cronsun 集群部署

cronsun:
是一个分布式任务系统,单个节点和 Linux 机器上的 crontab 近似.是为了解决多台 Linux 机器上 crontab 任务管理不方便的问题,同时提供任务高可用的支持（当某个节点死机的时候可以自动调度到正常的节点执行）.支持界面管理机器上的任务,支持任务失败邮件提醒,安装简单,使用方便,是替换 crontab 一个不错的选择.

环境：
VM centos7(192.168.153.131 192.168.153.132 192.168.153.133) docker-compose docker quay.io/coreos/etcd etcdctl version: 3.3.7 API version: 2

资源：
etcd:
docker search etcd quay.io/coreos/etcd
mongodb
docker search mongo docker.io/mongo:3.4
cronsun
https://github.com/shunfei/cronsun/releases

etcd

0x01. 分别(192.168.153.131 192.168.153.132 192.168.153.133) 获取etcd镜像 docker pull quay.io/coreos/etcd

0x02. 192.168.153.131

docker run --restart always -d -v /usr/share/ca-certificates/:/etc/ssl/certs -p 4001:4001 -p 2380:2380 -p 2379:2379 \
--name etcd quay.io/coreos/etcd \
etcd \
--name etcd0 \
--advertise-client-urls http://192.168.153.131:2379,http://192.168.153.131:4001 \
--listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \
--initial-advertise-peer-urls http://192.168.153.131:2380 \
--listen-peer-urls http://0.0.0.0:2380 \
--initial-cluster-token etcd-cluster-1 \
--initial-cluster etcd0=http://192.168.153.131:2380,etcd1=http://192.168.153.132:2380,etcd2=http://192.168.153.133:2380 \
--initial-cluster-state new

0x03. 192.168.153.132

docker run --restart always -d -v /usr/share/ca-certificates/:/etc/ssl/certs -p 4001:4001 -p 2380:2380 -p 2379:2379 \
--name etcd quay.io/coreos/etcd \
etcd \
--name etcd1 \
--advertise-client-urls http://192.168.153.132:2379,http://192.168.153.132:4001 \
--listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \
--initial-advertise-peer-urls http://192.168.153.132:2380 \
--listen-peer-urls http://0.0.0.0:2380 \
--initial-cluster-token etcd-cluster-1 \
--initial-cluster etcd0=http://192.168.153.131:2380,etcd1=http://192.168.153.132:2380,etcd2=http://192.168.153.133:2380 \
--initial-cluster-state new

0x04. 192.168.153.133

docker run --restart always -d -v /usr/share/ca-certificates/:/etc/ssl/certs -p 4001:4001 -p 2380:2380 -p 2379:2379 \
--name etcd quay.io/coreos/etcd \
etcd \
-name etcd2 \
--advertise-client-urls http://192.168.153.133:2379,http://192.168.153.133:4001 \
--listen-client-urls http://0.0.0.0:2379,http://0.0.0.0:4001 \
--initial-advertise-peer-urls http://192.168.153.133:2380 \
--listen-peer-urls http://0.0.0.0:2380 \
--initial-cluster-token etcd-cluster-1 \
--initial-cluster etcd0=http://192.168.153.131:2380,etcd1=http://192.168.153.132:2380,etcd2=http://192.168.153.133:2380 \
--initial-cluster-state new

mongdb

0x01. 获取mongo镜像 docker pull docker.io/mongo

0x02. 编写docker-compose 文件 docker-compose.yml

version: '2'
services:
master:
ports:
- "27017:27017"
image: mongo:3.4
volumes:
- /home/workspace/tmp/docker/data/mongodb3.4/rs1:/data/db:z
command: mongod --dbpath /data/db --replSet newset --oplogSize 128
slave:
ports:
- "27018:27017"
image: mongo:3.4
volumes:
- /home/workspace/tmp/docker/data/mongodb3.4/rs2:/data/db:z
command: mongod --dbpath /data/db --replSet newset --oplogSize 128
myarbiter:
ports:
- "27019:27017"
image: mongo:3.4
volumes:
- /home/workspace/tmp/docker/data/mongodb3.4/rs3:/data/db:z
command: mongod --dbpath /data/db --replSet newset --smallfiles --oplogSize 128

0x03. 到docker-compose.yml 文件所在目录执行 docker-compose up

0x04. 确定主从和裁决关系 docker-compose exec master mongo rs.initiate() rs.add('slave:27017') rs.add('myarbiter:27017',true) use test db.test.insert({msg: 'this is from primary', ts: new Date()})

0x05. 确定主从和裁决关系 docker-compose exec slave mongo rs.slaveOk() use test db.test.find()

0x06. 确定主从和裁决关系 rs.slaveOk() use test db.test.find()

#不确立主从关系 cronsun 项目无法启动

cronsun

0x01. 下载cronsun https://github.com/shunfei/cronsun/releases/download/v0.3.2/cronsun-v0.3.2-linux-amd64.zip -o cronsun-v0.3.2-linux-amd64.zip
0x02. conf 目录下的配置文件：db.json 和 etcd.json,分别修改 MongoDB 和 etcd 的实际地址
0x03. 启动 web：./cronweb -conf conf/base.json 启动 node：./cronnode -conf conf/base.json
0x04. 访问前台：http://x.x.x.x:7079/ui/

参考文献:
https://www.cnblogs.com/zhangeamon/p/6139964.html
https://blog.csdn.net/zone_/article/details/79238349
https://zhangge.net/5129.html

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