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harden both systemd services without impacting functionality #126

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harden both systemd services without impacting functionality #126

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23 changes: 23 additions & 0 deletions atop-rotate.service
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Original file line number Diff line number Diff line change
Expand Up @@ -4,3 +4,26 @@ Description=Restart atop daemon to rotate logs
[Service]
Type=oneshot
ExecStart=/usr/bin/systemctl try-restart atop.service

NoNewPrivileges=yes
CapabilityBoundingSet=
MemoryDenyWriteExecute=yes
SystemCallArchitectures=native
SystemCallFilter=@system-service

PrivateDevices=yes
PrivateUsers=yes
PrivateNetwork=yes

ProtectSystem=strict
ProtectClock=yes
ProtectControlGroups=yes
ProtectHome=true
ProtectKernelLogs=yes
ProtectKernelModules=yes
ProtectKernelTunables=yes

RestrictAddressFamilies=AF_UNIX
RestrictNamespaces=yes
RestrictRealtime=yes
RestrictSUIDSGID=yes
31 changes: 30 additions & 1 deletion atop.service
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Expand Up @@ -11,8 +11,37 @@ EnvironmentFile=/etc/default/atop
ExecStartPre=/bin/sh -c 'test -n "$LOGINTERVAL" -a "$LOGINTERVAL" -eq "$LOGINTERVAL"'
ExecStartPre=/bin/sh -c 'test -n "$LOGGENERATIONS" -a "$LOGGENERATIONS" -eq "$LOGGENERATIONS"'
ExecStart=/bin/sh -c 'exec /usr/bin/atop ${LOGOPTS} -w "${LOGPATH}/atop_$(date +%%Y%%m%%d)" ${LOGINTERVAL}'
ExecStartPost=/usr/bin/find "${LOGPATH}" -name "atop_*" -mtime +${LOGGENERATIONS} -exec rm -v {} \;
ExecStartPost=/usr/bin/find "${LOGPATH}" -name "atop_*" -mtime +${LOGGENERATIONS} -delete
KillSignal=SIGUSR2

NoNewPrivileges=yes
CapabilityBoundingSet=
SystemCallArchitectures=native
SystemCallFilter=@system-service perf_event_open acct

PrivateDevices=yes
PrivateUsers=yes
PrivateNetwork=yes
PrivateTmp=yes

ProtectSystem=strict
ProtectClock=yes
ProtectControlGroups=yes
ProtectHome=true
ProtectKernelLogs=yes
ProtectKernelModules=yes
ProtectKernelTunables=yes

RestrictAddressFamilies=~AF_INET AF_INET6 AF_PACKET
RestrictNamespaces=yes
RestrictRealtime=yes
RestrictSUIDSGID=yes

LogsDirectory=atop
MemoryDenyWriteExecute=yes

CacheDirectory=atop.d
LogsDirectory=atop

[Install]
WantedBy=multi-user.target