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cf-pg-cluster.json
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cf-pg-cluster.json
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{
"AWSTemplateFormatVersion": "2010-09-09",
"Description": "",
"Parameters": {
"BaseImage": {
"Type": "String",
"Default": "ami-005973cfb88e3d3af",
"AllowedValues": [
"ami-005973cfb88e3d3af"
]
},
"KeyName": {
"Description": "",
"Type": "AWS::EC2::KeyPair::KeyName",
"ConstraintDescription": "must be the name of an existing EC2 KeyPair."
},
"AvailabilityZone": {
"Description": "",
"Type": "AWS::EC2::AvailabilityZone::Name"
},
"InstanceTypeRW": {
"Description": "PostgreSQL EC2 instance type",
"Type": "String",
"AllowedValues": [
"r5a.2xlarge",
"r5a.xlarge",
"t3a.medium"
],
"ConstraintDescription": "must be a valid EC2 instance type."
},
"InstanceTypeRO": {
"Description": "PostgreSQL EC2 instance type",
"Type": "String",
"Default": "not_set",
"AllowedValues": [
"not_set",
"i3en.2xlarge",
"i3en.xlarge"
],
"ConstraintDescription": "must be a valid EC2 instance type."
},
"SSHLocation": {
"Description": " The IP address range that can be used to SSH to the EC2 instances",
"Type": "String",
"MinLength": "9",
"MaxLength": "18",
"Default": "0.0.0.0/0",
"AllowedPattern": "(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})/(\\d{1,2})",
"ConstraintDescription": "must be a valid IP CIDR range of the form x.x.x.x/x."
},
"DBPassword": {
"NoEcho": "true",
"Description": "DB Password for postgres and repuser users",
"Type": "String",
"MinLength": "1",
"MaxLength": "41",
"AllowedPattern": "[a-zA-Z0-9]*",
"ConstraintDescription": "must contain only alphanumeric characters."
}
},
"Mappings": {
"HugePages": {
"r5a.2xlarge": {
"nPages": "16000"
},
"r5a.xlarge": {
"nPages": "8000"
},
"t3a.medium": {
"nPages": "1500"
},
"i3en.2xlarge": {
"nPages": "16000"
},
"i3en.xlarge": {
"nPages": "8000"
}
}
},
"Conditions": {
"ConditionsDeployRO": {
"Fn::Not": [
{
"Fn::Equals": [
{
"Ref": "InstanceTypeRO"
},
"not_set"
]
}
]
}
},
"Resources": {
"InstanceProfile": {
"Type": "AWS::IAM::InstanceProfile",
"Properties": {
"Path": "/",
"Roles": [
"EC2_S3_Role"
]
}
},
"SG": {
"Type": "AWS::EC2::SecurityGroup",
"Properties": {
"GroupDescription": "Enable SSH and replication",
"VpcId": "vpc-5de9c836"
}
},
"SGinSelfPG": {
"Type": "AWS::EC2::SecurityGroupIngress",
"DependsOn": "SG",
"Properties": {
"GroupId": { "Ref": "SG" },
"IpProtocol": "tcp",
"FromPort": "5432",
"ToPort": "5432",
"SourceSecurityGroupId": { "Ref": "SG" }
}
},
"SGinPG": {
"Type": "AWS::EC2::SecurityGroupIngress",
"DependsOn": "SG",
"Properties": {
"GroupId": { "Ref": "SG" },
"IpProtocol": "tcp",
"FromPort": "5432",
"ToPort": "5432",
"CidrIp": { "Ref": "SSHLocation" }
}
},
"SGinSSH": {
"Type": "AWS::EC2::SecurityGroupIngress",
"DependsOn": "SG",
"Properties": {
"GroupId": { "Ref": "SG" },
"IpProtocol": "tcp",
"FromPort": "22",
"ToPort": "22",
"CidrIp": { "Ref": "SSHLocation" }
}
},
"PsqlServer": {
"Type": "AWS::EC2::Instance",
"Metadata": {
"AWS::CloudFormation::Authentication": {
"S3AccessCreds": {
"type": "S3",
"roleName": "EC2_S3_Role",
"buckets": [
"cf-pg-configs",
"cf-pg-backups"
]
}
},
