Added Zabbix Proxy MySQ: based on RHEL image

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root 2020-07-14 21:21:29 +03:00
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build.sh

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FROM registry.access.redhat.com/ubi8/ubi
MAINTAINER Alexey Pustovalov <alexey.pustovalov@zabbix.com>
ARG MAJOR_VERSION=5.0
ARG RELEASE=2
ARG ZBX_VERSION=${MAJOR_VERSION}.2
ARG ZBX_SOURCES=https://git.zabbix.com/scm/zbx/zabbix.git
ENV TERM=xterm ZBX_VERSION=${ZBX_VERSION} ZBX_SOURCES=${ZBX_SOURCES} \
MIBDIRS=/usr/share/snmp/mibs:/var/lib/zabbix/mibs MIBS=+ALL
ENV TINI_VERSION=v0.19.0
LABEL name="zabbix/zabbix-proxy-mysql-50" \
maintainer="alexey.pustovalov@zabbix.com" \
vendor="Zabbix LLC" \
version="${MAJOR_VERSION}" \
release="${RELEASE}" \
summary="Zabbix proxy (MySQL)" \
description="Zabbix proxy with MySQL database support" \
url="https://www.zabbix.com/" \
run="docker run --name zabbix-proxy --link mysql-server:mysql-server -p 10051:10051 -d registry.connect.redhat.com/zabbix/zabbix-proxy-mysql-50:${ZBX_VERSION}" \
io.k8s.description="Zabbix proxy with MySQL database support" \
io.k8s.display-name="Zabbix proxy (MySQL)" \
io.openshift.expose-services="10051:10051" \
io.openshift.tags="zabbix,zabbix-proxy,mysql" \
org.label-schema.name="zabbix-proxy-mysql-rhel" \
org.label-schema.vendor="Zabbix LLC" \
org.label-schema.url="https://zabbix.com/" \
org.label-schema.description="Zabbix proxy with MySQL database support" \
org.label-schema.vcs-ref="${VCS_REF}" \
org.label-schema.build-date="${BUILD_DATE}" \
org.label-schema.schema-version="1.0" \
org.label-schema.license="GPL v2.0" \
org.label-schema.usage="https://www.zabbix.com/documentation/${MAJOR_VERSION}/manual/installation/containers" \
org.label-schema.version="${ZBX_VERSION}" \
org.label-schema.vcs-url="${ZBX_SOURCES}" \
org.label-schema.docker.cmd="docker run --name zabbix-proxy --link mysql-server:mysql-server -p 10051:10051 -d registry.connect.redhat.com/zabbix/zabbix-proxy-mysql-50:${ZBX_VERSION}"
STOPSIGNAL SIGTERM
COPY ["licenses", "/licenses"]
RUN set -eux && INSTALL_PKGS="bash \
fping \
iputils \
libcurl \
libevent \
openldap \
libssh \
libxml2 \
mariadb \
net-snmp-agent-libs \
OpenIPMI-libs \
pcre \
unixODBC" && \
dnf -y install --disableplugin=subscription-manager --disablerepo "*" \
https://repo.zabbix.com/zabbix/${MAJOR_VERSION}/rhel/8/x86_64/zabbix-release-${MAJOR_VERSION}-1.el8.noarch.rpm && \
REPOLIST="rhel-8-for-x86_64-baseos-rpms,rhel-8-for-x86_64-appstream-rpms,zabbix-non-supported" && \
dnf -y update-minimal --disablerepo "*" --enablerepo ubi-8-baseos --setopt=tsflags=nodocs \
--security --sec-severity=Important --sec-severity=Critical && \
dnf -y install --disablerepo "*" --enablerepo "${REPOLIST}" --setopt=install_weak_deps=False --best \
--setopt=tsflags=nodocs ${INSTALL_PKGS} && \
groupadd -g 1995 --system zabbix && \
adduser -r --shell /sbin/nologin \
-g zabbix -G root \
-d /var/lib/zabbix/ -u 1997 \
zabbix && \
mkdir -p /etc/zabbix && \
mkdir -p /var/lib/zabbix && \
mkdir -p /var/lib/zabbix/enc && \
mkdir -p /usr/lib/zabbix/externalscripts && \
mkdir -p /var/lib/zabbix/mibs && \
mkdir -p /var/lib/zabbix/modules && \
mkdir -p /var/lib/zabbix/snmptraps && \
mkdir -p /var/lib/zabbix/ssh_keys && \
mkdir -p /var/lib/zabbix/ssl && \
mkdir -p /var/lib/zabbix/ssl/certs && \
mkdir -p /var/lib/zabbix/ssl/keys && \
mkdir -p /var/lib/zabbix/ssl/ssl_ca && \
mkdir -p /usr/share/doc/zabbix-proxy-mysql && \
curl -L "https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini" -o /sbin/tini && \
curl -L "https://github.com/krallin/tini/releases/download/${TINI_VERSION}/tini.asc" -o /tmp/tini.asc && \
export GNUPGHOME="$(mktemp -d)" && \
for server in $(shuf -e ha.pool.sks-keyservers.net \
hkp://p80.pool.sks-keyservers.net:80 \
ipv4.pool.sks-keyservers.net \
keyserver.ubuntu.com \
keyserver.pgp.com \
pgp.mit.edu) ; do \
gpg --keyserver "$server" --recv-keys 595E85A6B1B4779EA4DAAEC70B588DFF0527A9B7 && break || : ; \
done && \
gpg --batch --verify /tmp/tini.asc /sbin/tini && \
rm -r "$GNUPGHOME" /tmp/tini.asc && \
chmod +x /sbin/tini && \
dnf -y clean all && \
rm -rf /var/cache/yum /var/lib/yum/yumdb/* /usr/lib/udev/hwdb.d/* && \
rm -rf /var/cache/dnf /etc/udev/hwdb.bin /root/.pki
RUN set -eux && INSTALL_PKGS="autoconf \
automake \
libcurl-devel \
libevent-devel \
libssh-devel \
libxml2-devel \
mariadb-connector-c-devel \
net-snmp-devel \
openldap-devel \
pcre-devel \
git \
gcc \
make \
unixODBC-devel" && \
