CentOS-7安装consul

前期准备

配置hosts

192.168.245.227 iot-node1 # server节点
192.168.245.228 iot-node2 # server节点
192.168.245.229 iot-node3 # server节点

安装工具包

sudo yum install -y zip unzip

关闭防火墙

sudo systemctl stop firewalld

离线安装consul

下载地址

https://releases.hashicorp.com/consul/1.2.2/

安装包

consul_1.2.2_linux_amd64.zip

安装consul

1）进入到consul_1.2.2_linux_amd64.zip所在目录

执行解压命令：

sudo unzip consul_1.2.2_linux_amd64.zip

2）移动consul到/usr/bin/，并授予运行权限

sudo mv consul /usr/bin/

sudo chmod uog+x /usr/bin/consul

3）创建文件夹并授权

sudo mkdir -p /opt/consul/data

sudo mkdir -p /opt/consul/conf

sudo chmod uog+rw /opt/consul/data

4）编辑文件/etc/default/consul

sudo vi /etc/default/consul

/etc/default/consul内容：

CONSUL_FLAGS="-ui -disable-host-node-id -config-file
/opt/consul/conf/server.json"

配置consul

1）配置consul-node1

sudo vi /opt/consul/conf/server.json

/opt/consul/conf/server.json内容：

{
“datacenter”: “dc1”,
“data_dir”: “/opt/consul/data”,
“log_level”: “INFO”,
“node_name”: “consul-node1”,
“server”: true,
“bootstrap_expect”: 3,
“bind_addr”: “192.168.245.227”,
“client_addr”: “192.168.245.227”,
“retry_join”: [“192.168.245.227”,
“192.168.245.228”,
“192.168.245.229”],
“retry_interval”: “30s”,
“enable_debug”: false,
“rejoin_after_leave”: true,
“start_join”: [“192.168.245.227”,
“192.168.245.228”,
“192.168.245.229”],
“enable_syslog”: true,
“syslog_facility”: “local0”
}

2）配置consul-node2

sudo vi /opt/consul/conf/server.json

/opt/consul/conf/server.json内容：

{
“datacenter”: “dc1”,
“data_dir”: “/opt/consul/data”,
“log_level”: “INFO”,
“node_name”: “consul-node2”,
“server”: true,
“bootstrap_expect”: 3,
“bind_addr”: “192.168.245.228”,
“client_addr”: “192.168.245.228”,
“retry_join”: [“192.168.245.227”,
“192.168.245.228”,
“192.168.245.229”],
“retry_interval”: “30s”,
“enable_debug”: false,
“rejoin_after_leave”: true,
“start_join”: [“192.168.245.227”,
“192.168.245.228”,
“192.168.245.229”],
“enable_syslog”: true,
“syslog_facility”: “local0”
}

3）配置consul-node3

sudo vi /opt/consul/conf/server.json

/opt/consul/conf/server.json内容：

{
“datacenter”: “dc1”,
“data_dir”: “/opt/consul/data”,
“log_level”: “INFO”,
“node_name”: “consul-node3”,
“server”: true,
“bootstrap_expect”: 3,
“bind_addr”: “192.168.245.229”,
“client_addr”: “192.168.245.229”,
“retry_join”: [“192.168.245.227”,
“192.168.245.228”,
“192.168.245.229”],
“retry_interval”: “30s”,
“enable_debug”: false,
“rejoin_after_leave”: true,
“start_join”: [“192.168.245.227”,
“192.168.245.228”,
“192.168.245.229”],
“enable_syslog”: true,
“syslog_facility”: “local0”
}

配置Syslog日志

1）创建日志存放目录,并授权

sudo mkdir /var/log/consul

sudo chmod uog+rwx /var/log/consul

2）修改rsyslog默认配置文件

sudo vi /etc/rsyslog.d/50-default.conf

/etc/rsyslog.d/50-default.conf添加内容：

consul.* /var/log/consul/consul.log

3）创建日志轮循规则

sudo tee /etc/logrotate.d/consul <<-‘EOF’
/var/log/consul/*log {
missingok
compress
notifempty
daily
rotate 5
create 0600 root root
}
EOF

4）重启rsyslog

sudo systemctl daemon-reload

sudo systemctl restart rsyslog

注册consul服务

sudo vi /usr/lib/systemd/system/consul.service

/usr/lib/systemd/system/consul.service内容：

[Unit]
Description=Consul service discovery agent
Requires=network-online.target
After=network-online.target
[Service]
User=root
Type=notify
Environment=GOMAXPROCS=2
EnvironmentFile=-/etc/default/consul
ExecStart=/usr/bin/consul agent $CONSUL_FLAGS
ExecReload=/bin/kill -HUP $MAINPID
KillSignal=SIGTERM
Restart=on-failure
TimeoutStopSec=5
[Install]
WantedBy=multi-user.target

启动/停止/查看consul

sudo systemctl start consul
sudo systemctl stop consul
sudo systemctl status consul

设置开机启动

sudo systemctl enable consul