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build: systemd runs the panel on hosts instead of supervisor
The installer and the manual installation install four systemd units (webvirt-cloud, webvirt-novncd, webvirt-socketiod, webvirt-worker) that run as the web server's user with absolute paths and read /etc/default/webvirtcloud. gunicorn, socketiod and the worker stop with KillMode=mixed, so they wind down their own children. supervisor, its installer code and the contributed systemd files go; the README gets the update, rollback and a one-time move from supervisor, and the installer refuses to run over a supervisor install. Docker keeps runit; novncd's runit script is the one-line form of the others.
This commit is contained in:
catborise
parent
fbef55fe2d
commit
837c5468ec
13 changed files with 129 additions and 343 deletions
117
README.md
117
README.md
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@ -68,7 +68,7 @@ chmod 744 install.sh
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sudo ./install.sh
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```
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The installer writes the server's names and IPs to `ALLOWED_HOSTS`. Running it again keeps `settings.py`, the database, the secret key and the main nginx config, but replaces `/etc/nginx/conf.d/webvirtcloud.conf` and the supervisor config; back up your own lines in those two (TLS, `environment=`) first.
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The installer writes the server's names and IPs to `ALLOWED_HOSTS`. Running it again keeps `settings.py`, the database, the secret key and the main nginx config, but replaces `/etc/nginx/conf.d/webvirtcloud.conf` and the systemd units; back up your own lines in the nginx config (TLS) first. Put your own service settings in `/etc/default/webvirtcloud` or in drop-ins (`systemctl edit webvirt-cloud`), which a re-run keeps.
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### Docker
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@ -101,7 +101,7 @@ The virtualenv is created with `--system-site-packages`: `libvirt-python` and `p
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```bash
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# 1. System packages
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apt-get update && apt-get -y install git python3-venv python3-dev python3-lxml python3-libvirt libvirt-dev zlib1g-dev libxslt1-dev nginx supervisor libsasl2-modules gcc pkg-config python3-guestfs libsasl2-dev libldap2-dev libssl-dev
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apt-get update && apt-get -y install git python3-venv python3-dev python3-lxml python3-libvirt libvirt-dev zlib1g-dev libxslt1-dev nginx libsasl2-modules gcc pkg-config python3-guestfs libsasl2-dev libldap2-dev libssl-dev
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# 2. Code
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git clone https://github.com/retspen/webvirtcloud /srv/webvirtcloud
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@ -121,15 +121,16 @@ pip install -r conf/requirements.txt
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python3 manage.py migrate
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python3 manage.py collectstatic --noinput
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# 6. Supervisor (gunicorn, novncd and the job worker) and nginx
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cp conf/supervisor/webvirtcloud.conf /etc/supervisor/conf.d/
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# 6. systemd units (gunicorn, novncd, socketiod and the job worker) and nginx
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cp conf/systemd/webvirt-{cloud,novncd,socketiod,worker}.service /etc/systemd/system/
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cp conf/nginx/webvirtcloud.conf /etc/nginx/conf.d/
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rm -f /etc/nginx/sites-enabled/default
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# 7. Ownership, private files, start
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chown -R www-data:www-data /srv/webvirtcloud
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chmod 700 data && chmod 600 webvirtcloud/settings.py db.sqlite3
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systemctl restart nginx supervisor
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systemctl daemon-reload && systemctl enable --now webvirt-cloud webvirt-novncd webvirt-socketiod webvirt-worker
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nginx -t && systemctl restart nginx
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```
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#### RHEL / Rocky Linux / AlmaLinux / Oracle Linux 10
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@ -137,7 +138,7 @@ systemctl restart nginx supervisor
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```bash
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# 1. System packages
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dnf -y install epel-release
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dnf -y install git python3-devel libvirt-devel python3-libvirt python3-ldap python3-lxml cyrus-sasl-devel cyrus-sasl-md5 openldap-devel openssl-devel glibc gcc nginx supervisor python3-libguestfs iproute-tc
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dnf -y install git python3-devel libvirt-devel python3-libvirt python3-ldap python3-lxml cyrus-sasl-devel cyrus-sasl-md5 openldap-devel openssl-devel glibc gcc nginx python3-libguestfs iproute-tc
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# 2. Code
