cloud create lxc an git repository

gistfile1.sh

#!/bin/bash

# const
USAGE="[USAGE]
$ ./setup <username> <reponame> <ip>

[Requirement]
exec by root

[Example]
$ ./setup seri sandbox 167
=> craete 'seri/sandbox' git repository
=> create linux container that name is 'sandbox' and ip is '157.82.3.167'
"

NAME=$1
REPO=$2
IP=$3
L_NAME="$REPO$NAME"
LXC_USER_NAME="obana"

create_lxc() {
    sudo lxc-create -n $L_NAME -t ubuntu
    sudo cat "./interfaces" | awk  '{gsub(/<%=ip%>/, '${IP}'); gsub(/<%=name%>/, "'${L_NAME}'");print $0;}' | sudo tee "/var/lib/lxc/$L_NAME/rootfs/etc/network/interfaces"
    sudo lxc-start -n $L_NAME -d # error
    echo "[FINISH] --------- created lxc\n"
}

setup_lxc () {
    sleep 2
    lxc-attach -n "$L_NAME" -- apt-get update
    lxc-attach -n "$L_NAME" -- apt-get install -y apache2
    lxc-attach -n "$L_NAME" -- apt-get install -y git
    echo "[FINISH] --------- setup lxc\n"
}

create_and_copy_lxc_pubkey() {
    local pub_key_path="/home/gitadmin/gitolite-admin/keydir/$L_NAME.pub"

    lxc-attach -n "$L_NAME" -- mkdir -m 700 "/home/$LXC_USER_NAME/.ssh"
    cp /root/.ssh/config "/var/lib/lxc/$L_NAME/rootfs/home/$LXC_USER_NAME/.ssh/config"
    cp /root/.ssh/id_rsa.pub "/var/lib/lxc/$L_NAME/rootfs/home/$LXC_USER_NAME/.ssh/authorized_keys"
    cat /home/git/.ssh/id_rsa.pub >> "/var/lib/lxc/$L_NAME/rootfs/home/$LXC_USER_NAME/.ssh/authorized_keys"

    lxc-attach -n "$L_NAME" -- chown -R "$LXC_USER_NAME:$LXC_USER_NAME" "/home/$LXC_USER_NAME/.ssh"
    ssh [email protected].$IP "ssh-keygen -t rsa -N '' -f /home/$LXC_USER_NAME/.ssh/id_rsa"

    lxc-attach -n "$L_NAME" -- cat "/home/$LXC_USER_NAME/.ssh/id_rsa.pub" > "$pub_key_path"
    chmod 700 "$pub_key_path"
    chown gitadmin:gitadmin "$pub_key_path"

    echo "[FINISH] --------- create and copy lxc pub key\n"
}

create_git_repository() {
    local new_line="repo    $NAME/$REPO
      RW+     =   gitadmin
      RW      =   @developers
      R       =   @all"

    echo "$new_line" >> "/home/gitadmin/gitolite-admin/conf/gitolite.conf"

    pushd /home/gitadmin/gitolite-admin/
    git add .
    git commit -m "[new repo] created $NAME/$REPO"
    su - gitadmin -c "cd gitolite-admin; git push origin master"
    popd
    echo "[FINISH] --------- create git repository\n"
}


create_post_hook() {
    local bash_script="#!/bin/sh
ssh [email protected].$IP \"cd /home/$LXC_USER_NAME/$REPO; git pull\""

    local git_dir="/home/git/repositories/$NAME/$REPO.git/"
    local post_hook_path="$git_dir/hooks/post-receive"

    for i in $(seq 1 3); do
        if [[ -d  "$git_dir" ]]; then
            break
        fi
        sleep 3
    done

    echo "$bash_script" > "$post_hook_path"
    chmod 700 "$post_hook_path"
    chown git:git "$post_hook_path"
    echo "[FINISH] --------- create post hook\n"
}

clone_repo() {
    local path="[email protected]:$NAME/$REPO.git"
    ssh [email protected].$IP "git clone $path /home/$LXC_USER_NAME/$REPO"
    echo "[FINISH] --------- clone repo\n"
}

restart_apache() {
    sudo cat "./apache.conf" | awk  '{gsub(/<%=lxc%>/, "'${LXC_USER_NAME}'");gsub(/<%=repo%>/, "'${REPO}'");print $0;}' | sudo tee "/var/lib/lxc/$L_NAME/rootfs/etc/apache2/sites-enabled/000-default.conf"
    lxc-attach -n "$L_NAME" -- service apache2 restart
}

main() {
    if [[ $# > 2 ]]; then
        create_lxc
        setup_lxc
        create_and_copy_lxc_pubkey

        create_git_repository
        create_post_hook

        clone_repo
        restart_apache
        exit 0
    else
        printf "$USAGE"
        exit 1
    fi
}

main "$@"