# How to install OpenStack Zed on Rocky Linux 9.1 - Using DevStack

Let see how to deploy OpenStack Zen on Rocky Linux 9.1

This time, I will try to use [DevStack](https://docs.openstack.org/devstack/latest/)

# Rocky Linux 9.1

Install Rocky Linux 9.1, minimal setup, using [DVD ISO](https://download.rockylinux.org/pub/rocky/9/isos/x86_64/Rocky-9.1-x86_64-dvd.iso)

I used a VirtualBox VM, 2 VCPU, 8GB RAM, 30 GB Storage, Bridged network (to ease operation from remote).

Make sure that root account allow remote login


# Create stack user on VM

    sudo useradd -s /bin/bash -d /opt/stack -m stack
    sudo chmod +x /opt/stack
    echo "stack ALL=(ALL) NOPASSWD: ALL" | sudo tee /etc/sudoers.d/stack
    sudo -u stack -i
    
# Prepare Environment

Be sure to be in en_US and UTF-8 (ie: /etc/environment)

    LANG=en_US.utf-8
	LC_ALL=en_US.utf-8

Disable selinux

    sudo setenforce 0
    
Make it permanent by editing /etc/sysconfig/selinux

    SELINUX=disabled
    
Reboot

    sudo reboot
    

# Connect to VM as stack user
    
    You should be connected as non root user, let's use stack account
    
# Prepare DevStack

    # Install git 
    sudo dnf install git -y
    
    # Download DevStack
    git clone https://opendev.org/openstack/devstack
    cd devstack
    # Go to Zed Stable
    git checkout stable/zed

# Configure DevStack

Create a configuration file on devstack folder.
You should specify VM IP, example 10.0.0.123

    [[local|localrc]]
    ADMIN_PASSWORD=secret
    DATABASE_PASSWORD=$ADMIN_PASSWORD
    RABBIT_PASSWORD=$ADMIN_PASSWORD
    SERVICE_PASSWORD=$ADMIN_PASSWORD
    HOST_IP=10.0.0.123

# Patch Zed DevStack

Back port change found in master

```
--- /opt/stack/devstack/functions-common.orig	2023-03-10 11:15:35.706271496 +0100
+++ /opt/stack/devstack/functions-common	2023-03-10 11:22:21.742556662 +0100
@@ -418,6 +418,9 @@
         os_RELEASE=${VERSION_ID}
         os_CODENAME="n/a"
         os_VENDOR=$(echo $NAME | tr -d '[:space:]')
+    elif [[ "${ID}${VERSION}" =~ "rocky9" ]]; then
+        os_VENDOR="Rocky"
+        os_RELEASE=${VERSION_ID}
     else
         _ensure_lsb_release
 
@@ -466,6 +469,7 @@
         "$os_VENDOR" =~ (AlmaLinux) || \
         "$os_VENDOR" =~ (Scientific) || \
         "$os_VENDOR" =~ (OracleServer) || \
+        "$os_VENDOR" =~ (Rocky) || \
         "$os_VENDOR" =~ (Virtuozzo) ]]; then
         # Drop the . release as we assume it's compatible
         # XXX re-evaluate when we get RHEL10
@@ -513,7 +517,7 @@
 
 
 # Determine if current distribution is a Fedora-based distribution
-# (Fedora, RHEL, CentOS, etc).
+# (Fedora, RHEL, CentOS, Rocky, etc).
 # is_fedora
 function is_fedora {
     if [[ -z "$os_VENDOR" ]]; then
@@ -523,6 +527,7 @@
     [ "$os_VENDOR" = "Fedora" ] || [ "$os_VENDOR" = "Red Hat" ] || \
         [ "$os_VENDOR" = "RedHatEnterpriseServer" ] || \
         [ "$os_VENDOR" = "RedHatEnterprise" ] || \
+        [ "$os_VENDOR" = "Rocky" ] || \
         [ "$os_VENDOR" = "CentOS" ] || [ "$os_VENDOR" = "CentOSStream" ] || \
         [ "$os_VENDOR" = "AlmaLinux" ] || \
         [ "$os_VENDOR" = "OracleServer" ] || [ "$os_VENDOR" = "Virtuozzo" ]
```
    
# Install OpenStack

Logged as stack user and under /opt/stack directory

    cd /opt/stack
    ./stack.sh