backup_configs

backup_configs.sh

#!/bin/sh

## This simple script is copying configuration files and directories
## from your server to your private Git repository. make sure that the
## Git repository is private and under your control.
##
## Put your directory and file names into /etc/backup_configs and run
## the script. It will create a local Git working directory, copy
## files into it, and push the update to your Git repository.
##
## It uses two branches: the one named after your hostname contains
## copies of configuration files, and the branch "addresses" contains
## a mapping between the host names and public IP addresses.



REPO=git@MYPRIVATEGITHOST:backup_configs
BRANCH=`hostname -f`
MYHOST=`hostname -f`
CFG=/etc/backup_configs
LIBDIR=/var/lib/backup_configs
CONFIGSDIR=${LIBDIR}/configs

ADDRESSESDIR=${LIBDIR}/addresses
ADDRBRANCH=addresses

if [ ! -r ${CFG} ]; then
    echo Cannot read ${CFG} 1>&2
    exit 1
fi

if [ ! -d ${CONFIGSDIR} ]; then
    mkdir -p ${CONFIGSDIR}
    if [ $? != 0 ]; then
        echo Error creating ${CONFIGSDIR} 1>&2
        exit 1
    fi
    cd ${CONFIGSDIR}
    git init
    git config --local user.name backup_configs
    git config --local user.email root@${MYHOST}
    git checkout -b ${BRANCH}
    git remote add origin ${REPO}
fi

for src in `cat ${CFG}`; do
    cp -a --parents ${src} ${CONFIGSDIR}
    if [ $? != 0 ]; then
        echo Error copying ${src} 1>&2
        exit 1
    fi
done

cd ${CONFIGSDIR}
git add --all
git commit -m `date --iso-8601=seconds --utc`
git push -u origin ${BRANCH}
if [ $? != 0 ]; then
    echo Error pushing to git repo 1>&2
    exit 1
fi

MYADDR=`curl -4 --silent https://ifconfig.co`
if [ x${MYADDR} != x ]; then

    if [ ! -d ${ADDRESSESDIR} ]; then
        mkdir -p ${ADDRESSESDIR}
        if [ $? != 0 ]; then
            echo Error creating ${ADDRESSESDIR} 1>&2
            exit 1
        fi
        cd ${ADDRESSESDIR}
        git init
        git config --local user.name backup_configs
        git config --local user.email root@${MYHOST}
        git checkout -b ${ADDRBRANCH}
        git remote add origin ${REPO}
    fi

    cd ${ADDRESSESDIR}
    git pull
    echo ${MYHOST} > ${MYADDR}
    echo ${MYADDR} > ${MYHOST}
    git add --all
    git commit -m `date --iso-8601=seconds --utc`
    git push -u origin ${ADDRBRANCH}
    if [ $? != 0 ]; then
        echo Error pushing to git repo 1>&2
        exit 1
    fi
fi