_app (exit status 0; not expected) 2018-01-31 08:32:23,529 INFO spawned: 'my_go_app' with pid 2320 2018-01-31 08:32:23,544 INFO exited: my_go_app (exit status 0; not expected) 2018-01-31 08:32:25,552 INFO spawned: 'my_go_app' with pid 2323
設定ファイルで指定したprogramの名前が表示されている。
この部分。
[program:my_go_app]
/vagrant/srcでgo buildするとバイナリが作成される。commandにはそのバイナリを指定すればいけるっぽい。
バイナリの名称がおかしいのは、とりあえずおいておく。
command=/usr/local/go/bin/go run /vagrant/src/main.go
バイナリ実行するんじゃなくて、go runでもいけるっぽいかな〜。
goコマンドのフルパスと実行したいファイル。
2018-01-31 08:32:23,544 INFO exited: my_go_app (exit status 0; not expected)
何度もこんな表示出てるからなんか起きてんのかなー、でもINFOだしなあ〜とか思いながらblogdemon.logの中見てみたら実行ファイルの標準出力結果は出ていました。stdout_logfileで指定したパスが標準出力の出力先になるようですね。
でも何回も実行しているみたいだから、1回の実行にしたい。 これも設定かあ。
そもそもデーモン化ってなんだよってところからやんないとなあ。