REPOLIST="rhel-8-for-x86_64-baseos-rpms,rhel-8-for-x86_64-appstream-rpms,zabbix-non-supported" && \
dnf -y install --disablerepo "*" --enablerepo "${REPOLIST}" --setopt=install_weak_deps=False --best \
--setopt=tsflags=nodocs ${INSTALL_PKGS} && \
cd /tmp/ && \
git clone ${ZBX_SOURCES} --branch ${ZBX_VERSION} --depth 1 --single-branch zabbix-${ZBX_VERSION} && \
cd /tmp/zabbix-${ZBX_VERSION} && \
zabbix_revision=`git rev-parse --short HEAD` && \
sed -i "s/{ZABBIX_REVISION}/$zabbix_revision/g" include/version.h && \
./bootstrap.sh && \
export CFLAGS="-fPIC -pie -Wl,-z,relro -Wl,-z,now" && \
./configure \
--datadir=/usr/lib \
--libdir=/usr/lib/zabbix \
--sysconfdir=/etc/zabbix \
--prefix=/usr \
--enable-agent \
--enable-proxy \
--with-mysql \
--with-ldap \
--with-libcurl \
--with-libxml2 \
--with-net-snmp \
# --with-openipmi \
--with-openssl \
--with-ssh \
--with-unixodbc \
--enable-ipv6 \
--silent && \
make -j"$(nproc)" -s dbschema && \
make -j"$(nproc)" -s && \
cp src/zabbix_proxy/zabbix_proxy /usr/sbin/zabbix_proxy && \
cp src/zabbix_get/zabbix_get /usr/bin/zabbix_get && \
cp src/zabbix_sender/zabbix_sender /usr/bin/zabbix_sender && \
cp conf/zabbix_proxy.conf /etc/zabbix/zabbix_proxy.conf && \
cat database/mysql/schema.sql > database/mysql/create.sql && \
gzip database/mysql/create.sql && \
cp database/mysql/create.sql.gz /usr/share/doc/zabbix-proxy-mysql/ && \
cd /tmp/ && \
rm -rf /tmp/zabbix-${ZBX_VERSION}/ && \
dnf -y history undo `dnf history list last -q | sed -n 3p |column -t | cut -d' ' -f1` && \
dnf -y clean all && \
chown --quiet -R zabbix:root /etc/zabbix/ /var/lib/zabbix/ && \
chgrp -R 0 /etc/zabbix/ /var/lib/zabbix/ && \
chmod -R g=u /etc/zabbix/ /var/lib/zabbix/ && \
rm -rf /var/cache/yum /var/lib/yum/yumdb/* /usr/lib/udev/hwdb.d/* && \
rm -rf /var/cache/dnf /etc/udev/hwdb.bin /root/.pki
EXPOSE 10051/TCP
WORKDIR /var/lib/zabbix
VOLUME ["/var/lib/zabbix/snmptraps"]
COPY ["docker-entrypoint.sh", "/usr/bin/"]
ENTRYPOINT ["/sbin/tini", "--", "/usr/bin/docker-entrypoint.sh"]
USER 1997
CMD ["/usr/sbin/zabbix_proxy", "--foreground", "-c", "/etc/zabbix/zabbix_proxy.conf"]

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![logo](https://assets.zabbix.com/img/logo/zabbix_logo_500x131.png)
# What is Zabbix?
Zabbix is an enterprise-class open source distributed monitoring solution.
Zabbix is software that monitors numerous parameters of a network and the health and integrity of servers. Zabbix uses a flexible notification mechanism that allows users to configure e-mail based alerts for virtually any event. This allows a fast reaction to server problems. Zabbix offers excellent reporting and data visualisation features based on the stored data. This makes Zabbix ideal for capacity planning.
For more information and related downloads for Zabbix components, please visit https://hub.docker.com/u/zabbix/ and https://zabbix.com
# What is Zabbix proxy?
Zabbix proxy is a process that may collect monitoring data from one or more monitored devices and send the information to the Zabbix server, essentially working on behalf of the server. All collected data is buffered locally and then transferred to the Zabbix server the proxy belongs to.
# Zabbix proxy images
These are the only official Zabbix proxy Docker images. They are based on Alpine Linux v3.9, Ubuntu 18.04 (bionic) and CentOS 7 images. The available versions of Zabbix proxy are:
Zabbix proxy 3.0 (tags: alpine-3.0-latest, ubuntu-3.0-latest, centos-3.0-latest)
Zabbix proxy 3.0.* (tags: alpine-3.0.*, ubuntu-3.0.*, centos-3.0.*)
Zabbix proxy 3.2 (tags: alpine-3.2-latest, ubuntu-3.2-latest, centos-3.2-latest)
Zabbix proxy 3.2.* (tags: alpine-3.2.*, ubuntu-3.2.*, centos-3.2.*)
Zabbix proxy 3.4 (tags: alpine-3.4-latest, ubuntu-3.4-latest, centos-3.4-latest)
Zabbix proxy 3.4.* (tags: alpine-3.4.*, ubuntu-3.4.*, centos-3.4.*)
Zabbix proxy 4.0 (tags: alpine-4.0-latest, ubuntu-4.0-latest, centos-4.0-latest)
Zabbix proxy 4.0.* (tags: alpine-4.0.*, ubuntu-4.0.*, centos-4.0.*)
Zabbix proxy 4.2 (tags: alpine-4.2-latest, ubuntu-4.2-latest, centos-4.2-latest)
Zabbix proxy 4.2.* (tags: alpine-4.2.*, ubuntu-4.2.*, centos-4.2.*)
Zabbix proxy 4.4 (tags: alpine-4.4-latest, ubuntu-4.4-latest, centos-4.4-latest, alpine-latest, ubuntu-latest, centos-latest, latest)
Zabbix proxy 4.4.* (tags: alpine-4.4.*, ubuntu-4.4.*, centos-4.4.*)
Zabbix proxy 5.0 (tags: alpine-trunk, ubuntu-trunk, centos-trunk)
Images are updated when new releases are published. The image with ``latest`` tag is based on Alpine Linux.
