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# Templated service file for redis-server(1)
#
# Each instance of redis-server requires its own configuration file:
#
#   $ cp /etc/redis/redis.conf /etc/redis/redis-myname.conf
#   $ chown redis:redis /etc/redis/redis-myname.conf
#
# Ensure each instance is using their own database:
#
#   $ sed -i -e 's@^dbfilename .*@dbfilename dump-myname.rdb@' /etc/redis/redis-myname.conf
#
# We then listen exlusively on UNIX sockets to avoid TCP port collisions:
#
#   $ sed -i -e 's@^port .*@port 0@' /etc/redis/redis-myname.conf
#   $ sed -i -e 's@^\(# \)\{0,1\}unixsocket .*@unixsocket /run/redis-myname/redis-server.sock@' /etc/redis/redis-myname.conf
#
# ... and ensure we are logging, etc. in a unique location:
#
#   $ sed -i -e 's@^logfile .*@logfile /var/log/redis/redis-server-myname.log@' /etc/redis/redis-myname.conf
#   $ sed -i -e 's@^pidfile .*@pidfile /run/redis-myname/redis-server.pid@' /etc/redis/redis-myname.conf
#
# We can then start the service as follows, validating we are using our own
# configuration:
#
#   $ systemctl start redis-server@myname.service
#   $ redis-cli -s /run/redis-myname/redis-server.sock info | grep config_file
#
#  -- Chris Lamb <lamby@debian.org>  Mon, 09 Oct 2017 22:17:24 +0100
[Unit]
Description=Advanced key-value store (%I)
After=network.target
Documentation=http://redis.io/documentation, man:redis-server(1)

[Service]
Type=notify
ExecStart=/usr/bin/redis-server /etc/redis/redis-%i.conf
TimeoutStopSec=0
Restart=always
User=redis
Group=redis
RuntimeDirectory=redis-%i
RuntimeDirectoryMode=2755

UMask=007
PrivateTmp=yes
LimitNOFILE=65535
PrivateDevices=yes
ProtectHome=yes
ReadOnlyDirectories=/
ReadWriteDirectories=-/var/lib/redis
ReadWriteDirectories=-/var/log/redis
ReadWriteDirectories=-/run/redis-%i

NoNewPrivileges=true
CapabilityBoundingSet=CAP_SYS_RESOURCE
RestrictAddressFamilies=AF_INET AF_INET6 AF_UNIX
MemoryDenyWriteExecute=true
ProtectKernelModules=true
ProtectKernelTunables=true
ProtectControlGroups=true
RestrictRealtime=true
RestrictNamespaces=true

# redis-server can write to its own config file when in cluster mode so we
# permit writing there by default. If you are not using this feature, it is
# recommended that you replace the following lines with "ProtectSystem=full".
ProtectSystem=true
ReadWriteDirectories=-/etc/redis

[Install]
WantedBy=multi-user.target