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Subject [GitHub] [samza-hello-samza] rmatharu commented on a change in pull request #62: Adding support for lxc on yarn for Samza
Date Wed, 19 Jun 2019 04:46:58 GMT
rmatharu commented on a change in pull request #62: Adding support for lxc on yarn for Samza
URL: https://github.com/apache/samza-hello-samza/pull/62#discussion_r295119154
 
 

 ##########
 File path: bin/setup-lxc
 ##########
 @@ -0,0 +1,345 @@
+#!/bin/bash -e
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# This script will download, setup, start, and stop servers for Kafka, YARN, and ZooKeeper,
+# as well as downloading, building and locally publishing Samza
+
+
+COMMAND=$1
+ARG0=$2
+ARG1=$3
+
+SHARED_LXC_DIR=/lxc-shared
+POSSIBLE_LXC_INTERFACES=( virbr0 lxcbr0)
+YARN_SITE_XML=conf/yarn-site.xml
+NM_LIVENESS_MS=10000 #value of the yarn.nm.liveness-monitor.expiry-interval-ms variable
+LXC_INSTANCE_TYPE="fedora"
+LXC_ROOTFS_DIR=/var/lib/lxc
+LXC_INSTANCE_START_NM_SCRIPT=startNodeManager
+
+RESOLV_CONF_FILE=/etc/resolv.conf
+
+# Helper function to test an IP address for validity:
+# Usage:
+#      valid_ip IP_ADDRESS
+#      if [[ $? -eq 0 ]]; then echo good; else echo bad; fi
+#   OR
+#      if valid_ip IP_ADDRESS; then echo good; else echo bad; fi
+#
+function valid_ip()
+{
+    local  ip=$1
+    local  stat=1
+
+    if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+        OIFS=$IFS
+        IFS='.'
+        ip=($ip)
+        IFS=$OIFS
+        [[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
+            && ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
+        stat=$?
+    fi
+    return $stat
+}
+
+function check_OS() 
+{
+	#Check if OS is linux
+	if [[ "$OSTYPE" == "linux-gnu" ]]; then
+		echo "OS check passed."
+	else
+		echo "Only RHEL-Linux is currently supported for this setup. Exiting ..."
+		exit 0
+	fi
+}
+
+
+function lxc_setup() 
+{
+
+	#Install LXC (and its dependencies)
+	echo "Beginning installation. Installing lxc on your machine"
+	sudo yum -y install epel-release
+	sudo  yum -y install lxc lxc-templates libcap-devel libcgroup wget bridge-utils lxc-extra
--skip-broken
+	echo "LXC installation complete."
+
+
+	lxcInterface=""
+	gatewayIP=""
+
+        for interface in ${POSSIBLE_LXC_INTERFACES[@]}
+        do
+                echo "Checking if $interface is valid"
+                ip_address=`ip addr show $interface | grep "inet\b" | awk '{print $2}' |
cut -d/ -f1`
+
+                if valid_ip $ip_address; then
+                        echo "Interface $interface is valid for using with LXC instances."
+                        lxcInterface=$interface
+                        gatewayIP=$ip_address
+                        break;
+                else
+                        echo "Interface $interface does not appear to be valid."
+                        continue;
+                fi
+        done
+
+	if [[ -z "$lxcInterface" ]]; then 
+		echo "Did not find a valid network interface for use with LXC. Install LXC manually (https://linuxcontainers.org/lxc/getting-started/)
and re-run."
+		exit 0
+	fi
+
+	#Print the valid interface found
+	echo "Using interface "$lxcInterface "($gatewayIP) for use with LXC"
+
+	# Create shared directory for sharing between base machine and LXC-instances
+	echo "Creating dir $SHARED_LXC_DIR to be shared between base machine and LXC-instances"
+	sudo mkdir -p $SHARED_LXC_DIR && sudo chmod 777 $SHARED_LXC_DIR
+
+	# Setting gateway IP address in conf/yarn-site.xml 
+	echo "Setting yarn.resourcemanager.hostname="$gatewayIP in $YARN_SITE_XML 
+	sed -i "/<name>yarn.resourcemanager.hostname<\/name>/!b;n;c<value>$gatewayIP</value>"
$YARN_SITE_XML
+
+	# Adding RM bind host in conf/yarn-site.xml
+	echo "Setting yarn.resourcemanager.bind-host=0.0.0.0" in $YARN_SITE_XML
+	if [[ ! -z $(grep "yarn.resourcemanager.bind-host" conf/yarn-site.xml) ]]; then 	
+
+		# Setting yarn.resourcemanager.bind-host to 0.0.0.0
+		sed -i "/<name>yarn.resourcemanager.bind-host<\/name>/!b;n;c<value>0.0.0.0</value>"
$YARN_SITE_XML
+	else 
+
+		# Appending RM bind host in conf/yarn-site.xml
+		sed -i 's/<\/configuration>/<property>\n<name>yarn.resourcemanager.bind-host<\/name>\n<value>0.0.0.0<\/value>\n<\/property><\/configuration>/'
$YARN_SITE_XML
+	fi
+
+
+	# Setting yarn.nm.liveness-monitor.expiry-interval-ms in  conf/yarn-site.xml
+	echo "Setting yarn.nm.liveness-monitor.expiry-interval-ms=$NM_LIVENESS_MS" in $YARN_SITE_XML
+	
+	if [[ ! -z $(grep "yarn.nm.liveness-monitor.expiry-interval-ms" conf/yarn-site.xml) ]];
then
 
 Review comment:
   Default value is too large for development

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