The image uses MySQL database to store collected data before sending it to Zabbix server. It uses the next procedure to start:
- Checking database availability
- If ``MYSQL_ROOT_PASSWORD`` or ``MYSQL_ALLOW_EMPTY_PASSWORD`` are specified, the instance tries to create ``MYSQL_USER`` user with ``MYSQL_PASSWORD`` to use these credentials then for Zabbix server.
- Checking of having `MYSQL_DATABASE` database. Creating `MYSQL_DATABASE` database name if it does not exist
- Checking of having `dbversion` table. Creating Zabbix proxy database schema if no `dbversion` table
# How to use this image
## Start `zabbix-proxy-mysql`
Start a Zabbix proxy container as follows:
docker run --name some-zabbix-proxy-mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER="some-user" -e MYSQL_PASSWORD="some-password" -e ZBX_HOSTNAME=some-hostname -e ZBX_SERVER_HOST=some-zabbix-server -d zabbix/zabbix-proxy-mysql:tag
Where `some-zabbix-proxy-mysql` is the name you want to assign to your container, `some-mysql-server` is IP or DNS name of MySQL server, `some-user` is user to connect to Zabbix database on MySQL server, `some-password` is the password to connect to MySQL server, `some-hostname` is the hostname, it is Hostname parameter in Zabbix proxy configuration file, `some-zabbix-server` is IP or DNS name of Zabbix server and `tag` is the tag specifying the version you want. See the list above for relevant tags, or look at the [full list of tags](https://hub.docker.com/r/zabbix/zabbix-proxy-mysql/tags/).
## Connects from Zabbix server (Passive proxy)
This image exposes the standard Zabbix proxy port (10051) and can operate as Passive proxy in case `ZBX_PROXYMODE` = `1`. Start Zabbix server container like this in order to link it to the Zabbix proxy container:
```console
$ docker run --name some-zabbix-server --link some-zabbix-proxy-mysql:zabbix-proxy-mysql -d zabbix/zabbix-server:latest
```
## Connect to Zabbix server (Active proxy)
This image can operate as Active proxy (`default` mode). Start your application container like this in order to link Zabbix proxy to Zabbix server containters:
```console
$ docker run --name some-zabbix-proxy-mysql --link some-zabbix-server:zabbix-server -d zabbix/zabbix-proxy-mysql:latest
```
## Container shell access and viewing Zabbix proxy logs
The `docker exec` command allows you to run commands inside a Docker container. The following command line will give you a bash shell inside your `zabbix-proxy-mysql` container:
```console
$ docker exec -ti some-zabbix-proxy-mysql /bin/bash
```
The Zabbix proxy log is available through Docker's container log:
```console
$ docker logs some-zabbix-proxy-mysql
```
## Environment Variables
When you start the `zabbix-proxy-mysql` image, you can adjust the configuration of the Zabbix proxy by passing one or more environment variables on the `docker run` command line.
### `ZBX_PROXYMODE`
The variable allows to switch Zabbix proxy mode. Bu default, value is `0` - active proxy. Allowed values are `0` - active proxy and `1` - passive proxy.
### `ZBX_HOSTNAME`
This variable is unique, case sensitive hostname. By default, value is `zabbix-proxy-mysql` of the container. It is ``Hostname`` parameter in ``zabbix_proxy.conf``.
### `ZBX_SERVER_HOST`
This variable is IP or DNS name of Zabbix server or Zabbix proxy. By default, value is `zabbix-server`. It is ``Server`` parameter in ``zabbix_proxy.conf``. It is allowed to specify Zabbix server or Zabbix proxy port number using ``ZBX_SERVER_PORT`` variable. It make sense in case of non-default port for active checks.
### `ZBX_SERVER_PORT`
This variable is port Zabbix server listening on. By default, value is `10051`.
### `DB_SERVER_HOST`
This variable is IP or DNS name of MySQL server. By default, value is 'mysql-server'
### `DB_SERVER_PORT`
This variable is port of MySQL server. By default, value is '3306'.
### `MYSQL_USER`, `MYSQL_PASSWORD`, `MYSQL_USER_FILE`, `MYSQL_PASSWORD_FILE`
These variables are used by Zabbix proxy to connect to Zabbix database. With the `_FILE` variables you can instead provide the path to a file which contains the user / the password instead. Without Docker Swarm or Kubernetes you also have to map the files. Those are exclusive so you can just provide one type - either `MYSQL_USER` or `MYSQL_USER_FILE`!
```console
docker run --name some-zabbix-proxy-mysql -e DB_SERVER_HOST="some-mysql-server" -v ./.MYSQL_USER:/run/secrets/MYSQL_USER -e MYSQL_USER_FILE=/run/secrets/MYSQL_USER -v ./.MYSQL_PASSWORD:/run/secrets/MYSQL_PASSWORD -e MYSQL_PASSWORD_FILE=/var/run/secrets/MYSQL_PASSWORD -e ZBX_HOSTNAME=some-hostname -e ZBX_SERVER_HOST=some-zabbix-server -d zabbix/zabbix-proxy-mysql:tag
```
With Docker Swarm or Kubernetes this works with secrets. That way it is replicated in your cluster!
```console
printf "zabbix" | docker secret create MYSQL_USER -
printf "zabbix" | docker secret create MYSQL_PASSWORD -
docker run --name some-zabbix-proxy-mysql -e DB_SERVER_HOST="some-mysql-server" -e MYSQL_USER_FILE=/run/secrets/MYSQL_USER -e MYSQL_PASSWORD_FILE=/run/secrets/MYSQL_PASSWORD -e ZBX_SERVER_HOST="some-zabbix-server" -e ZBX_HOSTNAME=some-hostname -e ZBX_SERVER_HOST=some-zabbix-server -d zabbix/zabbix-proxy-mysql:tag
```
This method is also applicable for `MYSQL_ROOT_PASSWORD` with `MYSQL_ROOT_PASSWORD_FILE`.
