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Merge pull request #3851 from satnam6502/bigcluster

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Generate IP addresses for minions of large GCE clusters
This commit is contained in:
Tim Hockin 2015-01-29 14:34:13 -08:00
commit 35d59e6219
1 changed files with 41 additions and 1 deletions
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42
cluster/gce/config-default.sh
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@ -34,8 +34,48 @@ MASTER_NAME="${INSTANCE_PREFIX}-master"
MASTER_TAG="${INSTANCE_PREFIX}-master"
MINION_TAG="${INSTANCE_PREFIX}-minion"
MINION_NAMES=($(eval echo ${INSTANCE_PREFIX}-minion-{1..${NUM_MINIONS}}))
# Compute IP addresses for nodes.
function increment_ipv4 {
local ip_base=$1
local incr_amount=$2
local -a ip_components
local ip_regex="([0-9]+).([0-9]+).([0-9]+).([0-9]+)"
[[ $ip_base =~ $ip_regex ]]
ip_components=("${BASH_REMATCH[1]}" "${BASH_REMATCH[2]}" "${BASH_REMATCH[3]}" "${BASH_REMATCH[4]}")
ip_dec=0
local comp
for comp in "${ip_components[@]}"; do
ip_dec=$((ip_dec<<8))
ip_dec=$((ip_dec + $comp))
done
ip_dec=$((ip_dec + $incr_amount))
ip_components=()
local i
for ((i=0; i < 4; i++)); do
comp=$((ip_dec & 0xFF))
ip_components+=($comp)
ip_dec=$((ip_dec>>8))
done
echo "${ip_components[3]}.${ip_components[2]}.${ip_components[1]}.${ip_components[0]}"
}
node_count="${NUM_MINIONS}"
next_node="10.244.0.0"
node_subnet_size=24
node_subnet_count=$((2 ** (32-$node_subnet_size)))
subnets=()
for ((node_num=0; node_num<node_count; node_num++)); do
subnets+=("$next_node"/"${node_subnet_size}")
next_node=$(increment_ipv4 $next_node $node_subnet_count)
done
CLUSTER_IP_RANGE="10.244.0.0/16"
MINION_IP_RANGES=($(eval echo "10.244.{1..${NUM_MINIONS}}.0/24"))
MINION_IP_RANGES=($(eval echo "${subnets[@]}"))
MINION_SCOPES=("storage-ro" "compute-rw")
# Increase the sleep interval value if concerned about API rate limits. 3, in seconds, is the default.
POLL_SLEEP_INTERVAL=3