Add check to avoid auto-installing new major versions of Netdata. (#15898)

* Add check to avoid auto-installing new major versions of Netdata.

With the specific intent of avoiding breaking user’s systems.

* Add latest tag check override.

* Fix local testing fallback case.

* Fix version parsing code.

* Allow major version updates in CI jobs.

* Fix fetching latest tag.

* Properly fix CI jobs.

* Switch to using a list of accepted major versions.

And pre-populate it with versions we think are fine.

* Fix CI again.

* Fix check logic.

1 files changed, 23 insertions, 3 deletions

diff --git a/system/netdata-updater.conf b/system/netdata-updater.conf
index 09af046be4..ac35131da3 100644
--- a/system/netdata-updater.conf
+++ b/system/netdata-updater.conf
@@ -2,10 +2,30 @@
 #
 # When run non-interactively, the updater script will delay some
 # random number of seconds up to NETDATA_UPDATER_JITTER before
-# actually running the update. The default is 3600 (one
-# hour). Most users should not need to change this.
+# actually running the update. The default is 3600 (one hour). Most
+# users should not need to change this.
 #NETDATA_UPDATER_JITTER="3600"
 
+# By default, the updater will update to new major versions without asking
+# for user confirmation once we consider them ready for general usage.
+#
+# You can override this behavior by setting NETDATA_ACCEPT_MAJOR_VERSIONS
+# to a space separated list of major versions you are willing to update
+# to. Attempts to update to newer major versions not listed in this variable
+# will be treated as a fatal error.
+#
+# An empty value is equivalent to the default behavior.
+#
+# This only applies to static builds and local builds. If you are using
+# our native packages, use your package manager’s existing functionality
+# to prevent updates (for example, pinning versions on APT-based systems,
+# or the DNF versionlock plugin on RHEL/Fedora).
+#
+# To lock yourself to a specific major version, set this value to exactly
+# that major version number. For example, to stay on version 1.x even
+# if 2.x has been released, set this to a value of `1`.
+#NETDATA_ACCEPT_MAJOR_VERSIONS=''
+
 # On systems using our native packages, the updater will by default
 # attempt to install optional plugin packages that would be installed by
 # default on clean installs if those packages are supported on the system.
@@ -13,7 +33,7 @@
 # This behavior can be disabled on a per-package basis using the below
 # variables. Setting the variable to a value other than 0 will disable
 # the corresponding package (note that you still need to remove the package
-# yourself if you don0t want it, this just controls whether the updater
+# yourself if you don't want it, this just controls whether the updater
 # will try to ensure it’s installed or not).
 #
 # NETDATA_NO_SYSTEMD_JOURNAL controls the `netdata-plugin-systemd-journal`