Merge pull request #104 from nkashiv/nginx-agent-install
Add NGINX Agent install scriptpull/105/head
Nishant Kashiv
GitHub
commit
cf27313cdd
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@ -0,0 +1,591 @@
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#!/bin/sh
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#
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# NGINX Agent install script
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#
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# Copyright (C) Nginx, Inc. 2021.
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#
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# Description:
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# NGINX Agent install script for downloading the appropriate NGINX Agent package
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# from the package repository and installing the agent to work with amplify
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# Usage:
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# API_KEY=<api-key> sh install-nginx-agent.sh [-y]
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#
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# args:
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# API_KEY - unique API key assigned to your Amplify account
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packages_url="https://packages.nginx.org/nginx-agent"
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package_name="nginx-agent"
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public_key_url="https://nginx.org/keys/nginx_signing.key"
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public_key_path="/usr/share/keyrings/nginx-archive-keyring.gpg"
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agent_conf_path="/etc/nginx-agent"
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agent_conf_file="${agent_conf_path}/nginx-agent.conf"
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converter_hostname="receiver-grpc.amplify.nginx.com"
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grpc_port=443
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nginx_conf_file="/etc/nginx/nginx.conf"
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ignore_directives_array="ssl_certificate_key ssl_client_certificate ssl_password_file ssl_stapling_file ssl_trusted_certificate auth_basic_user_file secure_link_secret"
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# Constants
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readonly OS_RHEL="rhel"
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readonly OS_CENTOS="centos"
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readonly OS_LINUX="linux"
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readonly OS_AMAZON="amzn"
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readonly OS_UBUNTU="ubuntu"
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readonly OS_DEBIAN="debian"
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readonly OS_ORACLE="ol"
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readonly FLAVOR_RHEL="red hat linux"
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readonly FLAVOR_ROCKY="rocky"
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readonly FLAVOR_ALMALINUX="almalinux"
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readonly FLAVOR_AMAZON="amazon linux"
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# Get OS and CPU Architecture information
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get_os_and_arch_name () {
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centos_flavor="centos"
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# Use lsb_release if possible
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if command -V lsb_release > /dev/null 2>&1; then
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os=$(lsb_release -is | tr '[:upper:]' '[:lower:]')
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codename=$(lsb_release -cs | tr '[:upper:]' '[:lower:]')
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release=$(lsb_release -rs | sed 's/\..*$//')
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case "$os" in
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redhatenterprise|redhatenterpriseserver|oracleserver)
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os=$OS_RHEL
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centos_flavor=$FLAVOR_RHEL
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;;
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esac
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# Otherwise it's getting a little bit more tricky
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else
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if ! ls /etc/*-release > /dev/null 2>&1; then
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os=$(uname -s | \
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tr '[:upper:]' '[:lower:]')
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elif cat /etc/*-release | grep '^ID="almalinux"' > /dev/null 2>&1; then
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os=$OS_CENTOS
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centos_flavor=$FLAVOR_ALMALINUX
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elif cat /etc/*-release | grep '^ID="rocky"' > /dev/null 2>&1; then
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os=$OS_CENTOS
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centos_flavor=$FLAVOR_ROCKY
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else
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os=$(cat /etc/*-release | grep '^ID=' | \
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sed 's/^ID=["]*\([a-zA-Z]*\).*$/\1/' | \
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tr '[:upper:]' '[:lower:]')
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if [ -z "$os" ]; then
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if grep -i "oracle linux" /etc/*-release > /dev/null 2>&1 || \