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git clone https://github.com/retspen/webvirtcloud /srv/webvirtcloud
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@ -157,8 +158,8 @@ pip install -r conf/requirements.txt
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python3 manage.py migrate
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python3 manage.py collectstatic --noinput
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# 6. Supervisor (gunicorn, novncd and the job worker, as nginx) and nginx
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sed 's/^user=.*/user=nginx/' conf/supervisor/webvirtcloud.conf > /etc/supervisord.d/webvirtcloud.ini
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# 6. systemd units (gunicorn, novncd, socketiod and the job worker, as nginx) and nginx
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for u in cloud novncd socketiod worker; do sed 's/^\(User\|Group\)=.*/\1=nginx/' conf/systemd/webvirt-$u.service > /etc/systemd/system/webvirt-$u.service; done
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cp conf/nginx/webvirtcloud.conf /etc/nginx/conf.d/
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# make sure the default server block in /etc/nginx/nginx.conf does not also listen on port 80
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@ -171,8 +172,8 @@ setsebool -P httpd_can_network_connect on 2>/dev/null || true
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firewall-cmd --add-service=http --permanent 2>/dev/null || true
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firewall-cmd --add-port=6080/tcp --permanent 2>/dev/null || true
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firewall-cmd --reload 2>/dev/null || true
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systemctl enable nginx supervisord
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nginx -t && systemctl restart nginx supervisord
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systemctl daemon-reload && systemctl enable --now webvirt-cloud webvirt-novncd webvirt-socketiod webvirt-worker
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systemctl enable nginx && nginx -t && systemctl restart nginx
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```
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#### openSUSE Leap 15.x / Tumbleweed, SLES 15
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@ -180,7 +181,6 @@ nginx -t && systemctl restart nginx supervisord
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```bash
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# 1. System packages (Python 3.11 stack)
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zypper --non-interactive install -y git hostname python311 python311-base python311-devel python311-pip python311-libvirt-python python311-lxml python311-ldap libvirt-devel openldap2-devel cyrus-sasl-devel libopenssl-devel gcc pkg-config nginx
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zypper --non-interactive install -y python3-supervisor || zypper --non-interactive install -y supervisor
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# 2. Code
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git clone https://github.com/retspen/webvirtcloud /srv/webvirtcloud
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@ -200,17 +200,15 @@ pip install -r conf/requirements.txt
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python3 manage.py migrate
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python3 manage.py collectstatic --noinput
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# 6. Supervisor (gunicorn, novncd and the job worker, as nginx) and nginx
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mkdir -p /etc/supervisord.d
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sed 's/^user=.*/user=nginx/' conf/supervisor/webvirtcloud.conf > /etc/supervisord.d/webvirtcloud.ini
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# make sure /etc/supervisord.conf has: [include] files = /etc/supervisord.d/*.ini
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# 6. systemd units (gunicorn, novncd, socketiod and the job worker, as nginx) and nginx
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for u in cloud novncd socketiod worker; do sed 's/^\(User\|Group\)=.*/\1=nginx/' conf/systemd/webvirt-$u.service > /etc/systemd/system/webvirt-$u.service; done
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cp conf/nginx/webvirtcloud.conf /etc/nginx/conf.d/
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# 7. Ownership, private files, start
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chown -R nginx:nginx /srv/webvirtcloud
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chmod 700 data && chmod 600 webvirtcloud/settings.py db.sqlite3
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systemctl enable nginx supervisord
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nginx -t && systemctl restart nginx supervisord
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systemctl daemon-reload && systemctl enable --now webvirt-cloud webvirt-novncd webvirt-socketiod webvirt-worker
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systemctl enable nginx && nginx -t && systemctl restart nginx
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```
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### First login
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@ -296,15 +294,15 @@ If libvirt warns `Host SMBIOS information is not available`, install `dmidecode`
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Where to set them:
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- **Docker:** the `environment:` list of `docker-compose.override.yml`; every process in the container gets it.