By default, values for `MYSQL_USER` and `MYSQL_PASSWORD` are `zabbix`, `zabbix`.
### `MYSQL_DATABASE`
The variable is Zabbix database name. By default, value is `zabbix_proxy`.
### `ZBX_LOADMODULE`
The variable is list of comma separated loadable Zabbix modules. It works with volume ``/var/lib/zabbix/modules``. The syntax of the variable is ``dummy1.so,dummy2.so``.
### ``ZBX_DEBUGLEVEL``
The variable is used to specify debug level. By default, value is ``3``. It is ``DebugLevel`` parameter in ``zabbix_server.conf``. Allowed values are listed below:
- ``0`` - basic information about starting and stopping of Zabbix processes;
- ``1`` - critical information
- ``2`` - error information
- ``3`` - warnings
- ``4`` - for debugging (produces lots of information)
- ``5`` - extended debugging (produces even more information)
### `ZBX_TIMEOUT`
The variable is used to specify timeout for processing checks. By default, value is ``4``.
### `ZBX_JAVAGATEWAY_ENABLE`
The variable enable communication with Zabbix Java Gateway to collect Java related checks. By default, value is `false`.
### Other variables
Additionally the image allows to specify many other environment variables listed below:
```
ZBX_ENABLEREMOTECOMMANDS=0 # Available since 3.4.0
ZBX_LOGREMOTECOMMANDS=0 # Available since 3.4.0
ZBX_HOSTNAMEITEM=system.hostname
ZBX_SOURCEIP=
ZBX_PROXYLOCALBUFFER=0
ZBX_PROXYOFFLINEBUFFER=1
ZBX_PROXYHEARTBEATFREQUENCY=60
ZBX_CONFIGFREQUENCY=3600
ZBX_DATASENDERFREQUENCY=1
ZBX_STARTPOLLERS=5
ZBX_STARTPREPROCESSORS=3 # Available since 4.2.0
ZBX_IPMIPOLLERS=0
ZBX_STARTPOLLERSUNREACHABLE=1
ZBX_STARTTRAPPERS=5
ZBX_STARTPINGERS=1
ZBX_STARTDISCOVERERS=1
ZBX_STARTHTTPPOLLERS=1
ZBX_JAVAGATEWAY=zabbix-java-gateway
ZBX_JAVAGATEWAYPORT=10052
ZBX_STARTJAVAPOLLERS=0
ZBX_STATSALLOWEDIP= # Available since 4.0.5
ZBX_STARTVMWARECOLLECTORS=0
ZBX_VMWAREFREQUENCY=60
ZBX_VMWAREPERFFREQUENCY=60
ZBX_VMWARECACHESIZE=8M
ZBX_VMWARETIMEOUT=10
ZBX_ENABLE_SNMP_TRAPS=false
ZBX_LISTENIP=
ZBX_HOUSEKEEPINGFREQUENCY=1
ZBX_CACHESIZE=8M
ZBX_STARTDBSYNCERS=4
ZBX_HISTORYCACHESIZE=16M
ZBX_HISTORYINDEXCACHESIZE=4M
ZBX_TRAPPERIMEOUT=300
ZBX_UNREACHABLEPERIOD=45
ZBX_UNAVAILABLEDELAY=60
ZBX_UNREACHABLEDELAY=15
ZBX_LOGSLOWQUERIES=3000
ZBX_TLSCONNECT=unencrypted
ZBX_TLSACCEPT=unencrypted
ZBX_TLSCAFILE=
ZBX_TLSCRLFILE=
ZBX_TLSSERVERCERTISSUER=
ZBX_TLSSERVERCERTSUBJECT=
ZBX_TLSCERTFILE=
ZBX_TLSKEYFILE=
ZBX_TLSPSKIDENTITY=
ZBX_TLSPSKFILE=
```
Default values of these variables are specified after equal sign.
The allowed variables are identical of parameters in official ``zabbix_proxy.conf``. For example, ``ZBX_LOGSLOWQUERIES`` = ``LogSlowQueries``.
Please use official documentation for [``zabbix_proxy.conf``](https://www.zabbix.com/documentation/current/manual/appendix/config/zabbix_proxy) to get more information about the variables.
## Allowed volumes for the Zabbix proxy container
### ``/usr/lib/zabbix/externalscripts``
The volume is used by External checks (type of items). It is `ExternalScripts` parameter in ``zabbix_proxy.conf``.
### ``/var/lib/zabbix/modules``
The volume allows load additional modules and extend Zabbix proxy using ``LoadModule`` feature.
### ``/var/lib/zabbix/enc``
The volume is used to store TLS related files. These file names are specified using ``ZBX_TLSCAFILE``, ``ZBX_TLSCRLFILE``, ``ZBX_TLSKEY_FILE`` and ``ZBX_TLSPSKFILE`` variables.
### ``/var/lib/zabbix/ssh_keys``
The volume is used as location of public and private keys for SSH checks and actions. It is `SSHKeyLocation` parameter in ``zabbix_proxy.conf``.
### ``/var/lib/zabbix/ssl/certs``
The volume is used as location of of SSL client certificate files for client authentication. It is `SSLCertLocation` parameter in ``zabbix_proxy.conf``.
### ``/var/lib/zabbix/ssl/keys``
The volume is used as location of SSL private key files for client authentication. It is `SSLKeyLocation` parameter in ``zabbix_proxy.conf``.
### ``/var/lib/zabbix/ssl/ssl_ca``
The volume is used as location of certificate authority (CA) files for SSL server certificate verification. It is `SSLCALocation` parameter in ``zabbix_proxy.conf``.
### ``/var/lib/zabbix/snmptraps``
The volume is used as location of ``snmptraps.log`` file. It could be shared by ``zabbix-snmptraps`` container and inherited using `volumes_from` Docker option while creating new instance of Zabbix proxy.
SNMP traps processing feature could be enabled using shared volume and switched ``ZBX_ENABLE_SNMP_TRAPS`` environment variable to `true`.
### ``/var/lib/zabbix/mibs``
The volume allows to add new MIB files. It does not support subdirectories, all MIBs must be placed to ``/var/lib/zabbix/mibs``.
