[Tarantool-patches] [PATCH v2] build: don't start example instance in postinstall

[Olga Arkhangelskaia <arkholga@tarantool.org>]

After tarantool installation on Debian/Ubuntu from repo, example instance
was automatically started on 3301 port. At the same time example instance
on RHEL/CentOS is started manually. Patch does the same for Debian/Ubuntu.

If tarantool is installed not for the first time,
do "apt-get purge tarantool-common" before installation to get rid of link in
/etc/tarantool/instances.enabled.

Closes #4507
---
Brabch: gh-4507-disable-start-example-instance-full-ci
@ChangeLog:
- disabled start of example instance after installing from Debian/Ubuntu
  repo.
If there is no installed version of tarantool-common, one should do
"apt-get install tarantool-common".
If tarantool-common was installed before, and even removed,
installation or upgrade won't take effect, because the link to example
instance still present in /etc/tarantool/instances.enabled.
Do following steps to get rid from example instance starting every time:
"apt-get purge tarantool-common"
"apt-get install tarantool-common"

 debian/tarantool-common.postinst  | 8 --------
 extra/dist/tarantool-generator.in | 1 +
 2 files changed, 1 insertion(+), 8 deletions(-)

diff --git a/debian/tarantool-common.postinst b/debian/tarantool-common.postinst
index e2eda3415..03e4b2215 100644
--- a/debian/tarantool-common.postinst
+++ b/debian/tarantool-common.postinst
@@ -22,14 +22,6 @@ case "$1" in
         install -d -o$SYSUSER -gadm -m2750 /var/log/tarantool
         install -d -o$SYSUSER -g$SYSUSER -m750 /var/run/tarantool
         install -d -o$SYSUSER -g$SYSUSER -m750 /var/lib/tarantool
-
-        # Enable example.lua by default
-        if [ -z $2 ] && [ ! -e /etc/tarantool/instances.enabled/example.lua ] &&
-           [ -d /etc/tarantool/instances.enabled ] &&
-           [ -d /etc/tarantool/instances.available/ ]; then
-          ln -s /etc/tarantool/instances.available/example.lua \
-                /etc/tarantool/instances.enabled/example.lua
-        fi
     ;;
 esac
 
diff --git a/extra/dist/tarantool-generator.in b/extra/dist/tarantool-generator.in
index f6a6a2540..2048b7517 100755
--- a/extra/dist/tarantool-generator.in
+++ b/extra/dist/tarantool-generator.in
@@ -13,6 +13,7 @@ mkdir -p "$wantdir"
 
 for file in @TARANTOOL_ENABLEDDIR@/*.lua; do
 	instance=`basename $file .lua`
+	[ "${instance}" = "*" ] && break  # skip empty directory
 	ln -s "$service" "$wantdir/tarantool@$instance.service"
 done
 
-- 
2.20.1 (Apple Git-117)