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- **Installer and manual installation:** edit `webvirtcloud/settings.py`, or put the same `environment=` line in `[program:webvirtcloud]`, `[program:novncd]` and `[program:webvirt-worker]` of the supervisor config (novncd and the worker read the database too; supervisor takes one `environment=` per program, so merge the worker's into its `WEBVIRTCLOUD_LOG_FILE` line) and export the variables before running `manage.py`.
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- **gunicorn** runs at most 8 workers (fewer on hosts with under 4 CPUs); to change it, set `GUNICORN_CMD_ARGS="--workers N"` in the `[program:webvirtcloud]` environment or in `docker-compose.override.yml`.
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- **Installer and manual installation:** edit `webvirtcloud/settings.py`, or put them in `/etc/default/webvirtcloud` (root, mode 600), one `NAME='value'` per line (single quotes: systemd and the shell then read the same value); all four services read it. Then `systemctl restart webvirt-cloud webvirt-novncd webvirt-socketiod webvirt-worker`, and load the file before running `manage.py`: `set -a; . /etc/default/webvirtcloud; set +a`.
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- **gunicorn** runs at most 8 workers (fewer on hosts with under 4 CPUs); to change it, set `GUNICORN_CMD_ARGS=--workers N` in a drop-in of `webvirt-cloud` (`systemctl edit webvirt-cloud`: `[Service]` and `Environment="GUNICORN_CMD_ARGS=--workers N"`) or in `docker-compose.override.yml`.
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### HTTPS and reverse proxy
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For a panel served over HTTPS:
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- set `WEBVIRTCLOUD_HTTPS=1`: session and CSRF cookies become HTTPS-only, HTTP is redirected to HTTPS (except `/datasource/`, which VMs fetch over HTTP), and HSTS is sent for one year;
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- add the HTTPS origin to `CSRF_TRUSTED_ORIGINS`, e.g. `environment=CSRF_TRUSTED_ORIGINS="https://wvc.example.com",WEBVIRTCLOUD_HTTPS="1"` in supervisor;
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- add the HTTPS origin to `CSRF_TRUSTED_ORIGINS`, e.g. `CSRF_TRUSTED_ORIGINS=https://wvc.example.com` and `WEBVIRTCLOUD_HTTPS=1` in `/etc/default/webvirtcloud`;
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- set the public noVNC port to the proxy's port (the bundled nginx config already proxies `/novncd/`): `WS_PUBLIC_PORT = 443` in `webvirtcloud/settings.py`, or `WS_PUBLIC_PORT=443` in `docker-compose.override.yml` for Docker;
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TLS can end at the bundled nginx or at a proxy in front of it; such a proxy must send `X-Forwarded-Proto: https`. Failed logins are counted per client address, which the bundled nginx passes in `X-Real-IP`. A proxy that replaces the bundled nginx must set `X-Real-IP` itself, and its address must be in `LOGIN_TRUSTED_PROXIES` in `settings.py`. With a proxy in front of the bundled nginx, configure nginx's `set_real_ip_from` / `real_ip_header` for that proxy, or all clients share its address.
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@ -393,7 +391,7 @@ Set `OTP_ENABLED = True` in `settings.py` to ask for a one-time code at login. I
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### Serial console
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A VM without graphics (no `<graphics>` device, a `<console type='pty'>`) opens a serial console (xterm.js) instead of VNC. It is off by default. To turn it on, set `WEBVIRTCLOUD_SERIAL_CONSOLE=1` (Docker: in `docker-compose.override.yml`, then `docker compose -p webvirtcloud up -d`) or `SERIAL_CONSOLE_ENABLED = True` in `settings.py` and restart socketiod.
