From e3a381d5a128ba0fc94130ae76ca14cfcb644d95 Mon Sep 17 00:00:00 2001
From: Takuya ASADA <syuu@scylladb.com>
Date: Mon, 5 Oct 2020 18:15:19 +0900
Subject: [PATCH] install.sh: show warning nonroot mode when systemd does not
 support user mode

On older distribution such as CentOS7, it does not support systemd user mode.
On such distribution nonroot mode does not work, show warning message and
skip running systemctl --user.

See scylladb/scylla#7071
---
 install.sh | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/install.sh b/install.sh
index 2d1fa9e..fca2ef6 100755
--- a/install.sh
+++ b/install.sh
@@ -74,6 +74,11 @@ while [ $# -gt 0 ]; do
     esac
 done
 
+check_usermode_support() {
+    user=$(systemctl --help|grep -e '--user')
+    [ -n "$user" ]
+}
+
 if ! $packaging; then
     has_java=false
     if [ -x /usr/bin/java ]; then
@@ -151,7 +156,9 @@ if $nonroot; then
     sed -i -e "s#/var/lib/scylla#$rprefix#g" "$rsysconfdir"/scylla-jmx
     sed -i -e "s#/etc/scylla#$rprefix/etc/scylla#g" "$rsysconfdir"/scylla-jmx
     sed -i -e "s#/opt/scylladb/jmx#$rprefix/jmx#g" "$rsysconfdir"/scylla-jmx
-    systemctl --user daemon-reload
+    if check_usermode_support; then
+        systemctl --user daemon-reload
+    fi
     echo "Scylla-JMX non-root install completed."
 elif ! $packaging; then
     systemctl --system daemon-reload