# The image variants
The `zabbix-proxy-mysql` images come in many flavors, each designed for a specific use case.
## `zabbix-proxy-mysql:ubuntu-<version>`
This is the defacto image. If you are unsure about what your needs are, you probably want to use this one. It is designed to be used both as a throw away container (mount your source code and start the container to start your app), as well as the base to build other images off of.
## `zabbix-proxy-mysql:alpine-<version>`
This image is based on the popular [Alpine Linux project](http://alpinelinux.org), available in [the `alpine` official image](https://hub.docker.com/_/alpine). Alpine Linux is much smaller than most distribution base images (~5MB), and thus leads to much slimmer images in general.
This variant is highly recommended when final image size being as small as possible is desired. The main caveat to note is that it does use [musl libc](http://www.musl-libc.org) instead of [glibc and friends](http://www.etalabs.net/compare_libcs.html), so certain software might run into issues depending on the depth of their libc requirements. However, most software doesn't have an issue with this, so this variant is usually a very safe choice. See [this Hacker News comment thread](https://news.ycombinator.com/item?id=10782897) for more discussion of the issues that might arise and some pro/con comparisons of using Alpine-based images.
To minimize image size, it's uncommon for additional related tools (such as `git` or `bash`) to be included in Alpine-based images. Using this image as a base, add the things you need in your own Dockerfile (see the [`alpine` image description](https://hub.docker.com/_/alpine/) for examples of how to install packages if you are unfamiliar).
# Supported Docker versions
This image is officially supported on Docker version 1.12.0.
Support for older versions (down to 1.6) is provided on a best-effort basis.
Please see [the Docker installation documentation](https://docs.docker.com/installation/) for details on how to upgrade your Docker daemon.
# User Feedback
## Documentation
Documentation for this image is stored in the [`proxy-mysql/` directory](https://github.com/zabbix/zabbix-docker/tree/3.0/proxy-mysql) of the [`zabbix/zabbix-docker` GitHub repo](https://github.com/zabbix/zabbix-docker/). Be sure to familiarize yourself with the [repository's `README.md` file](https://github.com/zabbix/zabbix-docker/blob/master/README.md) before attempting a pull request.
## Issues
If you have any problems with or questions about this image, please contact us through a [GitHub issue](https://github.com/zabbix/zabbix-docker/issues).
### Known issues
## Contributing
You are invited to contribute new features, fixes, or updates, large or small; we are always thrilled to receive pull requests, and do our best to process them as fast as we can.
Before you start to code, we recommend discussing your plans through a [GitHub issue](https://github.com/zabbix/zabbix-docker/issues), especially for more ambitious contributions. This gives other contributors a chance to point you in the right direction, give you feedback on your design, and help you find out if someone else is working on the same thing.

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#!/bin/bash
set -o pipefail
set +e
# Script trace mode
if [ "${DEBUG_MODE}" == "true" ]; then
set -o xtrace
fi
# Default Zabbix server host
: ${ZBX_SERVER_HOST:="zabbix-server"}
# Default Zabbix server port number
: ${ZBX_SERVER_PORT:="10051"}
# Default directories
# User 'zabbix' home directory
ZABBIX_USER_HOME_DIR="/var/lib/zabbix"
# Configuration files directory
ZABBIX_ETC_DIR="/etc/zabbix"
# usage: file_env VAR [DEFAULT]
# as example: file_env 'MYSQL_PASSWORD' 'zabbix'
# (will allow for "$MYSQL_PASSWORD_FILE" to fill in the value of "$MYSQL_PASSWORD" from a file)
# unsets the VAR_FILE afterwards and just leaving VAR
file_env() {
local var="$1"
local fileVar="${var}_FILE"
local defaultValue="${2:-}"
if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
echo "**** Both variables $var and $fileVar are set (but are exclusive)"
exit 1
fi
local val="$defaultValue"
if [ "${!var:-}" ]; then
val="${!var}"
echo "** Using ${var} variable from ENV"
elif [ "${!fileVar:-}" ]; then
if [ ! -f "${!fileVar}" ]; then
echo "**** Secret file \"${!fileVar}\" is not found"
exit 1
fi
val="$(< "${!fileVar}")"
echo "** Using ${var} variable from secret file"
fi
export "$var"="$val"
unset "$fileVar"
}
escape_spec_char() {
local var_value=$1
var_value="${var_value//\\/\\\\}"
var_value="${var_value//[$'\n']/}"
var_value="${var_value//\//\\/}"
var_value="${var_value//./\\.}"
var_value="${var_value//\*/\\*}"
var_value="${var_value//^/\\^}"
var_value="${var_value//\$/\\\$}"
var_value="${var_value//\&/\\\&}"
var_value="${var_value//\[/\\[}"
var_value="${var_value//\]/\\]}"
echo "$var_value"
}
update_config_var() {
local config_path=$1
local var_name=$2
local var_value=$3
local is_multiple=$4
if [ ! -f "$config_path" ]; then
echo "**** Configuration file '$config_path' does not exist"
return
fi
echo -n "** Updating '$config_path' parameter \"$var_name\": '$var_value'... "