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A VM without graphics (no `<graphics>` device, a `<console type='pty'>`) opens a serial console (xterm.js) instead of VNC. It is off by default. To turn it on, set `WEBVIRTCLOUD_SERIAL_CONSOLE=1` (Docker: in `docker-compose.override.yml`, then `docker compose -p webvirtcloud up -d`) or `SERIAL_CONSOLE_ENABLED = True` in `settings.py` and `systemctl restart webvirt-cloud webvirt-socketiod`.
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- The VM page's Settings → Console switches a shut-off VM between VNC and serial (Console type). A new VNC console takes the form's other fields; on a TCP or TLS compute it needs Listen on: All interfaces (only SSH computes reach a localhost console).
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- The guest must use its serial port: a login prompt needs `systemctl enable --now serial-getty@ttyS0`, boot messages need the kernel parameter `console=ttyS0,115200`. The console shows only what the guest writes after it opens; press Enter for a new prompt.
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@ -401,17 +399,6 @@ A VM without graphics (no `<graphics>` device, a `<console type='pty'>`) opens a
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- It accepts the console page's signed token, as noVNC does: whoever gets that token within 120 s gets the console, and an open console stays open after its user loses access to the VM.
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- One console per VM, at most 20 at a time; a second one shows "refused".
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### Running novncd with runit (Debian)
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Instead of Supervisor, `novncd` can run under `runit`. First set `autostart=false` for `[program:novncd]` in the supervisor config and run `sudo supervisorctl update`, so the two do not compete for the port:
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```bash
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sudo apt install -y runit runit-systemd
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sudo mkdir -p /etc/service/novncd/
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sudo ln -s /srv/webvirtcloud/conf/runit/novncd.sh /etc/service/novncd/run
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sudo systemctl start runit.service
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```
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## Updating
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Every update starts with a backup in its own directory (mode 700, named by date) that holds the database, the commit it was taken from and, for installer and manual installations, `settings.py` and the nginx config. The database is copied with SQLite's backup API, which also finishes a write interrupted by a crash. This covers sqlite only; with PostgreSQL (`WEBVIRTCLOUD_DB_HOST`), back up that database yourself before updating.
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@ -434,6 +421,19 @@ docker compose run --rm --no-deps -T --entrypoint /srv/webvirtcloud/venv/bin/pyt
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docker compose up -d
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```
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### Moving from supervisor to systemd
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Versions up to v3.0.0 ran the panel under supervisor. Once, before the update steps below, stop it there, keep its config and remove it:
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```bash
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supervisorctl stop webvirtcloud novncd socketiod webvirt-worker
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mv /etc/supervisor/conf.d/webvirtcloud.conf /root/webvirtcloud-supervisor.conf # Debian / Ubuntu
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mv /etc/supervisord.d/webvirtcloud.ini /root/webvirtcloud-supervisor.conf # RHEL / openSUSE
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supervisorctl update
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```
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Move the `environment=` values of that config into `/etc/default/webvirtcloud` (root, mode 600), one `NAME='value'` per line; leave out the worker's `WEBVIRTCLOUD_LOG_FILE`. Step 4 installs and starts the systemd units. Remove supervisor once nothing else uses it (on a compute node, gstfsd may).
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### Installer and manual installation
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`git pull` never overwrites `webvirtcloud/settings.py` or `/etc/nginx/conf.d/webvirtcloud.conf`; steps 2 and 4 bring them up to date. Run the steps from a root shell; they use `$b`, so in a new shell set it again to the backup directory.
