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Merge pull request #37 from rhuss/35-b-properties
Adapted to latest jolokia-opts changes & added karaf images created by fish-pepper
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| Original file line number | Diff line number | Diff line change |
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| @@ -1,3 +1 @@ | ||
| README-RHEL.md | ||
| .idea | ||
| *.iml | ||
| .DS_Store |
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@@ -26,4 +26,4 @@ config: | |
| lib: | ||
| version: | ||
| maven: "3.3.3-1.el7" | ||
| jolokia: "1.3.2.redhat-1" | ||
| jolokia: "1.3.5" | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| #!/bin/sh | ||
|
|
||
| # Detected container limits | ||
| # If found these are exposed as the following environment variables: | ||
| # | ||
| # - CONTAINER_MAX_MEMORY | ||
| # - CONTAINER_CORE_LIMIT | ||
| # | ||
| # This script is meant to be sourced. | ||
|
|
||
| ceiling() { | ||
| awk -vnumber="$1" -vdiv="$2" ' | ||
| function ceiling(x){ | ||
| return x%1 ? int(x)+1 : x | ||
| } | ||
| BEGIN{ | ||
| print ceiling(number/div) | ||
| } | ||
| ' | ||
| } | ||
|
|
||
| # Based on the cgroup limits, figure out the max number of core we should utilize | ||
| core_limit() { | ||
| local cpu_period_file="/sys/fs/cgroup/cpu/cpu.cfs_period_us" | ||
| local cpu_quota_file="/sys/fs/cgroup/cpu/cpu.cfs_quota_us" | ||
| if [ -r "${cpu_period_file}" ]; then | ||
| local cpu_period="$(cat ${cpu_period_file})" | ||
|
|
||
| if [ -r "${cpu_quota_file}" ]; then | ||
| local cpu_quota="$(cat ${cpu_quota_file})" | ||
| # cfs_quota_us == -1 --> no restrictions | ||
| if [ "x$cpu_quota" != "x-1" ]; then | ||
| ceiling "$cpu_quota" "$cpu_period" | ||
| fi | ||
| fi | ||
| fi | ||
| } | ||
|
|
||
| max_memory() { | ||
| # High number which is the max limit unti which memory is supposed to be | ||
| # unbounded. 512 TB for now. | ||
| local max_mem_unbounded="562949953421312" | ||
| local mem_file="/sys/fs/cgroup/memory/memory.limit_in_bytes" | ||
| if [ -r "${mem_file}" ]; then | ||
| local max_mem="$(cat ${mem_file})" | ||
| if [ ${max_mem} -lt ${max_mem_unbounded} ]; then | ||
| echo "${max_mem}" | ||
| fi | ||
| fi | ||
| } | ||
|
|
||
| local limit="$(core_limit)" | ||
| if [ x$limit != x ]; then | ||
| export CONTAINER_CORE_LIMIT="$limit" | ||
| fi | ||
|
|
||
| local max_mem="$(max_memory)" | ||
| if [ x$max_mem != x ]; then | ||
| export CONTAINER_MAX_MEMORY="$max_mem" | ||
| fi |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| #!/bin/sh | ||
|
|
||
| # Check for debug options and echo them if enabled. Meant to be included by | ||
| # a run script. | ||
|
|
||
| debug_options() { | ||
| if [ "x${JAVA_ENABLE_DEBUG}" != "x" -o "x${JAVA_DEBUG_ENABLE}" != "x" -o "x${JAVA_DEBUG}" != "x" ]; then | ||
| local debug_port=${JAVA_DEBUG_PORT:-5005} | ||
| echo "-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=${debug_port}" | ||
| fi | ||
| } | ||
|
|
||
| ## Echo options, trimming trailing and multiple spaces | ||
| echo "$(debug_options)" | awk '$1=$1' |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| #!/bin/sh | ||
| # ================================================================= | ||
| # Detect whether running in a container and set appropriate options | ||
| # for limiting Java VM resources | ||
| # | ||
| # Usage: JAVA_OPTIONS="$(java-container-options.sh)" | ||
|
|
||
| # Env Vars respected: | ||
|
|
||
| # JAVA_OPTIONS: Checked for already set options | ||
| # JAVA_MAX_MEM_RATIO: Ratio use to calculate a default maximum Memory, in percent. | ||
| # E.g. the default value "50" implies that 50% of the Memory | ||
| # given to the container is used as the maximum heap memory with | ||
| # '-Xmx'. It is a heuristic and should be better backed up with real | ||
| # experiments and measurements. | ||
| # For a good overviews what tuning options are available --> | ||
| # https://youtu.be/Vt4G-pHXfs4 | ||
| # https://www.youtube.com/watch?v=w1rZOY5gbvk | ||
| # https://vimeo.com/album/4133413/video/181900266 | ||
| # Also note that heap is only a small portion of the memory used by a JVM. There are lot | ||
| # of other memory areas (metadata, thread, code cache, ...) which addes to the overall | ||
| # size. There is no easy solution for this, 50% seems to be are reasonable compromise. | ||
| # However, when your container gets killed because of an OOM, then you should tune | ||
| # the absolute values | ||
| # | ||
|
|
||
| # Check for memory options and calculate a sane default if not given | ||
| max_memory() { | ||
| # Check whether -Xmx is already given in JAVA_OPTIONS. Then we dont | ||
| # do anything here | ||
| if echo "${JAVA_OPTIONS}" | grep -q -- "-Xmx"; then | ||
| return | ||
| fi | ||
|
|
||
| # Check if explicitely disabled | ||
| if [ "x$JAVA_MAX_MEM_RATIO" = "x0" ]; then | ||
| return | ||
| fi | ||
|
|
||
| # Check for the 'real memory size' and caluclate mx from a ratio | ||
| # given (default is 50%) | ||
| if [ "x$CONTAINER_MAX_MEMORY" != x ]; then | ||
| local max_mem="${CONTAINER_MAX_MEMORY}" | ||
| local ratio=${JAVA_MAX_MEM_RATIO:-50} | ||
| local mx=$(echo "${max_mem} ${ratio} 1048576" | awk '{printf "%d\n" , ($1*$2)/(100*$3) + 0.5}') | ||
| echo "-Xmx${mx}m" | ||
| fi | ||
| } | ||
|
|
||
| # Switch on diagnostics except when switched off | ||
| diagnostics() { | ||
| if [ "x$JAVA_DIAGNOSTICS" != "x" ]; then | ||
| echo "-XX:NativeMemoryTracking=summary -XX:+PrintGC -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+UnlockDiagnosticVMOptions" | ||
| fi | ||
| } | ||
|
|
||
| cpu_core_tunning() { | ||
| local core_limit="${JAVA_CORE_LIMIT}" | ||
| if [ "x$core_limit" = "x0" ]; then | ||
| return | ||
| fi | ||
|
|
||
| if [ "x$CONTAINER_CORE_LIMIT" != x ]; then | ||
| if [ "x$core_limit" = x ]; then | ||
| core_limit="${CONTAINER_CORE_LIMIT}" | ||
| fi | ||
| echo "-XX:ParallelGCThreads=${core_limit} " \ | ||
| "-XX:ConcGCThreads=${core_limit} " \ | ||
| "-XX:ParallelGCThreads=${core_limit} " \ | ||
| "-Djava.util.concurrent.ForkJoinPool.common.parallelism=${core_limit}" | ||
| fi | ||
| } | ||
|
|
||
| ## Echo options, trimming trailing and multiple spaces | ||
| echo "$(max_memory) $(diagnostics) $(cpu_core_tunning)" | awk '$1=$1' |
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