# Remove configuration parameter definition in case of unset parameter value
if [ -z "$var_value" ]; then
sed -i -e "/^$var_name=/d" "$config_path"
echo "removed"
return
fi
# Remove value from configuration parameter in case of double quoted parameter value
if [ "$var_value" == '""' ]; then
sed -i -e "/^$var_name=/s/=.*/=/" "$config_path"
echo "undefined"
return
fi
# Use full path to a file for TLS related configuration parameters
if [[ $var_name =~ ^TLS.*File$ ]]; then
var_value=$ZABBIX_USER_HOME_DIR/enc/$var_value
fi
# Escaping characters in parameter value
var_value=$(escape_spec_char "$var_value")
if [ "$(grep -E "^$var_name=" $config_path)" ] && [ "$is_multiple" != "true" ]; then
sed -i -e "/^$var_name=/s/=.*/=$var_value/" "$config_path"
echo "updated"
elif [ "$(grep -Ec "^# $var_name=" $config_path)" -gt 1 ]; then
sed -i -e "/^[#;] $var_name=$/i\\$var_name=$var_value" "$config_path"
echo "added first occurrence"
else
sed -i -e "/^[#;] $var_name=/s/.*/&\n$var_name=$var_value/" "$config_path"
echo "added"
fi
}
update_config_multiple_var() {
local config_path=$1
local var_name=$2
local var_value=$3
var_value="${var_value%\"}"
var_value="${var_value#\"}"
local IFS=,
local OPT_LIST=($var_value)
for value in "${OPT_LIST[@]}"; do
update_config_var $config_path $var_name $value true
done
}
# Check prerequisites for MySQL database
check_variables_mysql() {
: ${DB_SERVER_HOST:="mysql-server"}
: ${DB_SERVER_PORT:="3306"}
USE_DB_ROOT_USER=false
CREATE_ZBX_DB_USER=false
file_env MYSQL_USER
file_env MYSQL_PASSWORD
file_env MYSQL_ROOT_PASSWORD
if [ ! -n "${MYSQL_USER}" ] && [ "${MYSQL_RANDOM_ROOT_PASSWORD}" == "true" ]; then
echo "**** Impossible to use MySQL server because of unknown Zabbix user and random 'root' password"
exit 1
fi
if [ ! -n "${MYSQL_USER}" ] && [ ! -n "${MYSQL_ROOT_PASSWORD}" ] && [ "${MYSQL_ALLOW_EMPTY_PASSWORD}" != "true" ]; then
echo "*** Impossible to use MySQL server because 'root' password is not defined and it is not empty"
exit 1
fi
if [ "${MYSQL_ALLOW_EMPTY_PASSWORD}" == "true" ] || [ -n "${MYSQL_ROOT_PASSWORD}" ]; then
USE_DB_ROOT_USER=true
DB_SERVER_ROOT_USER="root"
DB_SERVER_ROOT_PASS=${MYSQL_ROOT_PASSWORD:-""}
fi
[ -n "${MYSQL_USER}" ] && [ "${USE_DB_ROOT_USER}" == "true" ] && CREATE_ZBX_DB_USER=true
# If root password is not specified use provided credentials
DB_SERVER_ROOT_USER=${DB_SERVER_ROOT_USER:-${MYSQL_USER}}
[ "${MYSQL_ALLOW_EMPTY_PASSWORD}" == "true" ] || DB_SERVER_ROOT_PASS=${DB_SERVER_ROOT_PASS:-${MYSQL_PASSWORD}}
DB_SERVER_ZBX_USER=${MYSQL_USER:-"zabbix"}
DB_SERVER_ZBX_PASS=${MYSQL_PASSWORD:-"zabbix"}
DB_SERVER_DBNAME=${MYSQL_DATABASE:-"zabbix_proxy"}
}
check_db_connect_mysql() {
echo "********************"
echo "* DB_SERVER_HOST: ${DB_SERVER_HOST}"
echo "* DB_SERVER_PORT: ${DB_SERVER_PORT}"
echo "* DB_SERVER_DBNAME: ${DB_SERVER_DBNAME}"
if [ "${DEBUG_MODE}" == "true" ]; then
if [ "${USE_DB_ROOT_USER}" == "true" ]; then
echo "* DB_SERVER_ROOT_USER: ${DB_SERVER_ROOT_USER}"
echo "* DB_SERVER_ROOT_PASS: ${DB_SERVER_ROOT_PASS}"
fi
echo "* DB_SERVER_ZBX_USER: ${DB_SERVER_ZBX_USER}"
echo "* DB_SERVER_ZBX_PASS: ${DB_SERVER_ZBX_PASS}"
fi
echo "********************"
WAIT_TIMEOUT=5
while [ ! "$(mysqladmin ping -h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT} -u ${DB_SERVER_ROOT_USER} \
--password="${DB_SERVER_ROOT_PASS}" --silent --connect_timeout=10)" ]; do
echo "**** MySQL server is not available. Waiting $WAIT_TIMEOUT seconds..."
sleep $WAIT_TIMEOUT
done
}
mysql_query() {
query=$1
local result=""
result=$(mysql --silent --skip-column-names -h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT} \
-u ${DB_SERVER_ROOT_USER} --password="${DB_SERVER_ROOT_PASS}" -e "$query")
echo $result
}
create_db_user_mysql() {
[ "${CREATE_ZBX_DB_USER}" == "true" ] || return
echo "** Creating '${DB_SERVER_ZBX_USER}' user in MySQL database"
USER_EXISTS=$(mysql_query "SELECT 1 FROM mysql.user WHERE user = '${DB_SERVER_ZBX_USER}' AND host = '%'")
if [ -z "$USER_EXISTS" ]; then
mysql_query "CREATE USER '${DB_SERVER_ZBX_USER}'@'%' IDENTIFIED BY '${DB_SERVER_ZBX_PASS}'" 1>/dev/null
else
mysql_query "ALTER USER ${DB_SERVER_ZBX_USER} IDENTIFIED BY '${DB_SERVER_ZBX_PASS}';" 1>/dev/null
fi
mysql_query "GRANT ALL PRIVILEGES ON $DB_SERVER_DBNAME. * TO '${DB_SERVER_ZBX_USER}'@'%'" 1>/dev/null
}
create_db_database_mysql() {
DB_EXISTS=$(mysql_query "SELECT SCHEMA_NAME FROM information_schema.SCHEMATA WHERE SCHEMA_NAME='${DB_SERVER_DBNAME}'")
if [ -z ${DB_EXISTS} ]; then
echo "** Database '${DB_SERVER_DBNAME}' does not exist. Creating..."
mysql_query "CREATE DATABASE ${DB_SERVER_DBNAME} CHARACTER SET utf8 COLLATE utf8_bin" 1>/dev/null
# better solution?
mysql_query "GRANT ALL PRIVILEGES ON $DB_SERVER_DBNAME. * TO '${DB_SERVER_ZBX_USER}'@'%'" 1>/dev/null
else
echo "** Database '${DB_SERVER_DBNAME}' already exists. Please be careful with database COLLATE!"
fi
}
create_db_schema_mysql() {
DBVERSION_TABLE_EXISTS=$(mysql_query "SELECT 1 FROM information_schema.tables WHERE table_schema='${DB_SERVER_DBNAME}' and table_name = 'dbversion'")
if [ -n "${DBVERSION_TABLE_EXISTS}" ]; then
echo "** Table '${DB_SERVER_DBNAME}.dbversion' already exists."