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@ -441,31 +441,22 @@ docker compose up -d
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1. Stop the panel, back up and pull:
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```bash
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supervisorctl stop webvirtcloud novncd socketiod webvirt-worker
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systemctl stop webvirt-cloud webvirt-novncd webvirt-socketiod webvirt-worker
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# once: root may use the repo, which belongs to the service user
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git config --global --add safe.directory /srv/webvirtcloud
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b=/root/webvirtcloud-backup-$(date +%Y%m%d-%H%M%S)
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cd /srv/webvirtcloud &&
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! supervisorctl status webvirtcloud novncd socketiod webvirt-worker | grep RUNNING &&
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! systemctl is-active --quiet webvirt-cloud webvirt-novncd webvirt-socketiod webvirt-worker &&
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mkdir -m 700 "$b" &&
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venv/bin/python3 -c "import sqlite3,sys; sqlite3.connect('db.sqlite3').backup(sqlite3.connect(sys.argv[1]))" "$b/db.sqlite3" &&
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cp -p webvirtcloud/settings.py /etc/nginx/conf.d/webvirtcloud.conf "$b"/ &&
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{ [ ! -f /etc/default/webvirtcloud ] || cp -p /etc/default/webvirtcloud "$b"/; } &&
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git rev-parse HEAD > "$b/commit" &&
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git ls-files -z --others --exclude-standard -- '*/migrations/*.py' | tar --null -T - --remove-files -cf "$b/local-migrations.tar" &&
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git checkout -- static/css/wvc-main.min.css dev/scss/wvc-main.scss &&
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git checkout master && git pull
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```
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Until step 4 installs the worker, `supervisorctl` reports "no such process" for `webvirt-worker` on a first update from a version without it. Then keep the supervisor config for step 4 and the restore (`supervisor.conf` in the backup directory):
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```bash
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cp -p /etc/supervisor/conf.d/webvirtcloud.conf "$b/supervisor.conf" # Debian / Ubuntu
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```
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```bash
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cp -p /etc/supervisord.d/webvirtcloud.ini "$b/supervisor.conf" # RHEL / openSUSE
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```
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2. Rebuild `settings.py` from the template (the file keeps its owner and mode), then put back your own values; the `diff` lists them:
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```bash
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@ -491,31 +482,29 @@ docker compose up -d
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Installers from before September 2025 generated migrations of their own; step 1 moved them into `local-migrations.tar`. One of them has the name of a tracked migration, which `migrate` would skip; the second line marks it unapplied so that the tracked one runs.
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4. Update the nginx config the same way as `settings.py`, and the supervisor config (it gains the `webvirt-worker` program):
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4. Update the nginx config the same way as `settings.py`:
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```bash
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cp conf/nginx/webvirtcloud.conf /etc/nginx/conf.d/webvirtcloud.conf
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diff "$b/webvirtcloud.conf" /etc/nginx/conf.d/webvirtcloud.conf
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```
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Debian / Ubuntu:
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Put back your own lines (`server_name`, TLS, the noVNC port). Install the systemd units; your own service settings stay in `/etc/default/webvirtcloud` and in drop-ins. Debian / Ubuntu:
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```bash
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cp conf/supervisor/webvirtcloud.conf /etc/supervisor/conf.d/
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diff "$b/supervisor.conf" /etc/supervisor/conf.d/webvirtcloud.conf
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cp conf/systemd/webvirt-{cloud,novncd,socketiod,worker}.service /etc/systemd/system/
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```
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RHEL / openSUSE:
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```bash
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sed 's/^user=.*/user=nginx/' conf/supervisor/webvirtcloud.conf > /etc/supervisord.d/webvirtcloud.ini
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diff "$b/supervisor.conf" /etc/supervisord.d/webvirtcloud.ini
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for u in cloud novncd socketiod worker; do sed 's/^\(User\|Group\)=.*/\1=nginx/' conf/systemd/webvirt-$u.service > /etc/systemd/system/webvirt-$u.service; done
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```
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Put back your own lines (`server_name`, TLS, the noVNC port, supervisor `environment=` settings), then reload nginx and start the panel:
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Then reload nginx and start the panel:
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```bash
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nginx -t && systemctl reload nginx && supervisorctl update && supervisorctl start webvirtcloud novncd socketiod webvirt-worker
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nginx -t && systemctl reload nginx && systemctl daemon-reload && systemctl enable --now webvirt-cloud webvirt-novncd webvirt-socketiod webvirt-worker
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```
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Older versions collected static files into `static/`; `git clean -n static/` lists the leftovers, which can be deleted.
