[rocketmq-operator] 01/01: docs(README): change default memory resource limit config to avoid broker pod OOMKilled error

[li...@apache.org]

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liurui pushed a commit to branch change-default-resource-limit
in repository https://gitbox.apache.org/repos/asf/rocketmq-operator.git

commit 21eb243cf5efd70b79dcf469578e5afe96fa9b4b
Author: liuruiyiyang <li...@apache.org>
AuthorDate: Mon Aug 24 17:17:56 2020 +0800

    docs(README): change default memory resource limit config to avoid broker pod OOMKilled error
---
 README.md                                       | 4 +++-
 example/rocketmq_v1alpha1_broker_cr.yaml        | 2 +-
 example/rocketmq_v1alpha1_rocketmq_cluster.yaml | 2 +-
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index a181604..ff844ef 100644
--- a/README.md
+++ b/README.md
@@ -183,7 +183,7 @@ spec:
       memory: "2048Mi"
       cpu: "250m"
     limits:
-      memory: "4096Mi"
+      memory: "12288Mi"
       cpu: "500m"
   # allowRestart defines whether allow pod restart
   allowRestart: true
@@ -252,6 +252,8 @@ spec:
 
 which defines the RocketMQ name server cluster and the broker cluster scale, the [ip:port] list of name service and so on. By default, the nameServers is an empty string which means it is automatically obtained by the operator.
 
+> Notice: Currently the broker image use the formula ```max(min(1/2 ram, 1024MB), min(1/4 ram, 8GB))``` to calculate JVM Xmx size in which ```ram``` is the host memory size. If the memory resource limit is lower than the container requirement, it may occur the ```OOMkilled``` error.
+
 ### Create RocketMQ Cluster
 
 1. Deploy the RocketMQ name service cluster by running:
diff --git a/example/rocketmq_v1alpha1_broker_cr.yaml b/example/rocketmq_v1alpha1_broker_cr.yaml
index 1de157e..ff7ec72 100644
--- a/example/rocketmq_v1alpha1_broker_cr.yaml
+++ b/example/rocketmq_v1alpha1_broker_cr.yaml
@@ -37,7 +37,7 @@ spec:
       memory: "2048Mi"
       cpu: "250m"
     limits:
-      memory: "4096Mi"
+      memory: "12288Mi"
       cpu: "500m"
   # allowRestart defines whether allow pod restart
   allowRestart: true
diff --git a/example/rocketmq_v1alpha1_rocketmq_cluster.yaml b/example/rocketmq_v1alpha1_rocketmq_cluster.yaml
index f464b67..f39a2f3 100644
--- a/example/rocketmq_v1alpha1_rocketmq_cluster.yaml
+++ b/example/rocketmq_v1alpha1_rocketmq_cluster.yaml
@@ -37,7 +37,7 @@ spec:
       memory: "2048Mi"
       cpu: "250m"
     limits:
-      memory: "4096Mi"
+      memory: "12288Mi"
       cpu: "500m"
   # allowRestart defines whether allow pod restart
   allowRestart: true