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grep -i "red hat" /etc/*-release > /dev/null 2>&1; then
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os=$OS_RHEL
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elif grep -i "centos" /etc/*-release > /dev/null 2>&1; then
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os=$OS_CENTOS
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else
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os=$OS_LINUX
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fi
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fi
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fi
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case "$os" in
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"$OS_UBUNTU")
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codename=$(cat /etc/*-release | grep '^DISTRIB_CODENAME' | \
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sed 's/^[^=]*=\([^=]*\)/\1/' | \
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tr '[:upper:]' '[:lower:]')
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;;
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"$OS_DEBIAN")
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codename=$(cat /etc/*-release | grep '^VERSION=' | \
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sed 's/.*(\(.*\)).*/\1/' | \
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tr '[:upper:]' '[:lower:]')
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;;
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"$OS_CENTOS")
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codename=$(cat /etc/*-release | grep -i 'almalinux\|rocky\|centos.*(' | \
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sed 's/.*(\(.*\)).*/\1/' | head -1 | \
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tr '[:upper:]' '[:lower:]')
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# For CentOS grab release
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release=$(cat /etc/*-release | grep -i '^version_id=' | cut -d '"' -f 2 | cut -c 1)
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;;
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"$OS_RHEL"|"$OS_ORACLE")
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codename=$(cat /etc/*-release | grep -i 'red hat.*(' | \
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sed 's/.*(\(.*\)).*/\1/' | head -1 | \
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tr '[:upper:]' '[:lower:]')
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# For Red Hat also grab release
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release=$(cat /etc/*-release | grep -i 'red hat.*[0-9]' | \
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sed 's/^[^0-9]*\([0-9][0-9]*\).*$/\1/' | head -1)
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if [ -z "$release" ]; then
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release=$(cat /etc/*-release | grep -i '^VERSION_ID=' | \
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sed 's/^[^0-9]*\([0-9][0-9]*\).*$/\1/' | head -1)
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fi
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os=$OS_CENTOS
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centos_flavor=$FLAVOR_RHEL
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;;
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"$OS_AMAZON")
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codename="amazon-linux-ami"
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amzn=$(rpm --eval "%{amzn}")
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if [ "${amzn}" = 1 ]; then
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release="latest"
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else
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release=${amzn}
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fi
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os=$OS_AMAZON
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centos_flavor=$FLAVOR_AMAZON
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;;
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*)
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codename=""
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release=""
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;;
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esac
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fi
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arch=$(uname -m | tr '[:upper:]' '[:lower:]')
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case "$os" in
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"$OS_UBUNTU"| "$OS_DEBIAN")
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if [ "$arch" = "x86_64" ]; then
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arch="amd64"
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elif [ "$arch" = "aarch64" ]; then
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arch="arm64"
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fi
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;;
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*)
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if [ "$arch" = "amd64" ]; then
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arch="x86_64"
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elif [ "$arch" = "arm64" ]; then
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arch="aarch64"
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fi
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;;
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esac
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}
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# Install prerequisite packages (Ubuntu/Debian)
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install_prerequisites_deb() {
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keyring_package="ubuntu-keyring"
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if [ "$os" = "$OS_DEBIAN" ]; then