"AWS::CloudFormation::Init": {
"configSets": {
"InstallAndRun": [
"Install"
],
"Configs": [
"configFiles",
"setPassword",
"setupBackup",
"restartPG",
"push1stBackup"
]
},
"Install": {
"packages": {
"yum": {
"htop": []
}
},
"commands": {
"00_command": {
"command": "/sbin/modprobe zfs"
},
"01_command": {
"command": "zpool create -o ashift=9 pgtank nvme1n1 nvme2n1"
},
"02_command": {
"command": "zfs set compression=lz4 pgtank && zfs set atime=off pgtank && zfs set relatime=on pgtank && zfs set xattr=sa pgtank && zfs set recordsize=128K pgtank && zfs set primarycache=all pgtank"
},
"03_command": {
"command": "zfs create pgtank/db"
},
"04_command": {
"command": "mkdir /pgtank/db/postgres"
},
"05_command": {
"command": "chown postgres:postgres /pgtank/db/postgres"
},
"06_command": {
"command": "mkdir /backup_scripts && chown postgres:postgres /backup_scripts "
},
"07_command": {
"command": "runuser -l postgres -c 'initdb -D /pgtank/db/postgres'"
},
"08_command": {
"command": "echo vm.nr_hugepages=$PAGE_N | tee -a /etc/sysctl.conf",
"env": {
"PAGE_N": {
"Fn::FindInMap": [
"HugePages",
{
"Ref": "InstanceTypeRW"
},
"nPages"
]
}
}
},
"09_command":{
"command": "sysctl -p /etc/sysctl.conf"
},
"10_command": {
"command": {
"Fn::Join": [
"",
[
"sudo hostnamectl set-hostname ",
{
"Ref": "AWS::StackName"
},
"-rw.myapp.local"
]
]
}
}
},
"services": {
"sysvinit": {
"cfn-hup": {
"enabled": "true",
"ensureRunning": "true",
"files": [
"/etc/cfn/cfn-hup.conf",
"/etc/cfn/hooks.d/cfn-auto-reloader.conf"
]
}
}
},
"files": {
"/etc/cfn/cfn-hup.conf": {
"content": {
"Fn::Join": [
"",
[
"[main]\n",
"stack=",
{
"Ref": "AWS::StackId"
},
"\n",
"region=",
{
"Ref": "AWS::Region"
},
"\n",
"verbose=true\n",
"interval=5\n"
]
]
},
"mode": "000400",
"owner": "root",
"group": "root"
},
"/etc/cfn/hooks.d/cfn-auto-reloader.conf": {
"content": {
"Fn::Join": [
"",
[
"[cfn-auto-reloader-hook]\n",
"triggers=post.update\n",
"path=Resources.PsqlServer.Metadata.AWS::CloudFormation::Init\n",
"action=/opt/aws/bin/cfn-init -v ",
" --stack ",
{
"Ref": "AWS::StackName"
},
" --resource PsqlServer ",
" --configsets Configs ",
" --region ",
{
"Ref": "AWS::Region"
},
"\n",
"runas=root\n"
]
]
},
"mode": "000400",
"owner": "root",
"group": "root"
}
}
},
"configFiles": {
"services": {
"systemd": {
"postgresql": {
"enabled": "true",
"ensureRunning": "true"
}
}
},
"files": {
"/pgtank/db/postgres/pg_hba.conf": {
"mode": "000755",
"owner": "postgres",
"group": "postgres",
"content": {
"Fn::Join": [
"",
[
"local all all trust\n",
"host all all 127.0.0.1/32 trust\n",
"host all all 0.0.0.0/0 scram-sha-256\n",
"host all all ::1/128 trust\n",
"local replication all trust\n",
"host replication all 127.0.0.1/32 trust\n",
"host replication all ::1/128 trust\n"
]
]
}
},
"/pgtank/db/postgres/postgresql.conf": {
"mode": "000755",
"owner": "postgres",
"group": "postgres",
"source": {
"Fn::Join": [
"",
[
"https://cf-pg-configs.s3.us-west-2.amazonaws.com/rw/",
{
"Ref": "InstanceTypeRW"
},
".conf"
]
]
},
"authentication": "S3AccessCreds"
},
"/usr/lib/systemd/system/postgresql.service": {
"mode": "000755",
"owner": "postgres",
"group": "postgres",
"content": {
"Fn::Join": [
"",
[
"[Unit]\n",
