85 lines
2.3 KiB
Plaintext
85 lines
2.3 KiB
Plaintext
# ------------------------------------------
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# Moving LXC containers between host systems
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# ------------------------------------------
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lxc_name=d.mx.oopen.de
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lxc_base_dir_old_system="/data/lxc"
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lxc_base_dir_new_system="/data/lxc"
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new_host_system="o35.oopen.de"
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# ---
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# old host system
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# ---
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# Shutdown the container on old system
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#
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lxc-stop -n $lxc_name
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# Archive container (rootfs & config)
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#
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# Note!:
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# The --numeric-owner flag is very important! Without it, the container may not
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# boot because the uid/gids get mangled in the extracted filesystem.
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#
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# When tar creates an archive, it preserves user / group ownership information.
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# By default, when extracting, tar tries to resolve the archive user/group ownership
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# names with the ids on the system running tar. This is intended to ensure that user
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# ownership is resolved on the new system, in case the UID numeric values differ b
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# etween systems.
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#
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# This is bad for an LXC filesystem because the numeric uid/gid ownership is intended
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# to be preserved for the whole filesystem. If it gets resolved to a different value,
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# bad things happen.
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#
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cd "$lxc_base_dir_old_system"
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tar --numeric-owner -czvf $lxc_name_fs.tar.gz $lxc_name
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# Copy the created archive to your new server
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#
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rsync -avh $lxc_name_fs.tar.gz ${new_host_system}:${lxc_base_dir_new_system}/
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# ---
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# new host system
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# ---
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# Extract rootfs (including the lxc config file)
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#
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cd "${lxc_base_dir_new_system}"
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gunzip < $lxc_name_fs.tar.gz | tar --numeric-owner -xvf -
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# ---
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# Replace old ip-addresses with the new one
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# ---
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old_ipv4="83.223.86.92"
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new_ipv4="95.217.204.227"
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old_ipv6="2a01:30:0:13:254:9eff:fed5:e7fd"
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new_ipv6="2a01:4f9:4a:47e5::227"
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replace_base_dir="/data/lxc/d.mx/rootfs"
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replace_ip_files="
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${replace_base_dir}//etc/amavis/conf.d/50-user
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${replace_base_dir}//etc/ipt-firewall/interfaces_ipv4.conf
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${replace_base_dir}//etc/munin/munin-node.conf
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${replace_base_dir}//etc/postfix/main.cf
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${replace_base_dir}//etc/postfix/master.cf
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${replace_base_dir}//etc/spamassassin/local.cf
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${replace_base_dir}//usr/local/apache2/conf/extra/httpd-info.conf
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${replace_base_dir}//usr/local/apache2/conf/vhosts/*.conf
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"
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for _file in $replace_ip_files ; do
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if [[ -f "$_file" ]]; then
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perl -i -n -p -e "s/${old_ipv4}/${new_ipv4}/g" $_file
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perl -i -n -p -e "s/${old_ipv6}/${new_ipv6}/g" $_file
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fi
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done
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