diff options
| -rw-r--r-- | puppet/services/kernel.yaml | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/puppet/services/kernel.yaml b/puppet/services/kernel.yaml index 697ec228..8121454b 100644 --- a/puppet/services/kernel.yaml +++ b/puppet/services/kernel.yaml @@ -34,6 +34,28 @@ parameters: default: 0 description: Configures sysctl net.ipv6.{default/all}.disable_ipv6 keys type: number + NeighbourGcThreshold1: + default: 1024 + description: Configures sysctl net.ipv4.neigh.default.gc_thresh1 value. + This is the minimum number of entries to keep in the ARP + cache. The garbage collector will not run if there are + fewer than this number of entries in the cache. + type: number + NeighbourGcThreshold2: + default: 2048 + description: Configures sysctl net.ipv4.neigh.default.gc_thresh2 value. + This is the soft maximum number of entries to keep in the + ARP cache. The garbage collector will allow the number of + entries to exceed this for 5 seconds before collection will + be performed. + type: number + NeighbourGcThreshold3: + default: 4096 + description: Configures sysctl net.ipv4.neigh.default.gc_thresh3 value. + This is the hard maximum number of entries to keep in the + ARP cache. The garbage collector will always run if there + are more than this number of entries in the cache. + type: number outputs: role_data: @@ -94,5 +116,12 @@ outputs: value: 1 fs.suid_dumpable: value: 0 + #avoid neighbour table overflow on large deployments + net.ipv4.neigh.default.gc_thresh1: + value: {get_param: NeighbourGcThreshold1} + net.ipv4.neigh.default.gc_thresh2: + value: {get_param: NeighbourGcThreshold2} + net.ipv4.neigh.default.gc_thresh3: + value: {get_param: NeighbourGcThreshold3} step_config: | include ::tripleo::profile::base::kernel |