"Description=PostgreSQL database server\n",
"After=network.target\n",
"\n",
"[Service]\n",
"Type=notify\n",
"\n",
"User=postgres\n",
"Group=postgres\n",
"\n",
"# Where to send early-startup messages from the server (before the logging\n",
"# options of postgresql.conf take effect)\n",
"# This is normally controlled by the global default set by systemd\n",
"# StandardOutput=syslog\n",
"\n",
"# Disable OOM kill on the postmaster\n",
"OOMScoreAdjust=-1000\n",
"# ... but allow it still to be effective for child processes\n",
"# (note that these settings are ignored by Postgres releases before 9.5)\n",
"Environment=PG_OOM_ADJUST_FILE=/proc/self/oom_score_adj\n",
"Environment=PG_OOM_ADJUST_VALUE=0\n",
"\n",
"Environment=PGDATA=/pgtank/db/postgres\n",
"\n",
"ExecStartPre=/usr/libexec/postgresql-check-db-dir %N\n",
"# Even though the $PGDATA variable is exported (postmaster would accept that)\n",
"# use the -D option here so PGDATA content is printed by /bin/ps and by\n",
"# 'systemctl status'.\n",
"ExecStart=/usr/bin/postmaster -D ${PGDATA}\n",
"ExecReload=/bin/kill -HUP $MAINPID\n",
"KillMode=mixed\n",
"KillSignal=SIGINT\n",
"\n",
"# No artificial start/stop timeout.\n",
"TimeoutSec=0\n",
"\n",
"[Install]\n",
"WantedBy=multi-user.target\n"
]
]
}
},
"/backup_scripts/push-backup.sh": {
"mode": "000755",
"content": {
"Fn::Join": [
"",
[
"#!/bin/sh\n",
"export PGHOST=/var/run/postgresql\n",
"export PGUSER=postgres\n",
"export WALG_S3_PREFIX=s3://cf-pg-backups/",
{
"Ref": "AWS::StackName"
},
"\nexport WALG_COMPRESSION_METHOD=brotli\n",
"/usr/local/bin/wal-g backup-push /pgtank/db/postgres\n",
"/usr/local/bin/wal-g delete --confirm retain FULL 2\n"
]
]
}
},
"/backup_scripts/poll-pg_hba_update.sh": {
"mode": "000755",
"content": {
"Fn::Join": [
"",
[
"#!/bin/sh -xe\n",
"STACK_NAME='",
{
"Ref": "AWS::StackName"
},
"'\n",
"LAST_IP_FILE='/backup_scripts/last_replica_ip.txt'\n",
"REPLICA_IP=$(aws cloudformation describe-stacks --stack-name $STACK_NAME --region us-west-2 ",
"--query \"Stacks[0].Outputs[?OutputKey=='PsqlServerROIP'].OutputValue\" --output text)\n",
"if [ \"$REPLICA_IP\" = \"None\" ]; then\n",
" echo \"Replica IP not available yet.\"\n",
" exit 1\n",
"fi\n",
"if [ -f \"$LAST_IP_FILE\" ]; then\n",
" LAST_IP=$(cat \"$LAST_IP_FILE\")\n",
"else\n",
" LAST_IP=\"\"\n",
"fi\n",
"if [ \"$REPLICA_IP\" != \"$LAST_IP\" ]; then\n",
" echo \"Updating pg_hba.conf with new replica IP: $REPLICA_IP\"\n",
" cp /pgtank/db/postgres/pg_hba.conf /pgtank/db/postgres/pg_hba.conf.bak\n",
" echo \"host replication repuser $REPLICA_IP/32 scram-sha-256\" >> /pgtank/db/postgres/pg_hba.conf\n",
" psql -c \"SELECT pg_reload_conf();\"\n",
" echo \"$REPLICA_IP\" > \"$LAST_IP_FILE\"\n",
"else\n",
" echo \"Replica IP has not changed.\"\n",
"fi\n"
]
]
}
}
}
},
"setPassword": {
"commands": {
"set_password": {
"command": {
"Fn::Join": [
"",
[
"psql -U postgres -c \"ALTER USER postgres with PASSWORD '",
{
"Ref": "DBPassword"
},
"';\""
]
]
}
}
}
},
"restartPG": {
"commands": {
"restart": {
"command": "systemctl restart postgresql"
}
}
},
"push1stBackup": {
"commands": {
"pushBackup": {
"command": "runuser -l postgres -c '/backup_scripts/push-backup.sh'"
}
}
},