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keyring_package="debian-archive-keyring"
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fi
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# Install prerequisite packages if not found
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if ! dpkg -s curl gnupg2 ca-certificates lsb-release "${keyring_package}" > /dev/null 2>&1; then
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printf "\033[32m ${step}. Installing prerequisites ...\033[0m"
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test -n "$update_cmd" && \
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test -n "$install_cmd" && \
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${sudo_cmd} apt-get update > /dev/null 2>&1 && \
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${sudo_cmd} apt-get -y install curl gnupg2 ca-certificates lsb-release "${keyring_package}" > /dev/null 2>&1
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if [ $? -eq 0 ]; then
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printf "\033[32m done.\033[0m\n"
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else
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printf "\033[31m failed.\033[0m\n\n"
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exit 1
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fi
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incr_step
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fi
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}
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# Install prerequisite packages (yum - CentOS/RHEL/Amazon/Oracle)
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install_prerequisites_rpm() {
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prerequisites="yum-utils"
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if [ "$os" = "$OS_AMAZON" ]; then
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prerequisites="${prerequisites} procps"
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fi
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# Install prerequisite packages if not found
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if ! yum list installed "${prerequisites}" > /dev/null 2>&1; then
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printf "\033[32m ${step}. Installing prerequisites ...\033[0m"
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test -n "$update_cmd" && \
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test -n "$install_cmd" && \
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${sudo_cmd} ${update_cmd} > /dev/null 2>&1 && \
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${sudo_cmd} ${install_cmd} yum-utils > /dev/null 2>&1
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if [ $? -eq 0 ]; then
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printf "\033[32m done.\033[0m\n"
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else
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printf "\033[31m failed.\033[0m\n\n"
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exit 1
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fi
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incr_step
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fi
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}
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# Check what downloader is available
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check_downloader() {
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if command -V curl > /dev/null 2>&1; then
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downloader="curl"
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downloader_opts="-fs -L"
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elif command -V wget > /dev/null 2>&1; then
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downloader="wget"
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downloader_opts="-q"
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else
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printf "\033[31m no curl or wget found, exiting.\033[0m\n\n"
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exit 1
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fi
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}
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# Add public key for package verification (Ubuntu/Debian)
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add_public_key_deb() {
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printf "\033[32m ${step}. Adding public key ...\033[0m"
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check_downloader && \
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${downloader} ${downloader_opts} ${public_key_url} | gpg --dearmor \
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| ${sudo_cmd} tee ${public_key_path} > /dev/null 2>&1
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if [ $? -ne 0 ]; then
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printf "\033[31m failed.\033[0m\n\n"
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exit 1
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else
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printf "\033[32m done.\033[0m\n"
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fi
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}
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# Add repo configuration (apt - Ubuntu/Debian)
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add_repo_deb () {
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printf "\033[32m ${step}. Adding repository ...\033[0m"
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test -d /etc/apt/sources.list.d && \
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${sudo_cmd} test -w /etc/apt/sources.list.d && \
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${sudo_cmd} rm -f /etc/apt/sources.list.d/nginx-agent.list && \
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echo "deb [signed-by=${public_key_path}]" \
