A simple video tutorial
OBS: ansible uses py, and py calls /bin/sh, NOT bash !
PRE-CONFIG
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suggested: use ssh-pub-key auth without passphrase.
INSTALL
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Optioanl: add ppa:ansible/ansible
installation:
sudo apt-get update && \
sudo apt-get install ansible
HOSTS
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vim /etc/ansible/hosts
master.ip.1
[slaves]
slave.domain1
slave.ip.addr.2
[slavesGroup2]
slave.domain2
slave.ip.addr.1
(see ref to give hosts’ names individually.)
SLAVE USERNAME
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sudo mkdir /etc/ansible/group_vars && \
sudo echo '---' > /etc/ansible/group_vars/all && \
sudo echo 'ansible_ssh_user: root' >> /etc/ansible/group_vars/all
(see DigitalOcean ref to config hosts individually.)
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Tested in Ubuntu 16.04 desktop Gnome+Unity in Vmware.
OBS: pure server will automatically start X in reboot and will lack of something, e.g. Default Terminal etc.
FIREWALL
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TCP port 5900+N (N is monitorId, starts from 1.)
TIGHT.VNC AS SERVER
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TightVnc allows us to start from a server without X11 and do everything in command line, remotely.
install (either already with or w/o desktop)
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sudo su: use root can avoid weird problems, see “ps”.
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nginx is a great alternative to apache2, it is better to handle static web pages and files. another one is lighttpd which is optimized for long-time keep-alive (a lot of connections).
Install in Ubuntu
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18.04 ~ 22.04 LTS
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sudo apt install -y software-properties-common && sudo add-apt-repository ppa:nginx/stable
sudo apt update && \
sudo apt install -y nginx nginx-extras && \
systemctl status nginx
ref: digitalocean
10.04 LTS
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sudo -s
apt-get install gcc g++;
wget http://downloads.sourceforge.net/pcre/pcre-8.10.tar.bz2 (seems hard-coded version in nginx v1.2; otherwise, such as me, ln -s xxx.so.xxx ...); tar xvjf ...; cd ...; ./configure; make; make install;
cd nginx; ./configure --without-http_gzip_module (do not need and do not want in experiments); make; make install;
/usr/local/nginx/conf# vim nginx.conf; keepalive_timeout 0\. #server_name non-local???
the second time when i started it, it could start work, not the first time. do not know why. try nginx; nginx -s stop; nginx.
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