"setupBackup": {
"commands": {
"00_command": {
"command": "chmod u+x /backup_scripts/push-backup.sh"
},
"01_command": {
"command": "runuser -l postgres -c 'psql -U postgres -c \"CREATE EXTENSION plpython3u\" -d postgres'"
},
"02_command": {
"command": "runuser -l postgres -c 'psql -U postgres -c \"CREATE EXTENSION aws_s3\" -d postgres'"
},
"03_command": {
"command": "echo \"archive_command = 'WALG_S3_PREFIX=s3://cf-pg-backups/$BUCKUP_FOLDER wal-g wal-push %p'\" >> /pgtank/db/postgres/postgresql.conf",
"env": {
"BUCKUP_FOLDER": {
"Ref": "AWS::StackName"
}
}
},
"04_cron1_command": {
"command": "echo \"0 4 * * * /backup_scripts/push-backup.sh &> /backup_scripts/push-backup.log\" >> /var/spool/cron/postgres"
},
"04_cron2_command": {
"command": "echo \"*/5 * * * * /home/ec2-user/aws-scripts-mon/mon-put-instance-data.pl --mem-util --mem-used --disk-space-util --disk-path=/ --disk-path=/pgtank/db --from-cron\" >> /var/spool/cron/ec2-user"
},
"05_command": {
"command": "sudo -u postgres createuser -U postgres repuser -c 5 --replication -w"
}
"set_repuser_password": {
"command": {
"Fn::Join": [
"",
[
"psql -U postgres -c \"ALTER USER repuser with PASSWORD '",
{
"Ref": "DBPassword"
},
"';\""
]
]
}
},
"update_replica_ip_pg_hba_polling": {
"command": "echo \"*/5 * * * * /backup_scripts/poll-pg_hba_update.sh >> /backup_scripts/poll-pg_hba_update.log 2>&1\" >> /var/spool/cron/postgres"
}
}
}
}
},
"Properties": {
"IamInstanceProfile": {
"Ref": "InstanceProfile"
},
"Tags": [
{
"Key": "Name",
"Value": {
"Fn::Join": [
"",
[
{
"Ref": "AWS::StackName"
},
"-rw"
]
]
}
}
],
"AvailabilityZone": {
"Ref": "AvailabilityZone"
},
"ImageId": {
"Ref": "BaseImage"
},
"InstanceType": {
"Ref": "InstanceTypeRW"
},
"BlockDeviceMappings": [
{
"DeviceName": "/dev/xvda",
"Ebs": {
"VolumeType": "gp3",
"VolumeSize": "30",
"DeleteOnTermination": "true"
}
}
],
"SecurityGroupIds": [
{
"Ref": "SG"
},
"sg-0055ac66"
],
"Volumes": [
{
"Device": "/dev/sdf",
"VolumeId": {
"Ref": "disk1"
}
},
{
"Device": "/dev/sdh",
"VolumeId": {
"Ref": "disk2"
}
}
],
"KeyName": {
"Ref": "KeyName"
},
"UserData": {
"Fn::Base64": {
"Fn::Join": [
"",
[
"#!/bin/bash -xe\n",
"yum install -y aws-cfn-bootstrap\n",
"# Install the files and packages from the metadata\n",
"/opt/aws/bin/cfn-init -v ",
" --stack ",
{
"Ref": "AWS::StackName"
},
" --resource PsqlServer ",
" --configsets InstallAndRun,Configs ",
" --region ",
{
"Ref": "AWS::Region"
},
"\n",
"# Signal the status from cfn-init\n",
"/opt/aws/bin/cfn-signal -e $? ",
" --stack ",
{
"Ref": "AWS::StackName"
},
" --resource PsqlServer ",
" --region ",
{
"Ref": "AWS::Region"
},
"\n"
]
]
}
}
},
"CreationPolicy": {
"ResourceSignal": {
"Timeout": "PT10M"
}
}
},
"PsqlServerPgTankAlarm": {
"Type": "AWS::CloudWatch::Alarm",
"Properties": {
"AlarmName": {
"Fn::Join": [
"",
[
{ "Ref": "AWS::StackName" },
"-RW-PGTANK-",
{ "Ref": "PsqlServer" }
]
]
},
"Namespace": "System/Linux",
"MetricName": "DiskSpaceUtilization",
"Dimensions": [
{
"Name": "InstanceId",
"Value": { "Ref": "PsqlServer" }
},
{
"Name": "MountPath",
"Value": "/pgtank/db"
},
{
"Name": "Filesystem",
"Value": "pgtank/db"
}
],
"Statistic": "Average",
"Period": 300,
"EvaluationPeriods": 1,