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"${packages_url}/${os}/ ${codename} agent" | \
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${sudo_cmd} tee /etc/apt/sources.list.d/nginx-agent.list > /dev/null 2>&1 && \
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${sudo_cmd} chmod 644 /etc/apt/sources.list.d/nginx-agent.list > /dev/null 2>&1
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if [ $? -eq 0 ]; then
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printf "\033[32m added.\033[0m\n"
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else
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printf "\033[31m failed.\033[0m\n\n"
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exit 1
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fi
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}
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# Add repo configuration (yum - CentOS/RHEL/Amazon/Oracle)
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add_repo_rpm () {
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printf "\033[32m ${step}. Adding repository config ...\033[0m"
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os_subpath=$os
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if [ "$os" = "$OS_AMAZON" ]; then
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os_subpath=amzn2
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fi
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test -d /etc/yum.repos.d && \
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${sudo_cmd} test -w /etc/yum.repos.d && \
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${sudo_cmd} rm -f /etc/yum.repos.d/nginx-amplify.repo && \
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printf "[nginx-agent]\nname=nginx agent repo\nbaseurl=${packages_url}/${os_subpath}/${release}/\$basearch\ngpgcheck=1\nenabled=1\ngpgkey=${public_key_url}\nmodule_hotfixes=true\n" | \
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${sudo_cmd} tee /etc/yum.repos.d/nginx-agent.repo > /dev/null 2>&1 && \
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${sudo_cmd} chmod 644 /etc/yum.repos.d/nginx-agent.repo > /dev/null 2>&1
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if [ $? -eq 0 ]; then
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printf "\033[32m added.\033[0m\n"
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else
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printf "\033[31m failed.\033[0m\n\n"
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exit 1
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fi
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}
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# Install package (either deb or rpm)
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install_deb_or_rpm() {
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# Update repo
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test -n "$update_cmd" && \
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${sudo_cmd} ${update_cmd}
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if [ $? -eq 0 ]; then
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printf "\033[32m\n ${step}. Updating repository ... done.\033[0m\n"
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else
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printf "\033[31m\n ${step}. Updating repository ... failed.\033[0m\n\n"
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printf "\033[32m Please check the list of the supported systems here https://docs.nginx.com/nginx-agent/technical-specifications\033[0m\n\n"
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exit 1
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fi
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incr_step
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test -n "$package_name" && \
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test -n "$install_cmd" && \
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${sudo_cmd} ${install_cmd} ${package_name}
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# Install package(s)
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if [ $? -eq 0 ]; then
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printf "\033[32m\n ${step}. Installing nginx-agent package ... done.\033[0m\n"
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else
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printf "\033[31m\n ${step}. Installing nginx-agent package ... failed.\033[0m\n\n"
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printf "\033[32m Please check the list of the supported systems here https://docs.nginx.com/nginx-agent/technical-specifications\033[0m\n\n"
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exit 1
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fi
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}
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incr_step() {
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step=$((step + 1))
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if [ "${step}" -lt 10 ]; then
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step=" ${step}"
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fi
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}
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#
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# Main
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#
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assume_yes=""
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errors=0
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for arg in "$@"; do
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case "$arg" in
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-y)
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assume_yes="-y"
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;;
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*)
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;;