ZBX_DB_VERSION=$(mysql_query "SELECT mandatory FROM ${DB_SERVER_DBNAME}.dbversion")
fi
if [ -z "${ZBX_DB_VERSION}" ]; then
echo "** Creating '${DB_SERVER_DBNAME}' schema in MySQL"
zcat /usr/share/doc/zabbix-proxy-mysql/create.sql.gz | mysql --silent --skip-column-names \
-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT} \
-u ${DB_SERVER_ROOT_USER} --password="${DB_SERVER_ROOT_PASS}" \
${DB_SERVER_DBNAME} 1>/dev/null
fi
}
update_zbx_config() {
echo "** Preparing Zabbix proxy configuration file"
ZBX_CONFIG=$ZABBIX_ETC_DIR/zabbix_proxy.conf
update_config_var $ZBX_CONFIG "ProxyMode" "${ZBX_PROXYMODE}"
update_config_var $ZBX_CONFIG "Server" "${ZBX_SERVER_HOST}"
update_config_var $ZBX_CONFIG "ServerPort" "${ZBX_SERVER_PORT}"
if [ -z "${ZBX_HOSTNAME}" ] && [ -n "${ZBX_HOSTNAMEITEM}" ]; then
update_config_var $ZBX_CONFIG "Hostname" ""
update_config_var $ZBX_CONFIG "HostnameItem" "${ZBX_HOSTNAMEITEM}"
else
update_config_var $ZBX_CONFIG "Hostname" "${ZBX_HOSTNAME:-"zabbix-proxy-mysql"}"
update_config_var $ZBX_CONFIG "HostnameItem" "${ZBX_HOSTNAMEITEM}"
fi
update_config_var $ZBX_CONFIG "ListenPort" "${ZBX_LISTENPORT}"
update_config_var $ZBX_CONFIG "SourceIP" "${ZBX_SOURCEIP}"
update_config_var $ZBX_CONFIG "LogType" "console"
update_config_var $ZBX_CONFIG "LogFile"
update_config_var $ZBX_CONFIG "LogFileSize"
update_config_var $ZBX_CONFIG "PidFile"
update_config_var $ZBX_CONFIG "DebugLevel" "${ZBX_DEBUGLEVEL}"
update_config_var $ZBX_CONFIG "EnableRemoteCommands" "${ZBX_ENABLEREMOTECOMMANDS}"
update_config_var $ZBX_CONFIG "LogRemoteCommands" "${ZBX_LOGREMOTECOMMANDS}"
update_config_var $ZBX_CONFIG "DBHost" "${DB_SERVER_HOST}"
update_config_var $ZBX_CONFIG "DBName" "${DB_SERVER_DBNAME}"
update_config_var $ZBX_CONFIG "DBSchema" "${DB_SERVER_SCHEMA}"
update_config_var $ZBX_CONFIG "DBUser" "${DB_SERVER_ZBX_USER}"
update_config_var $ZBX_CONFIG "DBPort" "${DB_SERVER_PORT}"
update_config_var $ZBX_CONFIG "DBPassword" "${DB_SERVER_ZBX_PASS}"
update_config_var $ZBX_CONFIG "DBSocket" "${DB_SERVER_SOCKET}"
update_config_var $ZBX_CONFIG "ProxyLocalBuffer" "${ZBX_PROXYLOCALBUFFER}"
update_config_var $ZBX_CONFIG "ProxyOfflineBuffer" "${ZBX_PROXYOFFLINEBUFFER}"
update_config_var $ZBX_CONFIG "HeartbeatFrequency" "${ZBX_PROXYHEARTBEATFREQUENCY}"
update_config_var $ZBX_CONFIG "ConfigFrequency" "${ZBX_CONFIGFREQUENCY}"
update_config_var $ZBX_CONFIG "DataSenderFrequency" "${ZBX_DATASENDERFREQUENCY}"
update_config_var $ZBX_CONFIG "StatsAllowedIP" "${ZBX_STATSALLOWEDIP}"
update_config_var $ZBX_CONFIG "StartPreprocessors" "${ZBX_STARTPREPROCESSORS}"
update_config_var $ZBX_CONFIG "StartPollers" "${ZBX_STARTPOLLERS}"
update_config_var $ZBX_CONFIG "StartIPMIPollers" "${ZBX_IPMIPOLLERS}"
update_config_var $ZBX_CONFIG "StartPollersUnreachable" "${ZBX_STARTPOLLERSUNREACHABLE}"
update_config_var $ZBX_CONFIG "StartTrappers" "${ZBX_STARTTRAPPERS}"
update_config_var $ZBX_CONFIG "StartPingers" "${ZBX_STARTPINGERS}"
update_config_var $ZBX_CONFIG "StartDiscoverers" "${ZBX_STARTDISCOVERERS}"
update_config_var $ZBX_CONFIG "StartHTTPPollers" "${ZBX_STARTHTTPPOLLERS}"
: ${ZBX_JAVAGATEWAY_ENABLE:="false"}
if [ "${ZBX_JAVAGATEWAY_ENABLE}" == "true" ]; then
update_config_var $ZBX_CONFIG "JavaGateway" "${ZBX_JAVAGATEWAY:-"zabbix-java-gateway"}"
update_config_var $ZBX_CONFIG "JavaGatewayPort" "${ZBX_JAVAGATEWAYPORT}"
update_config_var $ZBX_CONFIG "StartJavaPollers" "${ZBX_STARTJAVAPOLLERS:-"5"}"
else
update_config_var $ZBX_CONFIG "JavaGateway"
update_config_var $ZBX_CONFIG "JavaGatewayPort"
update_config_var $ZBX_CONFIG "StartJavaPollers"
fi
update_config_var $ZBX_CONFIG "StartVMwareCollectors" "${ZBX_STARTVMWARECOLLECTORS}"
update_config_var $ZBX_CONFIG "VMwareFrequency" "${ZBX_VMWAREFREQUENCY}"
update_config_var $ZBX_CONFIG "VMwarePerfFrequency" "${ZBX_VMWAREPERFFREQUENCY}"
update_config_var $ZBX_CONFIG "VMwareCacheSize" "${ZBX_VMWARECACHESIZE}"
update_config_var $ZBX_CONFIG "VMwareTimeout" "${ZBX_VMWARETIMEOUT}"
: ${ZBX_ENABLE_SNMP_TRAPS:="false"}
if [ "${ZBX_ENABLE_SNMP_TRAPS}" == "true" ]; then
update_config_var $ZBX_CONFIG "SNMPTrapperFile" "${ZABBIX_USER_HOME_DIR}/snmptraps/snmptraps.log"
update_config_var $ZBX_CONFIG "StartSNMPTrapper" "1"
else
update_config_var $ZBX_CONFIG "SNMPTrapperFile"
update_config_var $ZBX_CONFIG "StartSNMPTrapper"