"Threshold": 80,
"ComparisonOperator": "GreaterThanThreshold",
"AlarmActions": [
"arn:aws:sns:us-west-2:528107429540:PGrds"
],
"TreatMissingData": "missing"
}
},
"PsqlServerRO": {
"Type": "AWS::EC2::Instance",
"Condition": "ConditionsDeployRO",
"Metadata": {
"AWS::CloudFormation::Authentication": {
"S3AccessCreds": {
"type": "S3",
"roleName": "EC2_S3_Role",
"buckets": [
"cf-pg-configs",
"cf-pg-backups"
]
}
},
"AWS::CloudFormation::Init": {
"configSets": {
"InstallAndRun": [
"Install"
],
"Configs": [
"configFiles",
"restartPG"
]
},
"Install": {
"packages": {
"yum": {
"htop": []
}
},
"commands": {
"00_command": {
"command": "/sbin/modprobe zfs"
},
"01_command": {
"command": "./backup_scripts/zpool-nvme.sh"
},
"02_command": {
"command": "zfs set compression=lz4 pgtank && zfs set atime=off pgtank && zfs set relatime=on pgtank && zfs set xattr=sa pgtank && zfs set recordsize=128K pgtank && zfs set primarycache=all pgtank"
},
"03_command": {
"command": "zfs create pgtank/db"
},
"06_command": {
"command": "mkdir /pgtank/db/postgres"
},
"07_command": {
"command": "chown postgres:postgres /pgtank/db/postgres"
},
"08_command": {
"command": "WALG_S3_PREFIX=s3://cf-pg-backups/$BUCKUP_FOLDER wal-g backup-fetch /pgtank/db/postgres LATEST",
"env": {
"BUCKUP_FOLDER": {
"Ref": "AWS::StackName"
}
}
},
"09_command": {
"command": "aws s3 cp s3://cf-pg-configs/ro/${INSTANCE_TYPE_RO}.conf /pgtank/db/postgres/postgresql.conf && chown postgres:postgres /pgtank/db/postgres/postgresql.conf",
"env": {
"INSTANCE_TYPE_RO": {"Ref": "InstanceTypeRO"},
"AWS_DEFAULT_REGION": {"Ref": "AWS::Region"}
}
}
,
"10_command": {
"command": "echo \"restore_command = 'WALG_S3_PREFIX=s3://cf-pg-backups/$BUCKUP_FOLDER wal-g wal-fetch \"%f\" \"%p\"'\" >> /pgtank/db/postgres/postgresql.conf",
"env": {
"BUCKUP_FOLDER": {
"Ref": "AWS::StackName"
}
}
},
"11_command": {
"command": "touch /pgtank/db/postgres/standby.signal"
},
"12_command": {
"command": "echo \"primary_conninfo = 'host=$MASTER_IP port=5432 user=repuser password=$DB_PASS'\" >> /pgtank/db/postgres/postgresql.conf",
"env": {
"BUCKUP_FOLDER": {
"Ref": "AWS::StackName"
},
"MASTER_IP": {
"Fn::GetAtt": [
"PsqlServer",
"PrivateIp"
]
},
"DB_PASS": {
"Ref": "DBPassword"
}
}
},
"13_command": {
"command": "chown -R postgres:postgres /pgtank/db/postgres/"
},
"14_command": {
"command": "echo vm.nr_hugepages=$PAGE_N | tee -a /etc/sysctl.conf",
"env": {
"PAGE_N": {
"Fn::FindInMap": [
"HugePages",
{
"Ref": "InstanceTypeRW"
},
"nPages"
]
}
}
},
"15_command":{
"command": "sysctl -p /etc/sysctl.conf"
},
"16_command": {
"command": {
"Fn::Join": [
"",
[
"sudo hostnamectl set-hostname ",
{
"Ref": "AWS::StackName"
},
"-ro.myapp.local"
]
]
}
}
},
"services": {
"sysvinit": {
"cfn-hup": {
"enabled": "true",
"ensureRunning": "true",
"files": [
"/etc/cfn/cfn-hup.conf",
"/etc/cfn/hooks.d/cfn-auto-reloader.conf"
]
}
}
},
"files": {
"/etc/cfn/cfn-hup.conf": {
"content": {
"Fn::Join": [
"",
[
"[main]\n",
"stack=",
{
"Ref": "AWS::StackId"
},
"\n",
"region=",
{
"Ref": "AWS::Region"
},
"\n",
"verbose=true\n",
"interval=5\n"
]
]
},
"mode": "000400",
"owner": "root",
"group": "root"
},
"/etc/cfn/hooks.d/cfn-auto-reloader.conf": {
"content": {