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esac
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done
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step=" 1"
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printf "\n --- This script will install the NGINX Agent package ---\n\n"
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printf "\033[32m ${step}. Checking admin user ...\033[0m"
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sudo_found="no"
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sudo_cmd=""
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# Check if sudo is installed
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if command -V sudo > /dev/null 2>&1; then
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sudo_found="yes"
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sudo_cmd="sudo "
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fi
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# Detect root
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if [ "$(id -u)" = "0" ]; then
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printf "\033[32m root, ok.\033[0m\n"
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sudo_cmd=""
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elif [ "$sudo_found" = "yes" ]; then
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printf "\033[33m you'll need sudo rights.\033[0m\n"
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else
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printf "\033[31m not root, sudo not found, exiting.\033[0m\n"
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exit 1
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fi
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incr_step
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# Add API key
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printf "\033[32m ${step}. Checking API key ...\033[0m"
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if [ -n "$API_KEY" ]; then
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api_key=$API_KEY
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fi
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if [ -z "$api_key" ]; then
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printf "\033[31m What's your API key? Please check the docs and the UI.\033[0m\n\n"
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exit 1
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else
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printf "\033[32m using ${api_key}\033[0m\n"
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fi
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incr_step
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get_os_and_arch_name
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# Check for supported OS
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printf "\033[32m ${step}. Checking OS compatibility ...\033[0m"
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# install package
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case "$os" in
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"$OS_UBUNTU"|"$OS_DEBIAN")
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printf "\033[32m ${os} detected.\033[0m\n"
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# Install package
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update_cmd="apt-get ${assume_yes} update"
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install_cmd="apt-get ${assume_yes} install"
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install_prerequisites_deb
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incr_step
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add_public_key_deb
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incr_step
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add_repo_deb
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incr_step
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install_deb_or_rpm
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;;
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"$OS_CENTOS"|"$OS_RHEL"|"$OS_AMAZON")
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printf "\033[32m ${centos_flavor} detected.\033[0m\n"
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update_cmd="yum ${assume_yes} makecache"
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install_cmd="yum ${assume_yes} install"
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install_prerequisites_rpm
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incr_step
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add_repo_rpm
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incr_step
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# Check if nginx packages are excluded
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if grep 'exclude.*nginx' /etc/yum.conf | grep -v '#' >/dev/null 2>&1; then
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printf "\n"
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printf "\033[32m Packages with the 'nginx' names are excluded in /etc/yum.conf - proceed with install (y/n)? \033[0m"
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read -r answer
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printf "\n"
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if [ "${answer}" = "y" ] || [ "${answer}" = "Y" ]; then
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install_cmd="yum ${assume_yes} --disableexcludes=main install"
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else
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printf "\033[31m exiting.\033[0m\n"
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exit 1
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fi
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else
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install_cmd="yum ${assume_yes} install"
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fi
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install_deb_or_rpm