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@ -541,9 +530,9 @@ Installer and manual installation, from a root shell (`nginx:nginx` on RHEL / op
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```bash
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b=/root/webvirtcloud-backup-YYYYMMDD-HHMMSS
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supervisorctl stop webvirtcloud novncd socketiod webvirt-worker
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systemctl stop webvirt-cloud webvirt-novncd webvirt-socketiod webvirt-worker
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cd /srv/webvirtcloud &&
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! supervisorctl status webvirtcloud novncd socketiod webvirt-worker | grep RUNNING &&
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! systemctl is-active --quiet webvirt-cloud webvirt-novncd webvirt-socketiod webvirt-worker &&
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git checkout -- static/css/wvc-main.min.css dev/scss/wvc-main.scss &&
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git checkout "$(cat "$b/commit")" &&
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tar -xf "$b/local-migrations.tar" &&
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@ -556,26 +545,13 @@ chown -R www-data:www-data /srv/webvirtcloud &&
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chmod 600 db.sqlite3 webvirtcloud/settings.py
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```
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Restore the supervisor config, Debian / Ubuntu:
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Put back `/etc/default/webvirtcloud` if the backup has it (`cp -p "$b/webvirtcloud" /etc/default/`), then reload nginx and start the panel:
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```bash
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cp "$b/supervisor.conf" /etc/supervisor/conf.d/webvirtcloud.conf
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nginx -t && systemctl reload nginx && systemctl start webvirt-cloud webvirt-novncd webvirt-socketiod webvirt-worker
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```
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RHEL / openSUSE:
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```bash
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cp "$b/supervisor.conf" /etc/supervisord.d/webvirtcloud.ini
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```
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Then reload nginx and start the panel:
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```bash
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nginx -t && systemctl reload nginx &&
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supervisorctl update && supervisorctl start webvirtcloud novncd socketiod webvirt-worker
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```
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||||
When the restored version predates the worker, `supervisorctl` reports that `webvirt-worker` does not exist; the other programs start. A rollback leaves the clone on a detached HEAD at the restored commit; the update steps record that commit before they switch back to `master`.
|
||||
A version from before v3.0.0 has no worker: `systemctl disable --now webvirt-worker`. A rollback keeps the systemd units. A rollback leaves the clone on a detached HEAD at the restored commit; the update steps record that commit before they switch back to `master`.
|
||||
|
||||
### Behavior changes
|
||||
|
||||
|
|
@ -624,6 +600,7 @@ When the restored version predates the worker, `supervisorctl` reports that `web
|
|||
- Manual installs that keep their own `settings.py` copy the SQLite `OPTIONS` and `TEST` entries from `settings.py.template` and add `"operations"` to `INSTALLED_APPS`.
|
||||
- The SQLite database must be on a local file system (WAL).
|
||||
- Outside compose, stop the Docker container with `docker stop -t 95` so the worker can finish running jobs.
|
||||
- Installer and manual installations run the panel as systemd units (`webvirt-cloud`, `webvirt-novncd`, `webvirt-socketiod`, `webvirt-worker`) instead of supervisor; see [Moving from supervisor to systemd](#moving-from-supervisor-to-systemd). Service settings go into `/etc/default/webvirtcloud`, service output into the journal (`journalctl -u webvirt-cloud`); the app log stays in `data/`.
|
||||
|
||||
## Usage
|
||||
|
||||
|
|
|
|||
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