fi
update_config_var $ZBX_CONFIG "HousekeepingFrequency" "${ZBX_HOUSEKEEPINGFREQUENCY}"
update_config_var $ZBX_CONFIG "CacheSize" "${ZBX_CACHESIZE}"
update_config_var $ZBX_CONFIG "StartDBSyncers" "${ZBX_STARTDBSYNCERS}"
update_config_var $ZBX_CONFIG "HistoryCacheSize" "${ZBX_HISTORYCACHESIZE}"
update_config_var $ZBX_CONFIG "HistoryIndexCacheSize" "${ZBX_HISTORYINDEXCACHESIZE}"
update_config_var $ZBX_CONFIG "Timeout" "${ZBX_TIMEOUT}"
update_config_var $ZBX_CONFIG "TrapperTimeout" "${ZBX_TRAPPERIMEOUT}"
update_config_var $ZBX_CONFIG "UnreachablePeriod" "${ZBX_UNREACHABLEPERIOD}"
update_config_var $ZBX_CONFIG "UnavailableDelay" "${ZBX_UNAVAILABLEDELAY}"
update_config_var $ZBX_CONFIG "UnreachableDelay" "${ZBX_UNREACHABLEDELAY}"
update_config_var $ZBX_CONFIG "AlertScriptsPath" "/usr/lib/zabbix/alertscripts"
update_config_var $ZBX_CONFIG "ExternalScripts" "/usr/lib/zabbix/externalscripts"
update_config_var $ZBX_CONFIG "FpingLocation" "/usr/sbin/fping"
update_config_var $ZBX_CONFIG "Fping6Location"
update_config_var $ZBX_CONFIG "SSHKeyLocation" "$ZABBIX_USER_HOME_DIR/ssh_keys"
update_config_var $ZBX_CONFIG "LogSlowQueries" "${ZBX_LOGSLOWQUERIES}"
update_config_var $ZBX_CONFIG "SSLCertLocation" "$ZABBIX_USER_HOME_DIR/ssl/certs/"
update_config_var $ZBX_CONFIG "SSLKeyLocation" "$ZABBIX_USER_HOME_DIR/ssl/keys/"
update_config_var $ZBX_CONFIG "SSLCALocation" "$ZABBIX_USER_HOME_DIR/ssl/ssl_ca/"
update_config_var $ZBX_CONFIG "LoadModulePath" "$ZABBIX_USER_HOME_DIR/modules/"
update_config_multiple_var $ZBX_CONFIG "LoadModule" "${ZBX_LOADMODULE}"
update_config_var $ZBX_CONFIG "TLSConnect" "${ZBX_TLSCONNECT}"
update_config_var $ZBX_CONFIG "TLSAccept" "${ZBX_TLSACCEPT}"
update_config_var $ZBX_CONFIG "TLSCAFile" "${ZBX_TLSCAFILE}"
update_config_var $ZBX_CONFIG "TLSCRLFile" "${ZBX_TLSCRLFILE}"
update_config_var $ZBX_CONFIG "TLSServerCertIssuer" "${ZBX_TLSSERVERCERTISSUER}"
update_config_var $ZBX_CONFIG "TLSServerCertSubject" "${ZBX_TLSSERVERCERTSUBJECT}"
update_config_var $ZBX_CONFIG "TLSCertFile" "${ZBX_TLSCERTFILE}"
update_config_var $ZBX_CONFIG "TLSKeyFile" "${ZBX_TLSKEYFILE}"
update_config_var $ZBX_CONFIG "TLSPSKIdentity" "${ZBX_TLSPSKIDENTITY}"
update_config_var $ZBX_CONFIG "TLSPSKFile" "${ZBX_TLSPSKFILE}"
if [ "$(id -u)" != '0' ]; then
update_config_var $ZBX_CONFIG "User" "$(whoami)"
else
update_config_var $ZBX_CONFIG "AllowRoot" "1"
fi
}
prepare_proxy() {
echo "Preparing Zabbix proxy"
check_variables_mysql
check_db_connect_mysql
create_db_user_mysql
create_db_database_mysql
create_db_schema_mysql
update_zbx_config
}
#################################################
if [ "${1#-}" != "$1" ]; then
set -- /usr/sbin/zabbix_proxy "$@"
fi
if [ "$1" == '/usr/sbin/zabbix_proxy' ]; then
prepare_proxy
fi
exec "$@"
#################################################

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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
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Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
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either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
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is covered only if its contents constitute a work based on the
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Whether that is true depends on what the Program does.
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You may charge a fee for the physical act of transferring a copy, and
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infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.
If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
circumstances.
It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
implemented by public license practices. Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.
This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.
9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation. If the Program does not specify a version number of
this License, you may choose any version ever published by the Free Software
Foundation.
10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission. For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this. Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.