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;;
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|
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*)
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if [ -n "$os" ] && [ "$os" != "linux" ]; then
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printf "\033[31m $os is currently unsupported, apologies!\033[0m\n\n"
|
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printf "\033[32m Please check the list of the supported systems here https://docs.nginx.com/nginx-agent/technical-specifications\033[0m\n\n"
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else
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printf "\033[31m failed.\033[0m\n\n"
|
||||
fi
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exit 1
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||||
esac
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||||
incr_step
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|
||||
# Build config file from template
|
||||
printf "\033[32m ${step}. Building configuration file ...\033[0m"
|
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|
||||
if [ -f "${agent_conf_file}" ]; then
|
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${sudo_cmd} rm -f ${agent_conf_file}.old
|
||||
${sudo_cmd} cp -p ${agent_conf_file} ${agent_conf_file}.old
|
||||
fi
|
||||
|
||||
if command ${sudo_cmd} grep "server:" ${agent_conf_file} >/dev/null 2>&1; then
|
||||
${sudo_cmd} sh -c "sed -i -e 's|host:.*$|host: ${converter_hostname}|' \
|
||||
-e 's|grpcPort:.*$|grpcPort: ${grpc_port}|' \
|
||||
-e 's|token:.*$|token: \"${api_key}\"|' \
|
||||
${agent_conf_file}"
|
||||
else
|
||||
${sudo_cmd} printf "\nserver:\n token: \"${api_key}\"\n host: ${converter_hostname}\n grpcPort: ${grpc_port}\n" | \
|
||||
${sudo_cmd} tee -a ${agent_conf_file} > /dev/null 2>&1
|
||||
fi
|
||||
|
||||
if command ${sudo_cmd} grep "tls:" ${agent_conf_file} >/dev/null 2>&1; then
|
||||
${sudo_cmd} sh -c "sed -i -e 's|enable:.*$|enable: True|' \
|
||||
-e 's|skip_verify:.*$|skip_verify: False|' \
|
||||
${agent_conf_file}"
|
||||
else
|
||||
${sudo_cmd} printf "\ntls:\n enable: True\n skip_verify: False\n" | \
|
||||
${sudo_cmd} tee -a ${agent_conf_file} > /dev/null 2>&1
|
||||
fi
|
||||
|
||||
# Construct the ignore directives list
|
||||
ignore_directives_string=""
|
||||
|
||||
for ignore_directive in $ignore_directives_array; do
|
||||
ignore_directives_string="$ignore_directives_string\n - $ignore_directive"
|
||||
done
|
||||
|
||||
if command ${sudo_cmd} grep "ignore_directives:" ${agent_conf_file} >/dev/null 2>&1; then
|
||||
printf "\n Updating existing ignore_directives... \n"
|
||||
${sudo_cmd} sh -c "sed -i -e 's|ignore_directives:.*$|ignore_directives:${ignore_directives_string}|' \
|
||||
${agent_conf_file}"
|
||||
else
|
||||
printf "\n Adding ignore_directives... \n"
|
||||
${sudo_cmd} printf "ignore_directives:${ignore_directives_string}\n" | \
|
||||
${sudo_cmd} tee -a ${agent_conf_file} > /dev/null 2>&1
|
||||
fi
|
||||
|
||||
${sudo_cmd} chmod 644 ${agent_conf_file}
|
||||
|
||||
if [ $? -eq 0 ]; then
|
||||
printf "\033[32m done.\033[0m\n"
|
||||
else
|
||||
printf "\033[31m failed.\033[0m\n\n"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
incr_step
|
||||
|
||||
# Check nginx.conf for stub_status
|
||||
if [ -f "${nginx_conf_file}" ]; then
|
||||
nginx_conf_dir=$(echo ${nginx_conf_file} | sed 's/^\(.*\)\/[^/]*/\1/')
|
||||
|
||||
if [ -d "${nginx_conf_dir}" ]; then
|
||||
printf "\033[32m ${step}. Checking if stub_status is configured ...\033[0m"
|
||||
|
||||
if ${sudo_cmd} grep -R "stub_status" "${nginx_conf_dir}"/* > /dev/null 2>&1; then
|
||||
printf "\033[32m ok.\033[0m\n"
|
||||
else
|
||||
printf "\033[31m no stub_status in nginx config, please check https://docs.nginx.com/nginx-amplify/install-manage/configuring-agent/#configuring-the-url-for-stub_status-or-status-api\033[0m\n"
|
||||
errors=$((errors + 1))
|
||||
fi
|
||||
|
||||
incr_step
|
||||
fi
|
||||
fi
|
||||
|
||||
printf "\n"
|
||||
|
||||
# Finalize install
|
||||
if [ "$errors" -eq 0 ]; then
|
||||
printf "\033[32m OK, everything went just fine!\033[0m\n\n"
|
||||
else
|
||||
printf "\033[31m A few checks have failed - please read the warnings above!\033[0m\n\n"
|
||||
fi
|
||||
|
||||
start_cmd=""
|
||||
systemd_cmd=""
|
||||
if command -V service > /dev/null 2>&1; then
|
||||
systemd_cmd="service"
|
||||
start_cmd="service nginx-agent start"
|
||||
elif command -V systemctl > /dev/null 2>&1; then
|
||||
systemd_cmd="systemctl"
|
||||
start_cmd="systemctl start nginx-agent"
|
||||
else
|
||||
printf "\033[31m Could not find a way to start the nginx-agent service.\033[0m\n\n"
|
||||
fi
|
||||
|
||||
printf "\033[32m To start and stop the NGINX Agent type:\033[0m\n\n"
|
||||
|
||||
if [ "$systemd_cmd" = "service" ]; then
|
||||
printf " \033[7m${sudo_cmd} service nginx-agent { start | stop }\033[0m\n\n"
|
||||
elif [ "$systemd_cmd" = "systemctl" ]; then
|
||||
printf " \033[7m${sudo_cmd} systemctl { start | stop } nginx-agent\033[0m\n\n"
|
||||
else
|
||||
printf "\033[7m Please use the nginx-agent binary to start the agent.\033[0m\n\n"
|
||||
fi
|
||||
|
||||
printf "\033[32m Nginx Agent log can be found here:\033[0m\n"
|
||||
printf " /var/log/nginx-agent/agent.log\n\n"
|
||||
|
||||
printf "\033[32m After the agent is launched, it takes a couple of minutes for this system to appear\033[0m\n"
|
||||
printf "\033[32m in the Amplify user interface.\033[0m\n\n"
|
||||
|
||||
# Launch agent
|
||||
printf "\033[32m Launching nginx-agent ...\033[0m\n"
|
||||
|
||||
if [ -z "$start_cmd" ]; then
|
||||
printf "\n"
|
||||
printf "\033[31m Couldn't start the agent.\033[0m\n\n"
|
||||
exit 1
|
||||
else
|
||||
${sudo_cmd} ${start_cmd}
|
||||
if [ $? -eq 0 ]; then
|
||||
printf "\033[32m All done.\033[0m\n\n"
|
||||
else
|
||||
printf "\n"
|
||||
printf "\033[31m Couldn't start the agent, please check /var/log/nginx-agent/agent.log\033[0m\n\n"
|
||||
exit 1
|
||||
fi
|
||||
fi
|
||||
exit 0
|
||||
Loading…
Reference in New Issue