Java in cloud

Main purpose is to have SSH tunel to my remote home network. Update root@OpenWrt:/tmp# wget http://downloads.openwrt.org/chaos_calmer/15.05.1/ar71xx/generic/openwrt-15.05.1-ar71xx-generic-tl-wr1043nd-v1-squashfs-sysupgrade.bin Connecting to downloads.openwrt.org (78.24.191.177:80) openwrt-15.05.1-ar71 100% root@OpenWrt:/tmp# ls -la -rw-r--r--    1 root     root       3473412 Feb 17 10:11 openwrt-15.05.1-ar71xx-generic-tl-wr1043nd-v1-squashfs-sysupgrade.bin root@OpenWrt:/tmp# md5sum openwrt-15.05.1-ar71xx-generic-tl-wr1043nd-v1-squashfs-sysupgrade.bin f5f073251dd3b191e9ed806cb95de029  openwrt-15.05.1-ar71xx-generic-tl-wr1043nd-v1-squashfs-sysupgrade.bin Unlocking firmware ... Writing from openwrt-15.05.1-ar71xx-generic-tl-wr1043nd-v1-squashfs-sysupgrade.bin to firmware ... Rebooting ... Turning router into access point I've edited network config file: config interface 'lan'         option ifname 'eth0.1'         option force_link '1'  

https://www.ssllabs.com/ssltest/analyze.html?d=bart.prokop.name The one domain that cannot get behind cloud flare... but still pretty secure.

OVH recently added IPv6 addresses for all their VPS hosts. Unfortunately they did not provided the instructions how to add IPv6 support for their Arch Linux distribution. Here is what have worked for me (highlighted are changes to default file value): # cd /etc/systemd/network # cp eth0-dhcp.network eth0-dhcp.network.ORIGINAL # cat eth0-dhcp.network [Match] Name=eth0 [Network] DHCP= ipv4 [DHCP] UseMTU=true [Address] A ddress=2001:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:1234 /64 [Route] Gateway= 2001 :xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:0001 # networkctl status et0 Please note that default OVH recommendation (i.e. /128 mask and static route to gateway) is not possible to achieve with systemd networking. That is why I went with /64 mask and simple Gateway option.

We need to create new "simple" systemd service. It is just a single text file. # pwd /etc/systemd/system Create file: whatever_you_want.service with similar content [Unit] Description=webserver Daemon [Service] ExecStart=/opt/jdk1.8.0_101/bin/java -Djava.security.egd=file:/dev/./urandom -jar /root/spring-boot-1.0-BETA.jar User=user [Install] WantedBy=multi-user.target That's really it!. Now you can use following commands to control newly created service. To start the service # systemctl start whatever_you_want.service To auto start the service # systemctl enable whatever_you_want.service [root@vps]# systemctl enable flex-demo Created symlink /etc/systemd/system/multi-user.target.wants/whatever_you_want.service → /etc/systemd/system/whatever_you_want.service. To stop autostart # systemctl disable whatever_you_want.service To stop the service # systemctl stop whatever_you_want.service To restart the service