Documentation/networking/ipvs-sysctl.rst

1 .. SPDX-License-Identifier: GPL-2.0
4 IPvs-sysctl
10 am_droprate - INTEGER
16 amemthresh - INTEGER
25 backup_only - BOOLEAN
26 	- 0 - disabled (default)
27 	- not 0 - enabled
32 conn_reuse_mode - INTEGER
33 	1 - default
52 conntrack - BOOLEAN
53 	- 0 - disabled (default)
54 	- not 0 - enabled
69 cache_bypass - BOOLEAN
70 	- 0 - disabled (default)
71 	- not 0 - enabled
75 	address is not local (iph->daddr is RTN_UNICAST). It is mostly
78 debug_level - INTEGER
79 	- 0          - transmission error messages (default)
80 	- 1          - non-fatal error messages
81 	- 2          - configuration
82 	- 3          - destination trash
83 	- 4          - drop entry
84 	- 5          - service lookup
85 	- 6          - scheduling
86 	- 7          - connection new/expire, lookup and synchronization
87 	- 8          - state transition
88 	- 9          - binding destination, template checks and applications
89 	- 10         - IPVS packet transmission
90 	- 11         - IPVS packet handling (ip_vs_in/ip_vs_out)
91 	- 12 or more - packet traversal
100 drop_entry - INTEGER
101 	- 0  - disabled (default)
108 	the SYN-RECV/SYNACK state, which should be effective against
109 	syn-flooding attack.
118 drop_packet - INTEGER
119 	- 0  - disabled (default)
127 	formula: rate = amemthresh / (amemthresh - available_memory)
132 est_cpulist - CPULIST
136 	empty list - stop kthread tasks and estimation
137 	default - the system's housekeeping CPUs for kthreads
141 	"0-N": all possible CPUs, N denotes last CPU number
142 	"0,1-N:1/2": first and all CPUs with odd number
145 est_nice - INTEGER
147 	Valid range: -20 (more favorable) .. 19 (less favorable)
152 expire_nodest_conn - BOOLEAN
153 	- 0 - disabled (default)
154 	- not 0 - enabled
158 	be useful, when user-space monitoring program deletes the
170 expire_quiescent_template - BOOLEAN
171 	- 0 - disabled (default)
172 	- not 0 - enabled
174 	When set to a non-zero value, the load balancer will expire
186 ignore_tunneled - BOOLEAN
187 	- 0 - disabled (default)
188 	- not 0 - enabled
196 nat_icmp_send - BOOLEAN
197 	- 0 - disabled (default)
198 	- not 0 - enabled
204 pmtu_disc - BOOLEAN
205 	- 0 - disabled
206 	- not 0 - enabled (default)
212 secure_tcp - INTEGER
213 	- 0  - disabled (default)
222 sync_threshold - vector of 2 INTEGERs: sync_threshold, sync_period
235 sync_refresh_period - UNSIGNED INTEGER
247 sync_retries - INTEGER
254 sync_qlen_max - UNSIGNED LONG
262 sync_sock_size - INTEGER
268 sync_ports - INTEGER
274 	8848+sync_ports-1.
276 snat_reroute - BOOLEAN
277 	- 0 - disabled
278 	- not 0 - enabled (default)
281 	realservers so that they are routed as if they originate from the
282 	director. Otherwise they are routed as if they are forwarded by the
286 	of a packet originating from a director is routed differently to a
293 sync_persist_mode - INTEGER
304 	sloppy_sctp flags on backup servers. For non-persistent services
307 sync_version - INTEGER
323 run_estimation - BOOLEAN
324 	0 - disabled
325 	not 0 - enabled (default)
330 	You can always re-enable estimation by setting this value to 1.
331 	But be careful, the first estimation after re-enable is not