only build otlp stuff for central controllers

ext/central-controller-docker/Dockerfile.builder

@@ -16,8 +16,16 @@ RUN apt -y install \
     postgresql-client \
     postgresql-client-common \
     curl \
+    libcurl4-openssl-dev \
     google-perftools \
     libgoogle-perftools-dev \
-    protobuf-compiler 
+    protobuf-compiler \
+    protobuf-compiler-grpc \
+    grpc-proto \
+    libgrpc++1.51 \
+    libgrpc++-dev \
+    libgrpc-dev \
+    libgrpc29
+
 
 RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y

ext/central-controller-docker/Dockerfile.run_base

@@ -13,5 +13,7 @@ RUN apt -y install \
     binutils \
     perf-tools-unstable \
     google-perftools \
-    gnupg
+    gnupg \
+    libgrpc++1.51 \
+    libgrpc29 
 

make-linux.mk

@@ -430,7 +430,7 @@ doc:	manpages
 
 ifeq (${ZT_OTEL},1)
 otel:
-	cd ext/opentelemetry-cpp-1.21.0 && mkdir -p localinstall && cmake -B build -S . -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=$(shell pwd)/ext/opentelemetry-cpp-1.21.0/localinstall -DBUILD_TESTING=OFF -DOPENTELEMETRY_INSTALL=ON -DWITH_BENCHMARK=OFF -DWITH_EXAMPLES=OFF -DWITH_FUNC_TESTS=OFF
+	cd ext/opentelemetry-cpp-1.21.0 && mkdir -p localinstall && cmake -B build -S . -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=$(shell pwd)/ext/opentelemetry-cpp-1.21.0/localinstall -DBUILD_TESTING=OFF -DOPENTELEMETRY_INSTALL=ON -DWITH_BENCHMARK=OFF -DWITH_EXAMPLES=OFF -DWITH_FUNC_TESTS=OFF -DUSE_THIRDPARTY_LIBRARIES=ON -DWITH_OTLP_GRPC=ON -DWITH_OTLP_HTTP=OFF -DWITH_PROMETHEUS=OFF
 	cd ext/opentelemetry-cpp-1.21.0/build && make install
 else
 otel:
@@ -458,7 +458,7 @@ _buildx:
 	@echo docker buildx inspect --bootstrap
 
 central-controller:	FORCE
-	make -j4 ZT_CONTROLLER=1 one
+	make -j4 ZT_CONTROLLER=1 ZT_OTEL=1 one
 
 central-controller-docker: _buildx FORCE
 	docker buildx build --platform linux/amd64,linux/arm64 --no-cache -t registry.zerotier.com/zerotier-central/ztcentral-controller:${TIMESTAMP} -f ext/central-controller-docker/Dockerfile --build-arg git_branch=`git name-rev --name-only HEAD` . --push