diff --git a/doc/sphinx/arm/agent.rst b/doc/sphinx/arm/agent.rst
index 090ba1ac7c..9a2369e47b 100644
--- a/doc/sphinx/arm/agent.rst
+++ b/doc/sphinx/arm/agent.rst
@@ -39,9 +39,9 @@ The CA processes received commands according to the following algorithm:
 
 .. note::
 
-   The CA will be deprecated by a future Kea release: its function has
-   been moved to Kea servers since release 2.7.2, see the section about
-   migration from CA (:ref:`ctrl-channel-migration`).
+   The CA is deprecated: its function has been moved to Kea servers since
+   release 2.7.2, see the section about migration from CA
+   (:ref:`ctrl-channel-migration`).
 
 .. _agent-configuration:
 
diff --git a/src/bin/agent/ca_messages.cc b/src/bin/agent/ca_messages.cc
index c07dd2fdd9..090444212d 100644
--- a/src/bin/agent/ca_messages.cc
+++ b/src/bin/agent/ca_messages.cc
@@ -1,4 +1,4 @@
-// File created from src/bin/agent/ca_messages.mes
+// File created from ../src/bin/agent/ca_messages.mes
 
 #include <cstddef>
 #include <log/message_types.h>
@@ -21,6 +21,7 @@ extern const isc::log::MessageID CTRL_AGENT_HTTPS_SERVICE_UPDATED = "CTRL_AGENT_
 extern const isc::log::MessageID CTRL_AGENT_HTTP_SERVICE_REUSE_FAILED = "CTRL_AGENT_HTTP_SERVICE_REUSE_FAILED";
 extern const isc::log::MessageID CTRL_AGENT_HTTP_SERVICE_STARTED = "CTRL_AGENT_HTTP_SERVICE_STARTED";
 extern const isc::log::MessageID CTRL_AGENT_HTTP_SERVICE_UPDATED = "CTRL_AGENT_HTTP_SERVICE_UPDATED";
+extern const isc::log::MessageID CTRL_AGENT_IS_DEPRECATED = "CTRL_AGENT_IS_DEPRECATED";
 extern const isc::log::MessageID CTRL_AGENT_RUN_EXIT = "CTRL_AGENT_RUN_EXIT";
 extern const isc::log::MessageID CTRL_AGENT_SECURITY_CHECKS_DISABLED = "CTRL_AGENT_SECURITY_CHECKS_DISABLED";
 extern const isc::log::MessageID CTRL_AGENT_STARTED = "CTRL_AGENT_STARTED";
@@ -45,6 +46,7 @@ const char* values[] = {
     "CTRL_AGENT_HTTP_SERVICE_REUSE_FAILED", "failed to reused HTTP service bound to address: %1 port: %2",
     "CTRL_AGENT_HTTP_SERVICE_STARTED", "HTTP service bound to address: %1 port: %2",
     "CTRL_AGENT_HTTP_SERVICE_UPDATED", "reused HTTP service bound to address: %1 port: %2",
+    "CTRL_AGENT_IS_DEPRECATED", "Kea Control Agent is deprecated. Its function has been moved to Kea servers.",
     "CTRL_AGENT_RUN_EXIT", "application is exiting the event loop",
     "CTRL_AGENT_SECURITY_CHECKS_DISABLED", "Invoked with command line option -X, Security checks are disabled!!",
     "CTRL_AGENT_STARTED", "Kea Control Agent version %1 started",
diff --git a/src/bin/agent/ca_messages.h b/src/bin/agent/ca_messages.h
index d0249603b7..bcd6643129 100644
--- a/src/bin/agent/ca_messages.h
+++ b/src/bin/agent/ca_messages.h
@@ -1,4 +1,4 @@
-// File created from src/bin/agent/ca_messages.mes
+// File created from ../src/bin/agent/ca_messages.mes
 
 #ifndef CA_MESSAGES_H
 #define CA_MESSAGES_H
@@ -22,6 +22,7 @@ extern const isc::log::MessageID CTRL_AGENT_HTTPS_SERVICE_UPDATED;
 extern const isc::log::MessageID CTRL_AGENT_HTTP_SERVICE_REUSE_FAILED;
 extern const isc::log::MessageID CTRL_AGENT_HTTP_SERVICE_STARTED;
 extern const isc::log::MessageID CTRL_AGENT_HTTP_SERVICE_UPDATED;
+extern const isc::log::MessageID CTRL_AGENT_IS_DEPRECATED;
 extern const isc::log::MessageID CTRL_AGENT_RUN_EXIT;
 extern const isc::log::MessageID CTRL_AGENT_SECURITY_CHECKS_DISABLED;
 extern const isc::log::MessageID CTRL_AGENT_STARTED;
diff --git a/src/bin/agent/ca_messages.mes b/src/bin/agent/ca_messages.mes
index b0e8adc135..3ec38f581c 100644
--- a/src/bin/agent/ca_messages.mes
+++ b/src/bin/agent/ca_messages.mes
@@ -82,9 +82,13 @@ This informational message indicates that the Control Agent has
 processed all configuration information and is ready to begin processing.
 The version is also printed.
 
