版本

linkerd 1.0.2

namerd 1.0.2

简要说明

搭建基于dcos的linkerd 和 namerd.

使用demo来源:

linkerd 配置 linkerd-dcos.json

注意:instances是实际dcos集群数量

{  "id": "linkerd",  "instances": 15,  "cpus": 0.25,  "mem": 256.0,  "acceptedResourceRoles": ["*", "slave_public"],  "constraints": [["hostname", "UNIQUE"]],  "container": {    "type": "DOCKER",    "docker": {      "image": "buoyantio/linkerd:1.0.2",      "network": "HOST",      "privileged": true    }  },  "healthChecks": [    {      "protocol": "HTTP",      "portIndex": 0,      "path": "/admin/ping"    }  ],  "portDefinitions": [    {      "port": 9990,      "protocol": "tcp",      "name": "admin"    },    {      "port": 4140,      "protocol": "tcp",      "name": "proxy"    }  ],  "requirePorts": true,  "cmd": "echo \"{\\\"admin\\\":{\\\"port\\\":9990},\\\"telemetry\\\":[{\\\"kind\\\":\\\"io.l5d.prometheus\\\"}],\\\"routers\\\":[{\\\"protocol\\\":\\\"http\\\",\\\"servers\\\":[{\\\"port\\\":4140,\\\"ip\\\":\\\"0.0.0.0\\\"}],\\\"label\\\":\\\"linkerd_proxy\\\",\\\"interpreter\\\":{\\\"kind\\\":\\\"io.l5d.namerd\\\",\\\"dst\\\":\\\"/$/inet/namerd.marathon.mesos/4100\\\"}}]}\" | /io.buoyant/linkerd/1.0.2/bundle-exec -log.level=DEBUG -com.twitter.finagle.tracing.debugTrace=true -- -"}

namerd 配置 namerd-dcos.json

{  "id": "namerd",  "instances": 1,  "cpus": 0.25,  "mem": 256.0,  "acceptedResourceRoles": [ "slave_public" ],  "constraints": [["hostname", "UNIQUE"]],  "container": {    "type": "DOCKER",    "docker": {      "image": "buoyantio/namerd:1.0.2-dcos",      "network": "HOST",      "privileged": true    }  },  "healthChecks": [    {      "protocol": "HTTP",      "portIndex": 0,      "path": "/admin/ping"    }  ],  "portDefinitions": [    {      "port": 9001,      "protocol": "tcp",      "name": "admin"    },    {      "port": 4180,      "protocol": "tcp",      "name": "http"    },    {      "port": 4100,      "protocol": "tcp",      "name": "thrift"    }  ],  "requirePorts":true,  "cmd": "echo \"{\\\"admin\\\":{\\\"port\\\":9001},\\\"storage\\\":{\\\"kind\\\":\\\"io.l5d.zk\\\",\\\"zkAddrs\\\":[{\\\"host\\\":\\\"leader.mesos\\\",\\\"port\\\":2181}],\\\"pathPrefix\\\":\\\"/dtabs\\\",\\\"sessionTimeoutMs\\\":10000},\\\"namers\\\":[{\\\"kind\\\":\\\"io.l5d.marathon\\\",\\\"host\\\":\\\"marathon.mesos\\\",\\\"port\\\":8080}],\\\"interfaces\\\":[{\\\"kind\\\":\\\"io.l5d.thriftNameInterpreter\\\",\\\"ip\\\":\\\"0.0.0.0\\\",\\\"port\\\":4100},{\\\"kind\\\":\\\"io.l5d.httpController\\\",\\\"ip\\\":\\\"0.0.0.0\\\",\\\"port\\\":4180}]}\" | /io.buoyant/namerd/1.0.2/dcos-exec -log.level=DEBUG -com.twitter.finagle.tracing.debugTrace=true -- -"}

测试demo webapp.json

{  "id": "webapp",  "cmd": "/bin/bash -c 'echo \"webapp\" > hello; python3 -m http.server $PORT0'",  "cpus": 0.5,  "mem": 64.0,  "instances": 2,  "container": {    "type": "DOCKER",    "docker": {      "image": "python:3",      "network": "BRIDGE",      "portMappings": [        { "containerPort": 0, "hostPort": 0, "protocol": "tcp" }      ]    }  },  "healthChecks": [    {      "protocol": "HTTP",      "portIndex": 0,      "path": "/",      "gracePeriodSeconds": 5,      "intervalSeconds": 20,      "maxConsecutiveFailures": 3    }  ]}

使用dcos client发布

## 设置dcos地址dcos config set core.dcos_url $dcos_url ##部署dcos marathon app add linkerd-dcos.jsondcos marathon app add namerd-dcos.jsondcos marathon app add webapp.json

测试访问

通过dcos ui查看部署成功后,首先单独访问webapp,成功后再通过linkerd访问.

笔者当时webapp当时访问地址为 , 访问正常.

随机一台linkerd地址为:

webapp为上面测试demo部署在dcos中实例名称,hello为接口地址(具体可看测试demo webapp.json的配置).

两种方式通过linkerd访问

设置http_proxy

http_proxy=http://192.168.3.72:4140/ curl http://webapp/hello

设置header : Host

curl -H "Host: webapp" http://192.168.3.72:4140/hello

访问都返回为 webapp,证明部署成功.