====== Install Victoria Metrics ======
===== Install with delivered script =====

  * Redpeaks Cockpit deliver a script to install automatically victoria metrics.\\
  * Victoria metrics will be installed by default in **/opt/victoria**.\\
  * Run the install.sh script in victoria-metrics
  * Alternatively, you can download the latest package from [[https://github.com/VictoriaMetrics/VictoriaMetrics/releases|Victoria metrics repository]]
  * Look for package ''victoria-metrics-linux-amd64-vx.yy.zz.tar.gz''

===== Prepare VM files system =====

  * You need to prepare two file systems:
    * One for hosting database data
    * One for hosting database backups

===== Install manually =====

<code>
mkdir /YOUR_FOLDER/victoriametrics
nano /etc/systemd/system/victoriametrics.service
</code>

Content victoriametrics.service file : 

<code>
[Unit]
Description=Victoria Metrics
After=network.target

[Service]
Type=simple
StartLimitBurst=5
StartLimitInterval=0
Restart=on-failure
RestartSec=1
PIDFile=/YOUR_FOLDER/victoriametrics/victoriametrics.pid
ExecStart=/usr/local/bin/victoriametrics -storageDataPath /YOUR_FOLDER/victoriametrics-data -retentionPeriod 6 -graphiteListenAddr=:2003 -dedup.minScrapeInterval=1ms
ExecStop=/bin/kill -s SIGTERM $MAINPID

[Install]
WantedBy=multi-user.target
</code>

<code>
chmod 755 /etc/systemd/system/victoriametrics.service
mkdir /etc/systemd/system/victoriametrics.service.d
nano /etc/systemd/system/victoriametrics.service.d/ulimit.conf
</code>

Create the file ulimit.conf with following content : 

<code>
[Service]
LimitNOFILE=32000
LimitNPROC=32000
</code>

<code>
wget https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/v1.56.0/victoria-metrics-amd64-v1.56.0.tar.gz
tar -zxvf victoria-metrics-amd64-v1.56.0.tar.gz
cp -R victoria-metrics-prod /usr/local/bin/victoriametrics
systemctl enable victoriametrics
firewall-cmd --zone=public --add-port=2003/tcp --permanent
firewall-cmd --reload
systemctl start victoriametrics
</code>

====== Backups ======

  * To configure backups, we are going to use victoria metrics vmbackup utility.
  * Get the files:

  wget https://github.com/VictoriaMetrics/VictoriaMetrics/releases/download/v1.77.2/vmutils-amd64-v1.77.2.tar.gz
  tar -zxvf vmutils-amd64-v1.77.2.tar.gz

  * Create a script do_vm_backup.sh:

  #!/bin/sh
  vmbackup-prod -storageDataPath=[VM_DATA_FOLDER] -snapshot.createURL=http://localhost:8428/snapshot/create -dst=fs://[VM_BACKUP_FOLDER]

  * Change file permissions

  chmod 700 do_vm_backup.sh

  * Edit crontab  

  crontab -e
  0 */1 * * * /[PATH_TO_SCRIPT]/do_vm_backup.sh

  * The backup will now run once per hour 

===== Restore =====

  * To restore a backup, we are going to use the ''vmrestore'' utility:

  systemctl stop victoriametrics
  vmrestore-prod -src=fs:///[PATH_TO_BACKUPS]  -storageDataPath=[VM_DATA_FOLDER]
  systemctl start victoriametrics