+% CTRL_AGENT_IS_DEPRECATED Kea Control Agent is deprecated. Its function has been moved to Kea servers.
+This warning message indicates that the Control Agent has been deprecated.
+All its function has been moved to Kea servers.
+
 % CTRL_AGENT_SECURITY_CHECKS_DISABLED Invoked with command line option -X, Security checks are disabled!!
 This warning is emitted when internal security checks normally
-performed by kea-ctrl-agent have been disabled via command line opion '-X'.
+performed by kea-ctrl-agent have been disabled via command line option '-X'.
 This means the server is not enforcing restrictions on resource
 paths or permissions.  This mode of operation may expose your
 environment to security vulnerabilities and should only be used
diff --git a/src/bin/agent/ca_process.cc b/src/bin/agent/ca_process.cc
index b3164ca244..f01dd97d4d 100644
--- a/src/bin/agent/ca_process.cc
+++ b/src/bin/agent/ca_process.cc
@@ -44,6 +44,8 @@ void
 CtrlAgentProcess::run() {
     LOG_INFO(agent_logger, CTRL_AGENT_STARTED).arg(VERSION);
 
+    LOG_WARN(agent_logger, CTRL_AGENT_IS_DEPRECATED);
+
     if (!PathChecker::shouldEnforceSecurity()) {
         LOG_WARN(agent_logger, CTRL_AGENT_SECURITY_CHECKS_DISABLED);
     }
diff --git a/src/bin/dhcp4/dhcp4_messages.mes b/src/bin/dhcp4/dhcp4_messages.mes
index 332232ec25..baab461ef3 100644
--- a/src/bin/dhcp4/dhcp4_messages.mes
+++ b/src/bin/dhcp4/dhcp4_messages.mes
@@ -1185,7 +1185,7 @@ expected: the erroneous response is dropped, the discover query is displayed.
 
 % DHCP4_SECURITY_CHECKS_DISABLED Invoked with command line option -X, Security checks are disabled!!
 This warning is emitted when internal security checks normally
-performed by kea-dhcp4 have been disabled via command line opion '-X'.
+performed by kea-dhcp4 have been disabled via command line option '-X'.
 This means the server is not enforcing restrictions on resource
 paths or permissions.  This mode of operation may expose your
 environment to security vulnerabilities and should only be used
diff --git a/src/bin/dhcp6/dhcp6_messages.mes b/src/bin/dhcp6/dhcp6_messages.mes
index 6f75fe6aba..235179df7e 100644
--- a/src/bin/dhcp6/dhcp6_messages.mes
+++ b/src/bin/dhcp6/dhcp6_messages.mes
@@ -1162,7 +1162,7 @@ new server id.
 
 % DHCP6_SECURITY_CHECKS_DISABLED Invoked with command line option -X, Security checks are disabled!!
 This warning is emitted when internal security checks normally
-performed by kea-dhcp6 have been disabled via command line opion '-X'.
+performed by kea-dhcp6 have been disabled via command line option '-X'.
 This means the server is not enforcing restrictions on resource
 paths or permissions.  This mode of operation may expose your
 environment to security vulnerabilities and should only be used
diff --git a/src/lib/d2srv/d2_messages.mes b/src/lib/d2srv/d2_messages.mes
index c3b3c42f81..35f313459e 100644
--- a/src/lib/d2srv/d2_messages.mes
+++ b/src/lib/d2srv/d2_messages.mes
@@ -450,7 +450,7 @@ response from a DNS server.
 
 % DHCP_DDNS_SECURITY_CHECKS_DISABLED Invoked with command line option -X, Security checks are disabled!!
 This warning is emitted when internal security checks normally
-performed by kea-dhcp-ddns have been disabled via command line opion '-X'.
+performed by kea-dhcp-ddns have been disabled via command line option '-X'.
 This means the server is not enforcing restrictions on resource
 paths or permissions.  This mode of operation may expose your
 environment to security vulnerabilities and should only be used