"Fn::Join": [
"",
[
"[cfn-auto-reloader-hook]\n",
"triggers=post.update\n",
"path=Resources.PsqlServerRO.Metadata.AWS::CloudFormation::Init\n",
"action=/opt/aws/bin/cfn-init -v ",
" --stack ",
{
"Ref": "AWS::StackName"
},
" --resource PsqlServerRO ",
" --configsets Configs ",
" --region ",
{
"Ref": "AWS::Region"
},
"\n",
"runas=root\n"
]
]
},
"mode": "000400",
"owner": "root",
"group": "root"
},
"/backup_scripts/zpool-nvme.sh": {
"content": {
"Fn::Join": [
"",
[
"#!/bin/bash\n",
"declare -a DRIVE_NAMES\n",
"while IFS= read -r line; do\n",
" drive=$(echo \"$line\" | awk '{print $1}' | sed 's|/dev/||')\n",
" DRIVE_NAMES+=(\"$drive\")\n",
"done < <(sudo nvme list | grep \"NVMe Instance Storage\")\n",
"if [ ${#DRIVE_NAMES[@]} -eq 0 ]; then\n",
" echo \"No NVMe instance storage drives found.\"\n",
" exit 1\n",
"fi\n",
"DRIVE_LIST=\"\"\n",
"for drive in \"${DRIVE_NAMES[@]}\"; do\n",
" DRIVE_LIST+=\"$drive \"\n",
"done\n",
"DRIVE_LIST=$(echo $DRIVE_LIST | xargs)\n",
"sudo zpool create -o ashift=9 pgtank $DRIVE_LIST\n",
"echo \"ZFS pool 'pgtank' created with drives: $DRIVE_LIST\"\n"
]
]
},
"mode": "000700",
"owner": "root",
"group": "root"
}
}
},
"configFiles": {
"services": {
"systemd": {
"postgresql": {
"enabled": "true",
"ensureRunning": "true"
}
}
},
"files": {
"/pgtank/db/postgres/pg_hba.conf": {
"mode": "000755",
"owner": "postgres",
"group": "postgres",
"content": {
"Fn::Join": [
"",
[
"local all all trust\n",
"host all all 127.0.0.1/32 trust\n",
"host all all 0.0.0.0/0 scram-sha-256\n",
"host all all ::1/128 trust\n",
"local replication all trust\n",
"host replication all 127.0.0.1/32 trust\n",
"host replication all ::1/128 trust\n"
]
]
}
},
"/usr/lib/systemd/system/postgresql.service": {
"content": {
"Fn::Join": [
"",
[
"[Unit]\n",
"Description=PostgreSQL database server\n",
"After=network.target\n",
"\n",
"[Service]\n",
"Type=notify\n",
"\n",
"User=postgres\n",
"Group=postgres\n",
"\n",
"# Where to send early-startup messages from the server (before the logging\n",
"# options of postgresql.conf take effect)\n",
"# This is normally controlled by the global default set by systemd\n",
"# StandardOutput=syslog\n",
"\n",
"# Disable OOM kill on the postmaster\n",
"OOMScoreAdjust=-1000\n",
"# ... but allow it still to be effective for child processes\n",
"# (note that these settings are ignored by Postgres releases before 9.5)\n",
"Environment=PG_OOM_ADJUST_FILE=/proc/self/oom_score_adj\n",
"Environment=PG_OOM_ADJUST_VALUE=0\n",
"\n",
"Environment=PGDATA=/pgtank/db/postgres\n",
"\n",
"ExecStartPre=/usr/libexec/postgresql-check-db-dir %N\n",
"# Even though the $PGDATA variable is exported (postmaster would accept that)\n",
"# use the -D option here so PGDATA content is printed by /bin/ps and by\n",
"# 'systemctl status'.\n",
"ExecStart=/usr/bin/postmaster -D ${PGDATA}\n",
"ExecReload=/bin/kill -HUP $MAINPID\n",
"KillMode=mixed\n",
"KillSignal=SIGINT\n",
"\n",
"# No artificial start/stop timeout.\n",
"TimeoutSec=0\n",
"\n",
"[Install]\n",
"WantedBy=multi-user.target\n"
]
]
}
}
}
},
"restartPG": {
"commands": {
"01_command": {
"command": "systemctl restart postgresql"
}
}
}
}
},
"Properties": {
"IamInstanceProfile": {