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From William Hargrove <William.Hargr...@ig.com>
Subject Adding readonly access to an existing set of ACLs on a znode structure
Date Mon, 03 Aug 2015 16:08:32 GMT
I have an existing nerve znode structure as below:

[zk: localhost:2181(CONNECTED) 6] getAcl /nerve
'hmac,'nerve
: cdrwa
'hmac,'deploy
: cdrwa
'hmac,'admin
: cdrwa
'hmac,'synapse
: cdrwa
'sasl,'deploy
: cdrwa

And I wish to add a readonly user to the znode at this level (and that would apply to all
znodes recursively below this level) with setAcl  /nerve sasl:readonly:r. If I apply this
then it removes all the existing ACLs.

So, do I need to supply all the existing ACLs and append my new ACL in order to get the permissions
I require?

Furthermore, once the singular readonly ACL has been applied, it is possible to revert this?
Ie I cannot now specify my original ACL as there is no permissions to do so, so how might
I now remove the readonly access? I was thinking something like the below:

WatchedEvent state:SaslAuthenticated type:None path:null
getAcl /nerve
'sasl,'readonly
: r
[zk: localhost:2182(CONNECTED) 1] setAcl /nerve world:anyone:cdrwa
Authentication is not valid : /nerve

Many thanks in advance.

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