consul自带ACL控制功能,看了很多遍官方文档,没有配置步骤https://www.consul.io/docs/internals/acl.html 主要对各种配置参数解释,没有明确的步骤,当时唯一疑惑的是怎样生成ACL规则。看了很多相关的blog都是相似的内容,都是基础的安装测试而已,没有提到具体配置ACL,估计更多的只是实验尝试而已,没有涉及ACL配置使用。后来有辛搜到了一片文章才恍然大悟,明白ACL配置是怎么回事了,http://qiita.com/yunano/items/931448a590c7f346ed01。我之后是这样配置的:
1、对数据中心的每个server,添加acl_config.json配置:
{ "acl_datacenter" : "datacenter-tag" , "acl_master_token" : "xxxxxxxxxx9cda01" , "acl_default_policy" : "deny" } |
这3个参数每个server模式的node都必须有。相关参数解释官方文档都有,https://www.consul.io/docs/agent/options.html
acl_default_policy默认值值是allow,即能够执行任何操作,这里需要关闭。
acl_master_token需要在每个server上配置,有management级别的权限,相当于一个种子token。
acl_datacenter区域的标识。
2、通过API接口 /v1/acl/create 创建一个management用户用于管理token的权限分配,这里生成这个management级别的token需要之前配置文件里面的种子token。
curl -H "X-Consul-Token: secret" -X PUT -d '{"Name": "datacenter-tag", "Type": "management"}' http: //127 .0.0.1:8500 /v1/acl/create ?token=xxxxxxxxxx9cda01 { "ID" : "xxxxxxxxxxx-xxxx-xxxx-xxxxxxxxxxx" } |
3、可以将这个management权限的token配置在ui节目管理的节点上,便于管理ACL、k/v、service等(但是我没有这么干,不然这个node的权限太大,不便于控制)。
{ "acl_datacenter" : "datacenter-tag" , "acl_master_token" : "xxxxxxxxxxx9cda01" , "acl_token" : "b9exxxxx-xxxx-xxxx-xxx-xxxxxxxxxx291ba" , "acl_default_policy" : "deny" } |
现在就可以通过ui界面管理token的权限分配了(制订ACL规则)。
4、合理分配token的权限(制定ACL规则),官方文档有一例分配说明:
# Default all keys to read-only key "" { policy = "read" } key "foo/" { policy = "write" } key "foo/private/" { # Deny access to the dir "foo/private" policy = "deny" } # Default all services to allow registration. Also permits all # services to be discovered. service "" { policy = "write" } # Deny registration access to services prefixed "secure-". # Discovery of the service is still allowed in read mode. service "secure-" { policy = "read" } # Allow firing any user event by default. event "" { policy = "write" } # Deny firing events prefixed with "destroy-". event "destroy-" { policy = "deny" } # Default prepared queries to read-only. query "" { policy = "read" } # Read-only mode for the encryption keyring by default (list only) keyring = "read" |
API注册ACL规则用JSION数据格式:
{ "key" : { "" : { "policy" : "read" }, "foo/" : { "policy" : "write" }, "foo/private" : { "policy" : "deny" } }, "service" : { "" : { "policy" : "write" }, "secure-" : { "policy" : "read" } }, "event" : { "" : { "policy" : "write" }, "destroy-" : { "policy" : "deny" } }, "query" : { "" : { "policy" : "read" } }, "keyring" : "read" } |
创建好ACL后,将生成的acl_token xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxx 配置到每个agent,除了那个ui的server节点,当然这个节点也可以配置这个token,只是权限没有那么大了,管理不是很便捷。
client节点的acl_config.json配置:
{ "acl_datacenter" : "datacenter-tag" , "acl_token" : "xxxxxx-4bf0-xxxx-2079-xxxxxxxxx" } |
server节点的acl_config.json配置(UI的server节点除外):
{ "acl_datacenter" : "datacenter-tag" , "acl_master_token" : "xxxxxxxxxxxxxxxxx" , "acl_token" : "xxxxxxx-xxxx-xxxx-2079-xxxxxxxxxx" , "acl_default_policy" : "deny" } |
测试ACL是否生效:
[root@xx-xx-xxxx ~] # curl -X PUT -d 'test' http://127.0.0.1:8500/v1/kv/web/key1 rpc error: Permission denied [root@xx-xx-xxxx ~] # [root@xx-xx-xxxx ~] # curl -X PUT -d 'test' http://127.0.0.1:8500/v1/kv/foo/key1 true |
虽然分享了知识但也得为安全考虑,文章中所有敏感信息均已处理,比如token都是未知或无效的等。