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Move RABBIT_HOST to lib/rpc_backend

This moves setting of RABBIT_HOST from stack.sh to lib/rpc_backend
so it may be used in grenade runs, which don't have the defaulted
value from stack.sh. The RABBIT_HOST is needed in order to call
get_transport_url in lib/rpc_backend.

Change-Id: I504f7fac7bb9a8c158e20046dbd1dd2d507db02b
Closes-Bug: #1649586
Depends-On: I3d4d7b309e50f4e2970cda55aada02d68c4fa705

Pawel Koniszewski authored on 2016/12/21 21:27:09
Showing 2 changed files
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@@ -25,6 +25,9 @@ _XTRACE_RPC_BACKEND=$(set +o | grep xtrace)
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 set +o xtrace
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 RABBIT_USERID=${RABBIT_USERID:-stackrabbit}
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+if is_service_enabled rabbit; then
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+    RABBIT_HOST=${RABBIT_HOST:-$SERVICE_HOST}
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+fi
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 # Functions
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 # ---------
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@@ -664,7 +664,6 @@ initialize_database_backends && echo "Using $DATABASE_TYPE database backend" ||
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 # In multi node DevStack, second node needs ``RABBIT_USERID``, but rabbit
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 # isn't enabled.
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 if is_service_enabled rabbit; then
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-    RABBIT_HOST=${RABBIT_HOST:-$SERVICE_HOST}
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     read_password RABBIT_PASSWORD "ENTER A PASSWORD TO USE FOR RABBIT."
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 fi
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