systemd service files for running TeamCity (create in /usr/lib/systemd/system)

teamcity-agent.service

[Unit]
Description=TeamCity Build Agent
After=network.target

[Service]
Type=forking
RemainAfterExit=yes
User=teamcity
Group=users
PIDFile=/opt/teamcity-agent/logs/buildAgent.pid
Environment="JAVA_HOME=/usr/java/latest"
ExecStart=/opt/teamcity-agent/bin/agent.sh start
ExecStop=/opt/teamcity-agent/bin/agent.sh stop

# agent will exit w/ 143 during upgrade process
SuccessExitStatus=143 0

[Install]
WantedBy=multi-user.target

teamcity-server.service

[Unit]
Description=TeamCity Server
After=network.target

[Service]
Type=forking

Environment="JAVA_HOME=/usr/java/latest"
Environment=TEAMCITY_DATA_PATH=/data
Environment=TEAMCITY_SERVER_MEM_OPTS='-Xms4g -XX:ReservedCodeCacheSize=1g'
Environment=TEAMCITY_SERVER_OPTS=
Environment=CATALINA_OPTS='-Dhttps.protocols=TLSv1.2 -Djdk.tls.client.protocols=TLSv1.2 -Duser.timezone=America/Los_Angeles -Djava.awt.headless=true'
Environment=CATALINA_TMPDIR=/data/tmp

# default pid file location (as of 2018.x at least)
PIDFile=/opt/teamcity-server/logs/teamcity.pid

User=teamcity
Group=users

# running w/ 'User=' here only works if using ports 1024 > in server.xml
ExecStart=/opt/teamcity-server/bin/teamcity-server.sh start
ExecStop=/opt/teamcity-server/bin/teamcity-server.sh stop

# another option is the tomcat-ism:
# ExecStart=/opt/teamcity-server/bin/teamcity-server.sh start <user>
# ExecStop=/opt/teamcity-server/bin/teamcity-server.sh stop <user>

[Install]
WantedBy=multi-user.target