Haoyuan Ge harryge00

使用腾讯云备份Cassandra

从2.5.0-3.11.3版本开始，dcos cassandra 兼容S3协议对象存储的备份，腾讯云的的对象存储cos兼容AWS S3协议，所以针对s3的脚本也可以应用于腾讯云。

备份 Cassandra 数据

以腾讯云上海地区的存储（cos.ap-shanghai.myqcloud.com）为例，执行如下命令，cassandra的数据将被备份：

export AWS_ACCESS_KEY_ID=#{腾讯云的KEY_ID}	
export AWS_SECRET_ACCESS_KEY=#{腾讯云的secret_key}
export S3_BUCKET_NAME=#{腾讯云cos桶名}
dcos cassandra plan start backup-s3 \

curl -X POST -H "Authorization: token=$(dcos config show core.dcos_acs_token)" -d frameworkId=xxxxx http://xxxxxxx/mesos/master/teardown

mesos-container

为了能使用 mesos-container，需要在 mesos-slave 配置isolation, image_providers, containerizers 等：一种办法是在 /etc/default/mesos-slave 中添加如下内容：

MESOS_IMAGE_PROVIDERS=docker
MESOS_CONTAINERIZERS=docker,mesos
MESOS_ISOLATION=cgroups/cpu,cgroups/mem,cgroups/devices,cgroups/pids,cgroups/blkio,disk/du,network/cni,filesystem/linux,docker/runtime,volume/sandbox_path,volume/secret,posix/rlimits,namespaces/pid,linux/capabilities

也可以在 /etc/mesos-slave 目录下单独添加

Mesos-CLI agent插件说明

为了支持直接和 mesos-agent 交互，并执行 exec/list/attach 这些命令，在 src/python/cli_new 中添加了新的插件 agent-container。命令用法如下：

# mesos agent-container list
Container ID                          Executor ID                                                Framework ID                                 
89bf1287-c1d9-495d-97e7-654fb5258009  nginx.e37ad665-9df4-11e9-8529-a620e9d3bf81                 961adbe5-65e7-4bdf-a6c8-acf7540dc6b2-0000  
2830ea3d-b974-4774-8f44-cc3abef3c13d  testucr.9ed70b92-9db7-11e9-8529-a620e9d3bf81               961adbe5-65e7-4bdf-a6c8-acf7540dc6b2-0000

	loopback_users.guest = false
	total_memory_available_override_value = 1107296256
	listeners.tcp.default = 5672
	default_pass = password
	default_user = admin
	management.tcp.port = 15672
	cluster_formation.peer_discovery_backend = rabbit_peer_discovery_classic_config
	cluster_formation.classic_config.nodes.0 = testrabbitmq3.autoip.dcos.thisdcos.directory


	name: {{FRAMEWORK_NAME}}
	scheduler:
	principal: {{FRAMEWORK_PRINCIPAL}}
	user: {{FRAMEWORK_USER}}
	pods:
	mongorep:
	count: 3
	image: {{MONGO_IMAGE}}
	placement: '{{{NODE_PLACEMENT}}}'

	cluster-enabled yes
	cluster-require-full-coverage no
	cluster-node-timeout 15000
	cluster-config-file /data/nodes.conf
	cluster-migration-barrier 1
	appendonly yes
	protected-mode no

	#!/bin/sh
	REDIS_NODES="/data/nodes.conf"
	sed -i -e "/myself/ s/[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}/${HOST}/" ${REDIS_NODES}
	exec "$@"


	if [ -z $JMX_PORT ]; then
	export JMX_PORT=7199
	echo "set JMX_PORT to default value: $JMX_PORT"
	fi

	if [ -d python-dist ]; then
	export PATH=$MESOS_SANDBOX/python-dist/bin:$PATH ;
	fi

	echo "hello, remote user!"
	sleep 10
	echo "hello, remote user!"